CN103765104A - Exhaust gas treatment device - Google Patents
Exhaust gas treatment device Download PDFInfo
- Publication number
- CN103765104A CN103765104A CN201280040961.4A CN201280040961A CN103765104A CN 103765104 A CN103765104 A CN 103765104A CN 201280040961 A CN201280040961 A CN 201280040961A CN 103765104 A CN103765104 A CN 103765104A
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- Prior art keywords
- waste gas
- trap portion
- trap
- flow direction
- ash content
- Prior art date
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- 238000011084 recovery Methods 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 37
- 239000002912 waste gas Substances 0.000 claims description 257
- 238000004880 explosion Methods 0.000 claims description 236
- 238000005452 bending Methods 0.000 claims description 69
- 239000000126 substance Substances 0.000 claims description 42
- 230000008859 change Effects 0.000 claims description 24
- 238000011144 upstream manufacturing Methods 0.000 claims description 19
- 230000033228 biological regulation Effects 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 230000009182 swimming Effects 0.000 claims description 12
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 5
- 241000482268 Zea mays subsp. mays Species 0.000 abstract description 5
- 239000003440 toxic substance Substances 0.000 abstract 3
- 231100000167 toxic agent Toxicity 0.000 abstract 2
- 239000000567 combustion gas Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 55
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 35
- 239000003546 flue gas Substances 0.000 description 35
- 239000003245 coal Substances 0.000 description 32
- 238000003723 Smelting Methods 0.000 description 26
- 238000002485 combustion reaction Methods 0.000 description 21
- 239000000446 fuel Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 239000008246 gaseous mixture Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000001154 acute effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/20—Intercepting solids by baffles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/30—Intercepting solids by screens
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Chimneys And Flues (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
An exhaust gas treatment device, wherein an exhaust gas pipe (48) through which combustion gas can flow, a heat recovery unit which is provided in the exhaust gas pipe (48) and can recover heat in exhaust gas, a toxic substance removal unit which is provided on the downstream side in the flow direction of the exhaust gas from the heat recovery unit in the exhaust gas pipe (48) and can remove toxic substances in the exhaust gas, and a popcorn ash trapping unit (60) which is provided between the heat recovery unit and the toxic substance removal unit in the exhaust gas pipe (48) and can trap popcorn ash in the exhaust gas are provided, and a first trapping part (61) having a high aperture ratio and a second trapping part (62) having a lower aperture ratio than the aperture ratio of the first trapping part (61) are provided as the popcorn ash trapping unit (60), thereby making it possible to appropriately trap the popcorn ash.
Description
Technical field
The present invention relates to a kind of be applied to generating with or workshop use etc. in for the emission-control equipment of the boiler of generating steam.
Background technology
For example, existing fine coal burning boiler has the smelting furnace that is hollow shape and arranges along vertical, at furnace wall, along circumferentially arranging and being multistage along above-below direction, disposes multiple combustion furnaces.This combustion furnace is supplied to fine coal (fuel) and the gaseous mixture of primary air after coal is pulverized and is supplied to the auxiliary air of high temperature, this gaseous mixture and auxiliary air are formed to flame thus to being blown in smelting furnace, thereby can in this smelting furnace, burn.And this smelting furnace is linked with flue on top, at this flue, be provided with the superheater, reheater, economizer of the heat for reclaiming waste gas etc., between the waste gas producing in the burning by smelting furnace and water, carry out heat exchange, thus can generating steam.In addition, this flue is linked with exhaust passageway, is provided with denitrification apparatus, electric precipitation machine, desulfurizer etc., and is provided with chimney at downstream end at this exhaust passageway.
In such fine coal burning boiler, in smelting furnace using the pulverized coal friring as fuel, therefore can sneak into explosion ash content (popcorn ash) in waste gas.This explosion ash content is grey piece, and therefore especially in the case of being attached to the denitrification apparatus of being located at exhaust passageway, the pressure loss rises and causes hydraulic performance decline.Therefore, all the time, at exhaust passageway, be provided with woven wire etc. and from waste gas, remove explosion ash content.As such technology, the content that for example existing following patent documentation 1,2 is recorded.
Formerly technical literature
Patent documentation
Patent documentation 1: No. 2724176 communique of Japan Patent
Patent documentation 2: No. 6994036 communique of United States Patent (USP)
Brief summary of the invention
The problem that invention will solve
As mentioned above, the waste gas producing in the smelting furnace of boiler has been sneaked into explosion ash content, and this explosion ash content is the grey piece of several millimeters～tens millimeters.On the other hand, the woven wire of being located at exhaust passageway is several millimeters of following meshes.Therefore, the collisions such as the explosion ash content of bulk and woven wire, thus exist the mesh of this woven wire to occur locally to stop up or generation abrasion or the damaged such problem of this woven wire generation.
Summary of the invention
The present invention completes in order to solve above-mentioned problem, and its object is, a kind of emission-control equipment that can suitably trap explosion ash content is provided.
Solution
In order to realize above-mentioned object, emission-control equipment of the present invention is characterised in that, described emission-control equipment possesses: exhaust passageway, and it can flow for burnt gas; Heat recovery portion, it is located at described exhaust passageway and can reclaims the heat in waste gas; Harmful substance is removed portion, and it is arranged on described in the ratio in described exhaust passageway heat recovery portion by the position in the downstream of the flow direction of waste gas, and can remove the harmful substance in waste gas; Explosion ash content trap portion, its described heat recovery portion and described harmful substance being arranged in described exhaust passageway is removed between portion, and can trap the explosion ash content in waste gas, described explosion ash content trap portion has: the first trap portion, and it has the aperture opening ratio of pre-set regulation; The second trap portion, it is arranged on the position by the downstream of the flow direction of waste gas than described the first trap portion, and has the aperture opening ratio lower than the aperture opening ratio of described the first trap portion.
Thereby, after in exhaust passageway, mobile waste gas reclaims heat by heat recovery portion, by the first high trap portion of aperture opening ratio, trap the explosion ash content that particle diameter is large, then by the second low trap portion of aperture opening ratio, trap the explosion ash content that particle diameter is little, by the harmful substance portion of removing, remove harmful substance afterwards.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion after being removed by the first trap portion, and therefore, the damage of the second trap portion causing because of the large explosion ash content of particle diameter is suppressed, thereby can suitably trap explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, described exhaust passageway has at mutual orthogonal coconnected the first path of direction and alternate path roughly, on described first path of upstream side of flow direction that is positioned at waste gas, be provided with described heat recovery portion, on the described alternate path in downstream of flow direction that is positioned at waste gas, be provided with described harmful substance and remove portion, described explosion ash content trap portion is arranged on described alternate path side.
Thereby, when the alternate path of waste gas from the first path to bending flows, can trap efficiently the explosion ash content comprising in this waste gas by explosion ash content trap portion.
In emission-control equipment of the present invention, it is characterized in that, below the interconnecting part between described the first path and described alternate path, be provided with the funnel that can stockpile explosion ash content, described the first trap portion is located at described funnel or described alternate path, and described the second trap portion is located at described alternate path.
Thereby, when the alternate path of waste gas from the first path to bending flows, after the explosion ash content comprising in trapping successively this waste gas by the first trap portion and the second trap portion, whole explosion ash contents is stockpiled in funnel, thereby can trap efficiently explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, the inner side at the turning in the interconnecting part between described the first path and described alternate path is provided with the guide portion to the guided outside at described turning by waste gas.
Thereby, when waste gas flows from the first path to alternate path, this waste gas directed section guides laterally from the inner side at turning, and the flow velocity of waste gas is reduced, can reduce thus the impact causing because of the collision to explosion ash content trap portion of explosion ash content, thereby suppress the damage of explosion ash content trap portion.
In emission-control equipment of the present invention, it is characterized in that, the inner side at the turning the interconnecting part of described the first trap portion between described the first path and described alternate path is configured in the position of the upstream side of the flow direction of waste gas downwards obliquely, and described the second trap portion is configured in the position in the downstream of the flow direction of waste gas downwards obliquely from the top of described alternate path.
Thereby, the first trap portion is configured in upstream side downwards obliquely, can suitably trap thus explosion ash content, and can make the explosion ash content trapping suitably fall, in addition, the second trap portion is configured in downstream downwards obliquely, can make thus the explosion ash content trapping suitably fall and regenerate, thereby can utilize explosion ash content trap portion to trap chronically explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, the bottom of described the first trap portion and described funnel separate the configuration with gap of regulation.
Thereby, the explosion ash content comprising in waste gas, after by the first trap portion trapping, is peeled off by this inclination, from the gap of bottom, to funnel, falls and stockpiles this funnel, thereby can suitably trap explosion ash content, and can make the explosion ash content trapping suitably fall and stockpile.
In emission-control equipment of the present invention, it is characterized in that, described the second trap portion can change downward tilt according to the flow velocity of waste gas.
Thereby, by by waste gas, the collision angle to the second trap portion during with flow at high speed changes to acute angle or obtuse angle, alleviate the impact causing because of the collision to the second trap portion of explosion ash content, thereby can suppress the damage of the second trap portion, and change as required the downward tilt of the second trap portion, can promote thus peeling off of the explosion ash content that traps.
In emission-control equipment of the present invention, it is characterized in that, described emission-control equipment is also provided with gas injection portion, and the downstream of the flow direction of the waste gas that this gas injection portion can be from described the second trap portion is towards described the second trap portion gas jet.
Thereby, make as required gas injection portion from downstream towards the second trap portion gas jet, can make thus the explosion ash content trapping peel off and regenerate, thereby can utilize the second trap portion to trap chronically explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, described the first trap portion has: multiple shields that can fall for the explosion ash content in waste gas collides; In the direction of intersecting with the flow direction of waste gas with the supporting member of the described multiple shields of predetermined distance supporting.
Thereby, utilize the first trap portion to make explosion ash content and multiple shield in waste gas collide and fall, reduce thus the amount of the explosion ash content mobile to the second trap portion, thereby can reduce the damage of the second trap portion causing because of explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, described the first trap portion has multiple shields, described multiple shield is along the vertical of intersecting with the flow direction of waste gas, and with predetermined distance configuration, can collide and it is fallen for the explosion ash content in waste gas in the horizontal direction of intersecting with the flow direction of waste gas.
Thereby, utilize the first trap portion to make explosion ash content and multiple shield in waste gas collide and fall, reduce thus the amount of the explosion ash content mobile to the second trap portion, thereby can reduce the damage of the second trap portion causing because of explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, described multiple shields of described the first trap portion are multistage configuration along the flow direction of waste gas.
Thereby, waste gas mobile become low pressure loss and inertia force also a little less than, therefore can utilize trap portion to trap reliably explosion ash content.
In emission-control equipment of the present invention, it is characterized in that, described shield is shape of a mesh or shape of slit.
Thereby, can be with simple structure decrease the amount to the mobile explosion ash content of the second trap portion.
In emission-control equipment of the present invention, it is characterized in that, described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first planar portions that the first and the flow direction of waste gas intersect, it two is parallel portion parallel with the flow direction of waste gas, and it three is intersect with the flow direction of waste gas and be positioned at the second planar portions of the position of swimming on the lower than the first planar portions.
Thereby, the trapping area change of the second trap portion, thus can trap efficiently the explosion ash content that particle diameter is little, and be formed with bight between parallel portion and the second planar portions, therefore can make the explosion ash content being trapped by this bight easily come off and regenerate.
In emission-control equipment of the present invention, it is characterized in that, described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the rightabout of the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
Thereby, the trapping area change of the second trap portion, thus can trap efficiently the explosion ash content that particle diameter is little, and be formed with bight between parallel portion and the second curved face part, therefore can make the explosion ash content being trapped by this bight easily come off and regenerate.
In emission-control equipment of the present invention, it is characterized in that, described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
Thereby, the trapping area change of the second trap portion, thus can trap efficiently the explosion ash content that particle diameter is little, and be formed with bight between parallel portion and the second curved face part, therefore can make the explosion ash content being trapped by this bight easily come off and regenerate.
In emission-control equipment of the present invention, it is characterized in that, described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first fold bent face portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bendings and be positioned at the second bending face of the position of swimming on the lower than first fold bent face portion on the flow direction of waste gas.
Thereby, the trapping area change of the second trap portion, thus can trap efficiently the explosion ash content that particle diameter is little, and be formed with bight between parallel portion and the second bending part, therefore can make the explosion ash content being trapped by this bight easily come off and regenerate.
Invention effect
According to emission-control equipment of the present invention, in can be for the mobile exhaust passageway of burnt gas, in heat recovery portion and harmful substance, remove the explosion ash content trap portion that is provided with the explosion ash content that can trap in waste gas between portion, as this explosion ash content trap portion, arrange and be provided with the first trap portion of high aperture and the second trap portion of low aperture opening ratio, therefore, the damage of the second trap portion causing because of the large explosion ash content of particle diameter is suppressed, thereby can suitably trap explosion ash content.
Accompanying drawing explanation
Fig. 1 is the brief configuration figure that has represented to apply the fine coal burning boiler of the related emission-control equipment of embodiments of the invention 1.
Fig. 2 is the concise and to the point side view that represents the emission-control equipment of embodiment 1.
Fig. 3 is the concise and to the point top view that represents the emission-control equipment of embodiment 1.
Fig. 4 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 2.
Fig. 5 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 3.
Fig. 6 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 4.
Fig. 7 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 5.
Fig. 8-1st, represents the concise and to the point figure of the variation of the second trap portion in the emission-control equipment of embodiment 5.
Fig. 8-2nd, represents the concise and to the point figure of the variation of the second trap portion in the emission-control equipment of embodiment 5.
Fig. 8-3rd, represents the concise and to the point figure of the variation of the second trap portion in the emission-control equipment of embodiment 5.
Fig. 9 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 6.
Figure 10 is the stereogram that represents the first trap portion in the emission-control equipment of embodiment 6.
Figure 11-1st, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 6.
Figure 11-2nd, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 6.
Figure 11-3rd, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 6.
Figure 11-4th, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 6.
Figure 12 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 7.
Figure 13 is the concise and to the point side view that represents the related emission-control equipment of embodiments of the invention 8.
Figure 14 is the concise and to the point top view that represents the emission-control equipment of embodiment 8.
Figure 15-1st, represents the stereogram of the first trap portion in the related emission-control equipment of embodiments of the invention 8.
Figure 15-2nd, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 8.
Figure 15-3rd, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 8.
The specific embodiment
Below, with reference to accompanying drawing, the most preferred embodiment of emission-control equipment of the present invention is described in detail.It should be noted that, be not to utilize this embodiment to limit the present invention, in addition, in the situation that having multiple embodiment, comprises the structure that combines each embodiment and form yet.
Embodiment 1
Fig. 1 is the brief configuration figure that has represented to apply the fine coal burning boiler of the related emission-control equipment of embodiments of the invention 1, Fig. 2 is the concise and to the point side view that represents the emission-control equipment of embodiment 1, and Fig. 3 is the concise and to the point top view that represents the emission-control equipment of embodiment 1.
The fine coal burning boiler of having applied the emission-control equipment of embodiment 1 is boiler as described below: can adopt using the fine coal after coal pulverizing as solid fuel, utilize combustion furnace to make this pulverized coal friring, and the heat being produced by this burning is reclaimed.
In the present embodiment 1, as shown in Figure 1, fine coal burning boiler 10 is conventional boiler, has smelting furnace 11 and burner 12.Smelting furnace 11 is the hollow shape of four directions cylinder and along vertical setting, in the bottom of the furnace wall that forms this smelting furnace 11, is provided with burner 12.
Burner 12 has the multiple combustion furnaces 21,22,23,24,25 that are assemblied in furnace wall.In the present embodiment, this combustion furnace 21,22,23,24,25, along circumferentially arranging four as one group in equal equally spaced modes, configures five groups, that is to say five sections of configurations along vertical.
And each combustion furnace 21,22,23,24,25 links with coal pulverizer (grinding mill) 31,32,33,34,35 via fine coal supply pipe 26,27,28,29,30.Although this coal pulverizer 31,32,33,34,35 is not shown, but be configured in housing to have along the mode of the axis of rotation of vertical, crushed work platform is supported as driving rotation, and multiple pulverization rollers are supported as rotating linkedly with the rotation of crushed work platform with the opposed mode in top of this crushed work platform.Thereby, when coal is when dropping between multiple pulverization rollers and crushed work platform, can be crushed at this size of regulation, and by carrying air (primary air), the fine coal after classification be supplied with to combustion furnace 21,22,23,24,25 from fine coal supply pipe 26,27,28,29,30.
In addition, smelting furnace 11 is provided with bellows 36 at the rigging position of each combustion furnace 21,22,23,24,25, is linked with an end of air duct 37 at these bellows 36, and this air duct 37 is equipped with drum blower fan 38 in the other end.Thereby, the combustion air of being sent here by drum blower fan 38 (auxiliary air, tertiary air) can be supplied with to bellows 36 from air duct 37, and be supplied with to each combustion furnace 21,22,23,24,25 from these bellows 36.
Therefore, in burner 12, the micro-powder fuel gaseous mixture (fuel gas) that each combustion furnace 21,22,23,24,25 can mix fine coal and primary air is blown in smelting furnace 11, and auxiliary air is blown in smelting furnace 11, by not shown igniting torch, micro-powder fuel gaseous mixture is lighted a fire, thereby can form flame.
It should be noted that, typically, when the starting of boiler, each combustion furnace 21,22,23,24,25 forms flame by oil fuel to the interior injection of smelting furnace 11.
Smelting furnace 11 is linked with flue 40 on top, as convection heat transfer' heat-transfer by convection portion (heat recovery portion), at this flue 40, be provided with: for reclaiming superheater (superheater) 41,42, reheater 43,44, the economizer (energy-saving appliance) 45,46,47 of heat of waste gas, thereby carry out heat exchange between the waste gas producing in the burning because of in smelting furnace 11 and water.
Flue 40 is linked with the flue gas leading (exhaust passageway) 48 that the waste gas to having carried out heat exchange is discharged in its downstream.This flue gas leading 48 is provided with air heater 49 between itself and air duct 37, at air mobile in air duct 37 with in flue gas leading 48, between mobile waste gas, carry out heat exchange, thereby can make the combustion air of supplying with to combustion furnace 21,22,23,24,25 heat up.
In addition, in flue gas leading 48, than air heater 49, by the position of upstream side, be provided with selective reduction type catalyst 50, be provided with electric precipitation machine 51, induction drum blower fan 52, desulfurizer 53 than the position of air heater 49 downstreams, at downstream end, be provided with chimney 54.At this, selective reduction type catalyst 50, electric precipitation machine 51, desulfurizer 53 are removed portion and are brought into play function as harmful substance.
Thereby when driving coal pulverizer 31,32,33,34,35, the fine coal of generation is supplied with by fine coal supply pipe 26,27,28,29,30 and to combustion furnace 21,22,23,24,25 with air in the lump with carrying.In addition, the combustion air after heating is supplied with to each combustion furnace 21,22,23,24,25 via bellows 36 from air duct 37.So combustion furnace 21,22,23,24,25 is blown into fine coal and carrying and combustion air is blown into smelting furnace 11 to smelting furnace 11 with the mixed micro-powder fuel gaseous mixture of air, now can form flame by lighting.In this smelting furnace 11, micro-powder fuel gaseous mixture and combustion air burn and produce flame, and when the bottom in this smelting furnace 11 produces flame, burnt gas (waste gas) is discharged to flue 40 in the interior rising of this smelting furnace 11.
It should be noted that, in smelting furnace 11, by so that the quantity delivered of air becomes with respect to the quantity delivered of fine coal the mode that is less than theoretical air requirement sets, thereby make inside remain reducing environment.And, because of the NO of powder burning of coal generation
xin smelting furnace 11, be reduced, by additional services additive air, complete afterwards the oxidizing fire of fine coal, thereby reduce the NO being produced by powder burning of coal
xgeneration.
Now, never the water that illustrated supply-water pump is supplied with is after by economizer 45,46,47 preheatings, at steamdrum to not shown, supply with and heated and become saturated vapor during supplying with to each water pipe (not shown) of furnace wall, and send into not shown steamdrum.And then the saturated vapor of not shown steamdrum imports to superheater 41,42, and overheated by burnt gas.The superheated steam being generated by superheater 41,42 for example, is supplied with to not shown generating equipment (, turbine etc.).In addition, the steam midway taking out of the expansion process in turbine imports to reheater 43,44, again by overheated and return to turbine.It should be noted that, using smelting furnace 11, as drum type (steamdrum), be illustrated, but be not to be confined to this structure.
Then, by the selected reduction catalyst 50 in flue gas leading 48 of the waste gas after the economizer 45,46,47 of flue 40, remove NO
xetc. harmful substance, by electric precipitation machine 51, removed particle-like substance, utilize desulfurizer 53 to remove sulphur, discharge afterwards from chimney 54 to atmosphere.
In the fine coal burning boiler 10 so forming, than the part of smelting furnace 11 downstreams, as the emission-control equipment of embodiment 1, bring into play function.And, in the emission-control equipment of this embodiment 1, heat recovery portion in flue gas leading 48 (superheater 41,42, reheater 43,44, economizer 45,46,47) and harmful substance are removed between portion's (selective reduction type catalyst 50, electric precipitation machine 51, desulfurizer 53) and are provided with the explosion ash content trap portion 60 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 60 comprises: first trap portion 61 with the aperture opening ratio of pre-set regulation; Be arranged on than this first trap portion 61 by the position in the downstream of the flow direction of waste gas and there is the second trap portion 62 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61.
; as shown in Figures 2 and 3; flue gas leading 48 for example has rectangular section; and comprise the first pipe arrangement (the first path) 48a extending along vertical and the second pipe arrangement (alternate path) 48b extending along horizontal direction, the first pipe arrangement 48a and the second pipe arrangement 48b are roughly being communicated with in orthogonal direction mutually.In this case, the first pipe arrangement 48a side of upstream side at the flow direction that is positioned at waste gas is provided with heat recovery portion, in the second pipe arrangement 48b side in downstream of flow direction that is positioned at waste gas, be provided with harmful substance and remove portion, compared with the area of passage of the first pipe arrangement 48a, the area of passage of the second pipe arrangement 48b is set littlely.And explosion ash content trap portion 60 is arranged on the second pipe arrangement 48b side.
In addition, the leading section of the rearward end of the first pipe arrangement 48a and the second pipe arrangement 48b is communicated with, and below this interconnecting part, is provided with the funnel 63 that can stockpile explosion ash content.This funnel 63 is by with downward and the opposed inclined plane of the mode that area narrows forms, and lower end part is in the position lower than the bottom surface of the second pipe arrangement 48b.It should be noted that, this funnel 63 not only stockpiles the explosion ash content that is trapped and fallen by explosion ash content trap portion 60, also by not shown open and close valve, makes peristome open, can make thus explosion ash content discharge downwards.And the first trap portion 61 is arranged on the top of funnel 63, the second trap portion 62 is arranged in the second pipe arrangement 48b.
On the other hand, with the first trap portion 61 in the same manner, the upper end of the second trap portion 62 (base end part) is fixed on bracket 64, this bracket 64 is fixed on the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b.And the bottom (leading section) of this second trap portion 62 is configured in the downstream of the flow direction of waste gas downwards obliquely in the mode of extending from this position.That is, the second trap portion 62 makes the downstream inclination predetermined angular θ 2 of bottom to the flow direction of waste gas with respect to plumb line.
In this case, the first trap portion 61 and the second trap portion 62 that form explosion ash content trap portion 60 are set as, and the aperture opening ratio of the first trap portion 61 is large and the aperture opening ratio of the second trap portion 62 is little.For example, this first trap portion 61 and the second trap portion 62 form by being cancellous woven wire, and the first trap portion 61 consists of multiple openings more than 10mm, and the second trap portion 62 consists of the multiple openings below 2mm～3mm.It should be noted that, the first trap portion 61 and the second trap portion 62 are not limited to and are cancellous woven wire, also can be made as mesh screen, porous body of having vertical slit or horizontal slit etc.
In addition, the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b is provided with waste gas and helps stream portion (guide portion) 65 to the guided outside at turning.It is side-prominent to the opposed internal face in outside that is positioned at turning that this helps the place, inner side at the turning in the interconnecting part of stream portion 65 between the first pipe arrangement 48a and the second pipe arrangement 48b to be arranged to from the internal face of the bottom of the first pipe arrangement 48a, and section is tapering triangle.
At this, the effect of the emission-control equipment to embodiment 1 describes.After in flue gas leading 48, mobile waste gas reclaims heat by heat recovery portion (superheater 41,42, reheater 43,44, economizer 45,46,47, above with reference to figure 1), along the first pipe arrangement 48a, flow downwards.And waste gas is approximate right angle bending and flows to explosion ash content trap portion 60 in interconnecting part.
At this,, by helping stream portion 65 to guide to the central side of interconnecting part, peel off thus and flow and its flow velocity reduction at the place, inner side at the turning in the interconnecting part of waste gas between the first pipe arrangement 48a and the second pipe arrangement 48b.And first waste gas trap by the first high trap portion 61 of aperture opening ratio the explosion ash content that particle diameter is large, then by the second low trap portion 62 of aperture opening ratio, trap the explosion ash content that particle diameter is little.In addition, the waste gas of the flows outside at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b is by the gap on the leading section of the first trap portion 61 and the inclined plane of funnel 63, but the explosion ash content that particle diameter is large and the inclined plane butt of this funnel 63 and fall, second trap portion 62 low by aperture opening ratio traps the explosion ash content that particle diameter is little.It should be noted that, although the explosion ash content being trapped by each trap portion 61,62 adheres to ormal weight, because this each trap portion 61,62 tilts, therefore freely fall, stockpile in funnel 63.
Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 62 after being removed by the first trap portion 61, therefore flow to the explosion ash content that the particle diameter of the second trap portion 62 is large, almost do not have, thereby suppressed the damage of the second trap portion 62 being caused by the large explosion ash content of this particle diameter.Then, the waste gas of explosion ash content after being removed by explosion ash content trap portion 60 is removed portion's (selective reduction type catalyst 50, electric precipitation machine 51, desulfurizer 53, above with reference to figure 1) by harmful substance and is removed harmful substance.
So, in the emission-control equipment of embodiment 1, be provided with: can supply the mobile flue gas leading 48 of burnt gas; The heat recovery portion that is located at flue gas leading 48 and can reclaims the heat in waste gas; Be arranged on and than heat recoverer, by the position in the downstream of the flow direction of waste gas and the harmful substance that can remove the harmful substance in waste gas, remove portion in flue gas leading 48; Be arranged on the explosion ash content trap portion 60 that heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and can be trapped the explosion ash content in waste gas, as this explosion ash content trap portion 60, be provided with the first trap portion 61 that aperture opening ratio is high and there is the second trap portion 62 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61.
Thereby, after in flue gas leading 48, mobile waste gas reclaims heat by heat recovery portion, first trap portion 61 high by aperture opening ratio traps the explosion ash content that particle diameter is large, then by the second low trap portion 62 of aperture opening ratio, trap the explosion ash content that particle diameter is little, by the harmful substance portion of removing, harmful substance is removed afterwards.Therefore, what the waste gas that contains the explosion ash content that particle diameter is large flowed to the second trap portion 62 does not almost have, and obstruction, abrasion, the damage of the second trap portion 62 being caused by the large explosion ash content of particle diameter are inhibited, thereby can always suitably trap explosion ash content.
In addition, in the emission-control equipment of embodiment 1, as flue gas leading 48, be provided with at mutual orthogonal coconnected the first pipe arrangement 48a of direction and the second pipe arrangement 48b roughly, the first pipe arrangement 48a of upstream side at the flow direction that is positioned at waste gas is provided with heat recovery portion, at the second pipe arrangement 48b in downstream of flow direction that is positioned at waste gas, be provided with harmful substance and remove portion, and explosion ash content trap portion 60 is arranged on to the second pipe arrangement 48b side.Thereby, when the second pipe arrangement 48b of waste gas from the first pipe arrangement 48a to bending flows, can utilize explosion ash content trap portion 60 to trap efficiently the explosion ash content comprising in this waste gas.
In addition, in the emission-control equipment of embodiment 1, below the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, be provided with the funnel 63 that can stockpile explosion ash content, the first trap portion 61 be arranged on to the top of funnel 63, the second trap portion 62 is arranged on to the second pipe arrangement 48b.Thereby, when the second pipe arrangement 48b of waste gas from the first pipe arrangement 48a to bending flows, after the explosion ash content that utilizes the first trap portion 61 and the second trap portion 62 to comprise in trapping successively this waste gas, whole explosion ash contents stockpile in funnel 63, thereby can trap efficiently explosion ash content.
In addition, in the emission-control equipment of embodiment 1, the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b is provided with waste gas and helps stream portion 65 to the guided outside at turning.Thereby, when waste gas flows from the first pipe arrangement 48a to the second pipe arrangement 48b, this waste gas guides from the inner side at turning laterally by helping stream portion 65, peel off thus flowing of waste gas and flow velocity is reduced, therefore can alleviate the impact causing to the collision of the explosion ash content of explosion ash content trap portion 60, thereby suppress the damage of explosion ash content trap portion 60.
In addition, in the emission-control equipment of embodiment 1, make the inner side at the turning the interconnecting part of the first trap portion 61 between the first pipe arrangement 48a and the second pipe arrangement 48b be configured in obliquely the position of the upstream side of the flow direction of waste gas downwards, make the second trap portion 62 from the top of the second pipe arrangement 48b, be configured in obliquely the position in the downstream of the flow direction of waste gas downwards.Thereby, by making the first trap portion 61 be configured in obliquely upstream side downwards, can suitably trap explosion ash content, and can make the explosion ash content trapping suitably fall.In addition, by making the second trap portion 62 be configured in obliquely downstream downwards, can make the explosion ash content trapping suitably fall and regenerate, thereby can utilize explosion ash content trap portion 60 to trap chronically explosion ash content.
In addition, in the emission-control equipment of embodiment 1, between the bottom of the first trap portion 61 and funnel 63, separate the gap of regulation.Thereby, after the explosion ash content comprising in waste gas is trapped by the first trap portion 61, by its inclination, peel off, from the gap of bottom, to funnel 63, fall and stockpile this funnel 63, thereby can suitably trap explosion ash content, and can make the explosion ash content trapping suitably fall and stockpile.
Embodiment 2
Fig. 4 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 2.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 2, as shown in Figure 4, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 60 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 60 comprises: first trap portion 61 with high aperture; There is the second trap portion 62 of low aperture opening ratio.
Flue gas leading 48 is mutually roughly being communicated with in orthogonal direction and is forming by the first pipe arrangement 48a extending along vertical and the second pipe arrangement 48b extending along horizontal direction, the first pipe arrangement 48a side of upstream side at the flow direction that is positioned at waste gas is provided with heat recovery portion, in the second pipe arrangement 48b side in downstream of flow direction that is positioned at waste gas, be provided with harmful substance and remove portion, explosion ash content trap portion 60 is arranged on the second pipe arrangement 48b side.
In addition, below the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, be provided with funnel 63.Bracket 64 is fixed in the upper end of the first trap portion 61, this bracket 64 is fixed on the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, and bottom is configured in the position of the upstream side of the flow direction of waste gas downwards obliquely in the mode of extending.On the other hand, the upper end of the second trap portion 62 is supported on bracket 64, this bracket 64 is fixed on the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, and bottom is configured in the position in the downstream of the flow direction of waste gas downwards obliquely in the mode of extending.In addition, the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b is provided with and makes waste gas help stream portion 65 to the guided outside at turning.
In addition, the second trap portion 62 can change upper and lower angle of inclination according to the flow velocity of waste gas mobile in flue gas leading 48.That is, the upper end of the second trap portion 62 is by along rotating and be supported on freely bracket 64 with the bolster 71 of the orthogonal horizontal direction of the flow direction of waste gas.In addition, the second pipe arrangement 48b disposes drive unit (for example, cylinder, hydraulic cylinder, motor etc.) 72 in inner surface bottom along the flow direction of waste gas, and is fixed on the second pipe arrangement 48b by installation bracket 73.This drive unit 72 is along disposing multiplely with the orthogonal horizontal direction of the flow direction of waste gas, and the bottom of the leading section of each drive rod 74 and the second trap portion 62 links.
And each drive unit 72 is connected with control device 75.In addition, flue gas leading 48 (the second pipe arrangement 48b) is provided with the velocity sensor 76 of the flow velocity that can detect waste gas in inside, and testing result is exported to control device 75.Therefore, control device 75 can the testing result based on velocity sensor 76 drive control to drive unit 72.Particularly, control device 75 is controlled in the following manner,, when the flow velocity of waste gas mobile in flue gas leading 48 (the second pipe arrangement 48b) uprises, the drive rod 74 of drive unit 72 is shunk, and the second trap portion 62 is rotated around counterclockwise in Fig. 4 take bolster 71 as fulcrum, the second trap portion 62 becomes large with respect to the angle of inclination of vertical thus.
Thereby, when waste gas arrives explosion ash content trap portion 60, first by the first high trap portion 61 of aperture opening ratio, trap the explosion ash content that particle diameter is large, then by the second low trap portion 62 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 62 after being removed by the first trap portion 61, therefore, to the large explosion ash content of the mobile particle diameter of the second trap portion 62, almost do not have, thereby the damage of the second trap portion 62 causing because of the large explosion ash content of this particle diameter is suppressed.
In addition, when the load of fine coal burning boiler 10 becomes large, the discharge quantitative change of the burnt gas of discharging to flue 40 is many, and its flow velocity accelerates.The second trap portion 62 is (during specified loads) inclination predetermined angular when the common running of fine coal burning boiler 10.And, when the exhaust gas velocity of the flue gas leading 48 (the second pipe arrangement 48b) that control device 75 detects at velocity sensor 76 accelerates, drive unit 72 is moved, thereby makes the angle of inclination of the second trap portion 62 become large.In this case, control device 75 is expected, makes the angle of inclination mappingization of the second trap portion 62 with respect to exhaust gas velocity, according to this mapping, carrys out accessory drive 72.
Therefore, when exhaust gas velocity accelerates, it is large that the angle of inclination of the second trap portion 62 becomes, therefore the second trap portion 62 is not orthogonal with the flow direction of waste gas, becomes acute angle or obtuse angle, and the impact that the explosion ash content in waste gas and the second trap portion 62 collide is relaxed.It should be noted that, change as required the angle of inclination of the second trap portion 62, the explosion ash content being trapped by this second trap portion 62 thus falls and stockpiles in this funnel 63 to funnel 63.
So, in the emission-control equipment of embodiment 2, as explosion ash content trap portion 60, be provided with the first trap portion 61 that aperture opening ratio is high and there is the second trap portion 62 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61, and utilizing drive unit 72 to make the second trap portion 62 change downward tilt according to the flow velocity of waste gas.
Thereby, when waste gas is with at a high speed interior when mobile at flue gas leading 48, by making the angle of inclination of the second trap portion 62 become large, the angle that enters to this second trap portion 62 of waste gas becomes acute angle or obtuse angle, can reduce the impact causing because of the collision to the second trap portion 62 of explosion ash content, thereby suppress the damage of the second trap portion 62.In addition, change as required the angle of inclination of the second trap portion 62, can promote thus peeling off of the explosion ash content that trapped by this second trap portion 62.
Embodiment 3
Fig. 5 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 3.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 3, as shown in Figure 5, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 60 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 60 comprises: first trap portion 61 with high aperture; There is the second trap portion 62 of low aperture opening ratio.Bracket 64 is fixed in the upper end of the first trap portion 61, this bracket 64 is fixed on the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, and bottom is configured in the position of the upstream side of the flow direction of waste gas downwards obliquely in the mode of extending.
On the other hand, the upper end of the second trap portion 62 is rotated and is supported on freely bracket 64 to have the mode of bolster 71, this bracket 64 is fixed on the inner side at the turning in the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, and bottom is configured in the position in the downstream of the flow direction of waste gas downwards obliquely in the mode of extending.And this second trap portion 62 can change upper and lower angle of inclination according to the flow velocity of waste gas mobile in flue gas leading 48.That is, the second trap portion 62 for example, in bottom and be fixed between the bracket 77 of inner surface bottom of the second pipe arrangement 48b and clamp flexible member (, Compress Spring, rubber etc.) 78.
Thereby when the load of fine coal burning boiler 10 becomes large, the discharge quantitative change of the burnt gas of discharging to flue 40 is many, and its flow velocity accelerates.So the second trap portion 62 is subject to the power increase that waste gas is pressed, bottom is compressed elastic component 78 and this elastic component 78 is retreated.That is to say, the second trap portion 62 rotates around counter clockwise direction in Fig. 5 take bolster 71 as fulcrum, and the second trap portion 62 becomes large with respect to the angle of inclination of vertical thus.
Therefore, when exhaust gas velocity accelerates, it is large that the angle of inclination of the second trap portion 62 becomes, therefore the second trap portion 62 is not orthogonal with the flow direction of waste gas, becomes acute angle or obtuse angle, and the impact that the explosion ash content in waste gas and the second trap portion 62 collide is relaxed.It should be noted that, now, by changing the angle of inclination of the second trap portion 62, thereby the explosion ash content being trapped by this second trap portion 62 falls and stockpiles in this funnel 63 to funnel 63.
So, in the emission-control equipment of embodiment 3, as explosion ash content trap portion 60, be provided with the first trap portion 61 that aperture opening ratio is high and there is the second trap portion 62 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61, and can make the second trap portion 62 change downward tilt according to the flow velocity of waste gas.
Thereby, when waste gas is with at a high speed interior when mobile at flue gas leading 48, by making the angle of inclination of the second trap portion 62 become large, the angle that enters to this second trap portion 62 of waste gas becomes acute angle or obtuse angle, can alleviate the impact causing because of the collision to the second trap portion 62 of explosion ash content, thereby suppress the damage of the second trap portion 62.Now, by the angle of inclination that makes the second trap portion 62, change, can promote thus peeling off of the explosion ash content that trapped by this second trap portion 62.
It should be noted that, in the above embodiments 2,3, the upper end supporting of the second trap portion 62 can be changed to angle of inclination for rotating mobile bottom freely, but also the bottom supporting of the second trap portion 62 can be able to be changed to angle of inclination for rotating mobile upper end freely.In addition, be not only the second trap portion 62, also can change according to the flow velocity of waste gas the angle of inclination of the first trap portion 61.
Embodiment 4
Fig. 6 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 4.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 4, as shown in Figure 6, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 60 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 60 comprises: first trap portion 61 with high aperture; There is the second trap portion 62 of low aperture opening ratio.
In addition, the downstream of flow direction that is provided with waste gas that can be from the second trap portion 62 is to the gas injection portion of these the second trap portion 62 gas jet.That is, the position configuration in the downstream of the flow direction of the waste gas of the second pipe arrangement 48b in the second trap portion 62 has air pipe arrangement 81, and this air pipe arrangement 81 for example, is provided with injection nozzle 82 with predetermined distance (, uniformly-spaced) on its long side direction.In this case, air pipe arrangement 81 is along vertical configuration and multiple with predetermined distance configuration in the horizontal direction.In addition, air pipe arrangement 81 is linked with air supply pipe arrangement 83, and this air supply pipe arrangement 83 halfway portion is provided with open and close valve 84 and extends to air supply source 85.It should be noted that, in this case, the air that so-called " air " is periphery can or be expected for inertness gas.
Thereby, when waste gas arrives explosion ash content trap portion 60, first by the first high trap portion 61 of aperture opening ratio, trap the explosion ash content that particle diameter is large, then by the second low trap portion 62 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 62 after being removed by the first trap portion 61, therefore, to the large explosion ash content of the mobile particle diameter of the second trap portion 62, almost do not have, thereby the damage of the second trap portion 62 causing because of the large explosion ash content of this particle diameter is suppressed.
And, when when passing through specified time limit, the second trap portion 62 is stopped up by explosion ash content, make open and close valve 84 open, the air in air supply source 85 is supplied with to air pipe arrangement 81 from air supply pipe arrangement 83, thereby to the second trap portion 62, sprayed air from each injection nozzle 82.So the explosion ash content that is attached to the second trap portion 62 comes off, to funnel 63, fall and stockpile in this funnel 63.Therefore, the second trap portion 62 is removed explosion ash content and regenerate, and the trapping ability of explosion ash content is recovered.
So, in the emission-control equipment of embodiment 4, as explosion ash content trap portion 60, be provided with the first trap portion 61 that aperture opening ratio is high and there is the second trap portion 62 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61, and the injection nozzle 82 of air (gas) is sprayed in the downstream that is provided with the flow direction of waste gas that can be from the second trap portion 62 to this second trap portion 62.
Thereby, from injection nozzle 82, to the second trap portion 62, spray air as required, the explosion ash content trapping can be peeled off and regenerated thus, thereby can trap chronically explosion ash content by the second trap portion 62.
Embodiment 5
Fig. 7 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 5, and Fig. 8-1 is to Fig. 8-3rd, represents the concise and to the point figure of the variation of the second trap portion in the emission-control equipment of embodiment 5.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 5, as shown in Figure 7, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 90 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 90 comprises: first trap portion 61 with high aperture; There is the second trap portion 91 of low aperture opening ratio.The first trap portion 61 is configured in the top of funnel 63 obliquely.On the other hand, the second trap portion 91 is configured in the inlet portion of the second pipe arrangement 48b obliquely.
In this case, the second trap portion 91 is arranged alternately and forms on left and right directions by following three members, the first orthogonal planar portions 91a of flow direction of the first and waste gas, it two is parallel portion 91bs parallel with the flow direction of waste gas, and it three is orthogonal with the flow direction of waste gas and is positioned at the second planar portions 91c in the downstream of the first planar portions 91a.That is, the second trap portion 91 is formed with recess (the second planar portions 91c) with predetermined distance on left and right directions, makes thus to trap area change.
Thereby, when waste gas arrives explosion ash content trap portion 90, first by the first high trap portion 61 of aperture opening ratio, trap the explosion ash content that particle diameter is large, then by the second low trap portion 91 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Now, the second trap portion 91 is formed and is trapped area change by the first planar portions 91a, parallel portion 91b and the second planar portions 91c, therefore can trap efficiently the explosion ash content that particle diameter is little.In addition, owing to being formed with bight between parallel portion 91b and the second planar portions 91c, therefore easily make the explosion ash content being trapped by this bight come off.
It should be noted that, the shape of the second trap portion 91 is not limited to this shape.For example, as shown in Fig. 8-1, the second trap portion 92 is arranged alternately and forms on left and right directions by following three members, the 92a of first surface portion of first bending on the flow direction of waste gas, it two is parallel portion 92bs parallel with the flow direction of waste gas, and it three is bending on the rightabout of the flow direction of waste gas and is positioned at the second curved face part 92c in the downstream of the 92a of first surface portion.That is, the second trap portion 92 is formed with recess (the second curved face part 92c) with predetermined distance on left and right directions, makes thus to trap area change.
In addition, as shown in Fig. 8-2, the second trap portion 93 is arranged alternately and forms on left and right directions by following three members, the 93a of first surface portion of first bending on the flow direction of waste gas, it two is parallel portion 93bs parallel with the flow direction of waste gas, and it three is bending on the flow direction of waste gas and is positioned at the second curved face part 93c in the downstream of the 93a of first surface portion.That is, the second trap portion 93 is formed with recess (the second curved face part 93c) with predetermined distance on left and right directions, makes thus to trap area change.
In addition, as shown in Fig. 8-3, the second trap portion 94 is arranged alternately and forms on left and right directions by following three members, the first fold bent face 94a of portion of first bending on the flow direction of waste gas, it two is parallel portion 94bs parallel with the flow direction of waste gas, and it three is bendings and be positioned at the second bending face 94c in the downstream of the first fold bent face 94a of portion on the flow direction of waste gas.That is, the second trap portion 94 is formed with recess (the second bending face 94c) with predetermined distance on left and right directions, makes thus to trap area change.
It should be noted that, the opposed pair of parallel 91b of portion, 92b, 93b, 94b are formed as rake in the mode narrowing along the flow direction of waste gas, become thus easy trapping explosion ash content.
So, in the emission-control equipment of embodiment 5, as explosion ash content trap portion 90, be provided with the first trap portion 61 that aperture opening ratio is high and there is the second trap portion 91,92,93,94,95 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 61, and the second trap portion 91,92,93,94,95 is made as to the shape on left and right directions with multiple jogs.Thereby, make the trapping area change of the second trap portion 91,92,93,94,95, can make thus the arresting efficiency of explosion ash content improve.
Embodiment 6
Fig. 9 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 6, Figure 10 is the stereogram that represents the first trap portion in the emission-control equipment of embodiment 6, and Figure 11-1 is to Figure 11-4th, represents the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 6.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 6, as shown in FIG. 9 and 10, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 100 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 100 comprises: first trap portion 101 with high aperture; There is the second trap portion 102 of low aperture opening ratio.And, below the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, be provided with inlet portion in funnel 103, the first trap portions 101 and the second trap portion 102 and the second pipe arrangement 48b, that is to say that funnel 103 closely configures.
The first trap portion 101 comprises: multiple shields 104 that can fall for the explosion ash content in waste gas collides; In the direction of intersecting with the flow direction of waste gas, with predetermined distance, support the supporting member 105 of the plurality of shield 104.That is, supporting member 105 is along the bar shape of vertical and multiple with predetermined distance configuration on left and right directions, and upper end and bottom are fixed on the internal face of the inlet portion of the second pipe arrangement 48b.Shield 104 is the big or small sheet material shape of regulation and becomes grow rectangular-shaped on left and right directions.And multiple shields 104 are fixed on predetermined distance on the long side direction of each supporting member 105, consequently, each shield 104 on the path profile direction of the second pipe arrangement 48b with have specified gap mode flatness configure.In this case, shield 104 each other between the upper and lower every and between left and right every suitable setting, also can with waste gas in the particle diameter of explosion ash content correspondingly set narrowlyer.
Thereby, when waste gas arrives explosion ash content trap portion 100, first by the first high trap portion 101 of aperture opening ratio, for the large explosion ash content of particle diameter, collide and make it fall trapping, then by the second low trap portion 102 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 102 after being removed by the first trap portion 101, therefore, to the large explosion ash content of the mobile particle diameter of the second trap portion 102, almost do not have, thereby the damage of the second trap portion 102 causing because of the large explosion ash content of this particle diameter is suppressed.
It should be noted that, the shape of the first trap portion 101 is not limited to this shape.For example, as shown in Figure 11-1, the first trap portion 111 forms by multiple shields 112 with the supporting member 113 that predetermined distance supports the plurality of shield 112.That is, supporting member 113 is the bar shape along vertical.Shield 112 is the shape that makes the central portion of big or small sheet material on its left and right directions of regulation sentence predetermined angular bending.And multiple shields 112 are fixed with predetermined distance on the long side direction of supporting member 113.In this case, each shield 112 is towards the rightabout bending of the flow direction of waste gas, and the supporting member 113 that is fixed with the central portion of this shield 112 also becomes bending (V word) section shape, but is only the bar of rectangular section shape.
In addition, as shown in Figure 11-2, the first trap portion 121 forms by multiple shields 122 with the supporting member 123 that predetermined distance supports the plurality of shield 122.That is, supporting member 123 is the bar shape along vertical.Shield 122 is the shape of the big or small sheet material bending that makes regulation.And multiple shields 122 are fixed with predetermined distance on the long side direction of supporting member 123.In this case, each shield 122 is towards the rightabout bending of the flow direction of waste gas, and the supporting member 123 that is fixed with the central portion of this shield 122 also becomes bending (U word) section shape, but is only the bar of rectangular section shape.
In addition, as shown in Figure 11-3, the first trap portion 131 forms by multiple shields 132 with the supporting member 133 that predetermined distance supports the plurality of shield 132.That is, supporting member 133 is the bar shape along vertical.Shield 132 is the shape that makes the central portion of big or small sheet material on its left and right directions of regulation sentence predetermined angular bending.And multiple shields 132 are fixed with predetermined distance on the long side direction of supporting member 133.In this case, each shield 132 is towards the flow direction bending of waste gas.
It should be noted that, the shape of each shield 104,112,122,132 is not limited to these proterties.But, in the case of as shield 112,122 towards the rightabout bending of the flow direction of waste gas or bending, can trap efficiently the explosion ash content comprising in waste gas.On the other hand, in the case of as shield 132 towards the flow direction bending of waste gas or bending, can trap efficiently the explosion ash content comprising in waste gas, and can make the flow resistance of waste gas reduce to reduce the pressure loss.
In addition, the configuration of the each shield 104,112,122,132 in the first trap portion 101,111,121,131 is not limited to this embodiment.For example, as shown in Figure 11-4, the first trap portion 136 has anterior trap portion 136a and the rear portion trap portion 136b that the front and back on the flow direction of waste gas configure with predetermined distance.This front portion trap portion 136a and rear portion trap portion 136b are roughly the same structure, and form by multiple shields 137 with the supporting member 138 that predetermined distance supports the plurality of shield 137.But in anterior trap portion 136a and rear portion trap portion 136b, depart from the horizontal direction and in vertical the position of each shield 137.It should be noted that two sections of configurations before and after the first trap portion 136 has been made as are configured to or irregularly configuration but also can be made as three sections.In addition, such configuration is not only the first trap portion 136, can be also the first trap portion 101,111,121,131.
So, in the emission-control equipment of embodiment 6, as explosion ash content trap portion 100, be provided with the first trap portion 101 that aperture opening ratio is high, 111, 121, 131 and have than the first trap portion 101, 111, 121, the second trap portion 102 of the aperture opening ratio that 131 aperture opening ratio is low, as the first trap portion 101, 111, 121, 131 are provided with multiple shields 104 that can fall for the explosion ash content in waste gas collides, 112, 122, 132 and with predetermined distance, support the plurality of shield 104 in the direction of intersecting with the flow direction of waste gas, 112, 122, 132 supporting member 105, 113, 123, 133.
Thereby, because the explosion ash content in waste gas and multiple shield 104,112,122,132 collides and fall to funnel 103, utilize thus the first trap portion 101,111,121,131 to trap, the amount of the explosion ash content mobile to the second trap portion 102 is reduced, thus the damage that can alleviate the second trap portion 102 causing because of explosion ash content.
Embodiment 7
Figure 12 is the concise and to the point figure that represents the related emission-control equipment of embodiments of the invention 7.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 7, as shown in figure 12, flue gas leading 48 is mutually roughly being communicated with in orthogonal direction and is forming by the first pipe arrangement (the first path) 48a extending along vertical, the second pipe arrangement (the first path) 48b extending along horizontal direction and the 3rd pipe arrangement (alternate path) 48c that extends along vertical, the first pipe arrangement 48a side of upstream side at the flow direction that is positioned at waste gas is provided with heat recovery portion, is provided with harmful substance removes portion in the 3rd pipe arrangement 48c side in downstream of flow direction that is positioned at waste gas.In addition, below the interconnecting part between the first pipe arrangement 48a and the second pipe arrangement 48b, be provided with the first funnel 141, below the interconnecting part of the second pipe arrangement 48b and the 3rd pipe arrangement 48c, be provided with the second funnel 142.
And the heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and be provided with the explosion ash content trap portion 143 that can trap the explosion ash content in waste gas, explosion ash content trap portion 143 comprises: first trap portion 144 with high aperture; There is the second trap portion 145 of low aperture opening ratio.In the present embodiment, explosion ash content trap portion 143 is arranged on the 3rd pipe arrangement 48c side.; waste gas flows downwards in the inside of the first pipe arrangement 48a; waste gas flows in the inner horizontal of the second pipe arrangement 48b; waste gas flows upward in the inside of the 3rd pipe arrangement 48c, and the explosion ash content trap portion 143 consisting of the first trap portion 144 and the second trap portion 145 is configured in the inlet portion of the 3rd pipe arrangement 48c, the i.e. top of the second funnel 142.
It should be noted that, the structure of explosion ash content trap portion 143 (the first trap portion 144, the second trap portion 145) is the structure roughly the same with above-mentioned each embodiment, therefore omit detailed explanation.
Thereby, when waste gas arrives the explosion ash content trap portion 143 of the 3rd pipe arrangement 48c from the first pipe arrangement 48a by the second pipe arrangement 48b, first by the first high trap portion 144 of aperture opening ratio, trap the explosion ash content that particle diameter is large, then by the second low trap portion 145 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 145 after being removed by the first trap portion 144, therefore, to the large explosion ash content of the mobile particle diameter of the second trap portion 145, almost do not have, thereby the damage of the second trap portion 145 causing because of the large explosion ash content of this particle diameter is suppressed.
In addition, the explosion ash content being trapped by the first trap portion 144 or the second trap portion 145 falls and stockpiles in this second funnel 142 to the second funnel 142, but the aperture opening ratio of the first trap portion 144 is than the second trap portion 145 height, therefore the explosion ash content, being trapped by the second trap portion 145 is fallen and stockpiles in this second funnel 142 to the second funnel 142 by the first trap portion 144.
So, in the emission-control equipment of embodiment 7, explosion ash content trap portion 143 is arranged on along the inlet portion (bottom) of the 3rd pipe arrangement 48c of the vertical in flue gas leading 48, as this explosion ash content trap portion 143, is provided with the first trap portion 144 that aperture opening ratio is high and there is the second trap portion 145 of the aperture opening ratio lower than the aperture opening ratio of the first trap portion 144.
Thereby, after in flue gas leading 48, mobile waste gas reclaims heat by heat recovery portion, by trapping at the first high trap portion 144 of the 3rd pipe arrangement 48c split shed rate the explosion ash content that particle diameter is large, then by the second low trap portion 145 of aperture opening ratio, trap the explosion ash content that particle diameter is little, then by the harmful substance portion of removing, harmful substance is removed.Therefore, what the waste gas that contains the explosion ash content that particle diameter is large flowed to the second trap portion 145 does not almost have, and obstruction, abrasion, the damage of the second trap portion 145 being caused by the large explosion ash content of particle diameter are inhibited, thereby can suitably trap all the time explosion ash content.
Embodiment 8
Figure 13 is the concise and to the point side view that represents the related emission-control equipment of embodiments of the invention 7, Figure 14 is the concise and to the point top view that represents the emission-control equipment of embodiment 8, Figure 15-1st, represents the stereogram of the first trap portion in the related emission-control equipment of embodiments of the invention 8, and Figure 15-2 and Figure 15-3rd represent the concise and to the point figure of the variation of the first trap portion in the emission-control equipment of embodiment 8.It should be noted that, for the member with the function identical with the above embodiments, be marked with identical Reference numeral and omit detailed explanation.
In the emission-control equipment of embodiment 8, as shown in FIG. 13 and 14, heat recovery portion in flue gas leading 48 and harmful substance are removed between portion and are provided with the explosion ash content trap portion 150 that can trap the explosion ash content in waste gas, and explosion ash content trap portion 150 comprises: first trap portion 151 with high aperture; There is the second trap portion 152 of low aperture opening ratio.And, below the bending part 153 of the first pipe arrangement 48a and the second pipe arrangement 48b, be provided with inlet portion in funnel 154, the first trap portions 151 and the second trap portion 152 and the second pipe arrangement 48b, that is to say that funnel 154 closely configures.In addition, the interior perimembranous in the bending part 153 of the first pipe arrangement 48a and the second pipe arrangement 48b is provided with waste gas and helps stream portion (guide portion) 155 to the peripheral part side guiding of bending part 153.
The first trap portion 151 has anterior trap portion 151a and the rear portion trap portion 151b that the front and back on the flow direction of waste gas configure with predetermined distance.This front portion trap portion 151a and rear portion trap portion 151b are roughly the same structure, and consist of multiple shields 161 that can fall for the explosion ash content in waste gas collides.This shield 161 as shown in Figure 14 and Figure 15-1, along the vertical of intersecting with the flow direction of waste gas and in the horizontal direction of intersecting with the flow direction of waste gas with predetermined distance configuration, and can make the explosion ash content in waste gas collide and fall.That is, shield 161 is the central portion of the sheet material of length that makes regulation on its left and right directions and sentences the V-shape of predetermined angular bending.And multiple shields 161 configure and separate in the horizontal direction predetermined distance along vertical and configure.In this case, in anterior trap portion 151a and rear portion trap portion 151b, the allocation position of the horizontal direction in each shield 161 mutually stagger (zigzag).It should be noted that, as the first trap portion 151, be provided with anterior trap portion 151a and rear portion trap portion 151b, two sections of configurations before and after being made as thus, are configured to or irregularly configuration but can be also three sections.
On the other hand, as shown in FIG. 13 and 14, the second trap portion 152 is only arranged on the peripheral part side of the bending part 153 in flue gas leading 48.That is, the second trap portion 152 is at the inlet portion place of the second pipe arrangement 48b extending along horizontal direction, to erect setting from its bottom to the mode that roughly extend the top of vertical.And, this second trap portion 152 is in the ground configuration of the upper whole region of left and right directions (width) at the inlet portion of the second pipe arrangement 48b, and on above-below direction (short transverse), be only arranged on lower side, on top, be provided with thus peristome 156.
Thereby, when waste gas arrives explosion ash content trap portion 150, first by the first high trap portion 151 of aperture opening ratio, for the large explosion ash content of particle diameter, collide and make it fall trapping, then by the second low trap portion 152 of aperture opening ratio, trap the explosion ash content that particle diameter is little.Therefore, the explosion ash content that in waste gas, particle diameter is large flows to the second trap portion 152 after being removed by the first trap portion 151, therefore, to the large explosion ash content of the mobile particle diameter of the second trap portion 152, almost do not have, thereby the damage of the second trap portion 152 causing because of the large explosion ash content of this particle diameter is suppressed.
In addition, at the place, inner side of the bending part 153 of the first pipe arrangement 48a and the second pipe arrangement 48b, by helping the central side guiding of stream portion 155 to bending part 153, peel off thus it and flow and flow velocity is reduced.And, waste gas flows to the second pipe arrangement 48b by bending part 153 from the first pipe arrangement 48a, therefore, the velocity ratio of the peripheral part side at bending part 153 of this waste gas is fast at the flow velocity of interior perimembranous side, thereby the explosion ash content in waste gas is by its inertia force and in the peripheral part side flow of bending part 153.Therefore,, after removing by the first trap portion 151 the explosion ash content that particle diameter is large, the waste gas that comprises the explosion ash content that particle diameter is little is trapped efficiently by the second trap portion 152 that is configured in this position.
It should be noted that, the shape of the first trap portion 151 (anterior trap portion 151a, rear portion trap portion 151b) is not limited to this shape.For example, as shown in Figure 15-2, also can be made as the shield 162 of the shape of the sheet material bending that is the length that makes regulation.In this case, shield 162 is towards the rightabout bending of the flow direction of waste gas.In addition, as shown in Figure 15-3, also can be made as the shield 163 that is the central portion of the sheet material of length that makes regulation on its left and right directions and sentences the shape of predetermined angular bending.In this case, shield 163 is towards the flow direction bending of waste gas.
It should be noted that, the shape of each shield 161,162,163 is not limited to these shapes.But, in the rightabout bending of the flow direction towards waste gas as such in shield 162,162 or the situation of bending, can trap efficiently the explosion ash content comprising in waste gas.On the other hand, in the case of as shield 163 towards the flow direction bending of waste gas or bending, can trap efficiently the explosion ash content comprising in waste gas, and can make the flow resistance of waste gas reduce to reduce the pressure loss.
So, in the emission-control equipment of embodiment 8, as explosion ash content trap portion 150, be provided with the first trap portion 151 and second trap portion 152 with the aperture opening ratio lower than the aperture opening ratio of the first trap portion 151 that aperture opening ratio is high, as the first trap portion 151, be provided with anterior trap portion 151a and the rear portion trap portion 151b with multiple shields 161,162,163 that can fall for the explosion ash content in waste gas collides, on the other hand, the second trap portion 152 is only arranged on to the peripheral part side of the bending part 153 in flue gas leading 48.
Thereby, because the explosion ash content in waste gas and multiple shield 161,162,163 collides and fall to funnel 154, utilize thus the first trap portion 151 to trap, the amount of the explosion ash content mobile to the second trap portion 152 is reduced, thereby can reduce the damage of the second trap portion 152 causing because of explosion ash content.In addition, the waste gas of bending part 153 is because the explosion ash content in this waste gas is because its inertia force is in the peripheral part side flow of bending part 153, thereby can be trapped efficiently by the second trap portion 152 of the peripheral part side that is arranged on this bending part 153.
In addition, in the emission-control equipment of embodiment 8, as the first trap portion 151, be provided with anterior trap portion 151a and rear portion trap portion 151b, two sections of configurations before and after being formed as.Thereby, waste gas mobile become low pressure loss and inertia force also a little less than, therefore can trap reliably explosion ash content by explosion ash content trap portion 150.
It should be noted that, in the above embodiments 6,8, the shield 161,162,163 of the shield of the first trap portion 101,111,121,131,136 104,112,122,132,137 and the first trap portion 151 is made as to plate shape, but be not limited to this, also can be made as mesh screen that is cancellous woven wire or there is vertical slit or horizontal slit etc.
It should be noted that, in the above embodiments 1 to 6, explosion ash content trap portion 60,90,100 is arranged on to the entrance side of the second pipe arrangement 48b, in embodiment 7, explosion ash content trap portion 143 is arranged on to the entrance side of the 3rd pipe arrangement 48c, but is not limited to this position.For example also can be not for the bend of pipe arrangement is set to line part, and be provided with multiple the first trap portions or the second trap portion.
Description of reference numerals is as follows:
10 fine coal burning boilers
11 smelting furnaces
21,22,23,24,25 combustion furnaces
40 flues
41,42 superheaters (heat recovery portion)
43,44 reheaters (heat recovery portion)
45,46,47 economizers (heat recovery portion)
48 flue gas leadings (exhaust passageway)
50 selective reduction type catalyst (harmful substance is removed portion)
51 electric precipitation machines (harmful substance is removed portion)
53 desulfurizers (harmful substance is removed portion)
60,90,100,143,150 explosion ash content trap portions
61,101,111,121,131,136,144,151 first trap portions
62,91,92,93,94,95,102,145,152 second trap portions
63,103,154 funnels
65,155 help stream portion (guide portion)
71 bolsters
72 drive units
75 control device
76 velocity sensors
78 elastic components
81 air pipe arrangements
82 injection nozzles
83 air supply pipe arrangements
84 open and close valves
104,112,122,132,137,161,162,163 shields
105,113,123,133,138 supporting members
141 first funnels
142 second funnels
Claims (according to the modification of the 19th article of treaty)
1. (after revising) a kind of emission-control equipment, is characterized in that,
Described emission-control equipment possesses:
Exhaust passageway, it can flow for burnt gas;
Heat recovery portion, it is located at described exhaust passageway and can reclaims the heat in waste gas;
Harmful substance is removed portion, and it is arranged on described in the ratio in described exhaust passageway heat recovery portion by the position in the downstream of the flow direction of waste gas, and can remove the harmful substance in waste gas;
Explosion ash content trap portion, its described heat recovery portion and described harmful substance being arranged in described exhaust passageway is removed between portion, and can trap the explosion ash content in waste gas,
Described explosion ash content trap portion has:
The first trap portion, it has the aperture opening ratio of pre-set regulation;
The second trap portion, it is arranged on the position by the downstream of the flow direction of waste gas than described the first trap portion, and has the aperture opening ratio lower than the aperture opening ratio of described the first trap portion,
Described exhaust passageway has at mutual orthogonal coconnected the first path of direction and alternate path roughly, on described first path of upstream side of flow direction that is positioned at waste gas, be provided with described heat recovery portion, on the described alternate path in downstream of flow direction that is positioned at waste gas, be provided with described harmful substance and remove portion, described explosion ash content trap portion is arranged on described alternate path side
The inner side at the turning the interconnecting part of described the first trap portion between described the first path and described alternate path is configured in the position of the upstream side of the flow direction of waste gas downwards obliquely, and described the second trap portion is configured in the position in the downstream of the flow direction of waste gas downwards obliquely from the top of described alternate path.
2. (deletion)
3. (after revising) emission-control equipment according to claim 1, is characterized in that,
Below the interconnecting part between described the first path and described alternate path, be provided with the funnel that can stockpile explosion ash content, described the first trap portion is located at described funnel or described alternate path, and described the second trap portion is located at described alternate path.
4. (after revising), according to the emission-control equipment described in claim 1 or 3, is characterized in that,
The inner side at the turning in the interconnecting part between described the first path and described alternate path is provided with the guide portion to the guided outside at described turning by waste gas.
5. (deletion)
6. (after revising) emission-control equipment according to claim 1, is characterized in that,
The bottom of described the first trap portion and described funnel separate the configuration with gap of regulation.
7. emission-control equipment according to claim 1, is characterized in that,
Described the second trap portion can change downward tilt according to the flow velocity of waste gas.
8. emission-control equipment according to claim 1, is characterized in that,
Described emission-control equipment is also provided with gas injection portion, and the downstream of the flow direction of the waste gas that this gas injection portion can be from described the second trap portion is towards described the second trap portion gas jet.
9. emission-control equipment according to claim 1, is characterized in that,
Described the first trap portion has: multiple shields that can fall for the explosion ash content in waste gas collides; In the direction of intersecting with the flow direction of waste gas with the supporting member of the described multiple shields of predetermined distance supporting.
10. emission-control equipment according to claim 1, is characterized in that,
Described the first trap portion has multiple shields, described multiple shield is along the vertical of intersecting with the flow direction of waste gas, and with predetermined distance configuration, can collide and it is fallen for the explosion ash content in waste gas in the horizontal direction of intersecting with the flow direction of waste gas.
11. according to the emission-control equipment described in claim 9 or 10, it is characterized in that,
Described multiple shields of described the first trap portion are multistage configuration along the flow direction of waste gas.
12. emission-control equipments according to claim 10, is characterized in that,
Described shield is shape of a mesh or shape of slit.
13. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first planar portions that the first and the flow direction of waste gas intersect, it two is parallel portion parallel with the flow direction of waste gas, and it three is intersect with the flow direction of waste gas and be positioned at the second planar portions of the position of swimming on the lower than the first planar portions.
14. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the rightabout of the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
15. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
16. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first fold bent face portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bendings and be positioned at the second bending face of the position of swimming on the lower than first fold bent face portion on the flow direction of waste gas.
Claims (16)
1. an emission-control equipment, is characterized in that,
Described emission-control equipment possesses:
Exhaust passageway, it can flow for burnt gas;
Heat recovery portion, it is located at described exhaust passageway and can reclaims the heat in waste gas;
Harmful substance is removed portion, and it is arranged on described in the ratio in described exhaust passageway heat recovery portion by the position in the downstream of the flow direction of waste gas, and can remove the harmful substance in waste gas;
Explosion ash content trap portion, its described heat recovery portion and described harmful substance being arranged in described exhaust passageway is removed between portion, and can trap the explosion ash content in waste gas,
Described explosion ash content trap portion has:
The first trap portion, it has the aperture opening ratio of pre-set regulation;
The second trap portion, it is arranged on the position by the downstream of the flow direction of waste gas than described the first trap portion, and has the aperture opening ratio lower than the aperture opening ratio of described the first trap portion.
2. emission-control equipment according to claim 1, is characterized in that,
Described exhaust passageway has at mutual orthogonal coconnected the first path of direction and alternate path roughly, on described first path of upstream side of flow direction that is positioned at waste gas, be provided with described heat recovery portion, on the described alternate path in downstream of flow direction that is positioned at waste gas, be provided with described harmful substance and remove portion, described explosion ash content trap portion is arranged on described alternate path side.
3. emission-control equipment according to claim 2, is characterized in that,
Below the interconnecting part between described the first path and described alternate path, be provided with the funnel that can stockpile explosion ash content, described the first trap portion is located at described funnel or described alternate path, and described the second trap portion is located at described alternate path.
4. according to the emission-control equipment described in claim 2 or 3, it is characterized in that,
The inner side at the turning in the interconnecting part between described the first path and described alternate path is provided with the guide portion to the guided outside at described turning by waste gas.
5. emission-control equipment according to claim 2, is characterized in that,
The inner side at the turning the interconnecting part of described the first trap portion between described the first path and described alternate path is configured in the position of the upstream side of the flow direction of waste gas downwards obliquely, and described the second trap portion is configured in the position in the downstream of the flow direction of waste gas downwards obliquely from the top of described alternate path.
6. emission-control equipment according to claim 5, is characterized in that,
The bottom of described the first trap portion and described funnel separate the configuration with gap of regulation.
7. emission-control equipment according to claim 1, is characterized in that,
Described the second trap portion can change downward tilt according to the flow velocity of waste gas.
8. emission-control equipment according to claim 1, is characterized in that,
Described emission-control equipment is also provided with gas injection portion, and the downstream of the flow direction of the waste gas that this gas injection portion can be from described the second trap portion is towards described the second trap portion gas jet.
9. emission-control equipment according to claim 1, is characterized in that,
Described the first trap portion has: multiple shields that can fall for the explosion ash content in waste gas collides; In the direction of intersecting with the flow direction of waste gas with the supporting member of the described multiple shields of predetermined distance supporting.
10. emission-control equipment according to claim 1, is characterized in that,
Described the first trap portion has multiple shields, described multiple shield is along the vertical of intersecting with the flow direction of waste gas, and with predetermined distance configuration, can collide and it is fallen for the explosion ash content in waste gas in the horizontal direction of intersecting with the flow direction of waste gas.
11. according to the emission-control equipment described in claim 9 or 10, it is characterized in that,
Described multiple shields of described the first trap portion are multistage configuration along the flow direction of waste gas.
12. emission-control equipments according to claim 10, is characterized in that,
Described shield is shape of a mesh or shape of slit.
13. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first planar portions that the first and the flow direction of waste gas intersect, it two is parallel portion parallel with the flow direction of waste gas, and it three is intersect with the flow direction of waste gas and be positioned at the second planar portions of the position of swimming on the lower than the first planar portions.
14. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the rightabout of the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
15. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first surface portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bending on the flow direction of waste gas and is positioned at the second curved face part of the position of swimming on the lower than first surface portion.
16. emission-control equipments according to claim 1, is characterized in that,
Described the second trap portion is arranged alternately and is concaveconvex shape by following three members on left and right directions, the first fold bent face portion of first bending on the flow direction of waste gas, it two is parallel portion parallel with the flow direction of waste gas, and it three is bendings and be positioned at the second bending face of the position of swimming on the lower than first fold bent face portion on the flow direction of waste gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011250862A JP5854777B2 (en) | 2011-11-16 | 2011-11-16 | Exhaust gas treatment equipment |
| JP2011-250862 | 2011-11-16 | ||
| PCT/JP2012/078536 WO2013073393A1 (en) | 2011-11-16 | 2012-11-02 | Exhaust gas treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103765104A true CN103765104A (en) | 2014-04-30 |
| CN103765104B CN103765104B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280040961.4A Expired - Fee Related CN103765104B (en) | 2011-11-16 | 2012-11-02 | Emission-control equipment |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5854777B2 (en) |
| CN (1) | CN103765104B (en) |
| TW (1) | TWI503508B (en) |
| WO (1) | WO2013073393A1 (en) |
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- 2012-11-02 CN CN201280040961.4A patent/CN103765104B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111936426A (en) * | 2018-03-28 | 2020-11-13 | 三菱动力株式会社 | Drying device for water to be treated and boiler system provided with same |
| TWI720730B (en) * | 2019-01-30 | 2021-03-01 | 日商三菱動力股份有限公司 | Reducing agent supply device and denitration device |
| US11583803B2 (en) | 2019-01-30 | 2023-02-21 | Mitsubishi Heavy Industries, Ltd. | Reducing agent supply device and denitration device |
| CN117167745A (en) * | 2023-09-20 | 2023-12-05 | 上海宝达环境科技有限公司 | Small household garbage incinerator grate with waste heat utilization device |
| CN117167745B (en) * | 2023-09-20 | 2024-05-07 | 上海宝达环境科技有限公司 | Small household garbage incinerator grate with waste heat utilization device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5854777B2 (en) | 2016-02-09 |
| WO2013073393A1 (en) | 2013-05-23 |
| TWI503508B (en) | 2015-10-11 |
| CN103765104B (en) | 2016-01-20 |
| JP2013104641A (en) | 2013-05-30 |
| TW201339509A (en) | 2013-10-01 |
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