CN210845566U - Coal fired boiler denitration flue ash removal device in advance - Google Patents
Coal fired boiler denitration flue ash removal device in advance Download PDFInfo
- Publication number
- CN210845566U CN210845566U CN201921876384.8U CN201921876384U CN210845566U CN 210845566 U CN210845566 U CN 210845566U CN 201921876384 U CN201921876384 U CN 201921876384U CN 210845566 U CN210845566 U CN 210845566U
- Authority
- CN
- China
- Prior art keywords
- fly ash
- flue
- ash
- coal
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to a pre-ash-removing device for denitration flues of coal-fired boilers, which adopts the technical proposal that a first fly ash separation area for being impacted by fly ash is arranged in a first vertical flue, a second fly ash separation area for being impacted by fly ash is arranged in a second vertical flue, a first fly ash stop block consisting of upper and lower rows of triangular prisms is arranged in the first fly ash separation area, the two rows of first fly ash stop blocks are arranged in a staggered way, a second fly ash stop block consisting of upper and lower rows of rectangular prisms is arranged in the second fly ash separation area, and the two rows of second fly ash stop blocks are arranged in a staggered way, the utility model discloses a fly ash stop blocks are additionally arranged in the two vertical flues, the running direction of the fly ash is changed through the impact of the fly ash on the stop blocks, the running speed is reduced at the same time, the final large-particle fly, the increase of the resistance of the stop block to the flue gas is reduced, a part of fly ash is removed, and the operation burden of the catalyst is reduced.
Description
Technical Field
The utility model relates to a pulverized coal fired boiler SCR reactor entry flue of thermal power plant, especially a coal fired boiler denitration flue ash handling equipment in advance.
Background
In the production process of most of the existing coal-fired power generation enterprises, fly ash in a vertical flue at the tail of a coal-fired boiler is naturally settled and collected, then is sent to an ash storage bin, and then is sent to an ash warehouse in a positive pressure pneumatic conveying mode.
At present, the denitration technology of a coal-fired unit generally adopts a Selective Catalytic Reduction (SCR) method, adopts ammonia as a reducing agent in the presence of a catalyst, and reduces NO in flue gas into N in the presence of oxygen2。
At present, the SCR has a plurality of problems in actual operation, the problems are mostly related to the operation state of the catalyst, along with the continuous increase of coal price in China, the coal source of a coal-fired unit cannot be guaranteed, the quality of coal for combustion is poor, the ash content of the coal is higher than the design value, and the increase of the ash content of the coal inevitably increases the load of the catalyst, so that the problems of ash accumulation and abrasion of the SCR catalyst of part of power generation enterprises are caused. The problems can cause the performance of the catalyst to be reduced, and finally, the emission of nitrogen oxides cannot reach the standard, so that the problem to be solved by power generation enterprises is urgently solved. How to remove a part of fly ash before the fly ash in the flue gas enters into the SCR reactor for catalytic reaction is a concern for the technicians in the field.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model aims at providing a coal fired boiler denitration flue ash removal device in advance, can effectively solve the problem of SCR reactor entry flue flying dust separation.
The utility model provides a technical scheme be:
a pre-dedusting device for a denitration flue of a coal-fired boiler comprises an SCR reactor and an inlet flue connected to a flue gas inlet at the upper part of the SCR reactor, wherein the inlet flue comprises a first horizontal flue positioned below the flue gas inlet of the SCR reactor, a first vertical flue and a second vertical flue which are respectively connected to two ends of the first horizontal flue, and a second horizontal flue connected to the upper end of the second vertical flue, the outlet of the second horizontal flue is connected with the flue gas inlet of the SCR reactor, a first fly ash separation zone for being impacted by fly ash is arranged in the first vertical flue, a second fly ash separation zone for being impacted by fly ash is arranged in the second vertical flue, a first fly ash baffle block consisting of an upper row of triangular prisms and a lower row of triangular prisms is arranged in the first fly ash separation zone, the two rows of first fly ash baffles are arranged in a staggered manner, and a second fly ash baffle block consisting of an upper row of, two rows of second fly ash check blocks are arranged in a staggered mode, a first sedimentation ash storage ash hopper with an open top is arranged at the bottom of the first horizontal flue below the first fly ash check blocks, and a second sedimentation ash storage ash hopper with an open top is arranged at the bottom of the first horizontal flue below the second fly ash check blocks.
Preferably, the cross section of the first fly ash stop block is in an isosceles triangle shape, the bottom surfaces of two ends of the triangular prism of the first fly ash stop block are respectively fixedly connected with the inner walls of two sides of the first vertical flue, and the axial direction of the first fly ash stop block is mutually perpendicular to the axial direction of the first vertical flue; the first fly ash dog of the row that is located the top is first dog on, the first fly ash dog of the row that is located the below keeps off for first dog down, be the alternate equipartition side by side between each first dog on, the contained angle of the two waists of the cross-section isosceles triangle of dog on first simultaneously is vertical up, be the alternate equipartition side by side between each first dog down, the contained angle of the two waists of the cross-section isosceles triangle of dog on first dog down is vertical up and be located the clearance center of two first dog on and the upper end of first dog down flushes with the lower extreme of first dog on simultaneously, constitute the first crisscross arrangement formula fly ash that most advanced is up and block the structure.
Preferably, the cross section of the second fly ash stop block is a quadrangle formed by splicing the bottom edges of two isosceles triangles, the bottom surfaces of two ends of a quadrangular prism of the second fly ash stop block are respectively fixedly connected with the inner walls of two sides of the second vertical flue, and the axial direction of the second fly ash stop block is mutually perpendicular to the axial direction of the second vertical flue; the dog is gone up for the second to the one row of second fly ash dog that is located the top, the dog is down for the second to the one row of second fly ash dog that is located the below, be side by side alternate equipartition between the dog on each second, the contained angle of two isosceles triangle sides in each second fly ash dog cross-section is vertical up and vertical down respectively, be side by side alternate equipartition between the dog under each second, dog up section isosceles triangle contained angle just is located the clearance center of dog on two seconds under the second simultaneously, constitute the tip respectively up and the crisscross arrangement formula fly ash of second down and block the structure.
The utility model discloses novel structure is unique, and is simple reasonable, easy production, easy operation, reform transform on current SCR reactor entry flue can, through add the flying dust dog in two vertical flues, through the striking of flying dust to the dog, change the traffic direction of flying dust, reduce the functioning speed simultaneously, the flying dust of final large granule falls to the ash bucket under the effect of gravity and collects, the dog adopts two rows of staggered arrangement from top to bottom, reduce the increase of dog to the flue gas resistance, before the flying dust gets into SCR reactor catalyst in the flue gas, remove a part of flying dust, alleviate catalyst operation burden, and not deposition, high durability and convenient use, and high efficiency, be the innovation on the coal fired boiler denitration flue dust removal device in advance, and has good social and economic benefits.
Drawings
Fig. 1 is a schematic structural diagram (with the inlet flue cut away) of the present invention, wherein the direction of the arrow indicates the flow direction of the flue gas.
FIG. 2 is a sectional side view of the first fly ash separation zone of the present invention.
Fig. 3 is a perspective view of a single first fly ash stop according to the present invention.
Fig. 4 is a side view of the first fly ash stop of the present invention.
FIG. 5 is a sectional side view of a second fly ash separation zone of the present invention.
Fig. 6 is a perspective view of a single second fly ash stop according to the present invention.
Fig. 7 is a side view of a second fly ash stop of the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-7, the present invention comprises an SCR reactor 13 and an inlet flue connected to a flue gas inlet at the upper part of the SCR reactor 13, wherein the inlet flue comprises a first horizontal flue 3 located below the flue gas inlet of the SCR reactor, a first vertical flue 1 and a second vertical flue 5 connected to both ends of the first horizontal flue 3, and a second horizontal flue 6 connected to the upper end of the second vertical flue 5, the outlet of the second horizontal flue 6 is connected to the flue gas inlet of the SCR reactor 4, a first fly ash separation zone 7 for being impacted by fly ash is provided in the first vertical flue 1, a second fly ash separation zone 8 for being impacted by fly ash is provided in the second vertical flue 5, a first fly ash stop block formed by upper and lower rows of triangular prisms is provided in the first fly ash separation zone 7, the two rows of first fly ash stop blocks are arranged in an interlaced manner, a second fly ash stop formed by upper and lower rows of quadrangular prisms is provided in the second separation zone 8, two rows of second fly ash stop blocks are arranged in a staggered mode, a first sedimentation ash storage ash bucket 10a with an open top is arranged at the bottom of the first horizontal flue 3 right below the first fly ash stop blocks, and a second sedimentation ash storage ash bucket 10b with an open top is arranged at the bottom of the first horizontal flue 3 right below the second fly ash stop blocks.
In order to ensure the using effect, the section of the first fly ash stop block is in an isosceles triangle shape, the bottom surfaces of two ends of a triangular prism of the first fly ash stop block are respectively and fixedly connected with the inner walls of two sides of the first vertical flue, and the axial direction of the first fly ash stop block is mutually vertical to the axial direction of the first vertical flue; the upper row of first fly ash stoppers are first upper stoppers 71, the lower row of first fly ash stoppers are first lower stoppers 72, the first upper stoppers 71 are uniformly distributed side by side at intervals, the included angle between two isosceles triangle sides of the cross section of each first upper stopper 71 is vertically upward, the first lower stoppers 72 are uniformly distributed side by side at intervals, the included angle between two isosceles triangle sides of the cross section of each first lower stopper 72 is vertically upward and is positioned in the gap center of the two first upper stoppers, and the upper end of each first lower stopper 72 is flush with the lower end of each first upper stopper 71, so that a first staggered fly ash stopper structure with the upward tip is formed; the included angle a between two isosceles triangles of the section of the first fly ash stop block is less than 60 degrees.
The cross section of the second fly ash block is a quadrangle formed by splicing the bottom edges of two isosceles triangles, as shown in the cross section of the second fly ash block in fig. 7, the bottom edges of a first isosceles triangle 8a positioned above and a second isosceles triangle 8b positioned below are spliced together, and the bottom edges of the first isosceles triangle 8a and the second isosceles triangle 8b are equal to each other, so that a quadrangle is formed; the bottom surfaces of two ends of the quadrangular prism of the second fly ash stop block are respectively fixedly connected with the inner walls of two sides of the second vertical flue, and the axial direction of the second fly ash stop block is mutually vertical to the axial direction of the second vertical flue; the one row of second fly ash dog that is located the top is dog 81 on the second, the one row of second fly ash dog that is located the below is dog 82 under for the second, be the alternate equipartition side by side between the dog 81 on each second, the contained angle of two isosceles triangle sides in each second fly ash dog cross-section is vertical up respectively and vertical down, be the alternate equipartition side by side between the dog 82 under each second, dog 81 down cross-section isosceles triangle contained angle is located the clearance center of dog under two seconds on the second simultaneously, constitute the tip respectively up and the crisscross arrangement formula fly ash of second down and block the structure.
The included angle b of two isosceles triangle waists of second fly ash dog cross-section, c all are less than 60, and the angle of tip contained angle b up is less than the angle of tip contained angle c down, like this after fly ash from the bottom striking second fly ash dog, the change of fly ash direction, fly ash speed reduces at the same time extremely fast, the fly ash of final large granule falls the second under the effect of gravity and subsides grey storage hopper and collect, the contained angle b of the first isosceles triangle-shaped 8a that is located the top is less than contained angle c, can guarantee like this that the domatic landing that can follow the second and go up the dog top when the change direction gets into the second and go up the dog within range after the fly ash striking, prevent domatic deposition.
The upper end of the second lower block 82 is higher than the lower end of the second upper block 81, that is, as shown in fig. 5, the upper end of the second lower block is inserted into the gap of the second upper block, so that the whole coverage area of the second fly ash block can be ensured, and all fly ash can be impacted.
First vertical flue 1 lower extreme is provided with the first throat passageway 2 that the cross-section is big-end-up's small circular truncated cone, and 5 lower extremes of second vertical flue are provided with the second throat passageway 4 that the cross-section is big-end-up's small circular truncated cone, and the effect of two throat passageways plays the effect of a direction to the flying dust of whereabouts, and the upper shed coverage area of depositing ash storage ash bucket all is greater than the lower mouthful coverage area of corresponding throat passageway simultaneously, can guarantee like this that the flying dust of whereabouts can get into the ash storage ash bucket of subsiding that corresponds smoothly.
And a plurality of arc-shaped guide plates 9 are arranged at corners of the second vertical flue 5 and the second horizontal flue 3 to guide flue gas, so that downstream ammonia escape is prevented from increasing due to uneven distribution of flue gas flow entering the SCR reactor.
The first sedimentation ash storage hopper 10a is provided with a first ash discharge channel 11a communicated with the inner cavity of the first sedimentation ash storage hopper, and the first ash discharge channel 11a is provided with a first valve 12 a; and a second ash discharge channel 11b communicated with the inner cavity of the second settling ash storage hopper 10b is arranged on the second settling ash storage hopper, a second valve 12b is arranged on the second ash discharge channel 11b, and the stored dust can be conveyed to an ash warehouse by opening the corresponding valve for periodic cleaning.
The SCR reactor is a boiler selective catalytic reduction reactor of a coal-fired power plant, and the technology is the prior art of the coal-fired power plant.
When the utility model is used, the dust-containing flue gas enters from the upper opening of the first vertical flue 1, the flow direction of the flue gas is shown by an arrow in the first vertical flue 1 in figure 1, the air current runs from top to bottom in the first vertical flue, when the dust-containing flue gas enters the first fly ash separation area 7, the fly ash impacts the first fly ash stop dog from top to bottom, according to the running track of the fly ash and the running track rule after impact, after the fly ash impacts the first upper stop dog, the change of the fly ash direction is realized, simultaneously the fly ash speed is extremely reduced, finally the fly ash with large particles falls to the first sedimentation ash storage hopper under the action of gravity to be collected, the pre-removing purpose of the fly ash is achieved, the first fly ash stop dog adopts an upper row and a lower row staggered arrangement, thus, the gap between the first fly ash stop dogs in the same row is used for the air current to pass, the increase of the resistance of the flue gas by the, because the upward tip of the first lower stop block is positioned in the center of the gap between the two first upper stop blocks, the fly ash in the part of passing airflow can be collided and separated on the first lower stop block, so that the first-stage fly ash separation is carried out when the dust-containing airflow passes through the first vertical flue, the separated airflow enters the second vertical flue 5 through the first horizontal flue 3, the flow direction of the flue gas is shown by an arrow in the second vertical flue 5 in figure 1, the airflow runs from bottom to top in the second vertical flue, when the dust-containing flue gas enters the second fly ash separation zone 8, the fly ash collides the second fly ash stop block from bottom to top, according to the running track of the fly ash and the running track rule after collision, the direction of the fly ash is changed after the fly ash collides the second lower stop block, simultaneously, the speed is extremely reduced, and finally the large-particle fly ash falls to the first settling ash storage hopper for collection under the action of gravity, the purpose of pre-removing the second level of the fly ash is achieved, the second fly ash stop blocks are arranged in an upper row and a lower row in a staggered manner, so that the gap between the second fly ash stop blocks in the same row is used for allowing airflow to pass through, the increase of the stop blocks to the smoke resistance is reduced, and meanwhile, when dusty airflow enters the second row of the second fly ash stop blocks, because the downward pointed end of the second upper stop block is positioned at the gap center of the two second lower stop blocks, the fly ash in the airflow passing through the part can be impacted and separated on the second upper stop block, so that the second level fly ash separation is carried out when the dusty airflow passes through the second vertical flue, compared with the prior art, the utility model has the advantages of novel and unique structure, simplicity, reasonableness, easy production and easy operation, can be improved on the inlet flue of the existing SCR reactor, the fly ash stop blocks are additionally arranged in the two vertical flues, the running direction of the, the fly ash with large particles finally falls into the ash bucket under the action of gravity to be collected, the stop blocks are arranged in a staggered mode in an upper row and a lower row, the increase of the resistance of the stop blocks to the flue gas is reduced, a part of fly ash is removed before the fly ash in the flue gas enters the catalyst of the SCR reactor, the operation burden of the catalyst is relieved, no ash is accumulated, the use is convenient, the effect is good, the device is an innovation on a pre-ash removal device of a denitration flue of a coal-fired boiler, and good social and economic benefits are achieved.
Claims (8)
1. A pre-ash-removing device for a denitration flue of a coal-fired boiler comprises an SCR reactor (13) and an inlet flue connected to a flue gas inlet at the upper part of the SCR reactor (13), wherein the inlet flue comprises a first horizontal flue (3) positioned below the flue gas inlet of the SCR reactor, a first vertical flue (1) and a second vertical flue (5) which are respectively connected with the two ends of the first horizontal flue (3), and a second horizontal flue (6) connected with the upper end of the second vertical flue (5), the outlet of the second horizontal flue (6) is connected with the flue gas inlet of the SCR reactor (13), the pre-ash-removing device is characterized in that a first fly ash separation zone (7) which is impacted by fly ash is arranged in the first vertical flue (1), a second fly ash separation zone (8) which is impacted by fly ash is arranged in the second vertical flue (5), and a first fly ash stop block which is composed of an upper row of fly ash and a lower row of fly ash columns is arranged, two rows of first fly ash stop dogs are arranged in a staggered manner, two rows of second fly ash stop dogs formed by upper and lower quadrangular prisms are arranged in the second fly ash separation zone (8), the two rows of second fly ash stop dogs are arranged in a staggered manner, a first sediment ash storage ash hopper (10a) with an open top is arranged at the bottom of the first horizontal flue (3) under the first fly ash stop dogs, and a second sediment ash storage ash hopper (10b) with an open top is arranged at the bottom of the first horizontal flue (3) under the second fly ash stop dogs.
2. The pre-ash-removing device for the denitration flue of the coal-fired boiler as recited in claim 1, wherein the cross section of the first fly ash block is an isosceles triangle, the bottom surfaces of two ends of the triangular prism of the first fly ash block are respectively fixedly connected with the inner walls of two sides of the first vertical flue, and the axial direction of the first fly ash block is mutually perpendicular to the axial direction of the first vertical flue.
3. The pre-ash-removing device for the denitration flue of the coal-fired boiler according to the claim 2, characterized in that the row of first fly ash stoppers positioned above is a first upper stopper (71), the row of first fly ash stoppers positioned below is a first lower stopper (72), the first upper stoppers (71) are uniformly distributed side by side at intervals, the included angle between two isosceles triangle sides of the cross section of the first upper stopper (71) is vertically upward, the first lower stoppers (72) are uniformly distributed side by side at intervals, the included angle between two isosceles triangle sides of the cross section of the first lower stopper (72) is vertically upward and is positioned in the gap center of the two first upper stoppers, and the upper end of the first lower stopper (72) is flush with the lower end of the first upper stopper (71), so that a first staggered arrangement type fly ash blocking structure with the tip upward is formed.
4. The pre-ash-removing device for the denitration flue of the coal-fired boiler as recited in claim 2, wherein the included angle a between two sides of the isosceles triangle of the cross section of the first fly ash baffle block is less than 60 °.
5. The pre-ash-removing device for the denitration flue of the coal-fired boiler as recited in claim 1, wherein the cross section of the second fly ash block is a quadrangle formed by splicing the bottom edges of two isosceles triangles, the bottom surfaces of two ends of the quadrangular prism of the second fly ash block are respectively fixedly connected with the inner walls of two sides of the second vertical flue, and the axial direction of the second fly ash block is perpendicular to the axial direction of the second vertical flue.
6. The pre-ash-removing device for the denitration flue of the coal-fired boiler according to claim 5, wherein the row of the second fly ash stoppers positioned above is the second upper stopper (81), the row of the second fly ash stoppers positioned below is the second lower stopper (82), the second upper stoppers (81) are uniformly distributed side by side at intervals, the included angle between two isosceles triangle waists of the cross section of each second fly ash stopper is vertically upward and vertically downward, the second lower stoppers (82) are uniformly distributed side by side at intervals, and the included angle between the isosceles triangle of the downward cross section of the second upper stopper (81) is positioned in the gap center of the two second lower stoppers, so as to form a second staggered arrangement type fly ash blocking structure with the tip respectively upward and downward.
7. The pre-ash-removing device for the denitration flue of the coal-fired boiler as recited in claim 5, wherein the included angles b and c of the two isosceles triangles of the cross section of the second fly ash block are both smaller than 60 degrees, and the angle of the included angle b with the tip facing upwards is smaller than the angle of the included angle c with the tip facing downwards.
8. The pre-ash-removing device for the denitration flue of the coal-fired boiler as recited in claim 1, wherein the lower end of the first vertical flue (1) is provided with a first necking channel (2) with a cross section of a big-end-up small circular truncated cone shape, and the lower end of the second vertical flue (5) is provided with a second necking channel (4) with a cross section of a big-end-up small circular truncated cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921876384.8U CN210845566U (en) | 2019-11-04 | 2019-11-04 | Coal fired boiler denitration flue ash removal device in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921876384.8U CN210845566U (en) | 2019-11-04 | 2019-11-04 | Coal fired boiler denitration flue ash removal device in advance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210845566U true CN210845566U (en) | 2020-06-26 |
Family
ID=71295499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921876384.8U Active CN210845566U (en) | 2019-11-04 | 2019-11-04 | Coal fired boiler denitration flue ash removal device in advance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210845566U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146096A (en) * | 2020-09-30 | 2020-12-29 | 无锡华光环保能源集团股份有限公司 | Fly ash collecting device in grate waste incinerator |
| CN113028434A (en) * | 2021-03-08 | 2021-06-25 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Coal fired boiler flying dust discrete denitration flue |
| CN114177751A (en) * | 2021-12-20 | 2022-03-15 | 华能安阳热电有限责任公司 | Thermal power plant is with system of selling off |
-
2019
- 2019-11-04 CN CN201921876384.8U patent/CN210845566U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146096A (en) * | 2020-09-30 | 2020-12-29 | 无锡华光环保能源集团股份有限公司 | Fly ash collecting device in grate waste incinerator |
| CN113028434A (en) * | 2021-03-08 | 2021-06-25 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Coal fired boiler flying dust discrete denitration flue |
| CN114177751A (en) * | 2021-12-20 | 2022-03-15 | 华能安阳热电有限责任公司 | Thermal power plant is with system of selling off |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210845566U (en) | Coal fired boiler denitration flue ash removal device in advance | |
| CN102814119B (en) | Silicon controlled rectifier (SCR) denitration device of waste gas pre-dedusting ammonia spraying disk in power plant | |
| CN201807247U (en) | Flue gas denitration device with gravitational setting pre-dedusting and high effective flue gas rectifying functions | |
| CN204933062U (en) | A kind of coal-burning power plant SCR pre-dedusting device | |
| CN203030186U (en) | Short-range quick-circulation semi-dry method smoke desulfurization reactor | |
| JP2724176B2 (en) | Exhaust gas denitration equipment | |
| CN202212082U (en) | Pre-deduster for SCR (Selective Catalytic Reduction) smoke denitration of coal-fired boiler | |
| CN113522012B (en) | Flue gas denitration ammonia spraying mixing system, static mixer thereof and ammonia spraying control method | |
| US8425850B1 (en) | Large particle ash mitigation system | |
| CN205517272U (en) | High -efficient SCR flue gas denitration system for boiler combustion coal inferior | |
| CN101721860A (en) | Economizer hopper of coal-fired boiler in power plant | |
| CN106390608B (en) | A kind of pre-dedusting device for SCR denitration | |
| CN212998852U (en) | Device for pre-removing coarse particle ash in front of SCR (Selective catalytic reduction) denitration device | |
| CN215388159U (en) | Power plant boiler SCR catalyst abrasionproof decreases protection device | |
| CN107321166B (en) | Semi-dry desulfurization device | |
| CN210448375U (en) | Dust removal device of coal economizer | |
| CN107930391A (en) | A kind of SCR equipment for denitrifying flue gas | |
| CN113522013B (en) | Flue gas denitration ammonia spraying mixing system and static mixer thereof | |
| CN202638271U (en) | Smoke cleaning reactor of partition bin type moving bed | |
| CN201182957Y (en) | Powder dust predissociation air box pulse bag-type dust remover | |
| CN111841155A (en) | Device and method for pre-removing coarse particle ash in front of SCR (Selective catalytic reduction) denitration device | |
| CN215142098U (en) | Active carbon static sorting unit | |
| CN210171219U (en) | Device for preventing SCR denitration catalyst wearing and tearing jam | |
| CN201505508U (en) | Semi-dry flue gas desulfurization tower with uniformly distributed air inlet and stable ash discharge | |
| CN113028434A (en) | Coal fired boiler flying dust discrete denitration flue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |