CN107541576A - Blast furnace roof feeding pressure box release exhaust gas purification recovery system - Google Patents
Blast furnace roof feeding pressure box release exhaust gas purification recovery system Download PDFInfo
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- CN107541576A CN107541576A CN201710990746.5A CN201710990746A CN107541576A CN 107541576 A CN107541576 A CN 107541576A CN 201710990746 A CN201710990746 A CN 201710990746A CN 107541576 A CN107541576 A CN 107541576A
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- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 238000000746 purification Methods 0.000 title claims abstract description 30
- 238000010926 purge Methods 0.000 claims description 33
- 239000000428 dust Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 12
- 238000010248 power generation Methods 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 230000037361 pathway Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229940067573 brown iron oxide Drugs 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 206010046996 Varicose vein Diseases 0.000 description 1
- 229920006266 Vinyl film Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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- Blast Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of blast furnace roof feeding pressure box release exhaust gas purification recovery system, to solve the problems, such as that release exhaust is not purified and reclaimed in the prior art.The system includes gas dust-removing device, the gas dust-removing device treats that the release exhaust output channel that dedusting gas input is used for the pressure box is connected, low-pressure gas Transfer pipe in the blast furnace gas dispatch path that the gas output end of dedusting of gas dust-removing device is used to be connected with blast furnace connects, wherein, there is the release for being used to drive the pressure box to be vented the pressure differential for flowing into low-pressure gas Transfer pipe by gas dust-removing device from release exhaust output channel between release exhaust output channel and low-pressure gas Transfer pipe.Said system can realize purification and recovery to release exhaust by simple, effective, inexpensive mode.
Description
Technical field
The present invention relates to the improvement of local atmosphere pollution sources in blast furnace system, is sent in particular to a kind of blast furnace roof
Expect pressure box release exhaust gas purification recovery system.
Background technology
Needed during operation of blast furnace periodically to the material (i.e. feeding) of body of heater delivery smelting.Due to blast furnace process
During constantly produce blast furnace gas and make body of heater in formation hyperbaric environment, in order to realize feeding, feeding is provided with blast furnace roof
Pressure box, material to be delivered are previously positioned in the pressure box, are then shut off the pressure box and to its inflation so that inside it
Reach with pressure balance in blast furnace, then opening the feeding output channel of pressure box bottom again makes material be discharged into body of heater,
After the completion of close feeding output channel and open pressure box release exhaust output channel make pressure box be vented release, so as to again
Material is loaded to pressure box.It can be seen that in a feeding cycle, pressure box can undergo charging-inflation-discharge-release four
Process.
Content higher dust and coal gas be present in the release exhaust of pressure box, but the release is not vented in putting into practice into
Row purification and recovery, but it is directly discharged into air.Reason essentially consists in：The release exhaust of pressure box is in blast furnace system operation
Caused local, a small amount of pollution sources, the interests that the release exhaust progress Recovery Purifying to pressure box is obtained are with controlling it
Comparatively speaking the cost paid required for reason, e insufficient to give full play to the enthusiasm that people remove this portion gas of Recovery Purifying；
In addition, the physical state unstability of pressure box release exhaust is higher, the application of dust separation treatment technology also limit.Cause
, blast furnace roof feeding pressure box periodically exhaust release generation atmosphere pollution and noise pollution always up to the present be present in this
Phenomenon.
The content of the invention
It is an object of the invention to provide a kind of blast furnace roof feeding pressure box release exhaust gas purification recovery system, to solve
The problem of release exhaust is not purified and reclaimed in the prior art.
To achieve these goals, according to an aspect of the invention, there is provided a kind of blast furnace roof feeding pressure box unloads
Pressure gas purification-recovery system.The system includes gas dust-removing device, and the gas dust-removing device treats that dedusting gas input is used
Be connected in the release exhaust output channel with the pressure box, the gas output end of dedusting of gas dust-removing device be used for and height
Furnace body connection blast furnace gas dispatch path in low-pressure gas Transfer pipe connection, wherein, release exhaust output channel with
There is the release for being used to drive the pressure box be vented between low-pressure gas Transfer pipe from release exhaust output channel and pass through gas
Body dust arrester and flow into the pressure differential of low-pressure gas Transfer pipe.
Further, for realizing that the release exhaust is flowed into from release exhaust output channel by gas dust-removing device
On the release exhaust dispatch path of the process of low-pressure gas Transfer pipe, it is provided with least from the early stage during pressure box release
The flow regulator of metering function.
Further, for realizing that the release exhaust is flowed into from release exhaust output channel by gas dust-removing device
On the release exhaust dispatch path of the process of low-pressure gas Transfer pipe, it is not provided with blower fan or is provided with only in the pressure box release phase
Between the blower fan that acts of later stage.
It is further that the low-pressure gas Transfer pipe is to be used to transmit blast furnace gas in blast furnace gas dispatch path
The passage for the low-temp low-pressure purified gas being transformed into respectively after dedusting and energy transfer output.
Further, the blast furnace gas dispatch path includes blast furnace gas dust remover, the blast furnace coal being linked in sequence
Gas electric generating apparatus and the purified gas output channel as the low-pressure gas Transfer pipe.
Further, the gas dust-removing device using mainly solid particle is carried out by filter element physics intercept from
And the filter of dedusting is realized, the filter has the blowback that purge gas deashing can be periodically carried out to its filter element
Device.
Further, the filter is a kind of bag type filter using filter bag as its filter element；The filter
The bag body of bag includes the ventilative supporter being made up of glass-fiber woven fabrics and is attached in ventilative supporting body surface to be used as the mistake
The eptfe film of filter membrane.
Further, the ash discharge output end of the gas dust-removing device is connected by ash-valve with ash silo, is set in ash silo
There is row pressure filter, the row pressure mouth of the row pressure filter is connected with the low-pressure gas Transfer pipe；To the filter element
When carrying out purge gas deashing, the ash discharge output end passes sequentially through ash-valve, ash silo and row pressure filter and low-pressure gas passes
Send channel conductive.
Further, the back-blowing device is doubled as when carrying out purge gas deashing by being vented with the release from release
The reverse path for being vented the exhaust pathway of output channel inflow gas dust arrester carries out the pressurising dress of pressurising to the pressure box
Put.
Further, the purge gas input of the back-blowing device passes through blowback control valve and the blast furnace gas dispatch
Before being located at the low-pressure gas Transfer pipe in path, for transmitting also without the HTHP clean coal of energy transfer output
The HTHP purified gas Transfer pipe connection of gas.
Further, it is also associated with flowing between the purge gas input and the HTHP purified gas Transfer pipe
Amount control device.
The blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present invention, due to treating gas dust-removing device
Dedusting gas input, dedusting gas output end are vented output channel, blast furnace gas dispatch road with the release of pressure box respectively
Low-pressure gas Transfer pipe connection in footpath, so as to ingenious using between release exhaust output channel and low-pressure gas Transfer pipe
Originally existing pressure differential is flowed to drive the release of pressure box exhaust to be vented output channel from release by gas dust-removing device
Enter low-pressure gas Transfer pipe, reduce and even eliminate to drive the release of pressure box to be vented at by gas dust-removing device
The external energy supply managed and expended, the cost for being purified and being reclaimed so as to the release exhaust reduced to pressure box；Pass through
Release exhaust after gas dust-removing device processing is directly entered existing low-pressure gas Transfer pipe in blast furnace gas dispatch path,
Reclaimed or handled so as to be able to release exhaust being incorporated in blast furnace gas dispatch path, further simplify to pressure box
The equipment and flow that release exhaust is purified and reclaimed.Therefore, said system of the invention can be by simple, effective, low
The mode of cost realizes purification and recovery to release exhaust.
At present, blast furnace gas dispatch path generally includes blast furnace gas dust remover, the Power Generation by BF Gas being linked in sequence
Device and purified gas output channel, wherein, Power Generation by BF Gas device is utilized after blast furnace gas dust remover dust separation
HTHP blast furnace gas acting generated electricity, be then discharged out the purified gas of low-temp low-pressure, these purified gas pass through clean coal again
Gas output channel is exported to storage or using facility.For above-mentioned blast furnace gas dispatch path, the low-pressure gas is transmitted logical
When road selection is the purified gas output channel, it can be ensured that release is vented between output channel and low-pressure gas Transfer pipe and produced
Raw suitable pressure differential.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or the practice by the present invention
Solve.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for aiding in the understanding of the present invention, content provided in accompanying drawing and its
Explanation relevant in the present invention can be used for explaining the present invention, but not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of a kind of showing for blast furnace roof feeding pressure box release running status of exhaust gas purification recovery system of the invention
It is intended to.
Fig. 2 is the schematic diagram of system shown in Figure 1 another kind running status.
Embodiment
Clear, complete explanation is carried out to the present invention below in conjunction with the accompanying drawings.Those of ordinary skill in the art are based on these
The present invention can be realized in the case of explanation.Before with reference to accompanying drawing, the present invention will be described, it is necessary to it is emphasized that：
Technical scheme and technical characteristic in the present invention provided in each several part including the description below, do not rushing
In the case of prominent, these technical schemes and technical characteristic can be mutually combined.
In addition, the embodiments of the invention being related in the description below are generally only the embodiment of a branch of the invention, and
The embodiment being not all of.Therefore, creativeness is not being made based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
On term in the present invention and unit.Term in description and claims of this specification and relevant part
" comprising ", " having " and their any deformation, it is intended that cover non-exclusive include.Term " low temperature ", " low pressure ",
Relative height under linguistic context residing for " height " and " low " expression in " high temperature " and " high pressure ", and need to combine in the technical scheme of place
Relevant other technical characteristic/technological means/technical terms understand.Such as：" low pressure " in " low-pressure gas Transfer pipe ",
It is the low pressure in relative release exhaust output channel for pressure, its pressure differential being vented with release between output channel is used to drive
The release exhaust of dynamic pressure box flows into low-pressure gas Transfer pipe from release exhaust output channel by gas dust-removing device；Again
As " HTHP " in " HTHP purified gas Transfer pipe " be temperature in relatively low pressure gas delivery channels, pressure and
The HTHP of speech, it is the temperature and pressure that the purified gas also exported without energy transfer is reached.
Fig. 1 is a kind of schematic diagram of blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present invention.In Fig. 1
Not illustrate only the structure of blast furnace roof feeding pressure box release exhaust gas purification recovery system, further it is shown that blast furnace 111 with it is airtight
Position relationship between case 121.
As shown in figure 1, being provided with pressure box 121 at the furnace roof of blast furnace 111, it is to deliver smelting material to blast furnace 111 that it, which is acted on,
(i.e. feeding).The carrying out practically process of pressure box 121 is：First material is placed in the pressure box 121, is then shut off the pressure box
121 and to its inflation so that reach inside it with pressure balance in the body of heater of blast furnace 111, then open sending for pressure box bottom again
Material output channel material is discharged into body of heater, after the completion of close feeding output channel and open pressure box 121 release exhaust it is defeated
Going out passage makes pressure box be vented release, to load material to pressure box again.Therefore, in a feeding cycle, pressure box
121 can undergo charging-inflation-discharge-release Four processes；Wherein, it can discharge and unload in stress-relief process pressure box 121
Pressure gas, the present invention are the purification-recovery system to release exhaust.
As shown in figure 1, a kind of blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present invention, including gas
Dust arrester 122, the release exhaust for treating dedusting gas input and the pressure box 121 of the gas dust-removing device 122 export
Passage connects, the gas output end of dedusting of gas dust-removing device 122 with and the blast furnace gas dispatch road that is connected of the body of heater of blast furnace 111
Low-pressure gas Transfer pipe connection in footpath, wherein, have between release exhaust output channel and low-pressure gas Transfer pipe and use
Low pressure is flowed into by gas dust-removing device 122 from release exhaust output channel in driving the release exhaust of the pressure box 121
The pressure differential of gas delivery channels.
Above-mentioned " blast furnace gas dispatch path " refers to blast furnace gas from the whole transmission road after the discharge of the body of heater of blast furnace 111
Footpath.At present, blast furnace gas early existing ripe processing scheme, but in general can all carry out dust separation, sensible heat utilization and enter
One step recycles.In this process, progressively it is changed into low pressure gas from the HTHP raw coke oven gas of the body of heater of blast furnace 111 discharge
Body, and eventually enter into downstream links under the drive of the driving equipments such as blower fan.Therefore, in blast furnace gas dispatch path, necessarily deposit
In the low-pressure gas Transfer pipe for conveying low-pressure gas.
Due to by gas dust-removing device 122 treat dedusting gas input, dedusting gas output end respectively with pressure box
121 release is vented the low-pressure gas Transfer pipe connection in output channel, blast furnace gas dispatch path, so as to which ingenious utilize is unloaded
Between pressure gas output channel and low-pressure gas Transfer pipe originally existing pressure differential come drive the release of pressure box 121 be vented
Be vented output channel by gas dust-removing device 122 from release to flow into low-pressure gas Transfer pipe, reduce even eliminate for
The external energy supply that the release exhaust of driving pressure box 121 is handled to expend by gas dust-removing device 122, so as to drop
The cost that the low release exhaust to pressure box 121 is purified and reclaimed；Release after being handled by gas dust-removing device 122
Exhaust is directly entered existing low-pressure gas Transfer pipe in blast furnace gas dispatch path, so as to be able to release exhaust being incorporated to height
Producer gas dispatch is reclaimed or handled in path, be further simplify the exhaust of the release to pressure box 121 and is purified and returned
The equipment and flow of receipts.Therefore, blast furnace roof feeding pressure box release exhaust gas purification recovery system of the invention can pass through letter
Mode single, effectively, inexpensive realizes purification and recovery to release exhaust.
Early stage during the release of pressure box 121, because the pressure in pressure box 121 is higher, therefore, release exhaust output
Pressure differential between passage and low-pressure gas Transfer pipe is larger；And with the continuous release of pressure in pressure box 121, unload pressure
Pressure differential between gas output channel and low-pressure gas Transfer pipe reduces.In order to avoid the rate of pressure release of pressure box 121
A series of problems (the problems such as influence such as to gas dust-removing device 122, noise) caused by too fast, as shown in figure 1, above-mentioned height
Stove furnace roof feeding pressure box release exhaust gas purification recovery system is also for realizing that the release exhaust is logical from release exhaust output
Road is flowed on the release exhaust dispatch path of the process of low-pressure gas Transfer pipe by gas dust-removing device 122 and is provided with least
The flow regulator 124 of metering function from the early stage during the release of pressure box 121.
Due to the flow regulator 124 at least from the early stage during the release of pressure box 121 metering function, can prevent
When the pressure differential that release is vented between output channel and low-pressure gas Transfer pipe is larger, the pressure of pressure box 121 discharged
It hurry up；With the continuous release of pressure in pressure box 121, the flow regulator 124 can be gradually reduced metering function, so as to subtract
The small resistance to release exhaust.
The flow regulator 124 can realize current limliting using existing flow control valve and by controller aperture
With the effect of regulation resistance.Also, the flow regulator 124, which should be typically arranged on the release exhaust dispatch path, to be located at
Between gas dust-removing device 122 and low-pressure gas Transfer pipe.
Because the blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present invention make use of release exhaust output
Originally existing pressure differential is vented to drive the release of pressure box 121 to be vented from release between passage and low-pressure gas Transfer pipe
Output channel flows into low-pressure gas Transfer pipe by gas dust-removing device 122, therefore, for realizing the release exhaust
Output channel is vented from release, and dispatch is vented by the release of the process of the inflow low-pressure gas Transfer pipe of gas dust-removing device 122
On path, blower fan can be not provided with or be provided with blower fan that the later stage only during the release of pressure box 121 acts (in figure not
Show).
If being not provided with blower fan on the release exhaust dispatch path, biography of the release exhaust on release exhaust dispatch path
Send completely without blower fan to promote, both reduce energy expenditure, add the compactness of system again；If the release exhaust row
The blower fan for being provided with that the later stage only during the release of pressure box 121 acts on path is sent, then can utilize the blower fan in gas
Later stage during the close release of case 121 keeps the steady operation of gas dust-removing device 122 as supplement driving force.
Certainly, if being provided with blower fan on release exhaust dispatch path, preferably the fan parallel-connection is filled in dedusting
Put between 122 and low-pressure gas Transfer pipe, and release exhaust institute between the passage of parallel connection is controlled by corresponding valve
The path of selection.So, in the case of blower fan is not started, release exhaust can flow directly into low-pressure gas without the blower fan
Transfer pipe, so as to reduce blower fan caused resistance dynamic to release exhaust stream.
In the present invention, the low-pressure gas Transfer pipe is preferably used to transmit in blast furnace gas dispatch path by blast furnace coal
The passage for the low-temp low-pressure purified gas that qi leel is not transformed into after dust separation and energy transfer output.For example, such as Fig. 1 institutes
Show, the blast furnace gas dispatch path includes blast furnace gas dust remover 112, the Power Generation by BF Gas device being linked in sequence
114 and purified gas output channel 115, then the low-pressure gas Transfer pipe is the purified gas output channel 115.
It is this above the blast furnace gas discharged from the body of heater of blast furnace 111 is first passed through into blast furnace gas dust remover 112 to be removed
Dirt purification, after carrying out sensible heat utilization by Power Generation by BF Gas device 114 again, then obtained low-temp low-pressure purified gas is led to again
Cross purified gas output channel 115 to export to the processing mode of downstream links, be a kind of conventional processing mode of blast furnace gas.It is right
This, is purified gas output channel 115 by low-pressure gas Transfer pipe selection, then can just be in purified gas output channel
Enough pressure differentials are formed between 115 and release exhaust output channel.
In the present invention, the gas dust-removing device 122 is preferably using mainly by filter element to solid particle progress thing
Reason is intercepted so as to realize the filter of dedusting (this kind of filter typically has higher efficiency of dust collection), also, the filtering
Utensil has the back-blowing device that purge gas deashing can be periodically carried out to its filter element.
In the present invention, the ash discharge output end of the gas dust-removing device 122 (is not shown also by ash-valve and ash silo in figure
Go out) connect, row pressure filter (not shown), row pressure mouth and the purified gas of the row pressure filter are provided with ash silo
Output channel 115 connects, and to the filter element carry out purge gas deashing when, the ash discharge output end passes sequentially through ash discharge
Valve, ash silo and row pressure filter and purified gas output channel 115 turn on.So, blowback effect can either be ensured, and by blowback
Gas promotes the ash discharge of gas dust-removing device 122, additionally it is possible to it is defeated that purge gas is passed sequentially through into ash-valve, ash silo and row pressure filter
Purified gas output channel 115 is delivered to, realizes the recovery of purge gas.
Above-mentioned filter is used based on the gas dust-removing device 122, the back-blowing device of the filter can also entered
As by being vented output channel inflow gas dust arrester 122 from release with the release exhaust during row purge gas deashing
The reverse path of exhaust pathway carries out the pressurizing device of pressurising to the pressure box 121.So, when the back-blowing device doubles as filling
During pressure device, purge gas will be discharged and flowed into from filter after purge gas deashing is carried out to the filter element of filter
Pressure box 121 carries out pressurising (pressure for utilizing purge gas) to the pressure box 121, saves pressurized gas.
In addition, the purge gas input of the back-blowing device also passes through blowback control valve and the blast furnace gas dispatch road
Before being located at the low-pressure gas Transfer pipe in footpath, for transmitting also without the HTHP purified gas of energy transfer output
The connection of HTHP purified gas Transfer pipe, so as to by the use of the HTHP purified gas be used as purge gas.Due to blast furnace coal
Before being located at the low-pressure gas Transfer pipe in gas dispatch path, for transmitting also without the high temperature height of energy transfer output
Pressure purified gas is inherently clean, the gas that temperature is higher and pressure is larger, and energy-conservation, energy can be played as purge gas
It is enough gas dust-removing device 122 to be heated and avoided (or reduction) introduce other purge gas so as to cause gas in system
The effect for the problems such as complicated component, coal gas are diluted.It is emphasized that because HTHP purified gas is as purge gas week
The filter element that phase property is acted in gas dust-removing device 122, heating and thermal insulation can be carried out to the filter element, to a certain degree
On prevent from causing to form the fluid contaminants such as tar on filter element because the physical state of release exhaust is unstable, ensure filtering
Effect.
In addition, flow control dress is also associated between the purge gas input and HTHP purified gas Transfer pipe
117 are put, to be controlled to the flow of blowback source of the gas.
Embodiment
The gas dust-removing device 122 of the blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present embodiment uses
The filter element of filter used a kind of filter bag, the bag body of the filter bag includes the ventilative support being made up of glass-fiber woven fabrics
Body and eptfe film on ventilative supporter inner surface as the filter membrane is attached to, the e-PTFE
The pore structure of vinyl film has and will controlled by the dust content filtered in gas of the filter in 5mg/Nm3Following
Strainability.
More specifically, the filter bag employ the brand provided by present invention applicant for " Rui Kelin " or
The filter bag commodity of " reachclean ", the bag body of the filter bag are ventilative supporter and the attachment for including being made up of glass-fiber woven fabrics
Eptfe film on ventilative supporter inner surface, wherein, the pore structure of the eptfe film
It will can be controlled by the dust content filtered in gas of filter in 1mg/Nm3Hereinafter, therefore there is very high filtering
Efficiency.
It may be noted that eptfe film be it is a kind of by stretcher strain (i.e. the implication of " varicosity ") so as to gathering
The film of fibrous blind hole is formed on tetrafluoroethene material.It is swollen by controlling in eptfe film manufacturing process
The micropore quantity of body PolytetrafluoroethylFilm Film can make eptfe film reach corresponding filtering accuracy.For example,
Micropore quantity used in the above-mentioned filter bag preferably used on eptfe film on every square millimeter can surpass
Cross 10,000,000, therefore most of fine brown iron oxide can be intercepted on the surface of eptfe film, together
When, there is extremely strong hydrophobicity again due to eptfe film and do not glue the characteristics of grey, therefore, by e-PTFE second
The fine brown iron oxide that alkene film is intercepted can be during the reverse gas cleaning of filter easily from expanded PTFE
Peeled off on film.
In the present embodiment, concrete structure and operation principle and the Shen of the present invention of the gas dust-removing device 122 and its filter bag
The inward flow filtration-type exhaust dust device with bag for asking someone to provide in Publication No. CN102698529A Chinese patent literature is similar, therefore no longer
Repeat.
As shown in figure 1, the release for treating dedusting gas input and pressure box 121 of the gas dust-removing device 122 is vented
Output channel connects, the gas output end of dedusting of gas dust-removing device 122 with and the blast furnace gas dispatch that is connected of blast furnace
Purified gas output channel 115 in path connects.
Wherein, the blast furnace gas dispatch path includes blast furnace gas dust remover 112, the blast furnace gas being linked in sequence
TRT 114 and the purified gas output channel 115.
Described blast furnace gas dust remover 112 employs and the identical structure of gas dust-removing device 122 and filter element.
In addition, gravitational precipitator (not shown) is additionally provided between blast furnace 111 and the blast furnace gas dust remover 112, so as to
Pre- dust removal process is carried out to the blast furnace gas that will enter blast furnace gas dust remover 112.
Described Power Generation by BF Gas device 114 is specially turbine generators, and it is driven by HTHP purified gas
Generate electricity, be then discharged out the low-temp low-pressure purified gas being transformed into after energy transfer output, low-temp low-pressure purified gas is defeated by purified gas
Go out pipeline 115 and be delivered to downstream links.
In the present embodiment, exported from blast furnace gas dust remover 112 and flow to the high temperature of Power Generation by BF Gas device 114
The pressure of high pressure purified gas is 110-250kPa, and temperature is 110-250 DEG C；And Power Generation by BF Gas device 114 escapes and enter
The pressure of the low-temp low-pressure purified gas of purified gas output channel 115 is about 20kPa, and temperature is below 50 DEG C.
In the present embodiment, the purge gas input of gas dust-removing device 122 (is not shown by blowback control valve in figure
Go out) and blast furnace gas dispatch path in high temperature between blast furnace gas dust remover 112 and Power Generation by BF Gas device 114
High pressure purified gas Transfer pipe connects.
In addition, according to Fig. 1, be additionally provided with Fig. 1 on corresponding pipeline valve 123, valve 116, valve 113 with
And flow regulator 124 and volume control device 117.Wherein, flow regulator 124 and volume control device 117 are adopted
With existing flow control valve.
As shown in figure 1, when release is exhausted in pressure box 121, (valve 123 and valve 113 are opened, and valve 116 closes
Close), pressure box 121 discharge release exhaust (pressure 120-250kPa, 110-250 DEG C of temperature) release exhaust output channel with
In the presence of pressure differential between purified gas output channel 115, from release be vented output channel by gas dust-removing device 122 and
Purified gas output channel 115 is flowed into, during pressure box release, the passage in flow regulator 124 does not fully open first, from
And release is vented and carries out current limliting, prevent that the rate of pressure release of pressure box 121 is too fast, and after the release for a period of time of pressure box 121,
The aperture of passage in flow regulator 124 is opened completely, reduces the resistance to release exhaust.Pressure box 121 is vented release
Time control in the 20-60 seconds.During this, gas dust-removing device 122 filters to release exhaust.
As shown in Fig. 2 during 121 pressurising of pressure box (valve 123 is closed, and valve 113 is half-open, and valve 116 is opened), while instead
Control valve unlatching is blown, is exported from blast furnace gas dust remover 112 and flows to the HTHP clean coal of Power Generation by BF Gas device 114
In gas (pressure 110-250kPa, temperature be 110-250 DEG C) part be introduced into gas dust-removing device 122 the gas of dedusting it is defeated
Go out end, and enter gas dust-removing device 122 as purge gas and purge gas deashing is carried out to filter element therein, meanwhile,
The ash-valve of gas dust-removing device 122 is opened, so that the dust gathered in gas dust-removing device 122 discharges, due to gas
The ash discharge output end of body dust arrester 122 is connected by ash-valve with ash silo, and row pressure filter, the row pressure are provided with ash silo
The row pressure mouth of filter is connected with the purified gas output channel 115, and to the filter element carry out purge gas deashing when,
The ash discharge output end passes sequentially through ash-valve, ash silo and row pressure filter and purified gas output channel 115 turns on, therefore, with
Dust enters a part of purge gas of ash silo again by entering purified gas output channel 115 after the filtering of row pressure filter；In addition,
The purge gas of HTHP after some purge gas deashing treats dedusting gas further through gas dust-removing device 122
Input flows to pressure box 121 so as to carry out pressurising to pressure box 121.
It is pointed out that in general, frequency of the frequency of pressurising than carrying out purge gas deashing is carried out to pressure box 121
Rate is higher, and therefore, pressure box 121 should also connect other source of inflation gas (prior art), so as in gas dust-removing device 122 not
When starting purge gas deashing, it still is able to ensure the inflation of pressure box 121.
Thus, the blast furnace roof feeding pressure box release exhaust gas purification recovery system of the present embodiment realizes and blast furnace gas
Combination between dispatch path, form and solve blast furnace roof feeding pressure box release exhaust dust pollution and noise pollution
Ideal solution.
The relevant content of the present invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these
The present invention can be realized under condition.Based on the above of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
Claims (10)
1. blast furnace roof feeding pressure box release exhaust gas purification recovery system, it is characterised in that：Including gas dust-removing device, the gas
Body dust arrester treats that the release exhaust output channel that dedusting gas input is used for the pressure box is connected, dedusting dress
Low-pressure gas transmission in the blast furnace gas dispatch path that the gas output end of dedusting put is used to be connected with blast furnace is led to
Road connects, wherein, have between release exhaust output channel and low-pressure gas Transfer pipe and be used to drive unloading for the pressure box
Pressure gas flows into the pressure differential of low-pressure gas Transfer pipe from release exhaust output channel by gas dust-removing device.
2. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 1, it is characterised in that：With
Mistake of the output channel by gas dust-removing device inflow low-pressure gas Transfer pipe is vented in realizing that the release is vented from release
On the release exhaust dispatch path of journey, the Flow-rate adjustment dress of at least metering function from the early stage during pressure box release is provided with
Put.
3. the blast furnace roof feeding pressure box release exhaust gas purification recovery system described in claim 1, it is characterised in that：For
Realize that the release exhaust is vented process of the output channel by gas dust-removing device inflow low-pressure gas Transfer pipe from release
Release exhaust dispatch path on, be not provided with blower fan or be provided with the wind that the later stage only during pressure box release acts
Machine.
4. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 1, it is characterised in that：It is described
Low-pressure gas Transfer pipe is to be used to transmit in blast furnace gas dispatch path blast furnace gas is passed through into dedusting and energy transfer respectively
The passage for the low-temp low-pressure purified gas being transformed into after output.
5. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 4, it is characterised in that：It is described
Blast furnace gas dust remover that blast furnace gas dispatch path includes being linked in sequence, Power Generation by BF Gas device and described in being used as
The purified gas output channel of low-pressure gas Transfer pipe.
6. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 1, it is characterised in that：It is described
Gas dust-removing device uses mainly carries out physics interception so as to realize the filtering of dedusting by filter element to solid particle
Device, the filter have the back-blowing device that purge gas deashing can be periodically carried out to its filter element.
7. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 6, it is characterised in that：It is described
The ash discharge output end of gas dust-removing device is connected by ash-valve with ash silo, and row pressure filter, the row pressure are provided with ash silo
The row pressure mouth of filter is connected with the low-pressure gas Transfer pipe；When carrying out purge gas deashing to the filter element, institute
State ash discharge output end and pass sequentially through ash-valve, ash silo and row pressure filter and turned on low-pressure gas Transfer pipe.
8. the blast furnace roof feeding pressure box release exhaust gas purification recovery system described in claim 6, it is characterised in that：It is described anti-
Blowing apparatus doubles as removing by being vented output channel inflow gas from release with release exhaust when carrying out purge gas deashing
The reverse path of the exhaust pathway of dirt device carries out the pressurizing device of pressurising to the pressure box.
9. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 6, it is characterised in that：It is described
The purge gas input of back-blowing device in blowback control valve and the blast furnace gas dispatch path by being located at the low pressure gas
Passed before body Transfer pipe, for transmitting the HTHP purified gas of the HTHP purified gas also without energy transfer output
Passage is sent to connect.
10. blast furnace roof feeding pressure box release exhaust gas purification recovery system as claimed in claim 9, it is characterised in that：Institute
State and be connected with volume control device between purge gas input and HTHP purified gas Transfer pipe.
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|---|---|---|---|
| CN201710990746.5A CN107541576A (en) | 2017-10-23 | 2017-10-23 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710990746.5A CN107541576A (en) | 2017-10-23 | 2017-10-23 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
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| CN201710990746.5A Pending CN107541576A (en) | 2017-10-23 | 2017-10-23 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112375861A (en) * | 2020-10-30 | 2021-02-19 | 包头市泽润机械设备有限责任公司 | Blast furnace pressure-equalizing bleeding gas recovery equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140562A (en) * | 2011-03-02 | 2011-08-03 | 柳州钢铁股份有限公司 | Dry deduster for blast furnace gas |
| CN102218248A (en) * | 2011-06-30 | 2011-10-19 | 首钢总公司 | Coal gas dust collector |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102888477A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Top even pressure gas recovery device and technology for blast furnace and technology |
| CN103213844A (en) * | 2013-03-29 | 2013-07-24 | 成都瑞柯林工程技术有限公司 | Ash conveying and discharging method and equipment for blast furnace gas dedusting device |
| JP2017008386A (en) * | 2015-06-24 | 2017-01-12 | 株式会社Ihi | Blast furnace and method for operating blast furnace |
| CN207596883U (en) * | 2017-10-23 | 2018-07-10 | 成都瑞柯林工程技术有限公司 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
-
2017
- 2017-10-23 CN CN201710990746.5A patent/CN107541576A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140562A (en) * | 2011-03-02 | 2011-08-03 | 柳州钢铁股份有限公司 | Dry deduster for blast furnace gas |
| CN102218248A (en) * | 2011-06-30 | 2011-10-19 | 首钢总公司 | Coal gas dust collector |
| CN102337364A (en) * | 2011-07-20 | 2012-02-01 | 中冶南方工程技术有限公司 | Device for recovering coal gas in equalizing and relieving process of furnace top of blast furnace |
| CN102888477A (en) * | 2012-09-28 | 2013-01-23 | 中冶南方工程技术有限公司 | Top even pressure gas recovery device and technology for blast furnace and technology |
| CN103213844A (en) * | 2013-03-29 | 2013-07-24 | 成都瑞柯林工程技术有限公司 | Ash conveying and discharging method and equipment for blast furnace gas dedusting device |
| JP2017008386A (en) * | 2015-06-24 | 2017-01-12 | 株式会社Ihi | Blast furnace and method for operating blast furnace |
| CN207596883U (en) * | 2017-10-23 | 2018-07-10 | 成都瑞柯林工程技术有限公司 | Blast furnace roof feeding pressure box release exhaust gas purification recovery system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112375861A (en) * | 2020-10-30 | 2021-02-19 | 包头市泽润机械设备有限责任公司 | Blast furnace pressure-equalizing bleeding gas recovery equipment |
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