CN107603674A - A kind of broken coal gasification improves the device and handling process of the ash lock cycle of operation - Google Patents
A kind of broken coal gasification improves the device and handling process of the ash lock cycle of operation Download PDFInfo
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- CN107603674A CN107603674A CN201711044375.8A CN201711044375A CN107603674A CN 107603674 A CN107603674 A CN 107603674A CN 201711044375 A CN201711044375 A CN 201711044375A CN 107603674 A CN107603674 A CN 107603674A
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- Prior art keywords
- ash
- valve
- carbon dioxide
- lock
- pipeline
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- 238000002309 gasification Methods 0.000 title claims abstract description 64
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 116
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 57
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 56
- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 31
- 229960004424 carbon dioxide Drugs 0.000 claims description 53
- 239000007789 gas Substances 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 2
- 238000007664 blowing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Gasify the invention discloses a kind of broken coal and improve the device and handling process of the ash lock cycle of operation：Gasification furnace grate ash passage ring casing and ash connect ash lock stripper plant between locking valve ash passage, ash lock stripper plant air inlet connection surge tank, buffer tank inlet connects carbon dioxide pipeline and nitrogen pipeline respectively, carbon dioxide pipeline air inlet is connected to carbon dioxide house steward, and nitrogen pipeline air inlet is connected to nitrogen header pipe；Regulating valve one, switch valve one, pressure controller, regulating valve two, flow controller and switch valve two, regulating valve one and pressure controller interlocked control, regulating valve two and flow controller interlocked control are set gradually on carbon dioxide pipeline；Switch valve three is set on nitrogen pipeline.The present invention is while meeting that the gasification of fixed bed broken coal requires, by grate and ash lock upper valve ash passages, adding high-pressure carbon dioxide and ash lock being stripped, reduces the temperature and ash lock running temperature of gasification furnace ash discharge, improves grey Lock valve service life.
Description
Technical field
It is to be related to a kind of broken coal gasification to carry in particular the present invention relates to the cycle of operation of crushed coal pressure gasifying ash lock
The device and handling process of the high ash lock cycle of operation.
Background technology
In broken coal gasification running, ash lock is by caused lime-ash in gasification furnace, is discharged into by the upper lower valve of ash lock defeated
Ash system.The sealing of grey locking-valve is generally valve head and valve seat seals firmly：Valve head is alloy welding deposit, and valve seat is diamondite ring.
The sealing of grey Lock valve is to directly affect the cycle of operation of gasification furnace, and wherein ash locks valve in the process of running
Often easily leakage, causes ash to lock valve and fits badly, and can not carry out normal ash lock isolation ash discharge, cause gasification furnace to stop when serious
Car.Grey locking-valve overheating operation (>470 DEG C), ferrous contaminants etc., which are all easily caused ash and lock valve, in abrasion and as-fired coal bursts apart
And leak.It is universal shorter to lock valve service life for ash at present, typically at 2~3 months.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided a kind of broken coal gasification improves ash lock operation week
The device and handling process of phase, by being locked into horizontal high voltage carbon dioxide stripping drop to ash during fixed bed crushed coal pressure gasifying
Temperature improves the cycle of operation.
The purpose of the present invention can be achieved through the following technical solutions.
A kind of broken coal gasification of the present invention improves the device of the ash lock cycle of operation, including gasification furnace, the top of gasification furnace
Coal lock is provided with, bottom is provided with grey lock, and the gasification furnace grate ash passage ring casing and ash are connected between locking valve ash passage
Ash lock stripper plant, the air inlet of the ash lock stripper plant are connected with surge tank, and the buffer tank inlet is connected to
Carbon dioxide pipeline and nitrogen pipeline, the air inlet of the carbon dioxide pipeline are connected to carbon dioxide house steward, the nitrogen tube
The air inlet of line is connected to nitrogen header pipe；On the carbon dioxide pipeline along gas conveying direction be disposed with regulating valve one,
Switch valve one, pressure controller, regulating valve two, flow controller and switch valve two, the regulating valve one join with pressure controller
Lock control, the regulating valve two and flow controller interlocked control；Switch valve three is provided with the nitrogen pipeline.
The ash lock stripper plant is made up of gas distributor, uniform nozzle and connecting pipeline.
The purpose of the present invention can be also achieved through the following technical solutions.
A kind of broken coal gasification of the present invention improves the handling process of the ash lock cycle of operation, comprises the following steps：
Step 1, after carbon dioxide manifold pressure is stable, regulating valve one and switch valve one are opened, passes through pressure controller control
The aperture of regulating valve one processed, make carbon dioxide line pressure higher 1.0~1.5MPa than gasification furnace furnace pressure；
Step 2, regulating valve two and switch valve two are opened, observe the change of carbon dioxide pipeline upstream amount controller, gradually
The valve position of regulating valve two is adjusted, keeps the flow of ash lock stripper plant in 3000~5000NM3/ h, concern gasification outlet of still coal gas
The change of component and ash lock discharge the running situation of lime-ash, adjust the steam oxygen ratio of gasification furnace in time；
Step 3, after carbon dioxide line pressure fluctuates increasing or compressor jumps car, closing switch valve two, open simultaneously
Switch valve three, supplying nitrogen in stripper plant is locked to ash, keep gasifier operation stable.
Compared with prior art, beneficial effect caused by technical scheme is：
(1) present invention retains original gasification flow for crushed coal pressure gasifying device, particularly fixed bed pressured gasification stove
On the basis of, gasification furnace grate ash passage ring casing and ash are connected with ash lock stripper plant between locking valve ash passage, using gas
Distributor and uniform nozzle composition, make CO2 gases be uniformly distributed in grey passage annular space, strengthen Srteam Stripping effect, pass through valve control
The pressure and flow of gas in system ash lock stripper plant, and the purging of ash lock stripper plant；
(2) present invention does not change original gasification furnace technological process, using Compressed CO_2 as stripping gas, locks stripping dress through ash
After putting cooling, into gasification furnace in participate in gasification reaction, can by slag from gasifying furnace temperature reduce by more than 100 DEG C, reduce ash lock
Valve running temperature, extending grey locking-valve service life, reduce gasification furnace stop frequency and repair and maintenance time, economic benefit is obvious,
Stripping gas can be used as gasifying agent to participate in gasification furnace reaction simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Reference:1 gasification furnace；2 coals are locked；3 ash locks；The carbon dioxide pipeline of 4 surge tank 5；
6 nitrogen pipelines；7 regulating valves one；8 regulating valves two；9 switch valves one；10 switch valves two；
11 switch valves three；12 pressure controllers；13 flow controllers；14 ash lock stripper plants.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of broken coal gasification of the present invention improves the device of the ash lock cycle of operation, including gasification furnace 1, it is described
The top of gasification furnace 1 is provided with coal lock 2, and bottom is provided with ash lock 3.The gasification furnace 1 is using the broken coal pressurization continuous gas of counter current contacting
Change dry ash extraction technique, coal is periodically added in gasification furnace 1 by coal lock 2, and gasifying agent enters gasification furnace 1, gasifying agent by fire grate
With the coal counter current contacting from coal lock 2, raw gas, coal and caused lime-ash after gasifying agent reaction are generated, by fire grate scraper
Rotation is continually drained ash lock 3, is periodically purged out after ash locks 3 pressure releases.
Ash lock stripper plant 14, institute are connected between the grate ash passage ring casing of gasification furnace 1 and ash 3 upper valve ash passages of lock
State ash lock stripper plant 14 to be made up of gas distributor, uniform nozzle and relevant connection pipeline, make carbon dioxide in ash
It is uniformly distributed in passage annular space, strengthens Srteam Stripping effect.
The air inlet of the ash lock stripper plant 14 is connected with surge tank 4, and the air inlet of surge tank 4 is connected to two
Carbonoxide pipeline 5 and nitrogen pipeline 6, the air inlet of the carbon dioxide pipeline 5 are connected to carbon dioxide house steward, the nitrogen tube
The air inlet of line 6 is connected to nitrogen header pipe.On the carbon dioxide pipeline 5 regulating valve one is disposed with along gas conveying direction
7th, switch valve 1, pressure controller 12, regulating valve 28, flow controller 13 and switch valve 2 10, the regulating valve 1 and pressure
The interlocked control of force controller 12, the regulating valve 28 and the interlocked control of flow controller 13, the regulating valve 28 are used for high pressure
The regulation of carbon dioxide flow.Switch valve 3 11 is provided with the nitrogen pipeline 6.
Broken coal gasification based on said apparatus improves the handling process of the ash lock cycle of operation, is meeting the gasification of fixed bed broken coal
It is required that while, by the grate ash passage ring casing of gasification furnace 1 and ash 3 upper valve ash passages of lock, adding high-pressure carbon dioxide pair
Ash lock 3 is stripped, and is reduced the temperature and ash 3 running temperatures of lock of the ash discharge of gasification furnace 1, is improved ash 3 valve service lives of lock, specifically
Comprise the following steps：
Step 1, after carbon dioxide manifold pressure is stable, regulating valve 1 and switch valve 1 are opened, high-pressure carbon dioxide enters
Enter in carbon dioxide pipeline 5, the aperture of valve 1 is controlled to adjust by pressure controller 12, makes the pressure ratio gas of carbon dioxide pipeline 5
Change the high 1.0~1.5MPa of the furnace pressure of stove 1；
Step 2, regulating valve 28 (1~2 valve position) is opened, while open switch valve 2 10, high-pressure carbon dioxide is through slow
Rush tank 4 to buffer in laggard ash charge lock stripper plant 14, the change of flow controller 13, is gradually adjusted on observation carbon dioxide pipeline 5
Section slowly opens the valve position of big regulating valve 28, keeps the flow of ash lock stripper plant 14 in 3000~5000NM3/ h, concern gasification
Stove 1 exports the change of gas composition and the running situation of the discharge lime-ash of ash lock 3, adjusts the steam oxygen ratio of gasification furnace 1 in time；
Step 3, after car is jumped in the pressure oscillation increasing of carbon dioxide pipeline 5 or compressor, closing switch valve 2 10, simultaneously
Switch valve 3 11 is opened, the high-pressure blowing nitrogen from nitrogen header pipe enters in ash charge lock stripper plant 14 through nitrogen pipeline 6, kept
Gasification furnace 1 is stable.
With gasifier operation pressure 4.0Mpa, exemplified by processing coal 34T/h：
Embodiment 1
Step 1, after carbon dioxide manifold pressure is stable, regulating valve 1 and switch valve 1 are opened, high-pressure carbon dioxide enters
Enter in carbon dioxide pipeline 5, the aperture of valve 1 is controlled to adjust by pressure controller 12, makes the pressure ratio gas of carbon dioxide pipeline 5
Change the high 1.0MPa of the furnace pressure of stove 1；
Step 2, regulating valve 28 (1 valve position) is opened, while open switch valve 2 10, the buffered tank of high-pressure carbon dioxide
In the laggard ash charge lock stripper plant 14 of 4 bufferings, the change of flow controller 13 on observation carbon dioxide pipeline 5, gradually regulation is slow
Slowly the valve position of big regulating valve 28 is opened, keeps the flow of ash lock stripper plant 14 in 3000NM3/ h, concern gasification furnace 1 export coal gas
The change of component and the running situation of the discharge lime-ash of ash lock 3, the steam oxygen ratio of gasification furnace 1 is adjusted in time；
Step 3, after car is jumped in the pressure oscillation increasing of carbon dioxide pipeline 5 or compressor, closing switch valve 2 10, simultaneously
Switch valve 3 11 is opened, the high-pressure blowing nitrogen from nitrogen header pipe enters in ash charge lock stripper plant 14 through nitrogen pipeline 6, kept
Gasification furnace 1 is stable.
After this method, slag from gasifying furnace temperature is reduced to 296 DEG C by 400 DEG C, reduces grey locking-valve running temperature 104
DEG C, grey locking-valve service life is effectively extended, reduces gasification furnace stop frequency and repair and maintenance time.
Embodiment 2
Step 1, after carbon dioxide manifold pressure is stable, regulating valve 1 and switch valve 1 are opened, high-pressure carbon dioxide enters
Enter in carbon dioxide pipeline 5, the aperture of valve 1 is controlled to adjust by pressure controller 12, makes the pressure ratio gas of carbon dioxide pipeline 5
Change the high 1.25MPa of the furnace pressure of stove 1；
Step 2, regulating valve 28 (1 valve position) is opened, while open switch valve 2 10, the buffered tank of high-pressure carbon dioxide
In the laggard ash charge lock stripper plant 14 of 4 bufferings, the change of flow controller 13 on observation carbon dioxide pipeline 5, gradually regulation is slow
Slowly the valve position of big regulating valve 28 is opened, keeps the flow of ash lock stripper plant 14 in 4000NM3/ h, concern gasification furnace 1 export coal gas
The change of component and the running situation of the discharge lime-ash of ash lock 3, the steam oxygen ratio of gasification furnace 1 is adjusted in time；
Step 3, after car is jumped in the pressure oscillation increasing of carbon dioxide pipeline 5 or compressor, closing switch valve 2 10, simultaneously
Switch valve 3 11 is opened, the high-pressure blowing nitrogen from nitrogen header pipe enters in ash charge lock stripper plant 14 through nitrogen pipeline 6, kept
Gasification furnace 1 is stable.
After this method, slag from gasifying furnace temperature is reduced to 276 DEG C by 400 DEG C, reduces grey locking-valve running temperature 123
DEG C, grey locking-valve service life is effectively extended, reduces gasification furnace stop frequency and repair and maintenance time.
Embodiment 3
Step 1, after carbon dioxide manifold pressure is stable, regulating valve 1 and switch valve 1 are opened, high-pressure carbon dioxide enters
Enter in carbon dioxide pipeline 5, the aperture of valve 1 is controlled to adjust by pressure controller 12, makes the pressure ratio gas of carbon dioxide pipeline 5
Change the high 1.5MPa of the furnace pressure of stove 1；
Step 2, regulating valve 28 (2 valve positions) is opened, while open switch valve 2 10, the buffered tank of high-pressure carbon dioxide
In the laggard ash charge lock stripper plant 14 of 4 bufferings, the change of flow controller 13 on observation carbon dioxide pipeline 5, gradually regulation is slow
Slowly the valve position of big regulating valve 28 is opened, keeps the flow of ash lock stripper plant 14 in 5000NM3/ h, concern gasification furnace 1 export coal gas
The change of component and the running situation of the discharge lime-ash of ash lock 3, the steam oxygen ratio of gasification furnace 1 is adjusted in time；
Step 3, after car is jumped in the pressure oscillation increasing of carbon dioxide pipeline 5 or compressor, closing switch valve 2 10, simultaneously
Switch valve 3 11 is opened, the high-pressure blowing nitrogen from nitrogen header pipe enters in ash charge lock stripper plant 14 through nitrogen pipeline 6, kept
Gasification furnace 1 is stable.
After this method, slag from gasifying furnace temperature is reduced to 260 DEG C by 400 DEG C, reduces grey locking-valve running temperature 140
DEG C, grey locking-valve service life is effectively extended, reduces gasification furnace stop frequency and repair and maintenance time.
Although the function and the course of work of the present invention are described above in conjunction with accompanying drawing, the invention is not limited in
Above-mentioned concrete function and the course of work, above-mentioned embodiment is only schematical, rather than restricted, ability
The those of ordinary skill in domain is not departing from present inventive concept and scope of the claimed protection situation under the enlightenment of the present invention
Under, many forms can also be made, these are belonged within the protection of the present invention.
Claims (3)
1. a kind of broken coal gasification improves the device of the ash lock cycle of operation, including gasification furnace (1), set at the top of the gasification furnace (1)
There is coal to lock (2), bottom is provided with ash lock (3), it is characterised in that on gasification furnace (1) the grate ash passage ring casing and ash lock (3)
Ash lock stripper plant (14) is connected between valve ash passage, the air inlet of the ash lock stripper plant (14) is connected with surge tank
(4), surge tank (4) air inlet is connected to carbon dioxide pipeline (5) and nitrogen pipeline (6), the carbon dioxide pipe
The air inlet of line (5) is connected to carbon dioxide house steward, and the air inlet of the nitrogen pipeline (6) is connected to nitrogen header pipe；Described two
On carbonoxide pipeline (5) regulating valve one (7), switch valve one (9), pressure controller are disposed with along gas conveying direction
(12), regulating valve two (8), flow controller (13) and switch valve two (10), the regulating valve one (7) and pressure controller (12)
Interlocked control, the regulating valve two (8) and flow controller (13) interlocked control；Switch is provided with the nitrogen pipeline (6)
Valve three (11).
2. broken coal gasification according to claim 1 improves the device of the ash lock cycle of operation, it is characterised in that the ash lock vapour
Device (14) is carried to be made up of gas distributor, uniform nozzle and connecting pipeline.
3. a kind of broken coal gasification based on the claims 1 and 2 improves the handling process of the ash lock cycle of operation, its feature exists
In comprising the following steps：
Step 1, after carbon dioxide manifold pressure is stable, regulating valve one (7) and switch valve one (9) are opened, passes through pressure controller
(12) aperture of valve one (7) is controlled to adjust, makes carbon dioxide pipeline (5) pressure ratio gasification furnace (1) high 1.0~1.5MPa of furnace pressure；
Step 2, regulating valve two (8) and switch valve two (10) are opened, observe flow controller (13) on carbon dioxide pipeline (5)
Change, gradually adjust regulating valve two (8) valve position, keep ash lock stripper plant (14) flow in 3000~5000NM3/ h,
The change of gasification furnace (1) outlet gas composition and the running situation of ash lock (3) discharge lime-ash are paid close attention to, adjusts gasification furnace (1) in time
Steam oxygen ratio；
Step 3, after car is jumped in carbon dioxide pipeline (5) pressure oscillation increasing or compressor, closing switch valve two (10), simultaneously
Switch valve three (11) is opened, the supplying nitrogen into ash lock stripper plant (14), keeps gasification furnace (1) stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044375.8A CN107603674A (en) | 2017-10-31 | 2017-10-31 | A kind of broken coal gasification improves the device and handling process of the ash lock cycle of operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044375.8A CN107603674A (en) | 2017-10-31 | 2017-10-31 | A kind of broken coal gasification improves the device and handling process of the ash lock cycle of operation |
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| Publication Number | Publication Date |
|---|---|
| CN107603674A true CN107603674A (en) | 2018-01-19 |
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ID=61083984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711044375.8A Pending CN107603674A (en) | 2017-10-31 | 2017-10-31 | A kind of broken coal gasification improves the device and handling process of the ash lock cycle of operation |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB589516A (en) * | 1944-03-23 | 1947-06-23 | Babcock & Wilcox Co | Improvements in process of and apparatus for the heat treatment of hydrocarbons and carbohydrates |
| CN101942343A (en) * | 2010-09-20 | 2011-01-12 | 中国科学院山西煤炭化学研究所 | Pressurized-gasification solid-state wet-type deslagging device for carbonaceous organic material and method |
| US20130019529A1 (en) * | 2010-03-23 | 2013-01-24 | Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. | Method and system for producing synthesis gas |
| CN105368498A (en) * | 2015-09-08 | 2016-03-02 | 袁峥嵘 | Method for preparing water gas through pressurization continuous gasification of static beds |
| CN106635168A (en) * | 2016-11-28 | 2017-05-10 | 伊犁出入境检验检疫局综合技术服务中心 | Method and system for preparing gas by fixed bed gasifier |
| CN207452035U (en) * | 2017-10-31 | 2018-06-05 | 天津渤化永利化工股份有限公司 | A kind of broken coal gasification improves the device of the ash lock cycle of operation |
-
2017
- 2017-10-31 CN CN201711044375.8A patent/CN107603674A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB589516A (en) * | 1944-03-23 | 1947-06-23 | Babcock & Wilcox Co | Improvements in process of and apparatus for the heat treatment of hydrocarbons and carbohydrates |
| US20130019529A1 (en) * | 2010-03-23 | 2013-01-24 | Wuhan Kaidi Engineering Technology Research Institute Co., Ltd. | Method and system for producing synthesis gas |
| CN101942343A (en) * | 2010-09-20 | 2011-01-12 | 中国科学院山西煤炭化学研究所 | Pressurized-gasification solid-state wet-type deslagging device for carbonaceous organic material and method |
| CN105368498A (en) * | 2015-09-08 | 2016-03-02 | 袁峥嵘 | Method for preparing water gas through pressurization continuous gasification of static beds |
| CN106635168A (en) * | 2016-11-28 | 2017-05-10 | 伊犁出入境检验检疫局综合技术服务中心 | Method and system for preparing gas by fixed bed gasifier |
| CN207452035U (en) * | 2017-10-31 | 2018-06-05 | 天津渤化永利化工股份有限公司 | A kind of broken coal gasification improves the device of the ash lock cycle of operation |
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Application publication date: 20180119 |