CN104726136B - A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process - Google Patents
A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process Download PDFInfo
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- CN104726136B CN104726136B CN201510152587.2A CN201510152587A CN104726136B CN 104726136 B CN104726136 B CN 104726136B CN 201510152587 A CN201510152587 A CN 201510152587A CN 104726136 B CN104726136 B CN 104726136B
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- release gas
- recovery system
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- 239000003245 coal Substances 0.000 title claims abstract description 131
- 238000011084 recovery Methods 0.000 title claims abstract description 49
- 238000002309 gasification Methods 0.000 title claims abstract description 17
- 238000010926 purge Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 134
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 68
- 229910052757 nitrogen Inorganic materials 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000002000 scavenging effect Effects 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 19
- 239000003345 natural gas Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/30—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1621—Compression of synthesis gas
Abstract
A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process, sets pressure release gas recovery system and purge gass recovery system, and using the method for classification recycling, processing step is：Step 1：Coal lock pressure release gas initially enters dedusting washing system, passes through the washing of gas liquor；Step 2：Pressure release gas is locked by the coal after step 1, the coal lock pressure release gas in the stage of pressure release in the early stage introduces pressure release gas recovery system, buffered through gas holder, and compressed unit depth is forced into after vapor pressure, and cooling unit is converted as rough coal pneumatic transmission project；Step 3：Pressure release gas is locked by coal after step 1, gas is locked in the coal of latter stage purge stages, introduces purge gass recovery system, buffered through gas holder, and after simply being compressed through compressor, delivers to project steam generator system, after burning purification, qualified discharge.
Description
Technical field
The invention belongs to technical field of coal chemical industry, particularly a kind of crushed coal pressurized-gasification furnace coal locks the recovery work of pressure release gas
Skill.
Background technology
In recent years, with the aggravation of atmosphere pollution, traditional fuel coal is concentrated the cleanings such as the natural gas for being converted into cleaning fire
Expect the energy, be increasingly becoming the focus of Development of Coal Chemical Industry.For the coal gasifying process of natural gas from coal project, crushed coal pressure gasifying
(or fixed bed pressured gasification) is due to its higher efficiency and exports methane content higher in raw gas, in natural gas from coal
In occupy important function.
In crushed coal pressure gasifying technique, because its coal used is larger-size lump coal, it is impossible to realize continuing for raw material
Pressurize, therefore charging process can only be carried out with periodic semicontinuous operation：Raw material lump coal is added in coal lock at ambient pressure first,
Then using coal gas cooling unit low temperature coal gas to coal lock be forced into it is close with gasification furnace pressure, finally again pass through coal lock and gas
Change the cross over pipe of stove, coal lock is finally pressurizeed with raw gas in gasification furnace, realize that coal locks, coal equal with pressure between gasification furnace
Lock lower valve to open, coal leaked into gasification furnace, coal lock lower valve is closed, the raw gas that coal lock is full of need pressure release to atmospheric pressure phase
Together, after being purged with nitrogen, then the lock coal from coal bunker above to coal, so move in circles.
Coal is locked gas component and approached with raw gas, containing more effective gas component, if qualified discharge after directly burning, will make
Into the serious waste of the energy.Traditional processing that pressure release gas is locked to coal, either pressure release at the initial stage gas containing effective gas component, goes back
It is the latter stage purge gass containing a large amount of nitrogen, is uniformly collected into gas holder, after concentrating pressurization, returns to gas conversion cooling single
Member, recycles effective gas component in coal lock gas.Although the technique, which realize, locks the recovery for having small component in gas to coal, but with
The maximization increasingly of natural gas from coal project, crushed coal pressure gasifying device becomes larger, coal lock gas discharge capacity and latter stage nitrogen
The increasing of the air-blowing amount of sweeping, the defect of this traditional way of recycling becomes clear day by day.Substantial amounts of purging nitrogen is added by unified collect
Return system after pressure, not only wasting substantial amounts of work done during compression is used for the compression of inert gas, while a large amount of nitrogen are introduced into system, drop
The low quality of synthesis gas, for natural gas from coal project, the part nitrogen will also be eventually entered into product natural gas, increased
Indifferent gas composition in gas product, reduces the quality of gas product.
The content of the invention
The present invention solves existing technical problem to preferably overcome existing technological deficiency.The particular technique of use
Scheme is as follows：
A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process, sets pressure release gas recovery system and purge gass to reclaim system
System, using the method for classification recycling, processing step is：
Step 1：Coal lock pressure release gas initially enters dedusting washing system, passes through the washing of gas liquor；
Step 2：Pressure release gas is locked by the coal after step 1, the coal lock pressure release gas in the stage of pressure release in the early stage introduces pressure release gas and returned
Receipts system, is buffered through gas holder, and compressed unit depth is forced into after vapor pressure, single as the conversion cooling of rough coal pneumatic transmission project
Member；
Step 3：Pressure release gas is locked by the coal after step 1, gas is locked in the coal of latter stage purge stages, purge gass is introduced and reclaims system
System, is buffered through gas holder, and after simply being compressed through compressor, delivers to project steam generator system, after burning purification, qualified discharge.
The technique is provided with coal lock gas pipeline and the pressure differential detection and valving system of pressure release gas recovery system, works as inspection
When pressure measurement difference is less than 30kPa or so, the valve towards pressure release gas recovery system is closed, opens and leads to purge gass recovery system valve
Door, at the end of purge, closes the valve towards purge gass recovery system.
Purge gass recovery system is purged using low-pressure nitrogen described in step 3.
The present invention locks pressure release stage different component characteristicses according to coal, and coal is locked into pressure release qi leel level and reclaimed, by rationally setting
Meter, while effectively reclaiming coal lock gas active principle, turn avoid indifferent gas into influence of the system to target product quality,
The defect of traditional recovery process is overcome well；Be particularly suitable for use in large-scale natural gas from coal project, large-scale broken coal pressurization
Gasification installation coal locks the recycling of gas.
Coal lock gas dedusting washing system is initially entered during from broken coal gasification furnace coal lock gas pressure release, passes through the washing of gas liquor
Remove the coal dust or other dust wherein carried secretly, it is purified after coal lock gas enter downstream gas holder buffering.
The coal lock gas for starting pressure release is approached with raw gas component, containing substantial amounts of effective gas component, delivers to the recovery of pressure release gas
System is buffered by gas holder, wait letting out to close to after normal pressure, closes the valve towards pressure release gas recovery system.
Device environment protection standard during to ensure that coal is locked into coal, next needs to purge coal lock with low-pressure nitrogen, is used for
Blow off micro coal lock gas remaining in coal lock.The valve towards purge gass recovery system is opened, starts to purge coal with low-pressure nitrogen
Lock, coal lock gas now contains substantial amounts of nitrogen component, in the gas holder for being collected in purge gass recovery system.After purging terminates, close
Close the valve towards purge gass recovery system.
The composition that is collected in the gas holder of the pressure release gas recovery system coal lock gas close with raw gas, reclaims through pressure release gas and is
System compressor set depth is forced into system pressure (~3.8MPaG), is sent to the conversion cooling unit of project, recycles.
The rich nitrogen coal lock gas in the gas holder of purge gass recovery system is collected in, containing substantial amounts of nitrogen, after simple compression
(~0.5MPaG), delivers to the boiler room of project, after desulphurization during combustion denitration, qualified discharge.
In above-mentioned technique, initial stage coal lock pressure release gas composition and raw gas it is essentially identical, contain substantial amounts of CO, H2Deng effectively
Gas, after being collected to the coal lock gas close to normal pressure by system pressure pressure release, return system of pressurizeing.The part coal lock gas accounts for total coal
The overwhelming majority effectively gas locked in more than the 95% of gas, coal lock gas is recovered.
In above-mentioned technique, the coal lock gas of nitrogen purge stages, containing substantial amounts of nitrogen indifferent gas, is collected into purge gass and returned
In receipts system, keep apart with the coal of return system lock gas, effectively prevent indifferent gas and enter system, decrease because by inertia
Air pressure is reduced to the work done during compression of system pressure waste.
In above-mentioned technique, the rich nitrogen coal lock gas in purge gass recovery system is collected in, although mainly nitrogen component, together
CO, H micro Shi Hanyou2、H2S and NH3If directly discharging, not only environmental protection is not up to standard, causes environmental pollution, flammable effective gas
Component is also not efficiently used.This part coal lock air pressure is reduced to fuel atmospheric pressure, project boiler room is delivered to, has therein
While gas component combustion is imitated using its heat, N, S group therein can be removed further by the flue gas purification system of boiler room
Point, qualified discharge, it is to avoid pollution to environment.
In above-mentioned technique, coal lock tolerance during due to normal pressure in remaining coal lock is less, and purging nitrogen use level is also smaller, is used for
The gas holder small volume for being used to collect rich nitrogen coal lock gas set up；Meanwhile, this strand of coal lock gas is only forced into fuel gas system pressure
Power (~0.5MPaG), presses smaller, therefore the Compressor Group set up is also smaller.
Present invention has the advantages that：Reduced to and individually reclaimed close to normal pressure coal lock gas by system pressure, it is ensured that in coal lock gas
The abundant recovery of active principle, prevents the waste of effective gas；Nitrogen purge stages coal locks the independent recovery of gas, effectively prevent and blows
Sweep nitrogen and enter system, the influence to product gas quality, it is ensured that the quality of product；Independent the returning of nitrogen purge stages coal lock gas
Receive, and be compressed to lower pressure, effectively save traditional handicraft compressed nitrogen component and consume to obtain work done during compression, save project energy
Consumption；The coal of the nitrogen purge stages of collection is locked pneumatic transmission to boiler room and burnt, and is effectively utilized the calorific value of wherein active principle, prevents
Pollution of the waste and discharge of effective gas to environment；The coal of the nitrogen purge stages of collection is locked pneumatic transmission to boiler room and burnt,
The desulphurization and denitration system for being then act through boiler room carries out purified treatment, it is therefore prevented that directly discharge the environmental pollution caused.
Brief description of the drawings
Fig. 1 is a kind of crushed coal pressurized-gasification furnace coal lock pressure release gas recovery process flow chart of the present invention
Marginal data：1st, dedusting washing system, 2, gas holder A, 3, compressor set A, 4, gas holder B, 5, compressor set B
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, below it is right
The embodiment of the present invention is described further, but does not limit protection scope of the present invention.
Coal lock gas dedusting washing system 1 is initially entered during from broken coal gasification furnace coal lock gas pressure release, passes through washing for gas liquor
Wash the removing coal dust or other dust wherein carried secretly, it is purified after coal lock gas enter downstream gas holder buffering.
The coal lock gas for starting pressure release is approached with raw gas component, containing substantial amounts of effective gas component, delivers to the recovery of pressure release gas
System is buffered by gas holder A2, when the pressure differential detection and the valve regulated system that are arranged on coal lock gas pipeline and pressure release gas recovery system
System, when monitoring that pressure difference is less than 30kPa or so, closes the valve towards pressure release gas recovery system, opening is led to purge gass and reclaimed
System valve.
Device environment protection standard during to ensure that coal is locked into coal, next needs to purge coal lock with low-pressure nitrogen, is used for
Blow off micro coal lock gas remaining in coal lock.The valve towards purge gass recovery system is opened, starts to purge coal with low-pressure nitrogen
Lock, coal lock gas now contains substantial amounts of nitrogen component, is collected in the gas holder B4 of purge gass recovery system.After purging terminates,
Close the valve towards purge gass recovery system.
The composition that is collected in the gas holder A2 of the pressure release gas recovery system coal lock gas close with raw gas, is reclaimed through pressure release gas
System compresses unit A3 depth is forced into system pressure (~3.8MPaG), is sent to the conversion cooling unit of project, recycles.
The rich nitrogen coal lock gas in the gas holder B4 of purge gass recovery system is collected in, contains substantial amounts of nitrogen, compressed unit
After B5 simple compressions (~0.5MPaG), the boiler room of project is delivered to, after desulphurization during combustion denitration, qualified discharge.
Embodiment 1：
To produce 12.75 hundred million Nm per year3Exemplified by natural gas from coal project, the project by system pressure pressure release to normal pressure coal at initial stage
It is about 10705Nm to lock gas hourly average amount3/ h, the coal lock tolerance of nitrogen purge stages is 4076Nm3/ h, two strands of coal lock gas compositions
Such as following table：
| Component | Coal lock gas at initial stage (mol%) | Nitrogen purging coal lock gas (mol%) |
| H2 | 32.64 | 4.17 |
| CO | 18.73 | 2.38 |
| CO2 | 29.68 | 4.41 |
| H2O | 3.36 | 34.15 |
| N2 | 2.37 | 52.98 |
| CH4 | 11.95 | 1.53 |
| CnHm | 0.71 | 0.09 |
| HHC | 0.11 | 0.21 |
| H2S | 0.36 | 0.04 |
| HCN | 0.01 | 0.001 |
| NH3 | 0.01 | 0.004 |
| Others | 0.07 | 0.04 |
| Plus and | 100 | 100 |
| Flow Nm3/h | 10705 | 4076 |
According to traditional recovery process, two strands of coal gas are all compressed to system pressure, return system, and compression horsepower is about
2793kW.If carrying out classification recovery according to the present invention, the content of target product Nitrogen in Natural Gases gas can reduce by 1.3 percentage points；
Meanwhile, the total power consumption of two strands of coal lock gas of compression is 2680kW, saves 113kW, if 0.6 yuan/kWh is pressed in the electricity charge, fortune can be saved every year
Row cost is up to 54.2 ten thousand yuan, and advantage is more obvious, and can efficiently separate active principle therein, it is to avoid waste, it is to avoid nitrogen
Gas enters system, it is ensured that product quality, and the coal of the nitrogen purge stages of collection is locked pneumatic transmission to boiler room and burnt, and is effectively utilized it
The calorific value of middle active principle, it is therefore prevented that pollution of the waste and discharge of effective gas to environment.
Equipment of the present invention is described by specific embodiment.Those skilled in the art can use for reference
Present disclosure suitably changes the links such as technological parameter, process equipment to realize corresponding other purposes, and its correlation changes all
Without departing from present disclosure, all similar replacements and change it will become apparent to those skilled in the art that
It is considered as being included within the scope of the present invention.
Claims (3)
1. a kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process, it is characterised in that sets pressure release gas recovery system and blows
Scavenging recovery system, using the method for classification recycling, processing step is：
Step 1：Coal lock pressure release gas initially enters dedusting washing system, passes through the washing of gas liquor；
Step 2：Pressure release gas is locked by the coal after step 1, the coal lock pressure release gas in the stage of pressure release in the early stage introduces pressure release gas and reclaims system
System, is buffered through gas holder, and compressed unit depth is forced into after vapor pressure, and cooling unit is converted as rough coal pneumatic transmission project；
Step 3：Pressure release gas is locked by the coal after step 1, gas is locked in the coal of latter stage purge stages, introduces purge gass recovery system,
Buffered through gas holder, and after simply being compressed through compressor, deliver to project steam generator system, after burning purification, qualified discharge.
2. a kind of crushed coal pressurized-gasification furnace coal lock pressure release gas recovery process according to claim 1, it is characterised in that described
Technique is provided with coal lock gas pipeline and the pressure differential detection and valving system of pressure release gas recovery system, when monitoring pressure difference is less than
During 30kPa, the valve towards pressure release gas recovery system is closed, opens and leads to purge gass recovery system valve, when purge knot
Shu Shi, closes the valve towards purge gass recovery system.
3. a kind of crushed coal pressurized-gasification furnace coal lock pressure release gas recovery process according to claim 1, it is characterised in that step
Purge gass recovery system is purged using low-pressure nitrogen described in 3.
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| CN201510152587.2A CN104726136B (en) | 2015-04-01 | 2015-04-01 | A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process |
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| CN201510152587.2A CN104726136B (en) | 2015-04-01 | 2015-04-01 | A kind of crushed coal pressurized-gasification furnace coal locks pressure release gas recovery process |
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| CN104726136B true CN104726136B (en) | 2017-10-27 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1025483A (en) * | 1996-07-11 | 1998-01-27 | Babcock Hitachi Kk | Lock hopper apparatus and its operating method |
| CN201678642U (en) * | 2009-12-03 | 2010-12-22 | 刘宏建 | Graded pressure charging and discharging device for pressing gasification furnace coal lock |
| CN103215078A (en) * | 2013-04-28 | 2013-07-24 | 上海泽玛克敏达机械设备有限公司 | Pressurizing and decompressing process for coal lock by utilizing byproduct carbon dioxide gas and coaling system |
-
2015
- 2015-04-01 CN CN201510152587.2A patent/CN104726136B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1025483A (en) * | 1996-07-11 | 1998-01-27 | Babcock Hitachi Kk | Lock hopper apparatus and its operating method |
| CN201678642U (en) * | 2009-12-03 | 2010-12-22 | 刘宏建 | Graded pressure charging and discharging device for pressing gasification furnace coal lock |
| CN103215078A (en) * | 2013-04-28 | 2013-07-24 | 上海泽玛克敏达机械设备有限公司 | Pressurizing and decompressing process for coal lock by utilizing byproduct carbon dioxide gas and coaling system |
Non-Patent Citations (1)
| Title |
|---|
| "鲁奇炉煤锁气回收鼓风机压缩机工艺比较分析";马冬云，孟祥清;《化学工程师》;第4期;20140425;第28卷;第91-94页 * |
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Effective date of registration: 20231226 Address after: 300400 Beijing Tianjin Road, Beichen District, Tianjin Patentee after: CHINA TIANCHEN ENGINEERING Co.,Ltd. Patentee after: TIANJIN TIANCHEN GREEN ENERGY ENGINEERING TECHNOLOGY RESEARCH & DEVELOPMENT Co.,Ltd. Patentee after: China Chemical Equipment Technology Group Co.,Ltd. Address before: No. 1 Jingjin Road, Beichen District, Tianjin City, 300400 Patentee before: CHINA TIANCHEN ENGINEERING Co.,Ltd. Patentee before: TIANJIN TIANCHEN GREEN ENERGY ENGINEERING TECHNOLOGY RESEARCH & DEVELOPMENT Co.,Ltd. |