CN203683468U - System of medium and low temperature pyrolysis of low-rank coal by use of heat of high-temperature coke oven gas - Google Patents
System of medium and low temperature pyrolysis of low-rank coal by use of heat of high-temperature coke oven gas Download PDFInfo
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- CN203683468U CN203683468U CN201320827761.5U CN201320827761U CN203683468U CN 203683468 U CN203683468 U CN 203683468U CN 201320827761 U CN201320827761 U CN 201320827761U CN 203683468 U CN203683468 U CN 203683468U
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- coal
- pyrolysis
- heat
- coking
- gas
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- 239000003245 coal Substances 0.000 title claims abstract description 63
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 36
- 239000000571 coke Substances 0.000 title claims abstract description 18
- 238000004939 coking Methods 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 27
- 239000003034 coal gas Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011286 gas tar Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a system of medium and low temperature pyrolysis of low-rank coal by use of heat of a high-temperature coke oven gas. The system comprises a raw coal drying device, a pyrolysis device, a gas generating device and a coal coking device; the raw coal drying device is connected with the pyrolysis device, a semi-coke outlet of the pyrolysis device is communicated with a raw material inlet of the gas generating device, a gas outlet of the gas generating device is communicated with a fuel inlet of the coal coking device, a coke oven gas outlet of the coal coking device is communicated with a heat carrier inlet of the pyrolysis device, and a waste gas outlet of the coal coking device is communicated with the heat carrier inlet of the pyrolysis device; coal pyrolysis and coal coking processes are coupled with each other, a semi-coke obtained by virtue of pyrolysis is gasified to serve as a fuel for coking, the coke oven gas generated by coking is returned to the pyrolysis device so as to supply heat to pyrolysis, and therefore, the heat of the coke oven gas is effectively utilized; waste flue gas generated by coking is introduced into a drying device and used for drying the raw coal, and also is capable of directly contacting with the raw coal to exchange heat, and consequent, the heat exchange efficiency is improved.
Description
Technical field
The utility model belongs to coal chemical technology, relate to a kind of by high temperature coke oven coal gas heat for low-rank coal Low Temperature Thermal analytical system.
Background technology
The fundamental realities of the country of the rich coal of China, oil-poor, weak breath, has determined that China's energy consumption structure is inevitable take coal as main.In recent years, take pyrolytic technique as core, by the clean conversion of sub-prime of coal, the thinking that improves coal resources utilization ratio has become the common recognition of industrial community and academia.
High temperature pyrolysis coking is the high temperature carbonization process of mixed coal.Coal is subject to the hot-fluid heating from furnace wall and furnace bottom under the condition of isolated air, and high temperature carbonization, produces coke, coke-oven gas and coal tar.The coke producing is sent to quenching unit, and the coke-oven gas (about 700-800 ℃) producing in retort process is about the cyclic ammonia water of 78 ℃ in effuser place temperature and sprays and be cooled to 70-80 ℃ of left and right.It is coking heat supply that the coke-oven gas of a cooled part (approximately 40%～50%) is sent into coking furnace combustion chambers burn, the waste gas after burning by regenerator recovery part heat (flue-gas temperature reclaiming after heat is 300-400 ℃ of left and right) after, enter atmosphere.
The middle low temperature pyrogenation dryer section temperature of coal is 200-300 ℃, and pyrolysis section temperature is 500-800 ℃, produces semicoke, tar and pyrolysis gas after middle low temperature pyrogenation.Compared with general bunker coal, semicoke have calorific value high, containing the few feature of S, the solid fuel that can be used as a kind of cleaning is used.
Utility model content
The utility model object is to overcome prior art defect, provide a kind of by high temperature coke oven coal gas heat for low-rank coal Low Temperature Thermal analytical system, solve coke-oven gas in existing high-temperature coking, the inefficient problem of coking flue gas utilization.
For achieving the above object, the utility model adopts following scheme:
High temperature coke oven coal gas heat is used for low-rank coal Low Temperature Thermal analytical system by one, comprise raw coal drying installation, pyrolysis installation, gazogene and coal coking device, raw coal drying installation is connected with pyrolysis installation, the outlet of pyrolysis installation semicoke is communicated with gazogene feed(raw material)inlet, gazogene gas exit is communicated with coal coking device fuel inlet, the outlet of coal coking device coke-oven gas is communicated with pyrolysis installation heat-carrier inlet, and coal coking device waste gas outlet is communicated with drying installation heat-carrier inlet.
Described gazogene is producer gas generator or vapourizing furnace.
Described coal coking device is coking furnace.
The utility model is by pyrolysis of coal and coking coupling, after the char Gasification that pyrolysis is obtained as the fuel of coking, the coke-oven gas that coking produces returns and sends into pyrolysis installation is pyrolysis heat supply, the useless flue gas that coking produces passes into drying installation and is used for being dried raw coal, and compared with prior art beneficial effect is:
1. adopting the coke-oven gas (temperature out is 800～900 ℃) of high temperature is middle low temperature pyrogenation (pyrolysis temperature is 500～800 ℃) unit heating, directly spray compared with ammoniacal liquor cooling to coke-oven gas with traditional technology, can make the heat of coke-oven gas be utilized effectively.
2. in the waste gas that coking produces, temperature is 300～400 ℃ of left and right, utilizes this part low-grade gas can replace bunker coal for the heat supply of low temperature pyrogenation dryer section, removes the full water in coal.
3. the semicoke that in, low temperature pyrogenation produces have calorific value high, containing the low feature of S, coal gas after burning char Gasification is the coke-oven gas resource that 50% left and right has been saved in coking furnace heat supply, also clean environment firendly more of the waste gas producing, improves heat exchange efficiency thereby can carry out direct contact heat transfer with dryer section raw coal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
With reference to accompanying drawing 1, the utility model is made up of middle low temperature pyrogenation and high-temperature-coked two portions.Wherein middle low temperature pyrogenation part comprises raw coal drying installation 1, pyrolysis installation 2, gazogene 3 and coal coking device 4, and described gazogene 3 is producer gas generator or vapourizing furnace, coal coking device 4 is coking furnace.
When experiment, raw coal for low temperature pyrogenation is sent into coal drying device, remove the full water in feed coal, dried coal enters pyrolysis installation and carries out middle low temperature pyrogenation, the mixture of the burnt oil and gas of pyrolysis top gas outlet output, solid outlet output semicoke enters gazogene, and combustion heat supplying is carried out in the combustion chamber that semicoke is sent into coking furnace at the coal gas of gazogene output cleaning.
Coking mixed coal is sent into coking furnace and is carried out high-temperature-coked reaction, and the high temperature coke oven coal gas (temperature is 800 ℃) of generation is sent into pyrolysis unit, with pyrolyzing coal direct contact heat transfer.The waste gas producing after coking furnace combustion chambers burn carries out after heat recuperation in coking furnace regenerator, temperature is reduced to 300-400 ℃, enter subsequently drying installation and the feed coal direct contact heat transfer of middle low temperature pyrogenation part, moisture and other volatiless that waste gas after heat exchange carries drying unit evaporation enter atmosphere, reach the object that rational energy configures, product benefit is large.
Claims (3)
1. high temperature coke oven coal gas heat is used for low-rank coal Low Temperature Thermal analytical system by one kind, it is characterized in that: comprise raw coal drying installation (1), pyrolysis installation (2), gazogene (3) and coal coking device (4), raw coal drying installation (1) is connected with pyrolysis installation (2), the outlet of pyrolysis installation (2) semicoke is communicated with gazogene (3) feed(raw material)inlet, gazogene (3) gas exit is communicated with coal coking device (4) fuel inlet, the outlet of coal coking device (4) coke-oven gas is communicated with pyrolysis installation (2) heat-carrier inlet, coal coking device (4) waste gas outlet is communicated with drying installation (1) heat-carrier inlet.
According to claim 1 by high temperature coke oven coal gas heat for low-rank coal Low Temperature Thermal analytical system, it is characterized in that: described gazogene (3) is producer gas generator or vapourizing furnace.
According to claim 1 and 2 by high temperature coke oven coal gas heat for low-rank coal Low Temperature Thermal analytical system, it is characterized in that: described coal coking device (4) is coking furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320827761.5U CN203683468U (en) | 2013-12-13 | 2013-12-13 | System of medium and low temperature pyrolysis of low-rank coal by use of heat of high-temperature coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320827761.5U CN203683468U (en) | 2013-12-13 | 2013-12-13 | System of medium and low temperature pyrolysis of low-rank coal by use of heat of high-temperature coke oven gas |
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| Publication Number | Publication Date |
|---|---|
| CN203683468U true CN203683468U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320827761.5U Expired - Lifetime CN203683468U (en) | 2013-12-13 | 2013-12-13 | System of medium and low temperature pyrolysis of low-rank coal by use of heat of high-temperature coke oven gas |
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| Country | Link |
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| CN (1) | CN203683468U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879674A (en) * | 2016-05-31 | 2016-08-24 | 武汉钢铁股份有限公司 | Waste heat utilization and denitration combination technology for coke oven smoke |
| CN108559535A (en) * | 2017-12-29 | 2018-09-21 | 浙江百能科技有限公司 | A kind of Multi-stage heat-exchanging device for pyrolysis of coal high heating value gas and high heating value block coke |
| CN109097075A (en) * | 2018-08-24 | 2018-12-28 | 内蒙古大学 | A kind of pyrolysis of coal method of Utilization of Coal thermal decomposition product, heat |
-
2013
- 2013-12-13 CN CN201320827761.5U patent/CN203683468U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879674A (en) * | 2016-05-31 | 2016-08-24 | 武汉钢铁股份有限公司 | Waste heat utilization and denitration combination technology for coke oven smoke |
| CN108559535A (en) * | 2017-12-29 | 2018-09-21 | 浙江百能科技有限公司 | A kind of Multi-stage heat-exchanging device for pyrolysis of coal high heating value gas and high heating value block coke |
| CN108559535B (en) * | 2017-12-29 | 2021-12-14 | 浙江百能科技有限公司 | Multi-stage heat exchange device for preparing high-calorific-value coal gas and high-calorific-value lump coke by coal pyrolysis |
| CN109097075A (en) * | 2018-08-24 | 2018-12-28 | 内蒙古大学 | A kind of pyrolysis of coal method of Utilization of Coal thermal decomposition product, heat |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |