CN2232040Y - Moving-bed pyrolysis chamber gas-steam joint producing furnace - Google Patents
Moving-bed pyrolysis chamber gas-steam joint producing furnace Download PDFInfo
- Publication number
- CN2232040Y CN2232040Y CN 95223956 CN95223956U CN2232040Y CN 2232040 Y CN2232040 Y CN 2232040Y CN 95223956 CN95223956 CN 95223956 CN 95223956 U CN95223956 U CN 95223956U CN 2232040 Y CN2232040 Y CN 2232040Y
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- Prior art keywords
- pyrolysis chamber
- gas
- steam
- chamber
- bed pyrolysis
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- Expired - Fee Related
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000001351 cycling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000219000 Populus Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 210000000498 stratum granulosum Anatomy 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a moving-bed pyrolysis chamber gas-steam joint producing furnace, which is characterized in that the material return between the combustion chamber of a circulation-bed and the pyrolysis chamber of a moving-bed adopts a material return structure in the type of artesian multiple points; simultaneously, a dust remover with a granular layer and a blind is arranged in the pyrolysis chamber; a self drying device is arranged on the upper part thereof. Because of the adoption of the technical proposal, the retention time of the material in the pyrolysis chamber can be effectively increased; the gas productivity of unit coal and the reliability of operation of the device can be increased; original dust concentration in the gas and steam rate for the gas can be decreased; a purification system for crude gas generated by the joint producing furnace can be improved; the thermal conversion efficiency of the gas can be further improved.
Description
The utility model relates to a kind of coal gas-steam co-producing stove, relates in particular to the circulation bed coal gas-steam co-producing device of a kind of Tape movement bed pyrolysis chamber.
In the prior art, for circulation bed coal gas-steam co-producing technology, generally there are two kinds of structures the pyrolysis chamber, i.e. fluidized bed pyrolysis chamber and moving bed pyrolysis chamber.These two kinds of technological processs all are to utilize the cycling hot material as thermal barrier, make coal pyrolysis in the pyrolysis chamber, generate coal gas and semicoke after the pyrolysis, and gas purification is handled the back for city and industrial application; Semicoke returns boiler furnace and produces steam.Fluidizing medium is generally made with water vapor in above-mentioned fluidized bed pyrolysis chamber, and the vapour content in the raw gas is big, needs a large amount of cooling water condensation water vapors in gas purification process, thereby has reduced gas reforming thermo-efficiency, has increased running cost simultaneously.On the other hand, the fluidized state in the pyrolysis chamber makes the dustiness height in the raw gas, has increased the dedusting difficulty in the gas purification, and the preparation system of coal is also complicated.
Existing moving bed pyrolysis technology adopts single-point material Recycle design more, and the thermal material that will contain semicoke is sent boiler furnace back to the dilute phase pneumatic conveying method.This brings two problems: the one, and material moves inhomogeneous in the pyrolysis chamber, thereby has shortened the actual residence time of material in moving-bed, has reduced the gas yield of unit coal-supplying amount.The 2nd, air conveying heavy wear associated components has reduced the equipment reliability of operation, and water vapor and the Dust Capacity that contains in its raw gas is also higher simultaneously.
For overcoming deficiency of the prior art and defective, the purpose of this utility model is a kind of circulation bed coal gas-steam co-producing stove that has the moving bed pyrolysis chamber of design, this stove both can increase the residence time of material in the pyrolysis chamber, improve the gas yield of unit coal-supplying amount, also have simultaneously from dedusting, the function of self-desiccation, thus original steam quality and dust content in the coal gas reduced effectively.
The utility model is achieved through the following technical solutions: it is mainly by coproduction stove circulation bed combustion chamber, separator, moving bed pyrolysis chamber three parts are formed, and it is characterized in that the loopback of material between circulation bed combustion chamber and the moving bed pyrolysis chamber adopts gravity flow multipoint mode loop back configuration.Gravity flow multipoint mode loop back configuration is between bottom, pyrolysis chamber and combustion chamber a plurality of feed back points to be housed, and deadweight flows into fluidised bed combustion chamber by material, thereby has increased the residence time of material in the pyrolysis chamber, has improved the productive rate of coal gas.In order to reduce dust content and the steam quality in the raw gas, the utility model adopts at the indoor granular layer window shutter fly-ash separator that is equipped with of moving bed pyrolysis, and the self-desiccation device is housed at an upper portion thereof, this device is made up of cage that is contained in top, pyrolysis chamber and steam air ejector.
Accompanying drawing 1 is the structure diagram of moving bed pyrolysis chamber coal gas-steam co-producing stove.
Accompanying drawing 2 is that the A of accompanying drawing 1 is to view.
Describe concrete structure of the present utility model in detail below in conjunction with accompanying drawing, principle of work and embodiment:
The utility model is mainly by circulation bed combustion chamber 1, and separator 2 and moving bed pyrolysis chamber 3 three parts are formed.Separator 2 can adopt three vortex inner separators.Coal gas-steam co-producing process is as follows: the fuel that pyrolysis is used is sent into feed back warehouse 9 below the separator 2 by screw feeder 7, after elevated temperature heat material that separator separates tentatively mixes, together by charging vertical pipe 10 inflow pyrolysis chambers 3.At the top, pyrolysis chamber, the self-desiccation device is housed, this device by cage 4 and be contained in the pyrolysis chamber and storage bin 9 between the space in steam air ejector 8 form.On the cage top board, have the aperture that communicates with headspace.Enter with fuel in the process on coproduction stove and top, pyrolysis chamber in pyrolysis, fuel is heated by high-temperature material, the part water evaporates, and water vapor is then aspirated into combustion chamber by aperture by steam air ejector.The mixture of fuel moves down in the pyrolysis chamber in the process, and fuel pellet is drying, intensification, generation destructive distillation pyrolysis further.Be provided with granular layer window shutter fly-ash separator 5 in the pyrolysis chamber, the raw gas that pyrolysis discharges compiles the back by window shutter and flows out the pyrolysis chamber.Because material translational speed in the pyrolysis chamber is slow, raw gas is also very low by the speed of bed internal granular layer and window shutter, and most of dust of carrying secretly in the dry distillation gas is by granular layer filtering effectively.The required heat of fuel thermal decomposition is provided by the cycling hot material fully.Semicoke that forms behind the combustion and pyrolysis and recycle stock are by being contained in the gravity flow multipoint mode loop back configuration 6 of bottom, pyrolysis chamber, and deadweight flows into circulation bed combustion chamber 1 by material.Gravity flow multipoint mode loop back configuration adopts 2-4 loopback points usually.Semicoke provides boiler for producing steam and the needed heat of heating cycle material in circulation bed combustion chamber 1 internal combustion.Recycle stock is analysed to carry secretly by poplar in the combustion chamber and is entered vortex inner separator 2, enters moving bed pyrolysis chamber 3 again by separator.So move in circles, realize coal gas-steam co-producing.
The utility model compared with prior art has the following advantages and beneficial effect: owing to adopt Gravity flow multipoint mode loopback of material structure, in the pyrolysis chamber, be provided with simultaneously the dedusting of stratum granulosum shutter Device and the self-desiccation device is housed has at an upper portion thereof not only increased material effectively in the pyrolysis chamber The time of staying, improved gas yield and the equipment reliability of operation of unit coal-supplying amount, and can Original dust content and steam quality in the coal gas are greatly reduced, thereby can make coproduction rough coal that stove produces The cleaning system of gas is improved, and the thermal conversion efficiency of coal gas is further improved.
Claims (4)
1, a kind of moving bed pyrolysis chamber coal gas-steam co-producing stove, mainly form, it is characterized in that the loopback of material between circulation bed combustion chamber and the moving bed pyrolysis chamber adopts gravity flow multipoint mode loop back configuration [6] by circulation bed combustion chamber [1], separator [2], moving bed pyrolysis chamber [3] three parts of coproduction stove.
2,, it is characterized in that at the indoor granular layer window shutter fly-ash separator [5] that is provided with of moving bed pyrolysis according to the described moving bed pyrolysis of claim 1 chamber coal gas-steam co-producing stove.
3, according to claim 1 or 2 described moving bed pyrolysis chamber coal gas-steam co-producing stoves, it is characterized in that on moving-bed top the self-desiccation device being housed, this device is made up of cage [4] and steam air ejector [8].
4,, it is characterized in that above-mentioned gravity flow multipoint mode loop back configuration adopts 2-4 loopback points according to the described moving bed pyrolysis of claim 3 chamber coal gas-steam co-producing stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95223956 CN2232040Y (en) | 1995-11-03 | 1995-11-03 | Moving-bed pyrolysis chamber gas-steam joint producing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95223956 CN2232040Y (en) | 1995-11-03 | 1995-11-03 | Moving-bed pyrolysis chamber gas-steam joint producing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2232040Y true CN2232040Y (en) | 1996-07-31 |
Family
ID=33870873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95223956 Expired - Fee Related CN2232040Y (en) | 1995-11-03 | 1995-11-03 | Moving-bed pyrolysis chamber gas-steam joint producing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2232040Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318796C (en) * | 2004-07-26 | 2007-05-30 | 中国科学院工程热物理研究所 | Method for producing both gas and steam, and boiler of circulating fluid bed with pyrolysis vaporizer |
| CN1864030B (en) * | 2003-08-21 | 2010-09-29 | 国际环保技术公司 | Shaft seal for a pyrolytic waste treatment system |
| CN103242873A (en) * | 2013-05-30 | 2013-08-14 | 神华集团有限责任公司 | Pyrolyzer |
-
1995
- 1995-11-03 CN CN 95223956 patent/CN2232040Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864030B (en) * | 2003-08-21 | 2010-09-29 | 国际环保技术公司 | Shaft seal for a pyrolytic waste treatment system |
| CN1318796C (en) * | 2004-07-26 | 2007-05-30 | 中国科学院工程热物理研究所 | Method for producing both gas and steam, and boiler of circulating fluid bed with pyrolysis vaporizer |
| CN103242873A (en) * | 2013-05-30 | 2013-08-14 | 神华集团有限责任公司 | Pyrolyzer |
| CN103242873B (en) * | 2013-05-30 | 2015-06-17 | 神华集团有限责任公司 | Pyrolyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |