CN101580739A - Fixed bed straw gasification process with tar backflash - Google Patents
Fixed bed straw gasification process with tar backflash Download PDFInfo
- Publication number
- CN101580739A CN101580739A CN 200910025366 CN200910025366A CN101580739A CN 101580739 A CN101580739 A CN 101580739A CN 200910025366 CN200910025366 CN 200910025366 CN 200910025366 A CN200910025366 A CN 200910025366A CN 101580739 A CN101580739 A CN 101580739A
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- Prior art keywords
- tar
- backflash
- temperature
- fixed bed
- combustion gas
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- 238000002309 gasification Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 21
- 235000014820 Galium aparine Nutrition 0.000 title claims description 9
- 240000005702 Galium aparine Species 0.000 title 1
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 238000005336 cracking Methods 0.000 claims abstract description 4
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000000567 combustion gas Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 241001101998 Galium Species 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 108010063955 thrombin receptor peptide (42-47) Proteins 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
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
- Solid-Fuel Combustion (AREA)
Abstract
The invention provides a fixed bed stalk gasification process with tar backflash. The process comprises the following steps of: under the condition of thermal insulation, removing dust in high-temperature combustible gas generated by a gasification furnace; collecting tar in the combustible gas by a method combining inertia and cooling; and automatically refluxing the collected tar to a high-temperature oxygen enriched combustion zone of the gasification furnace for combustion and cracking under actions of gas injection and self gravity. The process has the advantages of greatly lowering the content of the tar in the combustible gas, realizing the automatic backflash of the tar, improving the overall gasification efficiency, calorific value of the combustible gas and the quality of the combustible gas, and solving the secondary pollution problem of the tar.
Description
Technical field:
The present invention relates to a kind ofly remove tar and utilize gas injection method to impel the straw gasification process of tar backflash with inertia cooling, a kind of fixed bed straw gasification process with tar backflash.
Background technology
With regard to gasifying stalk, no matter be to adopt fixed bed or fluidized bed gasifying process, in reaction process, because the restriction of gasification temperature and reaction conditions contains tar inevitably in the combustion gas.When fuel gas temperature reduces, the tar in the combustion gas cold wall condense and with combustion gas in dust adhere to mutually, form grease.Grease is constantly accumulation on follow up device or pipeline, will cause the obstruction of device and pipeline, and what make vapourizing furnace can't works better, and it is also difficult unusually to clear up these greases.Existing gasifying stalk device has mostly adopted the mode of traditional washing decoking, and this mode not only tar is difficult to recycle, and pollutes but also can produce secondary wastewater.Because tar itself has certain calorific value, throw aside and can cause system energy loss.
Summary of the invention
In order to overcome the problem that exists in the gasifying stalk, the invention provides a kind of fixed bed straw gasification process with tar backflash, this technology can realize that tar strile-backs automatically, avoid clearing up the inconvenience that tar brings, improved gasification efficiency, improve the calorific value of combustion gas, also reduced the cost of gasifying stalk, also solved tar to the second environmental pollution problem simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: in this technology, the vapourizing furnace of a tubular is arranged, this vapourizing furnace is divided into the updraft type fixed-bed gasification furnace that the gasification downdraft fixed-bed gasification furnace that enters from the bottom of wind and gasification wind enter from top; On the sidewall of this vapourizing furnace, the injector of injection air-flow is installed; This vapourizing furnace is by its sidewall top and the bottom, and order is communicated with airway, filter collector, airway, tar trap, collects burnt groove, the pipe that strile-backs, fluid-tight bend pipe, strile-back and manage and the pipe that strile-backs of pilot burner, makes the tar of collection be injected into vapourizing furnace and burns away; Wherein, the temperature of discharging through vapourizing furnace is under 500 ℃～1500 ℃ conditions, in filter collector, the high-temperature gas that vapourizing furnace is produced carries out dedusting earlier, and through the tar trap, the method for utilizing inertia to combine with cooling captures the tar in the combustion gas, the tar that captures, by under the effect of gas injection power and self gravitation, drained into the high-temperature oxygen-enriched district of vapourizing furnace in injector, tar burns and cracking under high-temperature oxygen-enriched condition.
Its beneficial effect is: the present invention has realized that tar strile-backs automatically, and the inconvenience of having avoided cleaning tar to bring has improved gasification efficiency, has improved the calorific value of combustion gas, and the cost that has reduced gasification has also solved the secondary pollution problem of tar simultaneously.
Description of drawings
The invention will be further described below in conjunction with drawings and the embodiments;
Accompanying drawing 1 is downdraft fixed bed gasification process structure figure of the present invention;
Accompanying drawing 2 is the updraft type fixed bed gasification process structure figure of invention.
Among Fig. 1, Fig. 2,1. vapourizing furnace, 2. ash releasing tube, 3. filter collector, 4. airway, 5. airway, 6. tar trap, 7. water cooler, 8. gas outlet pipe, the 9. burnt groove of collection, pipe 10. strile-backs, 11. the fluid-tight bend pipe, 12. pipes that strile-back, 13. injectors, 14. injection air inlet tubes, 15. gasification wind inlet tubes.
Embodiment
In the drawings, in this technology, the vapourizing furnace 1 of a tubular is arranged, this vapourizing furnace 1 is divided into the updraft type fixed-bed gasification furnace (Fig. 2-1) that the gasification downdraft fixed-bed gasification furnace (Fig. 1-1) that enters from the bottom of wind and gasification wind enter from top; On the sidewall of this vapourizing furnace 1, the injector 13 of injection air-flow is installed, by its sidewall top and the bottom, order is communicated with airway 4, filter collector 3, airway 5, tar trap 6, the burnt groove 9 of collection, the pipe 10 that strile-backs, fluid-tight bend pipe 11, strile-back pipe 12 and pilot burner 13, makes the tar of collection be injected into vapourizing furnace 1 and burns away; Wherein, the maintenance temperature of reaction of discharging through vapourizing furnace 1 is under 500 ℃～1500 ℃ conditions, in filter collector 3, the high-temperature gas that vapourizing furnace is produced carries out dedusting earlier, 6 li of tar traps, the method of utilizing inertia to combine with cooling captures the tar in the combustion gas, the tar that captures, under the condition of insulation more than 100 ℃, in injector 13 by under the effect of gas injection power and self gravitation, drained into the high-temperature oxygen-enriched district of vapourizing furnace, tar burns and cracking under high-temperature oxygen-enriched condition.
In Fig. 1, gasification wind enters vapourizing furnace 1 by gasification wind inlet tube 15 and stalk wherein carries out gasification reaction, and the combustion zone temperature range is 500 ℃～1500 ℃, the dust of generation and the combustion gas of gas phase tar, filter collector 3 in airway 4 enters, and the dust that separates is got rid of by ash releasing tube 2; Combustion gas after the dedusting enters tar trap 6 through airway 5, in tar trap 6, be provided with water cooler 7, water cooler 7 is connected with heat-eliminating medium, adopt the gap heat exchange mode that combustion gas is lowered the temperature, agglomerative tar drop enters into water cooler 7 and carries out wall and capture in the combustion gas under inertia effect, and the wall surface temperature of its water cooler 7 should must guarantee that tar liquid has enough flowabilities more than 100 ℃, impel the tar that captures to rely on gravity to conflux, combustion gas is then discharged from gas outlet pipe 8; The tar that captures is flowed to the burnt groove 9 of collection, and pipe 10, fluid-tight bend pipe 11, strile-back pipe 12 and the injector 13 of strile-bacing of flowing through successively, is gone into vapourizing furnace by loopback, and air is sent into injector 13 by injection air inlet tube 14, impels tar to reflux; Tar in the fluid-tight bend pipe 11 reaches the heavy position pressure head that the location liquid level difference produces, realize that tar refluxes automatically, the negative pressure that injector utilizes airflow injection to produce enters the vapourizing furnace high temperature combustion zone with the tar injection, the fluid-tight bend pipe 11 of design and injector 13 structures guarantee air not can with combustion gas mixing.
In Fig. 1, system shown in Figure 2, filter collector 3 and airway 4, airway 5 all adopt the lagging material thermal insulation; Collect burnt groove 9, the pipe 10 that strile-backs, the pipe 12 that strile-backs, fluid-tight bend pipe 11 and injector 13 all adopt hot blast (or combustion gas) to carry out temperature control companion heat, to guarantee the flowability of tar in the pipe.
In the drawings, before entering cooling tar trap 6, under 400 ℃～900 ℃ conditions of insulation the high temperature ash disposal is carried out in combustion gas, avoided the mutual adhesion of dust and tar, guarantee the flowability of tar, this moment, tar should be in gas phase state fully.
In the drawings, utilize airflow injection and gravity fluid-tight mode to prevent that air from returning leap up (with combustion gas mixing); Consider the sensible heat deficiency of tar self, should make the pipeline that strile-backs keep temperature more than 105 ℃, the pipe that strile-backs adopts hot blast or combustion gas to carry out temperature control companion heat more than 150 ℃, guarantees the flowability of tar.
In the drawings, the tar loopback location is positioned at the oxidizing fire district, and this zone is an oxidizing atmosphere, analyses carbon in the time of can effectively avoiding tar backflash, and blocking pipe helps the burning and the decomposition of tar.
Claims (5)
1. fixed bed straw gasification process with tar backflash; It is characterized in that: will keep temperature of reaction under 500 ℃～1500 ℃ condition through vapourizing furnace 1 discharge, in filter collector (3), the high-temperature gas that vapourizing furnace is produced carries out dedusting earlier, in tar trap (6) lining, the method of utilizing inertia to combine with cooling captures the tar in the combustion gas, the tar that captures, under the condition of insulation more than 100 ℃, in injector (13) by the effect of gas injection power and self gravitation under, drained into the high-temperature oxygen-enriched district of vapourizing furnace, tar burns and cracking under high-temperature oxygen-enriched condition.
2. a kind of fixed bed straw gasification process according to claim 1 with tar backflash; It is characterized in that: cooling tar trap (6) is preceding entering, and under the condition of 400 ℃～900 ℃ of insulations, the high temperature ash disposal is carried out in combustion gas, avoids the mutual adhesion of dust and tar, guarantees the flowability of tar, and at this moment, tar should be in gas phase state fully.
3. a kind of fixed bed straw gasification process according to claim 1 with tar backflash; It is characterized in that: in tar trap (6), be provided with water cooler (7), water cooler (7) is connected with heat-eliminating medium, adopt the gap heat exchange mode that combustion gas is lowered the temperature, agglomerative tar drop enters into water cooler (7) and carries out wall and capture in the combustion gas under inertia effect, the wall surface temperature of its water cooler (7) should be more than 100 ℃, must guarantee that tar liquid has enough flowabilities, impel the tar that captures to rely on gravity to conflux.
4. a kind of fixed bed straw gasification process according to claim 1 with tar backflash; It is characterized in that: the tar in the fluid-tight bend pipe reaches the heavy position pressure head that the location liquid level difference produces, realize that tar refluxes automatically, the negative pressure that injector utilizes airflow injection to produce enters the vapourizing furnace high temperature combustion zone with the tar injection, the design fluid-tight bend pipe 11 and injector 13 structures, guarantee air not can with combustion gas mixing.
5. a kind of fixed bed straw gasification process according to claim 1 with tar backflash; It is characterized in that: in Fig. 1, system shown in Figure 2, filter collector (3) and airway (4), airway (5) all adopt the lagging material thermal insulation; Collect burnt groove (9), the pipe (10) that strile-backs, the pipe (12) that strile-backs, fluid-tight bend pipe (11) and injector (13) all adopt hot blast (or combustion gas) to carry out temperature control companion heat, to guarantee the flowability of tar in the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910025366 CN101580739B (en) | 2009-03-12 | 2009-03-12 | Fixed bed straw gasification process with tar backflash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910025366 CN101580739B (en) | 2009-03-12 | 2009-03-12 | Fixed bed straw gasification process with tar backflash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101580739A true CN101580739A (en) | 2009-11-18 |
| CN101580739B CN101580739B (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910025366 Expired - Fee Related CN101580739B (en) | 2009-03-12 | 2009-03-12 | Fixed bed straw gasification process with tar backflash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101580739B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229818A (en) * | 2011-05-25 | 2011-11-02 | 程浩德 | Tar processing and reburning device for household straw gasifier |
| CN102492468A (en) * | 2011-11-29 | 2012-06-13 | 徐州燃控科技股份有限公司 | Fixed bed biomass gasification process and equipment capable of collecting tar in steps |
| CN103173251A (en) * | 2013-03-25 | 2013-06-26 | 广州薪光合环保技术有限公司 | Method for automatically removing tar oil from fixed-bed biomass gasification furnace |
| CN105462618A (en) * | 2015-12-08 | 2016-04-06 | 新奥科技发展有限公司 | Hydrogasification furnace, hydrogasification system and hydrogasification method |
| CN105940088A (en) * | 2013-12-10 | 2016-09-14 | 乔治洛德方法研究和开发液化空气有限公司 | Process for the fixed-bed pressure gasification of carbonaceous fuels |
| CN106753567A (en) * | 2017-01-06 | 2017-05-31 | 中国科学院广州能源研究所 | A kind of updraft type steam gasification device for biomass and blended tars |
| CN109963928A (en) * | 2016-10-07 | 2019-07-02 | 美瓦能源有限公司 | Improved gasification system and method |
| CN114591768A (en) * | 2022-03-25 | 2022-06-07 | 河南农业大学 | Low-tar biomass natural gas production equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435369A (en) * | 2002-09-06 | 2003-08-13 | 中国科学院广州能源研究所 | Method and apparatus for producing hydrogen by catalytic cracking of biologic matter |
| JP4312632B2 (en) * | 2004-03-03 | 2009-08-12 | 中外炉工業株式会社 | Biomass gasification system and operation method thereof |
-
2009
- 2009-03-12 CN CN 200910025366 patent/CN101580739B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229818A (en) * | 2011-05-25 | 2011-11-02 | 程浩德 | Tar processing and reburning device for household straw gasifier |
| CN102229818B (en) * | 2011-05-25 | 2013-09-18 | 程浩德 | Tar processing and reburning device for household straw gasifier |
| CN102492468A (en) * | 2011-11-29 | 2012-06-13 | 徐州燃控科技股份有限公司 | Fixed bed biomass gasification process and equipment capable of collecting tar in steps |
| CN103173251A (en) * | 2013-03-25 | 2013-06-26 | 广州薪光合环保技术有限公司 | Method for automatically removing tar oil from fixed-bed biomass gasification furnace |
| CN103173251B (en) * | 2013-03-25 | 2014-12-10 | 赵广健 | Method for automatically removing tar oil from fixed-bed biomass gasification furnace |
| CN105940088A (en) * | 2013-12-10 | 2016-09-14 | 乔治洛德方法研究和开发液化空气有限公司 | Process for the fixed-bed pressure gasification of carbonaceous fuels |
| CN105462618A (en) * | 2015-12-08 | 2016-04-06 | 新奥科技发展有限公司 | Hydrogasification furnace, hydrogasification system and hydrogasification method |
| CN109963928A (en) * | 2016-10-07 | 2019-07-02 | 美瓦能源有限公司 | Improved gasification system and method |
| CN106753567A (en) * | 2017-01-06 | 2017-05-31 | 中国科学院广州能源研究所 | A kind of updraft type steam gasification device for biomass and blended tars |
| CN106753567B (en) * | 2017-01-06 | 2022-02-25 | 中国科学院广州能源研究所 | Updraft type water vapor gasification device for mixture of biomass and tar |
| CN114591768A (en) * | 2022-03-25 | 2022-06-07 | 河南农业大学 | Low-tar biomass natural gas production equipment |
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| Publication number | Publication date |
|---|---|
| CN101580739B (en) | 2013-01-09 |
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Address after: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee after: XUZHOU KERONG ENVIRONMENTAL RESOURCES Co.,Ltd. Address before: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XUZHOU COMBUSTION CONTROL TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |