CN1974733A - Multi-jet composite fluidized bed coal and biomass gasifier - Google Patents
Multi-jet composite fluidized bed coal and biomass gasifier Download PDFInfo
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- CN1974733A CN1974733A CN 200610156156 CN200610156156A CN1974733A CN 1974733 A CN1974733 A CN 1974733A CN 200610156156 CN200610156156 CN 200610156156 CN 200610156156 A CN200610156156 A CN 200610156156A CN 1974733 A CN1974733 A CN 1974733A
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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]
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Abstract
The multi-jet composite fluidized bed coal and biomass gasifier consists of a fluidized bed, a synthesized gas outlet, a water vapor inlet and jet pipes. The fluidized bed consists of three parts, including the lower conic bed body, the middle expanding section and the upper expanding section, and has one cyclonic separator inside the upper expanding section. The synthesized gas outlet is in the top of the cyclonic separator. The jet pipes in the lower bed body include radial auxiliary material feeding jet pipes in two layers and main material feeding jet pipes in the center of bed body. The bed body has cinder outlet in the conic bottom and water vapor inlet beside the cinder outlet and the fluidized bed has outside heat insulating layer. The present invention has the advantages of simple structure, low cost and easy operation.
Description
Technical field
The present invention is a kind of gasification installation of handling coal and biomass mixture, relates in particular to the multi-jet composite fluidized bed gasification installation of a kind of coal and biomass mixture gasification preparation synthetic gas.
Background technology
Coal is the maximum fossil oils of China's reserves.Along with the adjustment of national energy structure, although coal shared ratio in energy expenditure descends to some extent, the total amount consumed of coal but presents the trend of cumulative year after year.Simultaneously, coal has caused serious pollution to environment in exploitation, transportation and use.As everyone knows, as a kind of cleaning coal conversion technology efficiently, the history of the existing last 100 years of the suitability for industrialized production of gasification.Especially in recent years, along with skyrocketing and the surge of domestic processed oil demand of international petroleum price, further catalysis synthetic liquid fuel of the carbon monoxide and hydrogen mixture that coal gets through vaporizing system (being commonly referred to synthetic gas) or industrial chemicals intermediate have been subjected to the unprecedented attention of domestic industry circle and academia, and dropped into great amount of manpower and carried out relevant research and development with material resources, what have enters pilot scale or half suitability for industrialized production scale.After " Kyodo Protocol " came into force, biomass were the extremely abundant renewable energy source of zero-sum reserves as the clean discharging of a kind of carbonic acid gas, have caused the more and more many concerns of international community.Equally, biomass gasification technology also has very important realistic meaning to China's Energy restructuring.Therefore; develop coal and biomass mixture gasification installation efficiently; be converted into fuel such as liquefied hydrocarbon, alcohols and ethers through follow-up synthesis reactor; both can alleviate dependence to international crude oil market; also can reduce domestic consumption of coal resources, have the social benefit of active protection environment simultaneously.
Fluidized-bed reactor mixes advantages such as abundant and transfer efficiency height and is widely used in coal and gasifying biomass field because of its gas-solid.Yet industrialized at present U-gas vapourizing furnace, KRW gasification and the poly-powder coal gasification furnace (as Chinese patent ZL94106781.5 and ZL03262731.9) of ash molten (gluing) all adopt single efflux nozzle, i.e. one-jet fluidized-bed.Along with the further amplification of equipment, all big or jet gas speed increases and increases formed bubble size with the ejector nozzle increasing diameter after jet penetration and the jet avalanche, and its consequence reduces the gas-solid contact efficiency, finally has influence on gasification efficiency and synthetic gas quality.In addition, in biomass fluidized bed gasification furnace, in order to improve the fluidizing performance of solid particulate, need usually to add a certain amount of solid, inert medium, for example do not have the quartz sand of catalytic performance and have the rhombspar etc. of katalysis.Chinese patent (ZL200420078434.5) improves biomass fluidizing performance problem though proposed to be provided with the method for pulling out glassware above the spiral conveyer opening for feed, but investment, operation and the maintenance cost thereof of device increase to some extent.
Summary of the invention
The multi-jet composite fluidized bed vapourizing furnace that the purpose of this invention is to provide a kind of simple in structure, cost is low, easy-operating coal and biomass gasify altogether preparation synthetic gas.
The object of the present invention is achieved like this, it is by fluidized-bed, syngas outlet, steam entry, jet pipe is formed, it is characterized in that fluidized-bed is by the lower bed body, middle part expanding reach and top expanding reach three parts are formed, the diameter of middle part expanding reach is bigger than lower bed body, the diameter of top expanding reach is bigger than middle part expanding reach, a cyclonic separator is arranged in the expanding reach of top, the cyclonic separator top is a syngas outlet, the tapered structure in lower bed body bottom, jet pipe is divided into power stream feed-pipe and assisted jet pipe, radially divide the inside and outside two-layer assisted jet pipe that is equipped with at the pyramidal structure place of lower bed body bottom, be at the center of lower bed body bottom and with the assisted jet pipe power stream feed-pipe is housed on the same horizontal plane, the bottom of lower bed body bottom pyramidal structure is the lime-ash outlet, there is steam entry lime-ash outlet side, and there is the thermal insulation layer insulation fluidized-bed outside.
Aforesaid assisted jet pipe is that adjacent inner layer assisted jet pipe or adjacent outer assisted jet pipe are the equilateral triangle distribution, and each assisted jet tube spacing equates.
The propellant combination of coal and biomass and portion of air enter jet fluidized-bed by the power stream feed-pipe, water vapor enters in the fluidized-bed through steam entry and internal layer assisted jet pipe, another part air then enters fluidized-bed by outer assisted jet pipe, propellant combination is under the effect of water vapor, coal and biomass generation pyrolysis and gasification reaction, synthetic gas is discharged from syngas outlet after cyclonic separator separates, and lime-ash is discharged by the lime-ash outlet.
The present invention compared with prior art has the following advantages:
1. the present invention can realize the gasification to coal and biomass propellant combination, and the mutual blended synergistic effect of coal and biomass can be improved the fluidizing performance of the two effectively;
2. the present invention utilize air conveying propellant combination with coal and biomass with air be conveyed into jet fluidized-bed in, need not under the situation of other utility appliance, guarantee that charging is stable;
3. fluidized-bed adopts the combined type design, and bed body upper design has the expanding reach of two reducings, has cindery synthetic gas through two reducing expanding reach the time, and gas, intrinsic effect are separated.The bed body adopts pyramidal structure, and the flowing of pyrolysis, gasification, transmission and reaction are strengthened;
4. a cyclonic separator is arranged in the expanding reach of fluidized-bed top, can make synthetic gas and grey high efficiency separation;
5. fluidized-bed adopts the charging of power stream feed-pipe, because the fluerics oxygen concentration is higher, the main burning thermopositive reaction that coal and biomass take place, and circumferential annular district oxygen concentration is lower, the main pyrolysis that coal and biomass take place and with the gasification thermo-negative reaction of water vapor, the heat that the fluerics combustion reactions discharges, be passed to annular zone by strong internal recycle of particulate and the diffusion of central section high-temperature gas, for annular zone pyrolysis and gasification thermo-negative reaction provide energy, realize the direct coupling of energy, make equipment be tending towards compact;
6. pyramidal structure place, bed body bottom radially divides the two-layer assisted jet pipe that is equipped with, internal layer assisted jet caliber is a bit larger tham skin, adjacent jet pipe is the equilateral triangle distribution in each layer, and each jet pipe spacing equates, the setting of a plurality of jet pipes makes and forms a plurality of jet bed modules in the fluidized-bed, guaranteed that high-temperature gas fully contacts with solid-fuelled, in addition, inside and outside layer assisted jet pipe feeds water vapor and warm air respectively, and gasification thermo-negative reaction and burning thermopositive reaction are reinforced simultaneously;
7. under the identical jet tolerance, compare with single jet, the tolerance by each jet pipe greatly reduces, and the bubble diameter that generates after jet penetration and the jet avalanche also obviously reduces, and bubble distributes more even, is easy to technological operation control.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is an A-A direction synoptic diagram of the present invention
As shown in the figure, the 1st, steam entry, the 2nd, power stream feed-pipe, the 3rd, assisted jet pipe, the 4th, lower bed body, the 5th, middle part expanding reach, the 6th, top expanding reach, the 7th, syngas outlet, the 8th, cyclonic separator, the 9th, thermal insulation layer, the 10th, lime-ash outlet.
Embodiment
Fluidized-bed is by lower bed body 4, middle part expanding reach 5 and top expanding reach 6 three parts are formed, the diameter of middle part expanding reach 5 is bigger than lower bed body 4, the diameter of top expanding reach 6 is bigger than middle part expanding reach 5, a cyclonic separator 8 is arranged in the top expanding reach 6, cyclonic separator 8 tops are syngas outlet 7, the tapered structure in lower bed body 4 bottoms, jet pipe is divided into power stream feed-pipe 2 and assisted jet pipe 3, radially divide the two-layer assisted jet pipe 3 that is equipped with at the pyramidal structure place of lower bed body 4 bottoms, be at the center of lower bed body 4 bottoms and with assisted jet pipe 3 power stream feed-pipe 2 is housed on the same horizontal plane, the bottom of lower bed body 4 pyramidal structures is lime-ash outlets 10, lime-ash exports 10 sides steam entry 1, and there are thermal insulation layer 9 insulations the fluidized-bed outside.Assisted jet pipe (3) is that adjacent inner layer assisted jet pipe or adjacent outer assisted jet pipe are the equilateral triangle distribution, and each assisted jet tube spacing equates.
After the propellant combination of coal and biomass and portion of air enter fluidized-bed by power stream feed-pipe 2, form solid-fuelled high temperature combustion zone, water vapor enters fluidized-bed through steam entry 1 and internal layer assisted jet pipe 3 respectively, another part air then enters fluidized-bed by outer assisted jet pipe 3, propellant combination is under the effect of water vapor, coal and biomass generation pyrolysis and gasification reaction, synthetic gas and lime-ash at fluidized-bed middle part expanding reach 5 with after fluidized-bed top expanding reach 6 separates, the synthetic gas of carrying ash secretly enters the cyclonic separator 8 in the fluidized-bed top expanding reach 6, synthetic gas after cyclonic separator 8 separates is discharged by the vertical syngas outlet 7 of synthetic gas, and lime-ash is discharged by the lime-ash outlet 10 of fluidized bed body 4 bottoms.
Claims (2)
1, the multi-jet composite fluidized bed gasification installation of a kind of coal and biomass is by fluidized-bed, syngas outlet (7), steam entry (1), jet pipe is formed, it is characterized in that fluidized-bed is by lower bed body (4), middle part expanding reach (5) and top expanding reach (6) three parts are formed, the diameter of middle part expanding reach (5) is bigger than lower bed body (4), the diameter of top expanding reach (6) is bigger than middle part expanding reach (5), a cyclonic separator (8) is arranged in the top expanding reach (6), cyclonic separator (8) top is syngas outlet (7), the tapered structure in lower bed body (4) bottom, jet pipe is divided into power stream feed-pipe (2) and assisted jet pipe (3), pyramidal structure place in lower bed body (4) bottom radially divides the two-layer assisted jet pipe (3) that is equipped with, be at the center of lower bed body (4) bottom and with assisted jet pipe (3) power stream feed-pipe (2) is housed on the same horizontal plane, the bottom of lower bed body (4) pyramidal structure is lime-ash outlet (10), there is steam entry (1) lime-ash outlet (10) side, and there is thermal insulation layer (9) insulation the fluidized-bed outside.
2, a kind of coal as claimed in claim 1 and the multi-jet composite fluidized bed gasification installation of biomass, it is characterized in that described assisted jet pipe (3) is that adjacent inner layer assisted jet pipe or adjacent outer assisted jet pipe are the equilateral triangle distribution, and each assisted jet tube spacing equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610156156 CN100580060C (en) | 2006-12-30 | 2006-12-30 | Multi-jet composite fluidized bed gasification device for coal and biomass |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610156156 CN100580060C (en) | 2006-12-30 | 2006-12-30 | Multi-jet composite fluidized bed gasification device for coal and biomass |
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| Publication Number | Publication Date |
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| CN1974733A true CN1974733A (en) | 2007-06-06 |
| CN100580060C CN100580060C (en) | 2010-01-13 |
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| CN 200610156156 Expired - Fee Related CN100580060C (en) | 2006-12-30 | 2006-12-30 | Multi-jet composite fluidized bed gasification device for coal and biomass |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278742A (en) * | 2010-06-09 | 2011-12-14 | 华北电力大学 | Jet regulated biomass and coal circulating fluidized bed co-combustion device |
| CN102676229A (en) * | 2012-06-07 | 2012-09-19 | 北京华福神雾工业炉有限公司 | Combined rotational flow bed gasification furnace |
| CN103897746A (en) * | 2014-03-13 | 2014-07-02 | 张家港市天源机械制造有限公司 | High temperature dust removal device in biomass gasification furnace |
| CN104178224A (en) * | 2014-08-07 | 2014-12-03 | 新奥科技发展有限公司 | Gas distributor, gasifier and carbon-containing material gasification method |
| CN106010664A (en) * | 2016-06-16 | 2016-10-12 | 新奥科技发展有限公司 | Gasification device of fluidized bed |
| CN106590758A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method for pressurization production of synthetic gas |
| WO2018133304A1 (en) * | 2017-01-22 | 2018-07-26 | 江苏华威机械制造有限公司 | Separation and pyrolysis system |
| CN110791294A (en) * | 2019-10-28 | 2020-02-14 | 北京国电富通科技发展有限责任公司 | Dust collecting and discharging device in pyrolysis furnace |
-
2006
- 2006-12-30 CN CN 200610156156 patent/CN100580060C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278742A (en) * | 2010-06-09 | 2011-12-14 | 华北电力大学 | Jet regulated biomass and coal circulating fluidized bed co-combustion device |
| CN102676229A (en) * | 2012-06-07 | 2012-09-19 | 北京华福神雾工业炉有限公司 | Combined rotational flow bed gasification furnace |
| CN103897746A (en) * | 2014-03-13 | 2014-07-02 | 张家港市天源机械制造有限公司 | High temperature dust removal device in biomass gasification furnace |
| CN104178224A (en) * | 2014-08-07 | 2014-12-03 | 新奥科技发展有限公司 | Gas distributor, gasifier and carbon-containing material gasification method |
| CN106590758A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method for pressurization production of synthetic gas |
| CN106590758B (en) * | 2015-10-15 | 2021-03-30 | 中国石油化工股份有限公司 | Method for producing synthesis gas under pressure |
| CN106010664A (en) * | 2016-06-16 | 2016-10-12 | 新奥科技发展有限公司 | Gasification device of fluidized bed |
| CN106010664B (en) * | 2016-06-16 | 2019-02-05 | 新奥科技发展有限公司 | A kind of fluidized gasification device |
| WO2018133304A1 (en) * | 2017-01-22 | 2018-07-26 | 江苏华威机械制造有限公司 | Separation and pyrolysis system |
| CN110791294A (en) * | 2019-10-28 | 2020-02-14 | 北京国电富通科技发展有限责任公司 | Dust collecting and discharging device in pyrolysis furnace |
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| Publication number | Publication date |
|---|---|
| CN100580060C (en) | 2010-01-13 |
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