CN2382721Y - Heat value gasifying device of biological matter - Google Patents
Heat value gasifying device of biological matter Download PDFInfo
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- CN2382721Y CN2382721Y CN 99212191 CN99212191U CN2382721Y CN 2382721 Y CN2382721 Y CN 2382721Y CN 99212191 CN99212191 CN 99212191 CN 99212191 U CN99212191 U CN 99212191U CN 2382721 Y CN2382721 Y CN 2382721Y
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Abstract
The utility model discloses a heat value gasifying device of biological matter. The utility model is provided with a body section of a gasifying furnace, which is formed by building refractory hollow bricks. The inner part of the body section of the gasifying furnace is hollow and is provided with a stirring rod. The upper end of the body section of the gasifying furnace is provided with a raw material bucket, and the raw material bucket is provided with a feed inlet and a coal gas outlet; the lower end of the body section of the gasifying furnace is provided with a rotary discharging device and a carbocoal box, and the lower end of the carbocoal box is provided with a carbocoal outlet. Hot flue gas produced by combusting carbocoal or combustible gas in a combustion chamber flows upwardly through a flue gas inlet and a flue gas flow passage in the refractory hollow bricks, and is finally discharged from a flue gas outlet. The gasifying device uses the separated design for the combustion chamber and a gasifying chamber, and the heat produced by the combustion chamber is conveyed to the gasifying furnace by a partition wall type heating mode, so the thermal efficiency of the utility model is raised.
Description
The utility model relates to calorific value gasification installation in the biomass.
Biomass energy can be converted in the technological process of multi-form high-quality energy form various, gasification utilization is a kind of comparatively ripe, more potential technology.Because biomass material has very high-volatile, the reactive behavior of biomass coke is also apparently higher than coal tar, thereby is particularly suitable for gasifying process.It is the inflammable gas-coal gas of main component that gasifying process can be converted into biomass material with hydrogen, carbon monoxide, methane, carbonic acid gas, and this gas can be as the geseous fuel effect in suitable extensive fields.
There is more than 750,000 village in the whole nation at present, more than 600,000,000 ton of stalk, if use this technology 1/3 using of the discarded and rice straw that burns in the whole nation, straw at present, can save nearly about 100,000,000 tons soft stalk, but more than 100 hundred million yuan of save energy resources, but about 1.4 hundred million tons of reducing emission of carbon dioxide, 140 tons of sulfurous gas, 1,000,000 tons of flue dust, and can improve the usefulness energy grade in rural area, improve living environment, have considerable energy saving, environmental protection and social benefit.
According to the research of present various countries to gasifying biomass, low-heat value gas gasification scheme is representative with the air gasification technological line.Gasification is to make the part biological raw material burn heat supply and gasifying medium is provided to blast air.This in general technical matters is simple, and the gas production cost is low, but because airborne nitrogen is sneaked in the coal gas inevitably, caloric power of gas can only be remained at low levels, greatly about 3.5～7.8MJ/Nm
3In the scope.This class technological development gets comparatively ripe, but because it can only produce low-heat value gas, has limited application greatly.The low-heat value gas energy content is low, and combustion flame temperature is low, and it is that the power and the load with the equipment of gas of fuel is restricted with it that these defectives can make various; And low heat value can make the conveying of geseous fuel become very uneconomical.Middle calorific value gasifying process route adopts indirect heating or drum oxygen to burn provides gasification institute heat requirement, the coal gas of calorific value in the production.This technology has been got rid of sneaking into of nitrogen in the coal gas, with and make its calorific value can reach 11～20MJ/Nm
3There is not the variety of issue that is run in those low-heat value gas application in this coal gas, thereby has quite wide application prospect.It is complicated that certain this technology is wanted technically.
For replenishing energy deficiency and improving environment is reason, and developing country and developed country have all carried out the Study on Biomass Energy Utilization Technologies and the application of all multipaths, and particularly exploitation has dropped into a large amount of research efforts especially to biomass gasification technology.Agree to have Sweden, the U.S., Italy, Germany of top standard's country etc. in this field.From early eighties, be that the west industrially developed country of representative has just launched large-scale research work in this respect with the U.S..The BTC (Biomass ThermochemicalConversion) that subsidizes in USDOE has proposed the engineering proposal of many gasifying biomass, and has carried out extensive studies with regard to their reliability, economy in the works.And four kinds of more outstanding middle calorific values gasification schemes such as the pressure fluidisation bed gasifying apparatus of the fluidized-bed gasification device of circulating fluidized bed double bed solid thermal carriers gasification installation, inner heat exchanger heat supply, drum oxygen and downdraft drum oxygen fixed-bed gasification have been set up respectively day handled the large-scale experiment industry demonstration project of material quantity in 9～20 tons of scopes.These technical schemes have all experienced the test that works long hours, and function situation is good.The U.S. developed the biomass integrated gasification device one gas turbine generating system suite of equipment that adopts circulating fluidized bed technique in recent years energetically, had realized efficient, the clean utilization of biomass.Recently, a pressurized gasification system is just being built in U.S.'s coal gas technology meeting (IGT) in Hawaii, checking sugarcane gasification technology.
Sweden's industry is flourishing, and the forest reserves are abundant, and the conventional energy resources natural resources shortage so pay much attention to the development and use of biomass energy, encourages to adopt advanced gasification technology, carries out gasifying electricity generation and heat supply etc. to make full use of agroforestry resistates and municipal wastes etc. as raw material.This state scientific research institution has been devoted to circulating fluid bed type vapourizing furnace and the research of pressurized gasification power generation system at present, Bilflwo co-partnership company (comprising Finland, the Ahlstrom of biomass gasifying furnace manufactory) and Sydkrart company (the second largest Utilities Electric Co. of Sweden), build up 6MW gasifying biomass-GTCC district heating thermoelectric power station at Sweden Varnamo at the beginning of 1993, employing be the biomass gasifying furnace of Finland forestry company's T ampella company development.In addition, Canada has put the biological gasification furnace product of some models on market, is fuel with sawmilling, wood chip, paper pulp, shell and grain processing tankage.Produce coal gas, drive the oil engine generating, can reduce generating, can reduce by 50% cost of electricity-generating.
In recent years, developing country is low owing to forest coverage, and biomass are inefficient utilizes waste serious, also begins to pay attention to utilizing the research and extension work of agricultural processing waste utilization gradually.Build up the downdraft gasification installation as Bangladesh and put into operation, India abounds with paddy, just is being devoted to the gasification technology exploitation of rice husk, and Malaysia is with the fixed bed gasification generating, and Thailand is just carrying out and utilizes the fluidized bed combustion research of rice husk for fuel.
Since the eighties, how tame colleges and universities in the whole nation and scientific research institution are obtaining a series of important achievement aspect development biomass gasification technology and the device in succession.Downdraft DN series of biologic matter vapourizing furnace as the exploitation of Chinese agricultural machinery institute is applied to dry tealeaves, timber, feed and heat supply, heating etc., the early 1990s, again according to the market requirement, develops useful small evaporator stove.The Guangzhou energy has been developed the updraft type vapourizing furnace, and gasification principle, material reaction performance etc. has been done a large amount of tests, again the updraft type vapourizing furnace is improved, and is used for boiler heat supplying.Relevant manufacturer production such as Sichuan, Jiangsu a collection of rice husk vapourizing furnace, utilize the rice husk of rice mill to gasify, drive generator for electricity generation, accomplish that resource reclaims, turns waste into wealth.In addition, the Shandong energy is developed the fixed-bed gasification furnace that uses agricultural crop straw (based on cornstalk), and through the pyrolysis aerogenesis, successfully the villager to more than 50 pilot villages serves piped gas.Above-mentioned several form vapourizing furnace all utilizes air gasification to produce 5MJ/Nm
3Left and right sides fuel gas with low heat value.In order to improve calorific value, Guangzhou energy institute, smelting institute of the Chinese Academy of Sciences, Dalian academy of sciences, Zhejiang University etc. have all carried out the ciculation fluidized bed gasification technology research that utilizes biomass energy (based on rice husk) during " eight or five ", adopt pure oxygen or double-fluidized-bed gasification to produce medium calorific value gas, finish the laboratory study stage.But the report that utilizes the rice straw gasification is not also arranged at present.Zhejiang University just is devoted to biomass gasification technology research as far back as beginning in 1988, at the central gas supply system that gasifies of calorific value in the actual kind biomass that proposed suitable different user needs of Chinese countryside, to burn and the gasification combination, produce medium calorific value gas and steam, make that solid and gaseous constituent are rationally utilized the fuel availability height in the fuel.And rice husk rice straw etc. carried out a large amount of basic researchs.
In sum, compare with the developed country biomass gasification technology, China is backward relatively in this respect at present, still rest on a few demonstration unit at present at gasifying biomass aspect the practical application especially, and mainly be on a small scale, the fixed bed type, problems such as it is low to exist fuel gases calorific value, and fuel availability is low, and gas-purification is not thorough, in addition, up to the present, the existing Demonstration Application of China is all at sorghum rod, hard straws such as wood chip are to straw, the application of soft straw such as straw is still blank, main high basic metal easily causes conglomeration in the gasification, and combustion process because contain very in the rice straw, influences system's operation.
The purpose of this utility model provides calorific value gasification installation in a kind of biomass.
The utility model is taked following measures in order to achieve the above object:
The calorific value gasification installation has the vapourizing furnace body section that is built into by refractory, hollow brick in the biomass, its inner hollow, the centre is provided with stirring rod, vapourizing furnace body section upper end is provided with former hopper, former hopper is provided with opening for feed and gas exit, vapourizing furnace body section lower end is provided with drawing mechanism and semicoke case, and semicoke or combustible gas make progress through gas approach and fire-resistant air brick intermediary flue gas flow channel at the hot flue gas that combustion chambers burn produces, and are discharged by exhanst gas outlet at last.
Advantage of the present utility model:
(1) this gasification installation adopts combustion chamber and vaporizer to separate design, mode with the dividing wall type heating is sent the heat that the combustion chamber produces into vapourizing furnace, make raw material generation pyrolytic reaction and produce the middle calorific value of gas that dilutes without air, coal gas enters gas-holder for civilian after simple the purification.The flow direction fundamental sum of coal gas sucking type gasifier unanimity conventionally in the vaporizer, the abundant heat exchange that is beneficial to heating gas and advances the stove cold material, improve system thermal efficiency, also can overcome the high shortcoming of downdraft gasifier tar composition, on the other hand by appropriate design vaporizer structure, make temperature of exit gas be significantly less than conventionally sucking type gasifier level, utilize biomass material self as first step filtration purifier like this, it is higher not only to overcome updraft type gasification furnace gas tar content, the shortcoming of purifying treatment complexity, can also make the tar under self removing enter high temperature section, second pyrolysis is a combustible gas, increase gas yield, reduce CO content, thereby make this scheme have the high advantage of downdraft gasification installation gas yield concurrently;
(2) former hopper height is higher, and gas exit is located at former hopper top, helps the capture and the second pyrolysis of tar;
(3) the vapourizing furnace internal cross section is a rectangle, and thickness is less, can increase the heat transfer area under the equal volume like this, satisfies gasification reaction heat transfer requirement, dwindles the vapourizing furnace volume;
(4) the fuel gas combustion system employing as burning, has following advantage from the middle calorific value of gas of gas storage holder: a) firing system is oversimplified, and does not need complicated combustion chamber and need not external fuel.B) easily be automated, because the gas-fired igniting is fairly simple, time variable control easy to use.C) the generation flue gas is clean, need not the periodic cleaning flue like this and adds complicated flue gas purification system;
(5) gasification stove internal wall is smooth, and inside is provided with stirring rod, helps flowing of material, prevents conglomeration;
(6) have tangible economic benefit and social benefit.
As the middle calorific value biomass gasification device with 1000 family scales is example, can utilize 3500 tons of biomass materials every year, produces 730,000 m
3Coal gas and 1167 tons of semicokes can be saved 1750 tons of standard coals, are equivalent to reduce 52.5 ten thousand yuan Energy resources waste.
Because the continuous development of rural economy, urban residents' cooking is with just developing from low-grade higher-grade, fossil oil such as coal, oil is increasing with the ratio in the energy in the rural area, the demonstration of calorific value gasification technology and applying in the straw, undoubtedly for substituting fossil oil, reduce the environmental pollution that the excessive use because of fossil oil causes.The middle calorific value biomass gasification device of 1000 family scales can reduce discharging about 5000 tons carbonic acid gas, 50 tons sulfurous gas and 35 tons of flue dust, and environmental benefit is very remarkable.
Elaborate below in conjunction with accompanying drawing:
Fig. 1 is a calorific value gasification installation structural representation in the biomass;
Fig. 2 is a calorific value gasification installation structure sectional view in the biomass.
The calorific value gasification installation has the vapourizing furnace body section that is built into by refractory, hollow brick [4] in the biomass, its inner hollow, the centre is provided with stirring rod [9], vapourizing furnace body section upper end is provided with former hopper [10], former hopper is provided with opening for feed [1] and gas exit [2], vapourizing furnace body section lower end is provided with drawing mechanism [7] and semicoke case [6], semicoke or combustible gas make progress through gas approach [5] and fire-resistant air brick [4] intermediary flue gas flow channel at the hot flue gas that combustion chambers burn produces, and are discharged by exhanst gas outlet [3] at last.
During work, biomass material is sent into the former hopper on top by lift, enters vapourizing furnace body section secluding air then and adds thermogenesis raw gas and semicoke.Be provided with stirring rod in the vapourizing furnace body section, play and stir and prevent the conglomeration effect.The gas exit of the raw gas that produces through being located at former hopper top discharged.The drawing mechanism of semicoke through being located at vapourizing furnace body section bottom that produces enters the semicoke case, discharges from the semicoke outlet.Semicoke or combustible gas produce hot flue gas and make progress through gas approach and refractory, hollow brick intermediary flue gas flow channel after combustion chambers burn, discharged by exhanst gas outlet at last.
Claims (1)
1. calorific value gasification installation in the biomass, it is characterized in that it has the vapourizing furnace body section that is built into by refractory, hollow brick [4], its inner hollow, the centre is provided with stirring rod [9], vapourizing furnace body section upper end is provided with former hopper [10], former hopper is provided with opening for feed [1] and gas exit [2], vapourizing furnace body section lower end is provided with drawing mechanism [7] and semicoke case [6], semicoke or combustible gas make progress through gas approach [5] and refractory, hollow brick [4] intermediary flue gas flow channel at the hot flue gas that combustion chambers burn produces, and are discharged by exhanst gas outlet [3] at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212191 CN2382721Y (en) | 1999-05-25 | 1999-05-25 | Heat value gasifying device of biological matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212191 CN2382721Y (en) | 1999-05-25 | 1999-05-25 | Heat value gasifying device of biological matter |
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| Publication Number | Publication Date |
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| CN2382721Y true CN2382721Y (en) | 2000-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 99212191 Expired - Fee Related CN2382721Y (en) | 1999-05-25 | 1999-05-25 | Heat value gasifying device of biological matter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449209C (en) * | 2007-03-16 | 2009-01-07 | 合肥工业大学 | Internal-combustion heating type biomass gasification furnace |
| CN101063039B (en) * | 2006-04-26 | 2011-03-23 | 董久明 | Powder coal grading clean grading utilization technology using thermal dissociation as the first stage |
| CN101307238B (en) * | 2008-01-14 | 2011-11-09 | 张建超 | Biomass gasifying device |
| CN103074115A (en) * | 2013-01-28 | 2013-05-01 | 陈全明 | Device for producing coal gas with sawdust |
| CN105647585A (en) * | 2016-03-21 | 2016-06-08 | 辽宁承天新能源股份有限公司 | Tar-secondary-pyrolysis fixed-bed generator for producing fuel gas from biomass |
-
1999
- 1999-05-25 CN CN 99212191 patent/CN2382721Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063039B (en) * | 2006-04-26 | 2011-03-23 | 董久明 | Powder coal grading clean grading utilization technology using thermal dissociation as the first stage |
| CN100449209C (en) * | 2007-03-16 | 2009-01-07 | 合肥工业大学 | Internal-combustion heating type biomass gasification furnace |
| CN101307238B (en) * | 2008-01-14 | 2011-11-09 | 张建超 | Biomass gasifying device |
| CN103074115A (en) * | 2013-01-28 | 2013-05-01 | 陈全明 | Device for producing coal gas with sawdust |
| CN105647585A (en) * | 2016-03-21 | 2016-06-08 | 辽宁承天新能源股份有限公司 | Tar-secondary-pyrolysis fixed-bed generator for producing fuel gas from biomass |
| CN105647585B (en) * | 2016-03-21 | 2018-03-20 | 辽宁承天新能源股份有限公司 | Secondarily cracking tar fixed bed biomass gas generator |
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| Date | Code | Title | Description |
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| 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 |