CN204039337U - Biomass fluidization flashing speed oven liquefying plant - Google Patents
Biomass fluidization flashing speed oven liquefying plant Download PDFInfo
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- CN204039337U CN204039337U CN201420394155.3U CN201420394155U CN204039337U CN 204039337 U CN204039337 U CN 204039337U CN 201420394155 U CN201420394155 U CN 201420394155U CN 204039337 U CN204039337 U CN 204039337U
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- fluidized bed
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The utility model discloses a kind of biomass fluidization flashing speed oven liquefying plant, and belong to energy technology field, comprise fluidized bed pyrolysis stove, the sidewall of fluidized bed pyrolysis stove is provided with biomass inlet, and bottom is provided with air compartment, and top is provided with exhanst gas outlet; Exhanst gas outlet is connected with gas-solid separator, condenser and gas-holder successively by pipeline, and gas-solid separator bottom is provided with storage charcoal case, and storage charcoal case is connected with the powdered carbon entrance be arranged in fluidized bed pyrolysis furnace sidewall by feeding auger; Also be provided with combustion chamber under fluidized bed pyrolysis stove, the inlet mouth of combustion chamber is connected with gas-holder, and the air outlet of combustion chamber is connected into the air compartment of fluidized bed pyrolysis furnace bottom by pipeline; Described air compartment is also communicated with blast pipe simultaneously, and blast pipe is provided with blower fan.The utility model does not produce secondary pollution, energy-conservation, facility investment is few, reduce production cost, improve biomass thermal transformation efficiency.
Description
Technical field
The utility model belongs to energy technology field, is specifically related to biomass fluidization flashing speed oven liquefying plant.
Background technology
The energy is that modern society depends on for existence and the basis developed.In current China energy structure, more than 85% is the non-renewable fossil oil such as coal, oil, Sweet natural gas, these fossil oils are not only day by day deficient, in the systemic circulation utilized, also serious pollution is caused to environment in its exploitation, therefore, the clean energy seeking reproducible utilization has become the problem that countries in the world are all extremely concerned about.Biomass (comprising various agricultural wastes, the waste of forestry and wood processing industry, waterplant and various organic wastes etc.) are exactly the raw material of the clean energy of the reproducible utilization produced by photosynthesis.Biomass energy technology mainly comprises gasification, combustion power generation, solid fuel and liquefaction etc., gasification, combustion power generation, solid fuel three kinds of technology have reached the commercial level of comparative maturity, but from raising energy density, be convenient to store and transport angularly, biomass resource is converted to liquid (bio oil) then ideal, and, clean bio oil also has low ash content, the features such as low-sulfur, produce obnoxious flavour hardly in combustion, what is more important, the raw material of bio oil is biomass, the zero release of carbonic acid gas can be realized in the great circulation system of biomass economy.Biomass liquefying technical matters can be divided into biochemical process and thermochemical method, and biochemical process mainly refers to that thermochemical method mainly comprises pressurized catalysis liquefaction and rapidly pyrolysing and liquefying etc. by be hydrolyzed or Wood Adhesives from Biomass is alcohol fuel by the means such as fermentation.Biomass fast pyrogenation production bio oil technology is biomass liquefying method the most economic at present.The process system formation of domestic and international research biomass fast pyrogenation communicates substantially, by four major part compositions: the preparation of biomass material, fast pyrogenation, gas solid separation, rapid condensation.But different research and development unit adopts the pyrolysis way and different carrier type of heating that are not quite similar, determines biomass liquefying technological line and there is larger difference.
Biomass pyrolysis liquefaction refers to and under certain temperature (herbaceous biomass about 450 DEG C, ligniform biomass about 550 DEG C) anoxia condition, biomass heated fast is decomposed, and pyrolysis gas obtains the thermochemical study process of product liquid (bio oil) and a part of gaseous product (combustible gas) and solid product (powdered carbon) again through rapid condensation.The factor affecting biomass pyrolytic mainly contains the quenching etc. of heating rate, pyrolysis reaction temperature, gas residence time and pyrolysis high-temperature gas.Under optimum reaction condition, the energy yields sum of three kinds of pyrolysis products is all greater than 100%, and its reason is pyrolytic reaction is thermo-negative reaction, and the heat energy of absorption is that chemical energy has been stored among pyrolysis product.The thermal value of gaseous product is lower, and the flue-gas temperature after burning about 700 DEG C, when taking flue gas as fluidizing medium, the heat brought into can not maintain the temperature needed for fast pyrogenation.Need supplement a small amount of energy, this project has carried out designing cleverly to fluidized-bed pyrolysis oven, can complete the pyrolysis liquefaction of the burning of powdered carbon, the pyrolytic gasification of biomass and biomass.The combustible gas that biomass pyrolytic produces and powdered carbon can be used for the drying of biomass material, also can sell as commercial energy resource.
Fast pyrogenation is the core of native system, and conventional has air flow bed and fluidized-bed.Air flow bed bed material particle diameter is little, and gas velocity is high, has independent bed material heating unit, namely double-fluidized-bed pyrolysis system.Another kind is circulating fluidized bed, and powdered carbon returns burner hearth, take air as fluidizing medium, with combustion heat release while of biomass powder to provide pyrolysis institute energy requirement.What also have produces flue gas for fluidizing medium with the non-condensable gas produced during pyrolysis burning, because quality is not enough, then powdered carbon gasification generation combustible gas is supplemented.Will add water vapour due to during gasification, to such an extent as to have more water in the liquid fuel produced, the thermal value of liquid fuel is lower.
In prior art, CN00235792.5 patent relates to a kind of biological mass pyrogenic liquification apparatus; No. 02270176.1 patent relates to a kind of biomass liquid fuel converter; No. 01134142.4 patent relates to biomass liquefying process and the device of low-cost and pollution-less; Number of patent application 03128901.0 relates to technique and the device thereof of low energy consumption type biomass thermal cracking; CN100387367C patent relates to a kind of processing method and apparatus system thereof of biomass pyrolysis liquefaction.The deficiencies in the prior art are: consume high-grade energy to heat intermediate heat carrier, make liquefaction cost higher, be unfavorable for industrialization; Use nitrogen as carrier gas, make cost up; If the thermal barrier after using is dealt with improperly, easily secondary pollution is caused to environment.
Summary of the invention
The utility model object is to provide a kind of biomass fluidization flashing speed oven liquefying plant.
Based on above-mentioned purpose, the utility model takes following technical scheme:
Biomass fluidization flashing speed oven liquefying plant, comprises fluidized bed pyrolysis stove, and the sidewall of fluidized bed pyrolysis stove is provided with biomass inlet, and bottom is provided with air compartment, and top is provided with exhanst gas outlet; Exhanst gas outlet is connected with gas-solid separator, condenser and gas-holder successively by pipeline, and gas-solid separator bottom is provided with storage charcoal case, and storage charcoal case is connected with the powdered carbon entrance be arranged in fluidized bed pyrolysis furnace sidewall by feeding auger; Also be provided with combustion chamber under fluidized bed pyrolysis stove, the inlet mouth of combustion chamber is connected with gas-holder, and the air outlet of combustion chamber is connected into the air compartment of fluidized bed pyrolysis furnace bottom by pipeline; Described air compartment is also communicated with blast pipe simultaneously, and blast pipe is provided with blower fan.
Preferably, described condenser is shell-and tube condenser, and the leakage fluid dram of condenser is connected with bio oil storage tank.
Preferably, the smoke outlet in described fluidized bed pyrolysis stove is provided with baffle plate, and when preventing pyrolysis gas from being taken out of fluidized bed pyrolysis stove, unburn completely powdered carbon and biomass powder is taken out of fluidized bed pyrolysis stove.
Preferably, described gas-holder is provided with exhaust-valve, after the flammable gas-reservoir in gas-holder is full, opens exhaust-valve, discharges a part of combustible gas, in order to avoid cause gas-holder pressure excessive and generation accident.
Preferably, described gas-solid separator is cyclonic separator.
The beneficial effects of the utility model: the utility model storage charcoal case is connected with the powdered carbon entrance in fluidized bed pyrolysis furnace sidewall by feeding flood dragon, for powdered carbon feeding fluidized bed pyrolysis stove, air outlet, combustion chamber is connected with the air compartment of fluidized bed pyrolysis furnace bottom, air compartment is also communicated with blast pipe simultaneously, fluidized bed pyrolysis stove heat is mainly derived from combustible gas and powdered carbon, and combustible gas and powdered carbon are all the products after biomass pyrolytic, achieve the second stage employ of combustible gas and powdered carbon, save the external energy, do not produce secondary pollution, smoke outlet in fluidized bed pyrolysis stove is provided with baffle plate, when preventing pyrolysis gas from being taken out of fluidized bed pyrolysis stove, unburn completely powdered carbon and biomass is taken out of fluidized bed pyrolysis stove, and flammable gas-reservoir in gas-holder full after, open exhaust-valve, in order to avoid cause gas-holder pressure excessive.In a word, the utility model apparatus structure is simple, operational safety reliably, does not produce secondary pollution, energy-conservation, facility investment is few, reduce production cost, improves the quality (heat conversion raising) of bio oil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of fluidized bed pyrolysis stove in Fig. 1.
Embodiment
Biomass fluidization flashing speed oven liquefying plant, as depicted in figs. 1 and 2, comprise fluidized bed pyrolysis stove 1, the sidewall of fluidized bed pyrolysis stove 1 is provided with biomass inlet 8, bottom is provided with air compartment 13, air compartment 13 top is provided with air distribution plate 11, and fluidized bed pyrolysis stove 1 top is provided with exhanst gas outlet, and smoke outlet is provided with baffle plate 12; Exhanst gas outlet is connected with gas-solid separator, condenser and gas-holder 5 successively by pipeline, gas-solid separator bottom is provided with storage charcoal case 3, storage charcoal case 3 is connected with the powdered carbon entrance 7 be arranged on fluidized bed pyrolysis stove 1 sidewall by feeding auger, and gas-holder 5 is provided with exhaust-valve 15; Fluidized bed pyrolysis stove is also provided with combustion chamber 61 time, and the inlet mouth of combustion chamber 6 is connected with gas-holder 5, and the air outlet of combustion chamber 6 is connected into the air compartment 13 bottom fluidized bed pyrolysis stove 1 by pipeline; Described air compartment 13 is also communicated with blast pipe 14 simultaneously, and blast pipe is provided with blower fan.
Working process: during device start, fluidized bed pyrolysis stove 1 is fed after raw material pulverizing being become particle diameter to be less than or equal to the biomass powder of 3mm, be that fluidizing medium makes biomass powder Thorough combustion with air, fluidized bed pyrolysis stove 1 temperature rises to 600 ~ 650 DEG C, increase biomass powder feeding coal, make the biomass powder incomplete combustion in fluidized bed pyrolysis stove 1, generate pyrolysis gas and powdered carbon, take the pyrolysis gas of generation and powdered carbon out of fluidized bed pyrolysis stove 1, enter cyclonic separator 2 and carry out gas solid separation, powdered carbon after separation is stored in the storage charcoal case 3 of cyclonic separator 2 bottom, pyrolysis gas after separation enters pipe bundle condenser 4 condensation, combustible gas enters gas-holder 5 and stores, bio oil is stored in bio oil storage tank 9, when flammable gas-reservoir in gas-holder 5 is full, start fuel gas burner 10, with the high-temperature flue gas produced for fluidizing medium, flue-gas temperature controls at 680 ~ 720 DEG C, stop air supply simultaneously, feeding biomass powder, biomass powder flashing speed oven, the pyrolysis gas produced is separated, condensation, collect, fluidized bed pyrolysis furnace temperature is lower than 450 ~ 500 DEG C, start air supply, in fluidized bed pyrolysis stove 1, feed the powdered carbon collected simultaneously, continue to make charcoal powder until the temperature in fluidized bed pyrolysis stove 1 rises to 600 ~ 650 DEG C, now start to increase biomass powder feeding coal, enter next cycle operation flow process.Described biomass comprise draft class and wooden class.Draft class flashing speed oven temperature range is 450 ~ 550 DEG C, wooden class flashing speed oven temperature range is 500 ~ 600 DEG C, fluidized bed pyrolysis furnace temperature is prescribed a time limit lower than under biomass flash pyrolysis temperature, (in other words, the minimum flashing speed oven temperature of herbaceous biomass is 450 DEG C, and the minimum flashing speed oven temperature of Wooden Biomass is 500 DEG C) start air supply; The powder that continues to make charcoal is slightly higher than flashing speed oven upper temperature limit to the temperature in fluidized bed pyrolysis stove, (in other words, the highest flashing speed oven temperature of draft biolobic material is 550 DEG C, fluidized bed pyrolysis stove is heated to 600 DEG C, the highest flashing speed oven temperature of lignocellulosic biomass is 600 DEG C, and fluidized bed pyrolysis in-furnace temperature is heated to 600 ~ 650 DEG C).
Utilize aforesaid method and corollary apparatus thereof below, the testing data of material production bio oil of making a living with corn stalk powder and Poplar Powder respectively, as following table 1.
Fluidized bed pyrolysis stove operating parameter: fluidizing velocity is 2m/s, material bed static thickness is 500mm, and be highly 1200mm after material bed fluidisation, fluidizing medium pressure position 8000Pa, fluidizing medium temperature is 650 DEG C, and flue-gas temperature is 650 ~ 700 DEG C, pyrolysis time 1 ~ 2s.
Compare with double-fluidized-bed, decrease heated fluidized bed, the particle diameter of bed material is increased to 5mm by 1mm, and biomass powder increases to 5mm by being less than 1mm, and pulverizing power consumption is original 1/3., because powdered carbon is in same device combustion, reduces powdered carbon consumption 20%.
Claims (5)
1. biomass fluidization flashing speed oven liquefying plant, comprises fluidized bed pyrolysis stove, and the sidewall of fluidized bed pyrolysis stove is provided with biomass inlet, and bottom is provided with air compartment, and top is provided with exhanst gas outlet; Exhanst gas outlet is connected with gas-solid separator, condenser and gas-holder successively by pipeline, and gas-solid separator bottom is provided with storage charcoal case, it is characterized in that: described storage charcoal case is connected with the powdered carbon entrance be arranged in fluidized bed pyrolysis furnace sidewall by feeding auger; Also be provided with combustion chamber under fluidized bed pyrolysis stove, the inlet mouth of combustion chamber is connected with gas-holder, and the air outlet of combustion chamber is connected into the air compartment of fluidized bed pyrolysis furnace bottom by pipeline; Described air compartment is also communicated with blast pipe simultaneously, and blast pipe is provided with blower fan.
2. biomass fluidization flashing speed oven liquefying plant according to claim 1, it is characterized in that: described condenser is shell-and tube condenser, the leakage fluid dram of condenser is connected with bio oil storage tank.
3. biomass fluidization flashing speed oven liquefying plant according to claim 1, is characterized in that: the smoke outlet in described fluidized bed pyrolysis stove is provided with baffle plate.
4. biomass fluidization flashing speed oven liquefying plant according to claim 1, is characterized in that: described gas-holder is provided with exhaust-valve.
5. biomass fluidization flashing speed oven liquefying plant according to claim 1, is characterized in that: described gas-solid separator is cyclonic separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420394155.3U CN204039337U (en) | 2014-07-17 | 2014-07-17 | Biomass fluidization flashing speed oven liquefying plant |
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| CN201420394155.3U CN204039337U (en) | 2014-07-17 | 2014-07-17 | Biomass fluidization flashing speed oven liquefying plant |
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| CN204039337U true CN204039337U (en) | 2014-12-24 |
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| CN201420394155.3U Withdrawn - After Issue CN204039337U (en) | 2014-07-17 | 2014-07-17 | Biomass fluidization flashing speed oven liquefying plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099119A (en) * | 2014-07-17 | 2014-10-15 | 河南省科学院能源研究所有限公司 | Biomass liquefying method adopting fluidized pyrolysis and matched device thereof |
-
2014
- 2014-07-17 CN CN201420394155.3U patent/CN204039337U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099119A (en) * | 2014-07-17 | 2014-10-15 | 河南省科学院能源研究所有限公司 | Biomass liquefying method adopting fluidized pyrolysis and matched device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20151230 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |