CN103666516A - Bio-oil preparation technology - Google Patents
Bio-oil preparation technology Download PDFInfo
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- CN103666516A CN103666516A CN201310735113.1A CN201310735113A CN103666516A CN 103666516 A CN103666516 A CN 103666516A CN 201310735113 A CN201310735113 A CN 201310735113A CN 103666516 A CN103666516 A CN 103666516A
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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 invention belongs to the technical field of fuel oil, particularly relates to a bio-oil preparation technology. The bio-oil preparation technology is characterized in that the technology comprises the following steps: smashing biomass materials; drying; feeding smashed biomass materials to a screw conveyer; feeding the materials into a microwave pyrolysis reactor to be pyrolyzed; performing primary cooling on pyrolyzed products; performing gas-solid separation on high-temperature organic steam produced through pyrolysis in the microwave pyrolysis reactor to remove carbon granules and sand therein; performing secondary cooling and collecting bio-oil; performing third-time cooling and collecting oil with low-boiling point; collecting non-condensed gas for recycling. According to the invention, bio-oil is prepared by adopting the technology, and the biomass materials and carbon residues have good performance on absorbing microwave, so that the microwave heating speed is fast, outside and inside heating can be realized at the same time, and heat conduction is not needed, so that the preparation technology meets the requirements for bio-oil extraction of an optimal process; the requirement of the particle size of raw materials is lowered, so that the cost of pre-treatment is reduced; the pyrolysis temperature can be precisely controlled, and the thermal-inertia is avoided.
Description
Technical field
The invention belongs to oil fuel technical field, be specifically related to a kind of preparation technology of bio-oil.
background technology
Transition exploitation along with fossil energy, the series of problems such as the politics causing in the whole world, energy economy & environment pollution, someone proposes, mankind's energy will turn to " carbohydrate " to rely on from relying on " hydrocarbon polymer ", reason is, the biomass circulating that earth photosynthesis produces is about 95,000,000,000 tons of carbon/years, current hundred million tons of carbon/years of world fossil resource consumption 65-100, as long as have just enough energy utilization of human kind sustainable development of exploitation of 10%, so the DEVELOPMENT PROSPECT of biomass energy is very good.
Under large energy strategy, take electricity as main both end extension, not only to the development of fossil primary energy source, and also the thinking of suitable exploitation kind of oil, should say and meet national policy guiding and mankind's energy development trend, be also the development need of large energy strategy.
From current technical study situation, " carbohydrate " conversion or biomass energy and main raw materials for production thereof have following situation:
Alcohol fuel: application at present more widely starting material is some sugary, starch-containing abundant plants, as corn, sweet sorghum, sucrose, cassava, Ipomoea batatas etc., utilize Mierocrystalline cellulose for raw material, be also in the initial stage, also there is no the commercialization of certain scale, but prospect is extensive.
Biofuel: the organic aliphatic acid Ester that the animal-plant oil of take obtains through transesterification reaction as short chain alcohol, main plant has vegetable seed, cottonseed, the black dregs of rice, oil tea, You Nan, Cortex jatrophae, soybean oil, Oleum Gossypii semen, plam oil, Castor oil, micro-algae and city waste oil etc.
Straw energy conversion: mainly contain the technology such as pyrolytic gasification, dehydrating and curing and anaerobic digestion, can directly be used for generating electricity, generating heat.
Within 1994, United States Government starts to carry out at home using biomass fuel, per gallon alcohol fuel use cost had increased by 50 cents at that time, after several years, along with international oil price rises steadily, and the industrial scale of alcohol fuel constantly expands, its cost is declined, at present started to there is certain competitive power, within 2006, U.S.'s alcohol fuel production capacity is about 1,580 ten thousand tons every year, building 5,550,000 tons every year, within 2007, estimate that ten thousand tons of 2000-2200 are annual, corn mainly be take as raw material in the U.S., in U.S.'s ethanol petrol, ethanol blending ratio major part is about 10%, ethanol petrol accounts for 5% left and right of the whole America gasoline consumption.
Within 2006, U.S.'s biofuel consuming capacity is about 1,610,000 tons/year, throughput is about ten thousand tons/year of 80-96,1 year of 2006 Nian Shi U.S. biofuel fast development, annual growth rate is about 250%, the U.S. is just about 3,000,000 tons/year at the biofuel device capability of planning construction at present, and U.S.'s diesel oil mixed-fuel burning proportion is about 15-20%.
Brazil's alcohol fuel output occupies the second in the world, 2005 annual production 1300 Tol tons, from 1980 to 1998, continuous expansion along with Brazil's production alcohol fuel scale, its cost, from 105 dollars every barrel, drops to 30 dollars every barrel, has had certain market competitiveness, sugarcane mainly be take as raw material in Brazil, and Brazilian gasoline is mixed the proportion of ethanol of burning 20%.
The production thing application of Brazil's biofuel is at the early-stage, and there are the production and construction of 6-7 family in the whole nation, and total capacity is about 100 ten thousand steres, and raw material is mainly used soybean oil, Oleum Gossypii semen, plam oil, Castor oil and city waste oil.
European Union's fuel ethanol production be take beet, corn and wheat as raw material, and only a few countries such as France, Spain is produced.
In Europe, Germany, France are the maximum countries of production biofuel of the European Community, and Germany is biofuel utilization country the most widely.The biofuel production capacity of Germany in 1998 only has 50,000 tons/year, 2004 yearly capacities have reached 1,100,000 tons/year, increase more than 20 times, account for the over half of whole European Union overall throughput, become maximum production of biodiesel state in the world, existing 1800 the oiling portions of Germany supply biofuel in 2004, and every year with 7% speed increment.
China in 2006 alcohol fuel annual production is about ten thousand tons of 100-160, occupies third place in the world, mainly concentrates on four large enterprises, and raw material, with grain in storage for years, corn, sweet sorghum etc., takes fixed point to produce, directed circulation, closed operation.At nine provinces and regions pilot ethanol petrols.
It is annual that China's yield of biodiesel is about ten thousand tons of 30-50, and building, 2,000,000 tons of items are annual, and still 20Duo Jia small business produces at present, and not on a large scale, cost is higher for production line.
Bio-oil (Bio-oil) is a kind of mixture that the various degradation products of Mierocrystalline cellulose, hemicellulose and xylogen form.Biomass mainly comprise that firewood forests, economic forest, Timber stands, agricultural crop straw and agriculture and forestry product residual processing thing are as sweet slag, wood chip etc.
As unique a kind of renewable energy source that can be converted into liquid fuel, biomass are huge with its output, can store and the advantage such as carbon cycle causes global extensive concern.Reproducible biomass resource is converted into clean higher-grade liquid fuel part petroleum replacing; not only can make us break away from the undue dependence to limited petroleum resources; and can significantly reduce the discharge of pollutent and greenhouse gases, and improving environment, protection is ecological.Bio-oil is the mixture of a kind of moisture and complicated oxygen-bearing organic matter, a kind of mixture that the various degradation products of Mierocrystalline cellulose, hemicellulose and xylogen form.Its preliminary market orientation is replacement for heavy, diesel oil and coal tar wet goods.Bio-oil can be used as the fuel use of directly burning, and can be used as oil-firing boiler and Industrial Stoves fuel; Next be after refining processing alternative No. 0 diesel oil as automotive fuel; The 3rd, as industrial chemicals, extract or process various Chemicals as sanitas, food seasoning, out of stock dose of desulfurization, organic fertilizer, glycollic aldehyde, Levoglucosan etc.The factors such as the suitability for industrialized production of bio-oil, consideration starting material, the most suitable 10 kilometers of its cloth point range and scale are radius, 1 Wan Dun factory is set, the oil yield rate of pyrolytic technique bio-oil can reach more than 50% (every 2 tons of stalk oil yield rate >=1 ton bio-oils) at present, product slate approximately 50% bio-oil of three cogeneration facility of this project, about more than 10% inflammable gas (can auxiliary generator group personal), the about solid fertilizer more than 20% (potash fertilizer), be one can comprehensive generation economic benefit scientific and technological environment-friendly type project.The key technique of bio-oil is fast pyrogenation, and this technical know-how is set forth in late 1970s.The agricultural crop straw being about to after crushed quickly heats up to degree more than 500, impels it by macromole pyrolysis fission, to be that small molecules forms oily from steam, then rapid condensation generation bio-oil.
Development Biological Energy Industry must possess resources supplIes, technical qualification and system condition.China's development Biological Energy Industry has huge resource potential.China has a large population, although the grain, oil resource that can be used as bioenergy are seldom, the biomass resource that can be used as bioenergy has huge potentiality.As agricultural crop straw still has 60% to can be used for energy purposes, be roughly equal to 2.1 hundred million tons of mark coals, the undressed utilization of 40% forest exploitation residuum of having an appointment, the existing biomass energy for exploitation at least can reach 4.5 hundred million tons of mark coals, also have an appointment simultaneously 1.33 hundred million hectares should agriculture waste mountain wastes suitable for afforestation, can be for development energy agriculture and energy forestry.Development Biological Energy Industry, utilizes agriculture and forestry organic waste material, develops wasteland suitable for afforestation, cultivates and produces bioenergy resource, has increased peasant's job opportunity.
The research that various countries scientific research personnel prepares bio-oil to quick cracking process is more active, but all rests at present the experimental phase, and the technique that fast pyrolysis legal system adopts for bio-oil at present mainly contains:
Rotation conical reaction process, does not need carrier gas, and biological particles adds rotating cone bottom together with inert heat carrier, in cone wall spiral process, fast pyrolysis reaction occurs, but its maximum feature is that industrial scale is little, and energy consumption is higher;
Carry bed bioreactor, with propane and air, introduce the combustion zone of reaction tubes bottom according to stoichiometric ratio, high-temp combustion gas decomposes biomass rapid heating, but needs the burning gas of a large amount of high temperature and produce the shortcoming that a large amount of non-condensable gases are these devices;
Circulating Fluidized Bed Process, the nitrogen of need to usining carries out fluidisation as carrier gas to the thermophore in equipment and biomass, and nitrogen needs preheating, and consumption is very large, and production cost is very high, and the temperature of whole system is also wayward.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of preparation technology of high-quality bio oil.
The preparation technology of bio-oil of the present invention realizes by following technical scheme:
A preparation technology for bio-oil, this technique comprises following step:
(1) biomass material is ground into powder particle;
(2) dry to the material particles of gained;
(3) dried material is delivered to worm conveyor;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises gradually, biomass temperature in the charing of microwave-heating reactor back segment rises rapidly, reaches the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharges carbon slag;
(5) to the product after cracking, carry out once cooling;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary cooling, biomass collection oil;
(7) to the not noncondensing gas producing in step (6) carry out three times cooling, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
Preferably, in step (1), biomass material is ground into the powder particle that particle diameter is less than 2mm.
Preferably, in above-mentioned step (2), dry to the material particles of gained under the condition of 120-160 ℃.
Preferably, in above-mentioned step (3), the rate of feed of worm conveyor is 30-50kg/h.
Preferably, in above-mentioned step (4), material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 95-120 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 450-550 ℃, reach the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharge carbon slag;
Preferably, above-mentioned step (5) is once cooled to below 200 ℃ the product after cracking.
Preferably, in above-mentioned step (6), the product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil.
Preferably, in above-mentioned step (7), the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collect lower boiling oil.
Biomass material of the present invention is selected from organic waste, as crop stalk, fuel wood, wood-curing waste, fowl and animal excrement, industrial organic wastes, one or more in municipal domestic organic refuse.
In reaction process of the present invention, the control of the temperature in pyrolysis reactor is very important factor, too high or the too low extraction that is all unfavorable for bio oil of pyrolysis temperature, the temperature of above-mentioned several reactors is controlled and is all existed very long temperature control inertia, and microwave-heating reactor can make up above-mentioned defect just, it can control temperature accurately, without thermal inertia, by microwave power setter, the signals collecting of multi-point temperature measurement probe, PLC controller forms close loop control circuit, make the material pyrolysis reactor that speeds away after the temperature in pyrolysis reactor exit reaches best pyrolysis temperature enter carbon slag collection box, it is cooling that the high temperature producing reaches the organic vapor pyrolysis reactor that speeds away, PLC regulates the size of microwave power automatically according to measured temperature simultaneously, for selected feed throughput, make the size of microwave power adjust to optimum value, system reaches a kind of dynamic balance, than the pyrolytic reaction technology of alternate manner, adopting the microwave-heating reaction technology of automatic control mode is power-saving technology truly.
Beneficial effect of the present invention is, adopts above-mentioned technique to prepare bio-oil, and the ability that biomass material and carbon slag absorb microwave is strong especially, thereby microwave heating speed is fast, and inside and outside heating simultaneously, does not need thermal conduction, meets the optimised process requirement that bio-oil extracts; The granularity requirements of raw material is reduced, thereby reduce pretreated cost; Pyrolysis temperature is accurately controlled, and without thermal inertia.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
A preparation technology for bio-oil, this technique comprises following step:
(1) biomass material is ground into the powder particle that particle diameter is 1.5mm left and right;
(2) dry to the material particles of gained under the condition of 150 ℃;
(3) dried material is delivered to worm conveyor, the rate of feed of worm conveyor is 40kg/h;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 100 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 480 ℃, reach the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharge carbon slag;
(5) product after cracking is once cooled to below 200 ℃;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil;
(7) the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
Embodiment 2
A preparation technology for bio-oil, this technique comprises following step:
(1) biomass material is ground into the powder particle that particle diameter is 1mm left and right;
(2) dry to the material particles of gained under the condition of 120 ℃;
(3) dried material is delivered to worm conveyor, the rate of feed of worm conveyor is 30kg/h;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 95 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 475 ℃ of left and right, reach the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharge carbon slag;
(5) product after cracking is once cooled to below 200 ℃;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil;
(7) the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
Embodiment 3
A preparation technology for bio-oil, this technique comprises following step:
(1) biomass material is ground into the powder particle that particle diameter is 2mm left and right;
(2) dry to the material particles of gained under the condition of 160 ℃;
(3) dried material is delivered to worm conveyor, the rate of feed of worm conveyor is 50kg/h;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 120 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 500 ℃ of left and right, reach 485 ℃ of the optimum tempss of biomass produce oil, from the discharge port of microwave-heating reactor, discharge carbon slag;
(5) product after cracking is once cooled to below 200 ℃;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil;
(7) the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
Embodiment 4
A preparation technology for bio-oil, this technique comprises following step:
(1) biomass material is ground into the powder particle that particle diameter is 1.5mm left and right;
(2) dry to the material particles of gained under the condition of 140 ℃;
(3) dried material is delivered to worm conveyor, the rate of feed of worm conveyor is 45kg/h;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 100 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 480 ℃, reach the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharge carbon slag;
(5) product after cracking is once cooled to below 200 ℃;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil;
(7) the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
Claims (8)
1. a preparation technology for bio-oil, is characterized in that, described technique comprises following step:
(1) biomass material is ground into powder particle;
(2) dry to the material particles of gained;
(3) dried material is delivered to worm conveyor;
(4) material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises gradually, biomass temperature in the charing of microwave-heating reactor back segment rises rapidly, reaches the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharges carbon slag;
(5) to the product after cracking, carry out once cooling;
(6) the high temperature organic vapor that in microwave-heating reactor, pyrolysis produces, sends into cyclonic separator by induced draft fan and carries out gas solid separation, removes carbon granules and sand wherein;
(6) product in step (5) is carried out to secondary cooling, biomass collection oil;
(7) to the not noncondensing gas producing in step (6) carry out three times cooling, collect lower boiling oil;
(8) collect the incondensable gas producing in (7), recycle.
2. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, in described step (1), biomass material is ground into the powder particle that particle diameter is less than 2mm.
3. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, in described step (2), dry to the material particles of gained under the condition of 120-160 ℃.
4. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, in described step (3), the rate of feed of worm conveyor is 30-50kg/h.
5. the preparation technology of a kind of bio-oil as claimed in claim 1, it is characterized in that, in described step (4), material is delivered to microwave-heating reactor, after absorbing microwave, temperature rises to 95-120 ℃ gradually, biomass temperature in the charing of microwave-heating reactor back segment rises to rapidly 450-550 ℃, reaches the optimum temps 475-500 ℃ of biomass produce oil, from the discharge port of microwave-heating reactor, discharges carbon slag.
6. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, described step (5) is once cooled to below 200 ℃ the product after cracking.
7. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, in described step (6), the product in step (5) is carried out to secondary and be cooled to below 30 ℃, biomass collection oil.
8. the preparation technology of a kind of bio-oil as claimed in claim 1, is characterized in that, in described step (7), the not noncondensing gas producing in step (6) is carried out being cooled to for three times below 5 ℃, collects lower boiling oil.
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| CN201310735113.1A CN103666516A (en) | 2013-12-27 | 2013-12-27 | Bio-oil preparation technology |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232191A (en) * | 2014-09-05 | 2014-12-24 | 昆明理工大学 | Method for producing bio-oil/diesel oil emulsification fuel by using crofton weed |
| CN104927885A (en) * | 2015-06-04 | 2015-09-23 | 韩新平 | Method for producing charcoal according to microwave technology |
| CN108841442A (en) * | 2018-06-08 | 2018-11-20 | 安徽省宝天农贸有限公司 | A kind of preparation method of high-quality sesame oil |
| CN108865402A (en) * | 2018-06-08 | 2018-11-23 | 安徽省宝天农贸有限公司 | A kind of preparation method of rapeseed oil |
| CN110385087A (en) * | 2019-07-16 | 2019-10-29 | 邱越 | A kind of compound surfactant and its application containing quaternary ammonium salt |
| CN112739457A (en) * | 2018-06-28 | 2021-04-30 | 瑞西纳吉公司 | Microwave process for converting hydrocarbon-based wastes into oil and gas fuels |
| CN117264642A (en) * | 2022-03-28 | 2023-12-22 | 北京丰润铭科贸有限责任公司 | Graded biomass cracking process and device |
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| CN1844317A (en) * | 2006-04-30 | 2006-10-11 | 何仁 | Biomass oil preparing process and device |
| CN101560404A (en) * | 2008-04-15 | 2009-10-21 | 上海鸿泽企业发展有限公司 | Method for preparing biomass oil in microwave thermal decomposition way |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1844317A (en) * | 2006-04-30 | 2006-10-11 | 何仁 | Biomass oil preparing process and device |
| CN101560404A (en) * | 2008-04-15 | 2009-10-21 | 上海鸿泽企业发展有限公司 | Method for preparing biomass oil in microwave thermal decomposition way |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232191A (en) * | 2014-09-05 | 2014-12-24 | 昆明理工大学 | Method for producing bio-oil/diesel oil emulsification fuel by using crofton weed |
| CN104232191B (en) * | 2014-09-05 | 2016-06-08 | 昆明理工大学 | A kind of method utilizing Hemp Eupatorium production bio oil/Diesel Oil Emulsified Fuel |
| CN104927885A (en) * | 2015-06-04 | 2015-09-23 | 韩新平 | Method for producing charcoal according to microwave technology |
| CN108841442A (en) * | 2018-06-08 | 2018-11-20 | 安徽省宝天农贸有限公司 | A kind of preparation method of high-quality sesame oil |
| CN108865402A (en) * | 2018-06-08 | 2018-11-23 | 安徽省宝天农贸有限公司 | A kind of preparation method of rapeseed oil |
| CN112739457A (en) * | 2018-06-28 | 2021-04-30 | 瑞西纳吉公司 | Microwave process for converting hydrocarbon-based wastes into oil and gas fuels |
| CN110385087A (en) * | 2019-07-16 | 2019-10-29 | 邱越 | A kind of compound surfactant and its application containing quaternary ammonium salt |
| CN110385087B (en) * | 2019-07-16 | 2021-06-15 | 邱越 | Compound surfactant containing quaternary ammonium salt and application thereof |
| CN117264642A (en) * | 2022-03-28 | 2023-12-22 | 北京丰润铭科贸有限责任公司 | Graded biomass cracking process and device |
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Application publication date: 20140326 |