CN109536194B - Preparation method of biofuel - Google Patents
Preparation method of biofuel Download PDFInfo
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- CN109536194B CN109536194B CN201710857833.3A CN201710857833A CN109536194B CN 109536194 B CN109536194 B CN 109536194B CN 201710857833 A CN201710857833 A CN 201710857833A CN 109536194 B CN109536194 B CN 109536194B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/08—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal with moving catalysts
- C10G1/083—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal with moving catalysts in the presence of a solvent
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/002—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal in combination with oil conversion- or refining processes
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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
Abstract
The invention relates to the field of biofuel preparation, and discloses a method for preparing biofuel, wherein the method comprises the steps of degrading a lignocellulose raw material in the presence of a catalyst to obtain an aldehyde group-containing compound, and reacting the aldehyde group-containing compound with lower aliphatic alcohol to obtain the biofuel. The method can prepare the biofuel oil by a one-pot method, reduce the production cost and simultaneously solve the problem of complicated operation in the process of preparing the biofuel.
Description
Technical Field
The invention relates to the field of preparation of biofuel, relates to a preparation method of biofuel, and particularly relates to a method for preparing biofuel from a lignocellulose raw material.
Background
The fuel oil processed by fossil fuels such as petroleum, coal and the like has the advantages of easy utilization, extraction and processing. However, fossil fuels have limitations of being non-renewable and resource limited. Therefore, the renewable biomass has wide application prospect.
As a clean energy source with wide and renewable sources, biomass is increasingly paid more attention by people with the increasing emphasis on energy and environmental problems. Currently, sucrose is converted to ethanol by fermentation, and then the fuel ethanol used as biofuel is extracted by distillation. The fuel ethanol or the gasoline or diesel oil added with part of the fuel ethanol has good effect of reducing exhaust pollution; meanwhile, the fuel can partially replace fossil fuel. However, fermentation and distillation are required throughout the processing and production of fuel ethanol, and thus, a very large amount of fossil or plant fuel is consumed to produce fuel ethanol. Therefore, the fuel ethanol has the defects of high price and large energy consumption in the production process, and a new effective method for converting the biomass into the vehicle fuel oil needs to be researched.
The biomass is converted into liquid fuel through a direct liquefaction process, the utilization rate of the biomass can be effectively improved, and the process route and the selection of the catalyst are indispensable parts in the liquefaction process. Dumesic and its partners propose, on Nature 447 (2007) 982), the conversion of fructose to HMF and then to a series of furan ring substituents and tetrahydrofuran compounds. Conrad Zhang, haibo Zhao in "Metal Chlorides in Long Liquid solutions converter to 5-hydroxymethyifurfural" (Science, 316,1597 (2007) 1597-1600) first introduced that ionic Liquid catalysts are capable of efficiently converting 70% of glucose and nearly 90% of fructose to Hydroxymethylfurfural (HMF), leaving only trace amounts of acidic impurities. Mark Mass and Edward B.Nikitin in Direct, high-Yield Conversion of Cellulose to biofuels (Angew. Chem. Int. Ed.47 (2008) 1-4) described the biomass hydrolysate to react under the catalysis of lithium chloride to generate a series of furan ring products, the Yield of which reaches 91%.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a preparation method of bio-fuel oil, which can be used for preparing the bio-fuel oil by a one-pot method, thereby reducing the production cost and simultaneously solving the problem of complex operation in the process of preparing the bio-fuel oil.
In order to achieve the above object, the present invention provides a method for preparing biofuel, wherein the method comprises degrading a lignocellulosic raw material in the presence of a catalyst to obtain an aldehyde group-containing compound, and reacting the aldehyde group-containing compound with a lower aliphatic alcohol to obtain biofuel.
Preferably, the catalyst is selected from one or more of metal chlorides, imidazolium chloride ionic liquids, organic acids and inorganic acids.
Preferably, the metal element in the metal chloride is selected from one or more of group IA, group IIIA, group IVA, group IB, group IIB, group VIB and group VIII metal elements; more preferably, the metal chloride is selected from KCl, naCl, liCl, inCl, cuCl 2 、ZnCl 2 、SnCl 2 、CrCl 2 、CrCl 3 And FeCl 3 One or more of (a).
Preferably, the imidazolium chloride ionic liquid is selected from one or more of 1-methyl-3-methylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium chloride and 1-hexyl-3-methylimidazolium chloride; more preferably, the imidazolium chloride-based ionic liquid is selected from 1-ethyl-3-methylimidazolium chloride and/or 1-butyl-3-methylimidazolium chloride.
Preferably, the organic acid is selected from one or more of formic acid, acetic acid, propionic acid and succinic acid.
Preferably, the inorganic acid is selected from one or more of sulfuric acid, hydrochloric acid, boric acid, phosphoric acid, carbonic acid and citric acid.
Preferably, the catalyst is used in an amount of 0.01 to 0.4 parts by weight relative to 1 part by weight of the lignocellulosic feedstock.
Preferably, the reaction is carried out in the presence of an organic solvent selected from one or more of dichloroethane, dimethyl sulfoxide, N-dimethylacetamide, N-dimethylformamide, 1,4-butanediol, and N-butanol; more preferably, the organic solvent is selected from dichloroethane and/or dimethyl sulfoxide.
Preferably, the solvent is used in an amount of 5 to 20 parts by weight, relative to 1 part by weight of the lignocellulosic feedstock.
Preferably, the lower aliphatic alcohol is one or more of methanol, ethanol, propanol and butanol, preferably methanol; more preferably, the lower aliphatic alcohol is used in an amount of 1 to 4 parts by weight relative to 1 part by weight of the lignocellulosic feedstock.
Preferably, the method comprises comminuting the lignocellulosic feedstock and mixing with an organic solvent prior to reacting.
Preferably, the reaction conditions include: the temperature is 60-100 ℃;
preferably, the reaction is carried out under reflux conditions.
Preferably, the method further comprises distilling the product obtained by the reaction, and collecting the fraction at 60-450 ℃ as the biofuel oil.
The invention also provides the biofuel oil prepared by the method.
Through the technical scheme, the invention adopts the process of continuously reacting the lower aliphatic alcohol (such as methanol) with one step, has simple process route, mild condition, low operation temperature and high yield, avoids a large amount of energy consumed by multi-step reaction in the production process of the bio-oil, and reduces the production cost. The heat value of the biofuel prepared by the method is equivalent to that of the biodiesel prepared by the conventional method. Compared with the traditional biological energy utilization method, the method is more convenient for large-scale chemical production and is an effective way for high-value utilization of biomass.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The preparation method of the biofuel oil comprises the steps of degrading lignocellulose raw materials in the presence of a catalyst to obtain an aldehyde group-containing compound, and reacting the aldehyde group-containing compound with lower aliphatic alcohol to obtain the biofuel oil.
In the present invention, the lignocellulose raw material refers to biomass, and may be crop waste, wood waste, and the like, and specifically may include rice hulls, corn stalks, wheat stalks, sorghum stalks, wood chips, coconut shells, walnut shells, pruned branches of fruit trees, fallen leaves, and other garden wastes, chinese herbal medicine component extraction residues, and the like. The lignocellulose raw material has a cellulose content of 20 wt% or more, more preferably 30 wt% or more, and still more preferably 40 wt% or more. Specific examples of the cellulose content of the lignocellulosic raw material include: 20, 25, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, or 50 wt%, etc.
In the present invention, the aldehyde group-containing compound obtained by the reaction of the lignocellulose raw material is not particularly limited, but is preferably an aldehyde group-containing compound having a relatively small molecular weight (for example, 400 or less, preferably 200 or less), and examples thereof include furfural and 5-hydroxymethylfurfural. Then the aldehyde group-containing compound and lower aliphatic alcohol are subjected to an acetal reaction to obtain the biofuel oil.
In order to ensure the smooth progress of the reaction, the catalyst is selected from one or more of metal chloride, imidazolium chloride ionic liquid, organic acid and inorganic acid.
According to the invention, the metal element in the metal chloride can be selected from one or more of metals in groups IA, IIIA, IVA, IB, IIB, VIB and VIII. Examples thereof include KCl, naCl, liCl, inCl and CuCl 2 、ZnCl 2 、SnCl 2 、CrCl 2 、CrCl 3 And FeCl 3 One or more of (a). More preferably, the metal chloride is selected from one or more of KCl, naCl, liCl, inCl.
According to the invention, the imidazolium chloride ionic liquid is selected from one or more of 1-methyl-3-methylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium chloride and 1-hexyl-3-methylimidazolium chloride; more preferably, the imidazolium chloride-based ionic liquid is selected from 1-ethyl-3-methylimidazolium chloride and/or 1-butyl-3-methylimidazolium chloride.
According to the invention, the organic acid is selected from one or more of formic acid, acetic acid, propionic acid and succinic acid; the inorganic acid is selected from one or more of sulfuric acid, hydrochloric acid, boric acid, phosphoric acid, carbonic acid and citric acid, and more preferably from one or more of sulfuric acid, hydrochloric acid and boric acid.
By using the catalyst, the reaction of the invention can be completed under mild conditions to obtain the biofuel oil. Under the action of the catalyst, the lignocellulose raw material is effectively decomposed into compounds containing aldehyde groups, and the compounds further react with the lower fatty alcohol to obtain the biofuel oil, so that the operation process is simplified, and the yield of the biofuel oil can be improved.
According to a preferred embodiment of the invention, the catalyst contains both a metal chloride and an imidazolium chloride based ionic liquid. The catalyst contains metal chloride and imidazole chloride ionic liquid at the same time, so that the yield and the calorific value of the biofuel oil product can be further improved. Wherein, the weight ratio of the metal chloride to the imidazolium chloride ionic liquid can be 1:2-10, preferably 1:5-8. The above weight ratio includes 1: 2. 1: 3. 1: 4. 1: 5. 1: 6. 1:7 or 1:8.
according to a further preferred embodiment of the present invention, the catalyst contains both a metal chloride, an imidazolium chloride-based ionic liquid and an inorganic acid. The catalyst contains metal chloride, imidazolium chloride ionic liquid and inorganic acid, so that the reaction speed, the yield of the biofuel oil product and the heat value can be further improved. Wherein, the weight ratio of the metal chloride, the imidazolium chloride ionic liquid and the inorganic acid can be 1:2-10:2-10, preferably 1:5-8:4-6. The weight ratio of the metal chloride to the inorganic acid may be, for example, 1: 2. 1: 3. 1: 4. 1: 5. 1: 6. 1: 7. 1:8. 1:9 or 1:10. the weight ratio of the metal chloride to the imidazolium chloride-based ionic liquid is, for example, 1: 2. 1: 3. 1: 4. 1: 5. 1: 6. 1: 7. 1:8. 1:9 or 1:10.
according to the present invention, in order to increase the rate of the reaction and ensure sufficient reaction of the lignocellulosic feedstock, it is preferred that the catalyst is used in an amount of 0.01 to 0.4 parts by weight, more preferably 0.02 to 0.1 parts by weight, for example 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.12, 0.14, 0.16, 0.18, 0.2, 0.25, 0.3, 0.35 or 0.4 parts by weight, relative to 1 part by weight of the lignocellulosic feedstock. Wherein, when organic acid and/or inorganic acid is used, the catalyst is used based on the weight of the organic acid and/or inorganic acid solution.
According to the invention, the lower aliphatic alcohol is one or more of methanol, ethanol, propanol and butanol. From the viewpoint of economy, methanol is preferred.
According to the present invention, the amount of the lower aliphatic alcohol to be used may be appropriately adjusted depending on the reaction product and the like. Preferably, the lower aliphatic alcohol is used in an amount of 1 to 4 parts by weight, more preferably 1.5 to 2 parts by weight, relative to 1 part by weight of the lignocellulosic feedstock.
According to the present invention, in order to increase the lignocellulose degradation efficiency and the aldol condensation/semi-condensation reaction rate, it is preferable that the reaction is carried out in the presence of an organic solvent. The organic solvent may be selected from one or more of dichloroethane, dimethyl sulfoxide, N-dimethylacetamide (DMAc), N-Dimethylformamide (DMF), 1,4-butanediol, and N-butanol; preferably, the organic solvent is selected from dichloroethane and/or dimethyl sulfoxide. By using the organic solvent, the effect of improving the yield of the biofuel can be achieved.
According to the invention, the solvent is used in an amount of 5 to 20 parts by weight, preferably 8 to 15 parts by weight, relative to 1 part by weight of the lignocellulosic feedstock.
In the present invention, in order to sufficiently react the lignocellulosic feedstock and improve the efficiency of the reaction, the method further comprises: prior to the reaction, the lignocellulosic feedstock is comminuted and mixed with water. The pulverization method includes, but is not limited to, grinding, cutting, compressing, etc., and may be performed using a hammer mill, a drum mill, a stirring mill, a ball mill, etc. By the above-mentioned pulverization treatment, the particle size of at least 80% by weight of the lignocellulosic raw material becomes 40 mesh or less, and preferably the particle size of at least 90% by weight of the raw material becomes 40 mesh or less. The lignocellulose raw material is crushed, so that reactants are fully contacted with the catalyst, and the reaction is promoted.
In the present invention, the step of reacting the lignocellulose raw material to obtain the aldehyde group-containing compound (step I) and the step of reacting the aldehyde group-containing compound with the lower aliphatic alcohol to obtain the biofuel oil (step II) are not particularly limited in their manner of implementation, and may be performed separately or simultaneously. Preferably, the steps I and II are carried out simultaneously, that is, the steps I and II are carried out in the same reactor, that is, under the condition that the lignocellulose raw material, the catalyst and the lower fatty alcohol exist simultaneously, the lignocellulose raw material is firstly reacted to obtain the aldehyde group-containing compound, and then the obtained aldehyde group-containing compound is reacted with the lower fatty alcohol to obtain the biofuel oil. By simultaneously carrying out the step I and the step II, the operation of the reaction can be further simplified, and the step of obtaining the biofuel oil by the reaction of the lignocellulose raw material can be realized only by one step.
According to the present invention, the reaction conditions of the present invention are not particularly limited as long as lignocellulose can be reacted to give a compound containing aldehyde groups and reacted with a lower aliphatic alcohol. For example, the reaction conditions may include: the temperature is 60-100 deg.C, preferably 70-95 deg.C, and specifically 80-95 deg.C; the reaction time may be 10 hours or more, more preferably 15 to 40 hours, and particularly 20 to 30 hours. The method can be carried out under mild reaction conditions, so that the energy consumption of the reaction is reduced, and the method is more economic and environment-friendly.
According to the present invention, the reaction is carried out in a manner not particularly limited, and may be carried out in a manner generally used for the reaction under the above-mentioned conditions, and preferably under reflux conditions.
According to the invention, after the reaction is finished, the biofuel oil can be obtained by separating the oil phase through liquid separation, and the biofuel oil can be directly used as fuel oil. Although the biofuel obtained as described above may contain impurities such as solvents and unreacted lower aliphatic alcohols, it is preferable that the biofuel obtained by the above-described separation is further purified, and specifically, the product obtained by the reaction is distilled and a fraction at 60 to 450 ℃ is collected as the biofuel, although the progress of combustion is not affected. When the reaction is carried out in the presence of an organic solvent, the above distillation operation is preferably carried out, so that the calorific value of the resulting biofuel can be increased.
The biofuel oil obtained by the method comprises gasoline, diesel oil and kerosene fractions, has the heat value of 11.6-23.5MJ/kg, can replace the diesel oil, and is convenient for industrial large-scale production.
The equipment used in the process of the present invention is not particularly limited as long as it ensures that the lignocellulosic feedstock is reacted under the conditions described above. The apparatus used in the method of the present invention may include a mixing-stirring chamber for mixing the reaction raw material, the organic solvent, the catalyst, and the like, to promote the reaction. Specifically, the reaction raw materials, the organic solvent, the catalyst, and the like may be placed in the above-mentioned mixing-stirring chamber as needed, and the reaction may be carried out under reaction conditions while continuously mixing the materials. After the reaction is finished, standing at constant temperature for layering, separating the oil phase after each phase is clear to obtain the biofuel oil, and further distilling and purifying the oil phase according to the requirement.
The present invention will be described in detail below by way of examples. In the following examples, calorific value was measured by the method of GB384-81 Petroleum products calorific value measurement method; the crushed biomass is corn straw, and the granularity is 40-60 meshes after crushing.
Example 1
4g of a catalyst solution (containing 0.4g of lithium chloride as a catalyst, 1g of 36 mass% concentrated hydrochloric acid, and the balance deionized water), 16g of methanol, 30g of dimethyl sulfoxide as an organic solvent, and 10g of pulverized biomass were reacted at 70 ℃ for 20 hours under reflux conditions at room temperature. And standing, separating liquid and taking an oil phase after the reaction is finished, distilling the oil phase under reduced pressure, and collecting fractions at the temperature of 60-450 ℃ to obtain the biofuel oil product.
After analysis, the following results are obtained: the yield of the product is 52.5 percent, and the calorific value is 11.6MJ/kg.
Example 2
A biofuel was prepared as in example 1, except that a catalyst solution containing 0.2g of lithium chloride and 0.8g of 1-butyl-3-methylimidazole chloride was used; 1,2-dichloroethane was used as the organic solvent instead of dimethyl sulfoxide and reacted at 70 ℃ for 30 hours.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 74.6 percent, and the calorific value is 23.4MJ/kg.
Example 3
A biofuel oil was prepared by following the procedure of example 1 except that a catalyst solution containing indium chloride 0.1g, 1-ethyl-3-methylimidazole chloride 0.4g, and concentrated hydrochloric acid 36% (wt) 0.5g was used; 20g of methanol was used.
After analysis, the following results are obtained: the yield of the obtained biofuel product is 78.1 percent, and the calorific value is 26.1MJ/kg.
Example 4
A biofuel was prepared as in example 1, except that 2g of a catalyst solution containing 0.2g of cupric chloride, 1g of a 10% (wt) sulfuric acid solution, and the balance of deionized water was used.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 56.2 percent, and the calorific value is 20.9MJ/kg.
Example 5
A biofuel was prepared as in example 1, except that 0.3g of a catalyst solution containing 0.1g of lithium chloride and 0.2g of a 20% (wt) hydrochloric acid solution was used.
And (3) obtaining by analysis: the yield of the obtained biofuel product is 67.5 percent, and the calorific value is 23.5MJ/kg.
Example 6
A biofuel oil was prepared by following the procedure of example 3 except that a catalyst solution containing 0.1g of indium chloride and 0.4g of 1-ethyl-3-methylimidazolium chloride was used in the absence of concentrated hydrochloric acid.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 65.1 percent, and the calorific value is 21.5MJ/kg.
Example 7
A biofuel oil was prepared by following the procedure of example 3 except that a catalyst solution containing indium chloride 0.1g, 36% (wt) concentrated hydrochloric acid 0.5g, and no 1-ethyl-3-methylimidazolium chloride was used.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 38.32 percent, and the calorific value is 15.3MJ/kg.
Example 8
Biofuel oil was prepared according to the procedure of example 3, except that the catalyst solution containing 1-ethyl-3-methylimidazolium chloride 0.4g and not containing indium chloride and concentrated hydrochloric acid was used.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 12.2 percent, and the calorific value is 12.54MJ/kg.
Example 9
Biofuel oil was prepared according to the procedure of example 3, except that 0.1g of indium chloride was used as the catalyst solution, and 1-ethyl-3-methylimidazolium chloride and concentrated hydrochloric acid were not contained.
After analysis, the following results are obtained: the yield of the obtained biofuel oil product is 8.21 percent, and the calorific value is 10.21MJ/kg.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (11)
1. A method for preparing biofuel, characterized in that, the method comprises: degrading a lignocellulose raw material to obtain an aldehyde group-containing compound in the presence of the lignocellulose raw material, a catalyst and lower aliphatic alcohol at the same time, and reacting the aldehyde group-containing compound with the lower aliphatic alcohol to obtain the biofuel oil;
wherein the catalyst contains metal chloride, imidazolium chloride ionic liquid and inorganic acid; the metal chloride is indium chloride; the imidazolium chloride ionic liquid is 1-ethyl-3-methylimidazolium chloride; the inorganic acid is concentrated hydrochloric acid; the weight ratio of the metal chloride to the imidazolium chloride ionic liquid to the inorganic acid is 1:4-8:4-6; the amount of the catalyst is 0.01-0.4 parts by weight relative to 1 part by weight of the lignocellulosic feedstock;
the lower aliphatic alcohol is used in an amount of 1 to 4 parts by weight relative to 1 part by weight of the lignocellulosic raw material;
the reaction temperature is 60-100 ℃.
2. The process of claim 1, wherein the catalyst further comprises an organic acid.
3. The process of claim 2, wherein the organic acid is selected from one or more of formic acid, acetic acid, propionic acid, and succinic acid.
4. The process of claim 1, wherein the reaction is carried out in the presence of an organic solvent selected from one or more of dichloroethane, dimethyl sulfoxide, N-dimethylacetamide, N-dimethylformamide, 1,4-butanediol, and N-butanol.
5. The process according to claim 4, wherein the organic solvent is selected from dichloroethane and/or dimethyl sulfoxide.
6. The method according to claim 4, wherein the organic solvent is used in an amount of 5 to 20 parts by weight relative to 1 part by weight of the lignocellulosic raw material.
7. The method of claim 1, wherein the lower aliphatic alcohol is one or more of methanol, ethanol, propanol, and butanol.
8. The method of claim 7, wherein the lower aliphatic alcohol is methanol.
9. The method according to any one of claims 4-6, wherein the method comprises comminuting the lignocellulosic feedstock and mixing with an organic solvent prior to degradation of the lignocellulosic feedstock.
10. The process of claim 9, wherein the reaction is carried out under reflux conditions.
11. The method as claimed in any one of claims 1 to 8, wherein the method further comprises distilling the product obtained from the reaction and collecting a fraction at 60 to 450 ℃ as the biofuel oil.
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| CN106669655A (en) * | 2016-11-01 | 2017-05-17 | 华东理工大学 | Preparation method of solid acid catalyst for preparing 5-hydroxymethylfurfural from biomass |
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| CA2726126C (en) * | 2008-06-17 | 2018-07-17 | Wisconsin Alumni Research Foundation | Chemical transformation of lignocellulosic biomass into fuels and chemicals |
| CN102050806B (en) * | 2010-11-24 | 2014-01-22 | 李韡 | Method for preparing product containing 5-hydroxymethyl furfural from lignocellulose |
| UA116630C2 (en) * | 2012-07-03 | 2018-04-25 | Ксілеко, Інк. | METHOD OF CONVERTING SUGAR TO FURFURYL ALCOHOL |
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| CN101434589A (en) * | 2007-11-14 | 2009-05-20 | 中国科学院大连化学物理研究所 | Method for preparing 5-hydroxymethyl furfural from fructose source biomass |
| CN106669655A (en) * | 2016-11-01 | 2017-05-17 | 华东理工大学 | Preparation method of solid acid catalyst for preparing 5-hydroxymethylfurfural from biomass |
Non-Patent Citations (1)
| Title |
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| Direct, High-Yield Conversion of Cellulose into Biofuel;Mark Mascal* and Edward B. Nikitin;《Angewndte Chemie International Edition》;20080801;第8042–8044页 * |
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