CN104804878A - Novel fatty acid methyl ester biodiesel production technology - Google Patents
Novel fatty acid methyl ester biodiesel production technology Download PDFInfo
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- CN104804878A CN104804878A CN201410037900.3A CN201410037900A CN104804878A CN 104804878 A CN104804878 A CN 104804878A CN 201410037900 A CN201410037900 A CN 201410037900A CN 104804878 A CN104804878 A CN 104804878A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/04—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fats or fatty oils
- C11C3/10—Ester interchange
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
- C10L2200/0461—Fractions defined by their origin
- C10L2200/0469—Renewables or materials of biological origin
- C10L2200/0476—Biodiesel, i.e. defined lower alkyl esters of fatty acids first generation biodiesel
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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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- Life Sciences & Earth Sciences (AREA)
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- Fats And Perfumes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
The invention discloses a novel fatty acid methyl ester biodiesel production technology. The technology comprises the following steps: 1, selecting raw materials; 2, mixing the raw materials, and carrying out a reaction on the raw materials; 3, adding dimethyl ether and solvent oil; and 4, separating to obtain a product. Fatty acid methyl ester biodiesel can be produced through the above steps. The technology has the following advantages: methanol and dimethyl ether are adopted as a cosolvent, and 0.1% of a catalyst is added, so the reaction pressure and the reaction temperature are reduced, thereby the apparatus investment of a reaction system is greatly reduced, the volume and the investment of a reactor are greatly reduced, and energy consumption in the production process is reduced; and the catalyst is oil, and the amount of the catalyst is 0.1%, so a subsequent separating process after the reaction is simple, pollution to environment is avoided, and the quality of the product is improved.
Description
Technical field
The present invention relates to the production technical field of biofuel, particularly relate to a kind of production technique of novel fatty acid methyl esters biofuel.
Background technology
Using and preparing of domestic and international biofuel mainly experienced by following four-stage.
1, natural fats and oils is directly used in combination
At the biofuel research initial stage, people directly use crude vegetal or by natural fats and oils and diesel oil, solvent or alcohols mixing, to reduce its viscosity, improve volatility.1900, vegetables oil (peanut oil) was directly used in the diesel motor that he invents by Rudoiph. Qiu Saier the earliest.In order to reduce plant oil viscosity, soybean oil and diesel oil mix as diesel engine fuel oil in nineteen eighty-three again by Amars etc., and carry out the test of 600 hours on direct injection turbine engine.When two kinds of oil products mix with 1.0:1.0, there will be lubricating oil and become muddy and gel phenomenon, and during 1:2, there will not be this phenomenon, can short-term as the greedyization fuel of farm machinery.Sunflower seed oil mixes with the volume ratio of 1:3 with diesel oil by Ziejiewski etc., record the kinematic viscosity of this mixture at 40 DEG C and exceed the highest movement viscosity that American society (ASTM) specifies, so this propellant combination is not suitable for using for a long time in direct injection diesel engine.
The high viscosity of vegetables oil, and the gel formed storing and be polymerized because of oxidation in combustion processes, deposition of carbon and lubricating oil viscosity increase etc. are all inevitable serious problems.Practice illustrates, directly transforms or no matter diesel oil that blending means is obtained directly or indirectly uses on diesel engine with vegetables oil, is all unpractiaca.
2, microemulsion method
In order to solve the full-bodied problem of natural fats and oils, vegetable and animals oils and solvent are made microemulsion by people.Microemulsion by the compositions such as water, oil, tensio-active agent spontaneous in the proper ratio formed transparent, translucent stabilising system, its dispersion particle is minimum, generally at 0.01-0.2MM.
In the evolution of biofuel, multidigit researchist is to this has been research.
Nineteen eighty-two, aqueous ethanolic solution and the soybean oil such as Georing have made microemulsion, and this microemulsion is except cetane value is lower, and other performances are all similar to 2# diesel oil
Ziejiewski etc. with 53.3% winterization sunflower seed oil, the methyl alcohol of 13.3% and the n-butyl alcohol of 33.4% make microemulsion, in the laboratory durability test of 200 hours, the problem having occurred carbon deposit He lubricating oil viscosity is increased
Neuma etc. use tensio-active agent, and (main component is that soya-bean oil soap makes, dodecyl sodium carbonate and fatty acid ethanolamide amine), (composition is ethanol to cosurfactant, propyl alcohol with different become alcohol, water, diesel oil and soybean oil are raw material, developing can the new Microemulsion System of conversion diesel, its character and diesel oil are very close, microemulsion makes the viscosity of biofuel decrease, burn more abundant, improve efficiency of combustion, but cetane value is also on the low side, in laboratory scale endurance test, find syringe needle often sticky letter, carbon deposit is serious, incomplete combustion.
3, pyrolysis method
Pyrolysis method makes a kind of Substance Transformation become the process of another kind of material under heat and catalyst action.Due to the variation of reaction path and reaction product, heat scission reaction is difficult to quantize, and triacylglycerol thermo-cracking can give birth to a series of mixture, comprises alkane, alkene, diolefine, aromatic hydrocarbons and hydroxy acid etc.But that the feature of this technique is process is simple, pollute and littlely need high temperature and catalyzer, cause energy consumption high and cracking apparatus is expensive, its degree be difficult to control, simultaneously, when in cleavage mixture, when water, throw out and copper corrosion value are in specialized range, its ash content, breeze and cloud point are just beyond prescribed value.
4, esterification process
Esterification process take lipid acid as raw material, and lipid acid and methyl alcohol esterification occur under an acidic catalyst condition and makes fatty acid methyl ester (biofuel), but the lipid acid of high price substantially increases the production cost of biofuel, and therefore its application is restricted.
5, transesterification method
Transesterification method is the main method of current suitability for industrialized production biofuel, be ester-interchange method again, namely under catalyzer and high temperature, carry out transesterification with animals and plants grease and formic acid, generate corresponding fatty acid methyl ester (biofuel), can by-product glycerin be generated simultaneously.Different according to used catalyzer, usually ester-interchange method is divided into chemical method and biological ester process two class.
Chemical method refer to using acid or alkali as catalyzer.
Biological enzyme rule is using lipase or microorganism cells as catalyzer.
Current industrial preparation biofuel mainly uses chemical method, and namely animal-plant oil and methyl alcohol carry out transesterification under the effect of the catalyzer such as acid or alkali, generate corresponding Fatty acid methyl ester and by-product glycerin.
An acidic catalyst can the esterification of catalyze fatty acid and methyl alcohol preferably, also can the transesterification of the animal-plant oil of catalysis preferably and methyl alcohol, but when catalyzed reaction, react slower, the time of reacting all is longer, and temperature of reaction requires high, and energy consumption is large, comparatively strong to equipment corrosion, easily produce " three wastes ".
Basic catalyst transesterification speed is fast, efficiency is high, but when containing more water and free fatty acids in reacting former dose, easily saponification reaction is there is in water and free lipid acid under the catalysis of alkali, not only consume alkaline catalysts, reduce speed of response simultaneously, and the difficulty that the saponified viscosity increasing reaction system generated is separated with glycerine, because of basic catalyst transesterification, current industrial production all adopts the alcohol oil rate example of 6:1, just can reach methanol content 98%, alcohol oil rate example uses volume of equipment large, yield poorly, energy consumption is large, alkaline catalysts is to equipment corrosion, easy generation " three wastes ".
6, supercritical methanol technology production biofuel
When a kind of temperature and pressure of material is simultaneously higher than its critical temperature and emergent pressure, namely claim intermediary liquid (supercritical fiuids).Supercritical liq both as reaction medium, also can participate in reaction directly in chemical reaction.Chemical reaction technology in supercritical liq can affect the solubleness of reaction mixture in supercritical liq, thus provides a kind of control productive rate, the recovery method of selectivity and reaction product.
Utilize Preparation of Biodiesel by Supercritical Method to be based on supercritical methanol both at home and abroad at present, and recent years supercritical co, overcritical methyl acetate, the supercritical liq technology such as supercritical carbon dimethyl phthalate biofuel preparation in also apply to some extent.
The methyl alcohol being in supercritical state has hydrophobicity, thus adds grease and the methyl esters solubleness in mutually, and the alcohol oil two-phase reaction system of this incomplete self-dissolving of system becomes the normal phase system dissolved each other completely.Along with going deep into of being familiar with supercritical fluids system, many scholars have carried out the research that biofuel is prepared in esterlysis in supercritical liq.This method is defined as under the condition of not adding catalyzer, grease and methyl esters are at the supercritical state (Tc=512.4K of methyl esters, PC=8.09mpa) the ester change carried out under connects reaction and produces fatty acid methyl ester (biofuel), according to company documents data, maximum temperature can reach (400 ± 1 DEG C), top pressure can reach 130mpa, prepares biofuel compare with esterification process with transesterification method and ester process, and supercritical methanol technology tool has the following advantages:
(1) catalyst-free, reaction later separation is simple, nonpollution environment;
(2) ingredient requirement is low, need not pre-treatment, even the free fatty acids of more than 30% is for the raw material of amount number, and water content is that the stock oil of 30% is after reaction in several minutes, on the yield of fatty acid methyl ester substantially without impact, the yield of fatty acid methyl ester can reach more than 90%;
(3) methyl esters and grease can become homogeneous phase in the supercritical state, substantially increase speed of response and shorten the reaction times;
(4) easily continuous prodution is realized.
Also there is certain defect in this method, as (1) prepares severe reaction conditions needed for biofuel (high temperature, high pressure); (2) react alcohol oil rate too high, equipment yield is low, and Methanol Recovery internal circulating load is large, considerably increases the investment of reactive system equipment and the investment of workshop land used construction; (3) the viscosity ratio petrifaction diesel of fatty acid methyl ester is high; (4) product density and cold filter clogging temperature temperature higher than petrifaction diesel; (5) fuel value is lower than petrifaction diesel.
Summary of the invention
The object of the invention is to the deficiency effectively overcoming above-mentioned technology, a kind of production technique of novel fatty acid methyl esters biofuel is provided, by this technique, the present invention improves the quality of biofuel, reduce facility investment and production cost, reach environmental protection and energy saving effect, for the industrialization of large-scale industry provides application.
Technical scheme of the present invention is achieved in that its improvements are: this technique comprises the following steps:
A, raw-materially to choose: choose waste animal and vegetable oil as main raw material, choose methyl alcohol, dme, solvent oil be cosolvent, choose toluene-4 sulfonic acid in addition again as catalyzer, and the mass ratio of the animal-plant oil chosen, methyl alcohol, dme, solvent oil and toluene-4 sulfonic acid is 100:60:10-30:10-30:0.1;
B, raw-material mixing and reaction: animal-plant oil, methyl alcohol and toluene-4 sulfonic acid are added successively and seals in storage tank, animal-plant oil and methyl alcohol generation transesterification reaction under the effect of catalyzer, generate fatty acid methyl ester;
Adding of C, dme, solvent oil: add dme and solvent oil in sealing storage tank, dme and solvent oil participate in transesterification reaction as cosolvent, be conducive to the cosolvency improving methyl alcohol, dme, solvent oil and animal-plant oil, fast reaction speed and raising esterification yield, when there is transesterification reaction in described step B and step C, temperature of reaction in sealing storage tank is greater than 120 DEG C, and the reaction pressure in sealing storage tank is 0.1-2.0MPa, and the reaction times is 25-35 minute;
D, product separation: dme add sealing storage tank internal reflux evenly after, mutually dissolve with fatty acid methyl ester, pressure in sealing storage tank drops to 101.3KPa gradually, when temperature in sealing storage tank drops to normal temperature gradually, fatty acid methyl ester and dme dissolve completely, after this after isolating byproduct glycerine from the product obtained, then fatty acid methyl ester biofuel is obtained.
In described steps A, the main raw material chosen also includes acidification oil.
In described steps A, the methyl alcohol chosen is liquid methanol or gaseous methanol, and the dme chosen is liquid dimethyl ether or gaseous dimethyl.
In described step C, the temperature of reaction in sealing storage tank is greater than 120 DEG C, and is less than the critical temperature of methyl alcohol.
Beneficial effect of the present invention is: one, employing methyl alcohol and dme solvent oil can reduce reaction pressure and temperature as cosolvent and adding of 0.1% catalyzer, dme is added in the transesterification reaction of waste grease and methyl alcohol, react 30 minutes under super methanol critical temperature reflux, the ester exchange rate of fatty acid methyl ester can reach 98%, and reaction pressure < 1.0MPa now, compare with reaction conditions needed for Preparation of Biodiesel by Supercritical Method (high temperature, high pressure), greatly reduce the facility investment of reactive system; Two, adopt methyl alcohol and dme solvent oil as cosolvent, decrease ester oil ratio, the ester oil of esterification process, transesterification method is higher than too, be generally 6:1 to 21:1. and adopt cosolvent, ester oil, than being 0.6:1, greatly reducing the investment of reactor body sum, reduces energy consumption in production; Three, adopt methyl alcohol and dme and solvent oil as cosolvent, ingredient requirement is low, waste grease can be used, or lipid acid is raw material, be that the stock oil of 30% is after reaction in several minutes to water ratio, the yield of fatty acid methyl ester still can reach more than 90%, avoid esterification process, the water content of transesterification method grease can cause reaction and make byproduct glycerine separation difficulty; Four, adopt methyl alcohol and dme solvent oil as cosolvent, catalyst levels is grease 0.1%, and reaction follow-up separation process is simple, nonpollution environment; Five, the dme of cosolvent method, the adding of solvent oil, molten altogether with grease, outside promoting that methyl esters and the homogeneous phase of grease are common molten, improves quality product.
[embodiment]
The present invention is further described by the following embodiment.
embodiment 1
The production technique of a kind of novel fatty acid methyl esters biofuel that the present invention discloses, concrete, this technique comprises the following steps:
A, raw-materially to choose: choose waste animal and vegetable oil as main raw material, in the present embodiment, main raw material also can the acidification oil of selected part, choose methyl alcohol in addition, dme, solvent oil is cosolvent, choose toluene-4 sulfonic acid again as catalyzer, and the main raw material chosen (comprising the acidification oil of animal-plant oil and part), methyl alcohol, dme, the mass ratio of solvent oil and toluene-4 sulfonic acid is 100:60:10:10:0.1, in the present embodiment, choose main raw material (comprising the acidification oil of animal-plant oil and part) 50Kg, methyl alcohol 30Kg, dme 5Kg, solvent oil 5kg, and toluene-4 sulfonic acid is 0.05Kg,
B, raw-material mixing and reaction: the animal-plant oil chosen in steps A, methyl alcohol and toluene-4 sulfonic acid are added successively and seals in storage tank, animal-plant oil and methyl alcohol generation transesterification reaction under the effect of catalyzer, generate fatty acid methyl ester;
C, dme, adding of solvent oil: add dme and solvent oil in sealing storage tank, dme and solvent oil participate in transesterification reaction as cosolvent, be conducive to improving methyl alcohol, dme, the cosolvency of solvent oil and animal-plant oil, fast reaction speed and raising esterification yield, when there is transesterification reaction in described step B and step C, temperature of reaction in sealing storage tank is 160 DEG C, this temperature of reaction should lower than the critical temperature 240 DEG C of methyl alcohol, reaction pressure in sealing storage tank is 1.5MPa, and the reaction times is 30 minutes, and in reaction after 30 minutes, ester exchange rate reaches more than 98.5%,
D, product separation: dme add sealing storage tank internal reflux evenly after, mutually dissolve with fatty acid methyl ester, pressure in sealing storage tank drops to 101.3KPa gradually, when temperature in sealing storage tank drops to normal temperature gradually, fatty acid methyl ester and dme dissolve completely, after this after isolating byproduct glycerine from the product obtained, then fatty acid methyl ester biofuel is obtained.
By above-mentioned step, then can obtain fatty acid methyl esters biofuel, the present invention adopts methyl alcohol, dme, solvent oil as cosolvent, avoid esterification process, transesterification method ester oil than too high defect, be generally 6:1 to 21:1, and adopting methyl alcohol and dme as cosolvent, ester oil, than being 0.6:1, greatly reducing investment and reduces energy consumption in producing; In addition, adopt methyl alcohol, dme and solvent oil as cosolvent, waste grease can be used, or lipid acid is raw material, be that the stock oil of 30% is after reaction in several minutes to water ratio, the yield of fatty acid methyl ester still can reach more than 90%, avoid esterification process, the water content of transesterification method grease can cause reaction and make the difficulty that byproduct glycerine is separated.
embodiment 2
The production technique of a kind of novel fatty acid methyl esters biofuel that the present invention discloses, this technique comprises the following steps:
A, raw-materially to choose: choose waste animal and vegetable oil as main raw material, choose methyl alcohol, dme, solvent oil be cosolvent, choose toluene-4 sulfonic acid again as catalyzer, and the mass ratio of the main raw material chosen, methyl alcohol, dme, solvent oil and toluene-4 sulfonic acid is 100:60:30:30:0.1, in the present embodiment, the quality of the vegetable and animals oils chosen is 100Kg, the quality of the methyl alcohol chosen is 60Kg, the quality of the dme chosen is 30Kg, the solvent oil chosen is 30kg, and the quality of the catalyzer chosen is 0.1Kg;
B, raw-material mixing and reaction: animal-plant oil, methyl alcohol and catalyzer are added successively and seals in storage tank, animal-plant oil and methyl alcohol generation transesterification reaction under the effect of catalyzer, generate fatty acid methyl ester;
Adding of C, dme, solvent oil: add dme, solvent oil in sealing storage tank, dme participates in transesterification reaction as cosolvent, be conducive to the cosolvency improving methyl alcohol, dme and animal-plant oil, fast reaction speed and raising esterification yield, when there is transesterification reaction in described step B and step C, temperature of reaction in sealing storage tank is 200 DEG C, this temperature of reaction should lower than the critical temperature 240 DEG C of methyl alcohol, reaction pressure in sealing storage tank is 2.0MPa, and the reaction times is 35 minutes;
D, product separation: dme add sealing storage tank internal reflux evenly after, mutually dissolve with fatty acid methyl ester, pressure in sealing storage tank drops to 101.3KPa gradually, when temperature in sealing storage tank drops to normal temperature gradually, fatty acid methyl ester and dme dissolve completely, after this after isolating byproduct glycerine from the product obtained, then fatty acid methyl ester biofuel is obtained.
The present invention adopts cosolvent and adding of 0.1% catalyzer can reduce reaction pressure and temperature, dme is added in the transesterification reaction of waste grease and methyl alcohol, react 30 minutes under super methanol critical temperature reflux, the ester exchange rate of fatty acid methyl ester can reach 98%, and reaction pressure < 1.0MPa now, with reaction conditions needed for Preparation of Biodiesel by Supercritical Method (high temperature, high pressure), greatly reduce the facility investment of reactive system; Ester oil ratio, the ester oil of esterification process, transesterification method is higher than too, is generally 6:1 to 21:1, adopts methyl alcohol and dme as cosolvent, and ester oil, than being 0.6:1, greatly reducing the investment of reactor body sum, reduces energy consumption in production; In addition, adopt methyl alcohol, dme and solvent oil as cosolvent, ingredient requirement is low, waste grease can be used, or lipid acid is raw material, to water ratio be 30% stock oil through several minutes reaction after, the yield of fatty acid methyl ester still can reach more than 90%, avoid esterification process, the water content of transesterification method grease can cause reaction and make byproduct glycerine separation difficulty; Adopt methyl alcohol and dme as cosolvent, catalyst levels is grease 0.1%, and reaction follow-up separation process is simple, nonpollution environment.
embodiment 3
Present invention is disclosed a kind of production technique of novel fatty acid methyl esters biofuel, in the present embodiment, this technique is only directly to adding pure fatty acid methyl esters and liquid phase dme in reactor from embodiment 1 and the different of embodiment 2, dme add sealing storage tank internal reflux evenly after, mutually dissolve with fatty acid methyl ester, pressure in sealing storage tank drops to 101.3KPa gradually, when temperature in sealing storage tank drops to normal temperature gradually, fatty acid methyl ester and dme dissolve completely, after this after isolating byproduct glycerine from the product obtained, then obtain fatty acid methyl ester biofuel.
Described above is only preferred embodiment of the present invention, and above-mentioned specific embodiment is not limitation of the present invention.In technological thought category of the present invention, can occur various distortion and amendment, all those of ordinary skill in the art, according to describing retouching, the amendment made above or equivalent replacing, all belong to the scope that the present invention protects.
Claims (8)
1. a production technique for novel fatty acid methyl esters biofuel, is characterized in that: this technique comprises the following steps:
A, raw-materially to choose: choose waste animal and vegetable oil as main raw material, choose methyl alcohol, dme, solvent oil be cosolvent, choose toluene-4 sulfonic acid in addition again as catalyzer, and the mass ratio of the animal-plant oil chosen, methyl alcohol, dme, solvent oil and toluene-4 sulfonic acid is 100:60:10-30:10-30:0.1;
B, raw-material mixing and reaction: animal-plant oil, methyl alcohol and toluene-4 sulfonic acid are added successively and seals in storage tank, animal-plant oil and methyl alcohol generation transesterification reaction under the effect of catalyzer, generate fatty acid methyl ester;
Adding of C, dme, solvent oil: add dme and solvent oil in sealing storage tank, dme and solvent oil participate in transesterification reaction as cosolvent, be conducive to the cosolvency improving methyl alcohol, dme, solvent oil and animal-plant oil, fast reaction speed and raising esterification yield, when there is transesterification reaction in described step B and step C, temperature of reaction in sealing storage tank is greater than 120 DEG C, and the reaction pressure in sealing storage tank is 0.1-2.0MPa, and the reaction times is 25-35 minute;
D, product separation: dme add sealing storage tank internal reflux evenly after, mutually dissolve with fatty acid methyl ester, pressure in sealing storage tank drops to 101.3KPa gradually, when temperature in sealing storage tank drops to normal temperature gradually, fatty acid methyl ester and dme dissolve completely, after this after isolating byproduct glycerine from the product obtained, then fatty acid methyl ester biofuel is obtained.
2. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, it is characterized in that: in described steps A, the main raw material chosen also includes acidification oil.
3. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, it is characterized in that: in described steps A, the methyl alcohol chosen is liquid methanol or gaseous methanol, and the dme chosen is liquid dimethyl ether or gaseous dimethyl.
4. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, is characterized in that: the mass ratio of described animal-plant oil, methyl alcohol, dme, solvent oil and toluene-4 sulfonic acid is 100:60:10:10:0.1.
5. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, is characterized in that: the mass ratio of described animal-plant oil, methyl alcohol, dme, solvent oil and toluene-4 sulfonic acid is 100:60:30:30:0.1.
6. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, is characterized in that: in described step C, and the temperature of reaction in sealing storage tank is greater than 120 DEG C, and is less than the critical temperature of methyl alcohol.
7. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, it is characterized in that: in described step C, after transesterification reaction 25-35 minute, ester exchange rate reaches more than 98.5%.
8. the production technique of a kind of novel fatty acid methyl esters biofuel according to claim 1, it is characterized in that: when there is transesterification reaction in described step B and step C, temperature of reaction in sealing storage tank is 160 DEG C, reaction pressure in sealing storage tank is 1.5MPa, and the reaction times is 30 minutes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336887A (en) * | 2015-07-09 | 2017-01-18 | 岳阳市中发科技有限公司 | Production method for hydrocarbon oil |
| CN114717056A (en) * | 2022-04-25 | 2022-07-08 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for methyl esterification of oil by acid catalysis |
| CN115335355A (en) * | 2020-04-07 | 2022-11-11 | 巴斯夫欧洲公司 | Energy-saving production of biodiesel from natural or industrial waste oil |
-
2014
- 2014-01-26 CN CN201410037900.3A patent/CN104804878A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336887A (en) * | 2015-07-09 | 2017-01-18 | 岳阳市中发科技有限公司 | Production method for hydrocarbon oil |
| CN115335355A (en) * | 2020-04-07 | 2022-11-11 | 巴斯夫欧洲公司 | Energy-saving production of biodiesel from natural or industrial waste oil |
| CN114717056A (en) * | 2022-04-25 | 2022-07-08 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for methyl esterification of oil by acid catalysis |
| CN114717056B (en) * | 2022-04-25 | 2023-07-18 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for acid-catalyzed methyl esterification of grease |
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Application publication date: 20150729 |