CN103361185A - Non-catalytic production method of biodiesel - Google Patents
Non-catalytic production method of biodiesel Download PDFInfo
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- CN103361185A CN103361185A CN2013103438032A CN201310343803A CN103361185A CN 103361185 A CN103361185 A CN 103361185A CN 2013103438032 A CN2013103438032 A CN 2013103438032A CN 201310343803 A CN201310343803 A CN 201310343803A CN 103361185 A CN103361185 A CN 103361185A
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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 manufacturing of biodiesel and specifically provides a non-catalytic production method of biodiesel. The method comprises the steps of firstly enabling raw material oil or fatty acid and methanol to react to generate a fatty acid methyl ester crude product, distilling and refining to get a high-purity and light-color product. The non-catalytic production method of the biodiesel, disclosed by the invention, has the advantages of high purity of the product, light color and no peculiar smell. The method is suitable for oil or fatty acid and other inferior raw materials, and further has the advantages of simple process, high conversion rate and continuous and large-scale production. Compared with catalytic production of the biodiesel, the links of recovering a catalyst and separating the catalyst from the product are eliminated, the environmental pollution and the equipment corrosion are reduced, and the social and economic benefits are significant.
Description
Technical field
The invention belongs to the production of biodiesel technical field, be specifically related to a kind of production method without catalysis biological diesel oil.
Background technology
Biofuel (fatty acid methyl ester) is a kind of cleaning oxygenated fuel, have renewable, as to be easy to biological degradation, burning and exhausting pollutent lower than the petroleum diesel, substantially without advantages such as Greenhouse effect.Belong to environmentally friendly fuel, can reach the combustioncharacteristics intimate consistent with petroleum diesel; And the biofuel flash-point is high, is convenient to store, transports and uses, and has better security.In American-European countries such as Germany and the U.S., the production of biofuel has had certain scale, consider based on environmental protection and strategic aspect, the a plurality of national government in the world have been put into effect in the petroleum diesel must add pressure standard such as B2, B5, the B7 etc. of certain proportion biofuel, has promoted the rapid growth of production of biodiesel and consumption.According to statistics, biofuel has become fastest-rising a kind of petroleum replacing diesel oil fuel.At present, the main raw material of biofuel is animal and vegetable oil, frying waste oil and sewer oil, also has vegetable oil mill oil (soap) pin through the acidification oil of acidifying, the by product lipid acid of physical refining, the by product tal fibre wet goods of sulphate process pulp mill.The method for preparing biofuel commonly used is esterification and transesterification reaction under catalyst action.The renewable Novel clean liquid fuel of producing through alcoholysis reaction take animal-plant oil as raw material is called biofuel.The main chemical method of liquid phase acid-base catalysis that adopts prepares biofuel both at home and abroad at present.This method technical maturity is fit to intermittently or continuously produce, and reaction conditions relaxes; Shortcoming is to make with extra care raw material, and the aftertreatment of alcoholysis process is complicated, produces waste liquid and low value by product.Therefore be necessary the more advanced rational biofuel processing technology of exploitation, such as catalyzed by solid base, enzyme catalysis and without the grease alcoholysis reaction technology of catalysis.
No matter use which kind of catalyzer, all have catalyst recovery and the problem of from product, separating, use the most general sulfuric acid catalyzer also equipment, pipeline to be had serious corrodibility and cause affecting the side reaction of quality product.Reclaiming and removing from product the catalyzer process, time and effort consuming not only also might be to environment.Therefore need a kind of simple without catalysis, technical process, be applicable to inferior raw material, but the industrial process of mass-producing.
Summary of the invention
In order to overcome defects, the invention provides a kind of production method without catalysis biological diesel oil (fatty acid ester), the method does not need to use catalyzer, catalyst recovery and the link of from product, separating have been saved, easy to operate, improve the utility value of the inferior raw materials such as oil or lipid acid, the biofuel look shallow free from extraneous odour that obtains.
For achieving the above object, the present invention adopts following technical scheme:
A kind of production method without catalysis biological diesel oil, described method are first stock oil or lipid acid and methyl alcohol reaction to be generated the fatty acid methyl ester crude product, through distilling refining high purity, the look shallow product of obtaining.
Concrete step is as follows:
(1) be that 95-99.9% methyl alcohol is sent into respectively esterification device continuously with stock oil or lipid acid and excessive purity, temperature is controlled in 100-260 ℃, pressure is to react under the 0.08-3MPa condition.
(2) discharge continuously respectively simultaneously fatty acid methyl ester crude product, raw glycerine and the unreacted methyl alcohol that generates, methyl alcohol enters retrieving arrangement and recycles.
(3) with the underpressure distillation of fatty acid methyl ester crude product, absolute pressure is at 0.1-1000Pa, and temperature is controlled under the 100-275 ℃ of condition, and overhead product is that look shallow, free from extraneous odour biofuel product.
Described stock oil or lipid acid are animal and vegetable oil, frying waste oil, sewer oil, swill oil, acidification oil, lipid acid, tal fibre wet goods.
Remarkable advantage of the present invention is:
Production method without catalysis biological diesel oil of the present invention, product purity is high, look shallow free from extraneous odour.The inferior raw materials such as the applicable oil of the method or lipid acid, technique is simple, and transformation efficiency is high, but serialization, large-scale production.Compare with catalysis method production biofuel, catalyst-free reclaims and the link of separating from product, environmental contamination reduction and equipment corrosion.
Embodiment
Following example is unrestricted the present invention in order further to illustrate technological process feature of the present invention.
Embodiment 1
1, lipid acid and excessive methyl alcohol (purity 95%) are sent into respectively esterification device continuously, keep 100 ℃ of temperature, pressure to react at 0.08MPa.Simultaneously, discharge continuously respectively crude fatty acid methyl ester and the unreacted methyl alcohol that generates.Methyl alcohol enters retrieving arrangement and recycles.
2, with the crude fatty acid methyl ester underpressure distillation, absolute pressure is at 0.1Pa, and temperature is under 100 ℃ of conditions, and overhead product is acid value 0.8mmgKOH/g, color and luster 1# (Fe-Co colorimetric), free from extraneous odour biofuel product.
Embodiment 2
1, tall oil and excessive methyl alcohol (purity 99.9%) are sent into respectively esterification device continuously, keep 260 ℃ of temperature, pressure to react at 3MPa.Simultaneously, discharge continuously respectively crude fatty acid methyl ester and the unreacted methyl alcohol that generates.Methyl alcohol enters retrieving arrangement and recycles.
2, with the crude fatty acid methyl ester underpressure distillation, absolute pressure is at 1000Pa, and temperature is under 275 ℃ of conditions, and overhead product is acid value 0.7mmgKOH/g, color and luster 2.5# (Fe-Co colorimetric), free from extraneous odour biofuel product.
Embodiment 3
1, acidification oil and excessive methyl alcohol (purity 96%) are sent into respectively esterification device continuously, keep 140 ℃ of temperature, pressure to react at 0.8MPa.Simultaneously, discharge continuously respectively crude fatty acid methyl ester, raw glycerine and the unreacted methyl alcohol that generates.Methyl alcohol enters retrieving arrangement and recycles.
2, with the crude fatty acid methyl ester underpressure distillation, absolute pressure is at 250Pa, and temperature is under 144 ℃ of conditions, and overhead product is acid value 0.8mmgKOH/g, color and luster 2# (Fe-Co colorimetric), free from extraneous odour biofuel product.
Embodiment 4
1, sewer oil and excessive methyl alcohol (purity 97%) are sent into respectively esterification device continuously, keep 180 ℃ of temperature, pressure to react at 1.5MPa.Simultaneously, discharge continuously respectively crude fatty acid methyl ester, raw glycerine and the unreacted methyl alcohol that generates.Methyl alcohol enters retrieving arrangement and recycles.
2, with the crude fatty acid methyl ester underpressure distillation, absolute pressure is at 500Pa, and temperature is under 188 ℃ of conditions, and overhead product is acid value 0.6mmgKOH/g, color and luster 1# (Fe-Co colorimetric), free from extraneous odour biofuel product.
Embodiment 5
1, will fry waste oil and excessive methyl alcohol (purity 98%) is sent into respectively esterification device continuously, and keep 220 ℃ of temperature, pressure to react at 2.2MPa.Simultaneously, discharge continuously respectively crude fatty acid methyl ester, raw glycerine and the unreacted methyl alcohol that generates.Methyl alcohol enters retrieving arrangement and recycles.
2, with the crude fatty acid methyl ester underpressure distillation, absolute pressure is at 750Pa, and temperature is under 232 ℃ of conditions, and overhead product is acid value 0.7mmgKOH/g, color and luster＜1# (Fe-Co colorimetric), free from extraneous odour biofuel product.
Claims (3)
1. production method without catalysis biological diesel oil is characterized in that: described method is first stock oil or lipid acid and methyl alcohol reaction to be generated the fatty acid methyl ester crude product, and the fatty acid methyl ester crude product is through distilling the refining product biofuel that obtains.
2. a kind of production method without catalysis biological diesel oil according to claim 1 is characterized in that, concrete steps are as follows:
(1) be that 95-99.9% methyl alcohol is sent into respectively esterification device continuously with stock oil or lipid acid and excessive purity, temperature is controlled in 100-260 ℃, pressure is to react under the 0.08-3MPa condition;
(2) discharge continuously respectively simultaneously fatty acid methyl ester crude product, raw glycerine and the unreacted methyl alcohol that generates, methyl alcohol enters retrieving arrangement and recycles;
(3) with the underpressure distillation of above-mentioned fatty acid methyl ester crude product, absolute pressure is at 0.1-1000Pa, and temperature is controlled under the 100-275 ℃ of condition, and overhead product is biological diesel product.
3. a kind of production method without catalysis biological diesel oil according to claim 1 and 2 is characterized in that: described stock oil or lipid acid are animal and vegetable oil, frying waste oil, sewer oil, swill oil, acidification oil, lipid acid, tal fibre wet goods.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038995A (en) * | 2015-08-21 | 2015-11-11 | 中国林业科学研究院林产化学工业研究所 | Non-catalytic esterification deacidification method for high-acid-value grease |
| CN105861164A (en) * | 2016-05-03 | 2016-08-17 | 陕西德融新能源股份有限公司 | Technology for producing biodiesel from non-refined fat with no catalyst |
| CN106916629A (en) * | 2015-12-28 | 2017-07-04 | 丰益(上海)生物技术研发中心有限公司 | A kind of processing method of color reversion grease |
| CN114214122A (en) * | 2021-12-21 | 2022-03-22 | 常州市金坛区维格生物科技有限公司 | Method for preparing low-sulfur fatty acid methyl ester from high-acid-value waste oil by medium-low pressure method |
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| CN1724613A (en) * | 2005-02-03 | 2006-01-25 | 云南师范大学 | Technology of preparing biological diesel oil from animal and vegetable oil |
| CN101096602A (en) * | 2006-06-29 | 2008-01-02 | 周鼎力 | Method for continuous synthesis of biodiesel without catalyst |
| CN103215140A (en) * | 2013-03-19 | 2013-07-24 | 广东贸盛能源投资有限公司 | Method for continuously producing biodiesel without catalysts |
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2013
- 2013-08-09 CN CN2013103438032A patent/CN103361185A/en active Pending
Patent Citations (3)
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| CN1724613A (en) * | 2005-02-03 | 2006-01-25 | 云南师范大学 | Technology of preparing biological diesel oil from animal and vegetable oil |
| CN101096602A (en) * | 2006-06-29 | 2008-01-02 | 周鼎力 | Method for continuous synthesis of biodiesel without catalyst |
| CN103215140A (en) * | 2013-03-19 | 2013-07-24 | 广东贸盛能源投资有限公司 | Method for continuously producing biodiesel without catalysts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038995A (en) * | 2015-08-21 | 2015-11-11 | 中国林业科学研究院林产化学工业研究所 | Non-catalytic esterification deacidification method for high-acid-value grease |
| CN106916629A (en) * | 2015-12-28 | 2017-07-04 | 丰益(上海)生物技术研发中心有限公司 | A kind of processing method of color reversion grease |
| CN105861164A (en) * | 2016-05-03 | 2016-08-17 | 陕西德融新能源股份有限公司 | Technology for producing biodiesel from non-refined fat with no catalyst |
| CN114214122A (en) * | 2021-12-21 | 2022-03-22 | 常州市金坛区维格生物科技有限公司 | Method for preparing low-sulfur fatty acid methyl ester from high-acid-value waste oil by medium-low pressure method |
| CN114214122B (en) * | 2021-12-21 | 2023-09-26 | 常州市金坛区维格生物科技有限公司 | Method for preparing low-sulfur fatty acid methyl ester from high-acid value waste grease by low-pressure method |
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Application publication date: 20131023 |