CN101747182A - Low acid value esterification novel process - Google Patents
Low acid value esterification novel process Download PDFInfo
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- CN101747182A CN101747182A CN200810178791A CN200810178791A CN101747182A CN 101747182 A CN101747182 A CN 101747182A CN 200810178791 A CN200810178791 A CN 200810178791A CN 200810178791 A CN200810178791 A CN 200810178791A CN 101747182 A CN101747182 A CN 101747182A
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- acid value
- methyl alcohol
- novel process
- esterification
- methanol
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
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Abstract
The invention discloses a low acid value esterification novel process, and in particular relates to a low acid value esterification novel process in the process of producing biodiesel from waste animal and vegetable oil serving as raw materials, which is characterized in that: the novel process comprises a raw oil and methanol heating subsystem, a fatty acid and methanol full reaction subsystem and a methanol and water recycling subsystem. The method can make the fatty acid and the methanol fully reacted, and also can reduce the acid value of crude methyl ester prepared by the reaction to lower than 1mgKOH/g; and the further acid value reduction posttreatment is not needed and the qualified crude methyl ester is directly conveyed to the next working procedure. The water generated by the reaction and the methanol generated by separation can be fully recycled. The novel process can greatly shorten the reaction time, reduce methanol consumption and reduce the production cost by over 20 percent.
Description
Affiliated technical field
The present invention relates to a kind of low acid value esterification novel process, particularly a kind of is low acid value esterification novel process in the raw material production biofuel process with the waste animal vegetable oil.
Background technology
In recent years, biofuel develops very fast at home.Be the esterification of high acid value (70-120mgKOH/g) raw material must be obtained thick methyl esters in the raw material production biofuel process with the waste animal vegetable oil, further, obtain biofuel behind the incomplete lipid acid triglyceride of sterol, cured matter, phosphide, albumen and esterification that removal waste animal vegetable oil raw material brings through decompression, rectification and purification.The esterification of raw material obtains thick methyl esters to contain acid number higher in the traditional technology, about 5mgKOH/g, in order to improve the quality of product, just must carry out the road, back and fall the acid number processing, thereby expend a large amount of energy and raw material, prolong the reaction times simultaneously, cost is significantly improved.The present invention can make lipid acid and methyl alcohol fully react, and the thick methyl esters acid value that reaction can be made again drops to below the 1mgKOH/g, need not further to fall the acid value aftertreatment, shortens the reaction times greatly, and can save methanol usage, makes production cost descend more than 20%.
Summary of the invention
The objective of the invention is to be to provide a kind of low acid value esterification novel process, particularly a kind of is low acid value esterification novel process in the raw material production biodiesel processes with the waste animal vegetable oil; It is characterized in that comprising stock oil and methyl alcohol and add thermal sub-system; A lipid acid and methyl alcohol fully reacts subsystem and methyl alcohol, a water reclaim subsystem again; Use this method lipid acid and methyl alcohol are fully reacted, the thick methyl esters acid value that reaction can be made again drops to below the 1mgKOH/g, need not further to fall the acid value aftertreatment, and directly qualified thick methyl esters is sent into next process.The water that reaction produces can fully obtain recycle with the methyl alcohol that separates generation; The present invention can shorten the reaction times greatly, and can save methanol usage, makes production cost descend more than 20%.
Technical scheme
Main points of the present invention are to relate to a kind of low acid value esterification novel process, it is characterized in that including that stock oil and methyl alcohol add thermal sub-system, a lipid acid and methyl alcohol fully reacts subsystem and methyl alcohol, a water reclaim subsystem again.
It is that the high acid value after the impurity elimination (120mgKOH/g) waste animal vegetable oil is sent into enamel heat exchanger (1) that stock oil and methyl alcohol add thermal sub-system, is heated to 98-146 ℃; Simultaneously methyl alcohol is sent into methanol evaporator (2), be heated to 110-130 ℃, methyl alcohol is fully vaporized.
It is that high acid value (120mgKOH/g) stock oil and the methyl alcohol of fully heating are sent into enamel reaction tower (3) that lipid acid and methyl alcohol fully react subsystem, temperature increase is to 120-150 ℃ in the tower, stock oil sprays through spray equipment (7), and by jar interior two layers of irregular filler of enamel (6) up and down, the gasified methanol that sprays with methyl alcohol spray equipment (8) carries out sufficient esterification; The prepared thick methyl esters acid value of esterification is lower than 1mgKOH/g, can directly enter neutralization, removes acid catalyzer, decompression, rectification and purification get qualified biofuel.
Methyl alcohol, water reclamation system are that the water and the methyl alcohol that will reaction produce are sent to cooling tower (4) by the reaction tower upper pipe, through cooling with water and Methanol Recovery in buffer tank (5), enter recirculation system.
Description of drawings:
Fig. 1 is a kind of low acid value esterification novel process synoptic diagram of the present invention
1, enamel heat exchanger 2, methanol evaporator 3, enamel reactor 4, cooling tower 5, buffer tank 6, the irregular filler 7 of enamel, raw material spray thrower 8, methyl alcohol spray thrower
The invention has the advantages that:
1, can will usually to acid value could be reduced by post processing in traditional esterification reaction tech, cause the shortcoming of whole reaction complexity, time lengthening to be improved, make esterification reaction process greatly save the reaction time because having reduced aftertreatment technology, according to producing actual the detection, the reaction time than original shorten near half. Thereby improved production capacity, saved production cost.
2, owing to secondary spraying in the employing tank, and by irregular enamel filler in the tank, the contact-making surface of raw material and methyl alcohol is increased greatly, sufficient reacting, the present invention can make the methanol usage saving more than 30%.
3, the present invention can become acid value to drop to 1mgKOH/g the disposable esterification of high acid value (120mgKOH/g) raw material, and the semi-finished product of high-quality are provided for postchannel process.
Embodiment
Below by example the present invention is further described:
High acid value after the impurity elimination (120mgKOH/g) waste animal vegetable oil raw material and catalyzer are sent into enamel heat exchanger (1), be heated to 98-120 ℃; Simultaneously methyl alcohol is sent into methanol evaporator (2), be heated to 110-130 ℃, methyl alcohol is fully vaporized; High acid value (120mgKOH/g) stock oil and the methyl alcohol of fully heating are sent into enamel reactor (3), and temperature increase is to 120-150 ℃ in jar; With stock oil through spray (7) by jar in two layers of irregular filler of enamel (6) up and down, carry out abundant esterification with the methyl alcohol of vaporization through spraying (8), reacted 1-5 hour; The prepared thick methyl esters acid value of esterification is lower than 1mgKOH/g, and methyl ester conversion rate can reach 97%; The thick methyl esters of low acid value can directly enter neutralization, get qualified biofuel except that acid catalyzer, decompression, rectification and purification; Water that produces in the reaction and methyl alcohol are sent to cooling tower (4) by the retort upper pipe, through cooling with water and Methanol Recovery in buffer tank (5), enter recirculation system.
Claims (7)
1. low acid value esterification novel process, particularly a kind of is a kind of low acid value esterification novel process in the raw material production biodiesel processes with the waste animal vegetable oil, it is characterized in that containing at least stock oil and methyl alcohol and adds thermal sub-system; Lipid acid and methyl alcohol fully react subsystem and methyl alcohol, a water reclaim subsystem.
2. a kind of low acid value esterification novel process as claimed in claim 1, it is characterized in that stock oil and methyl alcohol heating system are with (70-120mgKOH/g) waste animal vegetable oil of the high acid value after the impurity elimination and catalyst mix, send into enamel heat exchanger (1), and be heated to 98-146 ℃; Simultaneously methyl alcohol is sent into methanol evaporator (2), be heated to 110-130 ℃, methyl alcohol is fully vaporized.
3. high acid value as claimed in claim 2 (70-120mgKOH/g) waste animal vegetable oil raw material is characterized in that waste animal vegetable oil can be acidifying oil, the lipid acid of removal of impurities, also can be sewer oil, the hogwash fat of removal of impurities.
4. catalyzer as claimed in claim 2 is characterized in that catalyzer can be sulfuric acid and sulfonic acid or its mixture.
5. a kind of low acid value esterification novel process as claimed in claim 1, it is characterized in that it is in enamel reactor (3) that stock oil and methyl alcohol fully react, temperature increase is to 120-150 ℃ in jar, stock oil through spray thrower (7) by jar in up and down two layers of irregular filler of enamel (6) and gasified methanol carry out esterification, the thick methyl alcohol acid value that makes is lower than 1mgKOH/g.
6. enamel reactor as claimed in claim 5 (3) is characterized in that design has two layers of enamel filler (6) up and down in the enamel reactor (3), to enlarge the reaction table area, can make raw material by fully reacting with methyl alcohol.
7. a kind of low acid value esterification novel process as claimed in claim 1, it is characterized in that methyl alcohol, water reclamation system are that water and methyl alcohol that reaction produces are sent to cooling tower (4) by the retort upper pipe, through cooling with water and Methanol Recovery in buffer tank (5), enter recirculation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810178791A CN101747182A (en) | 2008-12-01 | 2008-12-01 | Low acid value esterification novel process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810178791A CN101747182A (en) | 2008-12-01 | 2008-12-01 | Low acid value esterification novel process |
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| CN101747182A true CN101747182A (en) | 2010-06-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948383A (en) * | 2010-10-14 | 2011-01-19 | 谢仁华 | Device and method for preparing medium-high carbon fatty acid ester by continuous alcoholysis method |
| CN101948384A (en) * | 2010-10-14 | 2011-01-19 | 谢仁华 | Device and method for preparing medium and high-carbon aliphatic ester by continuous etherification method |
| CN103013678A (en) * | 2011-09-20 | 2013-04-03 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN103013676A (en) * | 2011-09-20 | 2013-04-03 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN104479885A (en) * | 2014-11-28 | 2015-04-01 | 浙江赞宇科技股份有限公司 | Method and device for continuously producing triglyceride |
| CN105670804A (en) * | 2016-03-22 | 2016-06-15 | 唐山金利海生物柴油股份有限公司 | Equipment and method for preparing biodiesel under low-temperature gas-phase methanol conditions |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148600A (en) * | 2007-10-18 | 2008-03-26 | 江苏高科石化股份有限公司 | Method for preparing biological diesel oil from waste animals and plants grease |
| CN101195572A (en) * | 2006-12-08 | 2008-06-11 | 四川古杉油脂化学有限公司 | Method for synthesizing fatty acid methyl ester |
-
2008
- 2008-12-01 CN CN200810178791A patent/CN101747182A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195572A (en) * | 2006-12-08 | 2008-06-11 | 四川古杉油脂化学有限公司 | Method for synthesizing fatty acid methyl ester |
| CN101148600A (en) * | 2007-10-18 | 2008-03-26 | 江苏高科石化股份有限公司 | Method for preparing biological diesel oil from waste animals and plants grease |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948383A (en) * | 2010-10-14 | 2011-01-19 | 谢仁华 | Device and method for preparing medium-high carbon fatty acid ester by continuous alcoholysis method |
| CN101948384A (en) * | 2010-10-14 | 2011-01-19 | 谢仁华 | Device and method for preparing medium and high-carbon aliphatic ester by continuous etherification method |
| CN101948384B (en) * | 2010-10-14 | 2013-11-06 | 谢仁华 | Device and method for preparing medium and high-carbon aliphatic ester by continuous etherification method |
| CN101948383B (en) * | 2010-10-14 | 2014-06-18 | 谢仁华 | Device and method for preparing medium-high carbon fatty acid ester by continuous alcoholysis method |
| CN103013678A (en) * | 2011-09-20 | 2013-04-03 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN103013676A (en) * | 2011-09-20 | 2013-04-03 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN103013676B (en) * | 2011-09-20 | 2014-12-03 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN103013678B (en) * | 2011-09-20 | 2014-12-31 | 中国石油化工股份有限公司 | Method for reducing biodiesel crude product acid value, and biodiesel preparation method |
| CN104479885A (en) * | 2014-11-28 | 2015-04-01 | 浙江赞宇科技股份有限公司 | Method and device for continuously producing triglyceride |
| CN105670804A (en) * | 2016-03-22 | 2016-06-15 | 唐山金利海生物柴油股份有限公司 | Equipment and method for preparing biodiesel under low-temperature gas-phase methanol conditions |
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Application publication date: 20100623 |