CN103382416B - A kind of technique of biodiesel esterification - Google Patents
A kind of technique of biodiesel esterification Download PDFInfo
- Publication number
- CN103382416B CN103382416B CN201310012597.7A CN201310012597A CN103382416B CN 103382416 B CN103382416 B CN 103382416B CN 201310012597 A CN201310012597 A CN 201310012597A CN 103382416 B CN103382416 B CN 103382416B
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- CN
- China
- Prior art keywords
- esterification
- reaction
- present
- technique
- transformation efficiency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000032050 esterification Effects 0.000 title claims abstract description 22
- 238000005886 esterification reaction Methods 0.000 title claims abstract description 22
- 239000003225 biodiesel Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004519 grease Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 16
- 230000009466 transformation Effects 0.000 abstract description 9
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 8
- 239000000194 fatty acid Substances 0.000 abstract description 8
- 229930195729 fatty acid Natural products 0.000 abstract description 8
- -1 fatty acid ester Chemical class 0.000 abstract description 5
- 230000035484 reaction time Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 150000004665 fatty acids Chemical class 0.000 abstract description 3
- 239000002551 biofuel Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011175 product filtration Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The present invention relates to a kind of is fatty acid ester by convert fatty acids, particularly a kind of technique of biodiesel esterification.Esterification drops into waste grease in a kettle. to react under catalyzer existent condition, the catalyzer of esterification is phosphoric acid, temperature of reaction is 150 ~ 155 DEG C, reaction pressure is 0.8 ~ 0.85MPa, the accurate pressure of the present invention and temperature design, make reaction system be homogeneous system, the reaction times shortens greatly; React completely, the transformation efficiency 90 ~ 95% of relative traditional technology, the transformation efficiency of esterification of the present invention has important breakthrough and reaches more than 99.5%.<!--1-->
Description
Technical field
The present invention relates to a kind of is fatty acid ester by convert fatty acids, particularly a kind of technique of biodiesel esterification.
Background technology
Biofuel refers to the waterplant greases such as oil crops, Wild oil plant and engineering microalgae and animal grease, food garbage wet goods to be the reproducibility diesel oil fuel of the replaced petrifaction diesel that stock oil is made by ester exchange process.Biofuel is the one of biomass energy, and it is the mono alkyl ester of a kind of longer chain fatty acid that the technology such as biomass economy thermo-cracking obtain.Biofuel is the mixture of the high complicated organic composition of oxygen level, and these mixtures organism that mainly number molecular weight is large, almost comprises the oxygen-bearing organic matter of all kinds, as: ether, aldehyde, ketone, phenol, organic acid, alcohol etc.Composite biodiesel is with the byproduct of discarded vegetable and animals oils, used oil and refinery for raw material, then adds catalyzer, through specific equipment and special process synthesis.
In recent years, by the impact of crude oil price, environmental protection pressure, Biodiesel is in widespread attention.World's biofuel ultimate production about 2,050 ten thousand tons in 2011, wherein European Union accounts for 51%, and South American region (Brazil is main) accounts for 24%, Asia 13%, and Middle and North America is 11%, other areas 1%.
The production process major part of biofuel domestic is at present all that two-step approach reaction realizes, and is then purified by distillation, wherein because esterification is inhomogeneous reaction, and long reaction time, low conversion rate, and energy consumption is high.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency provides a kind of reaction times short, and transformation efficiency is high, the esterification of the biofuel of homogeneous reaction system.
The technical scheme realizing the object of the invention is a kind of technique of biodiesel esterification, drop into waste grease in a kettle. to react under catalyzer existent condition, the catalyzer of esterification is phosphoric acid, temperature of reaction is 150 ~ 155 DEG C, reaction pressure is 0.8 ~ 0.85MPa, and reaction system is homogeneous system.
The technique of above-mentioned biodiesel esterification, the temperature of reaction of described esterification is 150 DEG C.
The technique of above-mentioned biodiesel esterification, the reaction pressure of described esterification is 0.8MPa.
The production method of above-mentioned biofuel, the temperature of reaction of esterification is 155 DEG C.
The production method of above-mentioned biofuel, the reaction pressure of esterification is 0.85MPa.
Esterification of the present invention is under the condition of 150 ~ 155 DEG C and 0.8 ~ 0.85MPa, each material dissolution is strengthened, reaction system is in homogeneous state, and reactant point of contact increases, and the reaction times is within 3 ~ 5 hours, shortening to 30 minutes traditional normal pressure 100 DEG C of conditions, react more abundant, transformation efficiency improves, and pressure is lower than 0.8MPa transformation efficiency below 90%, and pressure is more than after 0.85MPa, reaction reaches balance, and transformation efficiency no longer raises.Esterification transformation efficiency is more than 99.6%, and reaction principle is that free fatty acids in waste grease and methyl alcohol react, reaction equation:
The present invention has positive effect: (1) accurate pressure and temperature design, and make reaction system be homogeneous system, the reaction times shortens greatly; (2) accurate pressure and temperature design, make reaction system be homogeneous system, react completely, the transformation efficiency 90 ~ 95% of relative traditional technology, the transformation efficiency of biodiesel esterification of the present invention has large breakthrough and reaches more than 99.5%.
Embodiment
(embodiment 1)
Get waste grease 100 kilograms (molecular-weight average 900), 6 kilograms of anhydrous methanols, 30 grams of phosphoric acid; Be dosed in reactor by waste grease, anhydrous methanol, phosphoric acid, stirring heating, reactor is pressurized to 0.8MPa gradually, and now temperature is elevated to 150 DEG C, reacts 30 minutes.By reaction product filtration, centrifugation, obtain fatty acid ester 99.5 kilograms.
(embodiment 2)
Get waste grease 100 kilograms (molecular-weight average 900), 6 kilograms of anhydrous methanols, 30 grams of phosphoric acid, 40 grams of sodium hydroxide; Be dosed in reactor by waste grease, anhydrous methanol, phosphoric acid, stirring heating, reactor is pressurized to 0.85MPa gradually, and now temperature is elevated to 155 DEG C, reacts 30 minutes.By reaction product filtration, centrifugation, obtain fatty acid ester 99.6 kilograms.
(embodiment 3)
Get waste grease 100 kilograms (molecular-weight average 900), 6 kilograms of anhydrous methanols, 30 grams of phosphoric acid, 40 grams of sodium hydroxide; Be dosed in reactor by waste grease, anhydrous methanol, phosphoric acid, stirring heating, reactor is pressurized to 0.83MPa gradually, and now temperature is elevated to 155 DEG C, reacts 30 minutes.By reaction product filtration, centrifugation, obtain fatty acid ester 99.5 kilograms.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the technique of a biodiesel esterification, drop into waste grease in a kettle. to react under catalyzer existent condition, it is characterized in that: during esterification, catalyzer is phosphoric acid 30g, 6 kilograms of anhydrous methanols and 100 kilograms of molecular-weight average be 900 waste grease react, temperature of reaction is 150 DEG C, and reaction pressure is 0.8MPa, and reaction system is homogeneous system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012597.7A CN103382416B (en) | 2013-01-14 | 2013-01-14 | A kind of technique of biodiesel esterification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012597.7A CN103382416B (en) | 2013-01-14 | 2013-01-14 | A kind of technique of biodiesel esterification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103382416A CN103382416A (en) | 2013-11-06 |
| CN103382416B true CN103382416B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310012597.7A Expired - Fee Related CN103382416B (en) | 2013-01-14 | 2013-01-14 | A kind of technique of biodiesel esterification |
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| Country | Link |
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| CN (1) | CN103382416B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273850B (en) * | 2014-05-29 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of promotion biodiesel synthetic method |
| CN105199857B (en) * | 2014-06-25 | 2019-04-16 | 中国石油化工股份有限公司 | A method of improving biodiesel yield |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113361A (en) * | 2006-07-27 | 2008-01-30 | 上海中油企业集团有限公司 | Method for producing biodiesel capable of being applied for industrial production |
| CN101418225A (en) * | 2007-10-23 | 2009-04-29 | 北京化工大学 | Method for preparing biodiesel by using supported solid acid combining cosolvent |
| CN101445742A (en) * | 2008-12-30 | 2009-06-03 | 浙江工业大学 | Method for preparing biodiesel by utilizing stratified and graded esterified deacidification of high acid value oil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1997727A (en) * | 2003-05-16 | 2007-07-11 | 斯蒂潘公司 | Method of making alkyl esters using pressure |
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2013
- 2013-01-14 CN CN201310012597.7A patent/CN103382416B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113361A (en) * | 2006-07-27 | 2008-01-30 | 上海中油企业集团有限公司 | Method for producing biodiesel capable of being applied for industrial production |
| CN101418225A (en) * | 2007-10-23 | 2009-04-29 | 北京化工大学 | Method for preparing biodiesel by using supported solid acid combining cosolvent |
| CN101445742A (en) * | 2008-12-30 | 2009-06-03 | 浙江工业大学 | Method for preparing biodiesel by utilizing stratified and graded esterified deacidification of high acid value oil |
Non-Patent Citations (1)
| Title |
|---|
| 磷酸催化制备生物柴油工艺探究;迟光伟等;《粮油加工》;20101231(第9期);第46页右栏第2段 * |
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| CN103382416A (en) | 2013-11-06 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Wujin District of Jiangsu city in Changzhou province 213116 Zheng Lu Wu Shun Cheng Industrial Park Road No. 1 Applicant after: Jiangsu Kate New Energy Co., Ltd. Address before: 213102 Jiangsu city of Changzhou province Qi Jian Lu ditch East No. 200 Applicant before: Jiangsu Kate New Energy Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20190114 |