CN1223575C - Process for producing mixed fatty acid methyl ester using plant oil leftover - Google Patents
Process for producing mixed fatty acid methyl ester using plant oil leftover Download PDFInfo
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- CN1223575C CN1223575C CN 02151765 CN02151765A CN1223575C CN 1223575 C CN1223575 C CN 1223575C CN 02151765 CN02151765 CN 02151765 CN 02151765 A CN02151765 A CN 02151765A CN 1223575 C CN1223575 C CN 1223575C
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Abstract
The present invention relates to a technological method for producing mixed fatty acid methyl ester with the leftovers of vegetable oil, which comprises dilution, cracking steam stripping hydrolyzation, esterification, cleaning and distillation. The present invention enables poured leftovers used as waste generated in the extraction of vegetable oil to become useful mixed fatty acid methyl ester through processing activity and extraction. Resources are saved, the problem of pollution to the environment because of a large amount of leftovers produced in the extraction of vegetable oil presently is solved, and wastes are changed into valuables.
Description
Technical field:
The present invention relates to a kind of processing method of producing mixed methyl aliphatic ester with plant oil leftover.
Background technology:
In vegetable oil refines, all can produce a large amount of plant oil leftovers, except some is used to make soap, all the other major parts are then toppled over as discarded object, and the one, caused the waste of resource, but also environment has been caused severe contamination.
Technology contents:
The purpose of this invention is to provide a kind of process of producing mixed methyl aliphatic ester with plant oil leftover, turn waste into wealth, to economize on resources, eliminate the problem of environmental pollution that produces in the present vegetable oil refinement.
Processing method of the present invention comprises following process:
Dilution: get 100 parts of plant oil leftovers (weight portion, below all with), add 50～100 parts of water, heat to 70～90 ℃, the sieve removal foreign material in the most well 1～3mm of the mixture aperture after the dilution;
Cracking: add ZnOl～2 part, Al
2O
30.5～1 part, AlCI
30.5～1 part as catalyst, inserts catalytic cracker, heats to 360～520 ℃ and carries out continuous cracking;
The stripping hydrolysis: directly with 420～500 ℃ of water vapor strippings, moisture content is isolated in the mixing gas that again stripping is gone out cooling, gets cracking stock oil with the mixture after the above-mentioned cracking;
Esterification: get 100 parts of above-mentioned cracking stock oil and mix with 15～25 parts of methyl alcohol, 3～6 parts of vitriol oils, with 50～75 rev/mins speed stirring, under 65～85 ℃ of temperature, 100～200KPa pressure 8～12 hours;
Clean: the mixture after above-mentioned per 100 parts of esterifications adds 200～400 parts of water, heats to 75～95 ℃ and reclaims methyl alcohol, and then add 3～6 parts of unslaked limes and carry out neutralization reaction;
Distillation: the remaining mixture after will cleaning is inserted 1～15KPa pressure, 160～350 ℃ of following distillations of temperature, promptly obtains mixed methyl aliphatic ester of the present invention.
The leftover bits and pieces of toppling over as discarded object that the present invention produces during vegetable oil is refined, processing is refined becomes useful mixed methyl aliphatic ester, both saved resource, eliminated again a large amount of leftover bits and pieces that present vegetable oil produces in refining to the pollution problem that environment causes, turned waste into wealth.
Embodiment:
Embodiment 1: get 100 parts of plant oil leftovers, add 50 parts of water, stir and heat to 75 ℃, cross the sieve in 3mm aperture and remove foreign material, add ZnO1 part, Al
2O
31 part, AlCI
30.5 part, heat to 400 ℃, enter pyrolysis furnace with infusion continuously and carry out cracking, extract out from the outlet of the pyrolysis furnace oil after with cracking simultaneously, remain on 15 minutes from being injected into the process that is drawn out of; Directly with 500 ℃ of water vapour strippings, the mixing gas that again stripping is gone out is cooled to below 100 ℃, condensation and separation of moisture content, gets cracking stock oil with the mixture after the above-mentioned cracking; Get 100 parts of above-mentioned cracking stock oil and mix with 15 parts of methyl alcohol, 6 parts of concentrated sulfuric acids, with 70 rev/mins speed stirring, esterification is 12 hours under 80 ℃ of temperature, 100KPa pressure; Mixture after above-mentioned per 100 parts of esterifications adds 200 parts of water, heats to 90 ℃, and methyl alcohol is reclaimed in gasification, and then adds 6 parts of sulfuric acid in the neutralization with lime mixture; Mixture after will cleaning is at last inserted 5KPa pressure, 200 ℃ of lower distillations of temperature, namely obtains mixed methyl aliphatic ester of the present invention.
Embodiment 2: get 100 parts of plant oil leftovers, add 100 parts of water, stir and heat to 90 ℃, cross the sieve in 1mm aperture and remove foreign material, add ZnO2 part, Al
2O
31 part, AlCI
30.5 part, heat to 380 ℃, enter pyrolysis furnace with infusion continuously and carry out cracking, extract the time that kept 15 minutes from being injected into the process that is drawn out of out from the outlet of the pyrolysis furnace oil after with cracking simultaneously; Directly with 450 ℃ of water vapour strippings, moisture content is isolated in the mixing gas that again stripping is gone out cooling, gets cracking stock oil with the mixture after the above-mentioned cracking; Get 100 parts of above-mentioned cracking stock oil and mix with 20 parts of methyl alcohol, 5 parts of concentrated sulfuric acids, with 70 rev/mins speed stirring, under 90 ℃ of temperature, 200KPa pressure esterification 1O hour; Mixture after above-mentioned per 100 parts of esterifications adds 400 parts of water, heats to 80 ℃, and methyl alcohol is reclaimed in gasification, and then adds 5 parts of sulfuric acid in the neutralization with lime mixture; Mixture after will cleaning is at last inserted 10KPa pressure, 350 ℃ of lower distillations of temperature, namely obtains mixed methyl aliphatic ester of the present invention.
Embodiment 2: get 100 parts of plant oil leftovers, add 80 parts of water, stir and heat to 90 ℃, add ZnO1 part, Al
2O
31 part, AlCI
31 part, heat to 500 ℃, enter pyrolysis furnace with infusion continuously and carry out cracking, extract the time that kept 15 minutes from being injected into the process that is drawn out of out from the outlet of the pyrolysis furnace oil after with cracking simultaneously; Directly with 450 ℃ of water vapour strippings, moisture content is isolated in the mixing gas that again stripping is gone out cooling, gets cracking stock oil with the mixture after the above-mentioned cracking; Get above-mentioned cracking stock oil 10O part and mix with 20 parts of methyl alcohol, 5 parts of concentrated sulfuric acids, stir with 70 rev/mins speed, esterification is 10 hours under 90 ℃ of temperature, 200KPa pressure; Mixture after above-mentioned per 100 parts of esterifications adds 400 parts of water, heats to 80 ℃, and methyl alcohol is reclaimed in gasification, and then adds 5 parts of sulfuric acid in the neutralization with lime mixture; Mixture after will cleaning is at last inserted 10KPa pressure, 350 ℃ of lower distillations of temperature, namely obtains mixed methyl aliphatic ester of the present invention.
Claims (2)
1, a kind of processing method of producing mixed methyl aliphatic ester with plant oil leftover is characterized in that comprising following process:
Dilution: get 100 parts of plant oil leftovers (weight portion, below all with), add 50～100 parts of water, heat to 70～90 ℃;
Cracking: add ZnO1～2 part, Al
2O
30.5～1 part, AlCI
30.5～1 part as catalyst, inserts catalytic cracker, heats to 360～520 ℃ and carries out continuous cracking;
The stripping hydrolysis: directly with 420～500 ℃ of water vapor strippings, moisture content is isolated in the mixing gas that again stripping is gone out cooling, gets cracking stock oil with the mixture after the above-mentioned cracking;
Esterification: get 100 parts of above-mentioned cracking stock oil and mix with 15～25 parts of methyl alcohol, 3～6 parts of vitriol oils, with 50～75 rev/mins speed stirring, under 65～85 ℃ of temperature, 100～200KPa pressure 8～12 hours;
Clean: the mixture after above-mentioned per 100 parts of esterifications adds 200～400 parts of water, heats to 75～95 ℃ and reclaims methyl alcohol, and then add 3～6 parts of unslaked limes and carry out neutralization reaction;
Distillation: the remaining mixture after will cleaning is inserted under 1～15KPa pressure, 160～350 ℃ of temperature and is distilled.
2, processing method as claimed in claim 1 is characterized in that mixture after the described dilution crosses the sieve in 1～3mm aperture and remove foreign material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02151765 CN1223575C (en) | 2002-12-27 | 2002-12-27 | Process for producing mixed fatty acid methyl ester using plant oil leftover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02151765 CN1223575C (en) | 2002-12-27 | 2002-12-27 | Process for producing mixed fatty acid methyl ester using plant oil leftover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1511822A CN1511822A (en) | 2004-07-14 |
| CN1223575C true CN1223575C (en) | 2005-10-19 |
Family
ID=34234497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02151765 Expired - Fee Related CN1223575C (en) | 2002-12-27 | 2002-12-27 | Process for producing mixed fatty acid methyl ester using plant oil leftover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1223575C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215233B (en) * | 2008-01-09 | 2012-05-23 | 江门市江海区嘉诺化工发展有限公司 | Technique for producing fatty acid methyl ester |
| CN103666769B (en) * | 2013-12-10 | 2015-04-22 | 浙江嘉澳环保科技股份有限公司 | Method for extracting fatty acid methyl ester from vegetable pitch |
-
2002
- 2002-12-27 CN CN 02151765 patent/CN1223575C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1511822A (en) | 2004-07-14 |
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