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Method for co-production of bio-diesel and vitamin E, phytosterol by using plant oil

A technology for vegetable oil and biodiesel, applied in the field of oleochemistry, can solve the problems of cumbersome preparation process, unchangeable process, complicated process, etc., and achieves the effects of good economy, simple production process and simplified process flow

Inactive Publication Date: 2008-09-03
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of deodorized effluent is cumbersome, that is, vegetable oil must be obtained through multiple processes such as degumming, deacidification, decolorization, and deodorization. There are problems such as complex process, unchangeable process, and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) degumming, after soybean oil is heated to 85 ℃, add 90 ℃ hot water, consumption is 10% (weight) of vegetable oil consumption, after stirring and mixing, separate oil foot and grease.

[0019] (2) Methyl esterification, with fats and oils by weight ratio: methyl alcohol: concentrated sulfuric acid is 40: 6: 1, is 70 ℃ under stirring and reflux temperature and reacts for 4 hours.

[0020] (3) Wash with water, add the above-mentioned materials to water, the dosage is 3 times (weight) of the methanol dosage, let stand and separate, remove the mixed phases such as glycerin, methanol, water and sulfuric acid in the lower layer, and then wash twice with hot water at 95°C to neutral.

[0021] (4) Cold analysis, the washed material is subjected to cold analysis, rapidly cooled to 1° C. under stirring, and kept for 20 hours to precipitate most of the sterols. The separated sterols are washed with acetone and dried to obtain white sterol products.

[0022] (5) Dehydration, t...

Embodiment 2

[0025] (1) degumming, after rapeseed oil is heated to 80 ℃, add 95 ℃ of hot water, consumption is 15% (weight) of vegetable oil consumption, after stirring and mixing, separate oil foot and grease.

[0026] (2) Methyl esterification, by weight ratio of oil: methanol: concentrated sulfuric acid is 200: 30: 6, stirring and reflux temperature is 70 ℃ and reacted for 4.5 hours.

[0027] (3) Washing with water, adding the above materials to water, the dosage is 2.5 times (weight) of the methanol dosage, standing for stratification, removing the mixed phases such as glycerin, methanol, water, sulfuric acid in the lower layer, and washing once with hot water at 90°C to neutral.

[0028] (4) Cold analysis, the washed material is subjected to cold analysis, rapidly cooled to -1°C under stirring, and kept for 20 hours to precipitate most of the sterols. The separated sterols are washed with acetone and dried to obtain white sterol products.

[0029] (5) Dehydration, the material after...

Embodiment 3

[0032] (1) degumming, after cottonseed oil is heated to 90 ℃, add 93 ℃ hot water, consumption is 20% (weight) of vegetable oil consumption, after stirring and mixing, separate oil foot and grease.

[0033] (2) Methyl esterification, by weight oil: methyl alcohol: concentrated sulfuric acid is 180: 30: 5, is 67 ℃ under stirring and reflux temperature and reacts for 5 hours.

[0034] (3) Washing with water, the above materials are added to water, the amount is 3 times (weight) of the amount of methanol, let stand and separate, remove the mixed phases such as glycerin, methanol, water, sulfuric acid in the lower layer, and then wash twice with hot water at 88°C to neutral.

[0035] (4) Cold analysis, the washed material is subjected to cold analysis, rapidly cooled to 2° C. under stirring, and kept for 18 hours to precipitate most of the sterols. The separated sterols are washed with acetone and dried to obtain white sterol products.

[0036] (5) Dehydration, the material after...

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PUM

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Abstract

The invention proposes a biological diesel and vitamin E, sterol combined production by vegetable fat, which pertains to oil chemistry field. The invention process includes steps of degumming, methyl esterification, water washing, cold precipitation, dehydration, molecular distillation. The invention uses vegetable fat as raw material, directly esterify triglyceride and free fatty acids together without refining step, and adopt molecular distillation to obtain biological diesel and natural vitamin E, sterol simultaneously, which is a novel production process that simplify procedures, reduces production cost and increases economic benefit.

Description

technical field [0001] The invention relates to a method for co-producing biodiesel, vitamin E and sterol with vegetable oil, which belongs to the field of oil chemistry. Background technique [0002] Biodiesel has attracted more and more attention because of its unique environmental protection and regeneration properties. At present, biodiesel is mainly produced from animal and vegetable oils at home and abroad. Such as CN1238468C, CN1181161C, CN1197937C, CN1626621A etc. have all reported the method for producing biodiesel with animal and vegetable oil as raw material, but above-mentioned method all does not consider the comprehensive utilization of vitamin E, sterol in vegetable oil. [0003] At present, the production of natural vitamin E and sterols at home and abroad mainly uses the deodorized by-products of vegetable oil refining as raw materials. Such as CN1418877A, CN1108299C, CN1037769C etc. have all reported the method for raw material production vitamin E and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00C07D311/72C07J75/00
CPCY02E50/10Y02P30/20
Inventor 黄凤洪李文林
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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