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Method used for producing epoxy soybean oil taking crude soybean oil as raw material

A technology of epoxidizing soybean oil and soybean wool, applied in the direction of organic chemistry, etc., can solve the problem of high production cost and achieve the effect of strong reactivity

Inactive Publication Date: 2017-05-24
CHONGQING JUHONG GRAIN OIL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art uses environmentally friendly refined soybean oil as the main material for producing epoxidized soybean oil, so the production cost is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of method that takes crude soybean oil as raw material to produce epoxy soybean oil, specifically as follows:

[0016] (1) Add 85% phosphoric acid solution with an oil weight of 0.3% to the raw material four-grade soybean crude oil (iodine value 128%, acid value 1.3mgKOH / g), keep the temperature at 50°C and mix for 10 minutes, then settle for 2 hours Remove the lower layer of oil, the supernatant is treated with a membrane to remove the remaining phospholipids, then the temperature is raised to 80°C, and the temperature is maintained for 30 minutes, then cooled to 50°C, and mixed with dilute potassium hydroxide aqueous solution to reduce the acid value to 0.8, the concentration of lye is 15Be', the amount of lye is calculated according to the acid value, the calculation formula is: actual amount of alkali used = oil weight × acid value × 1.3 × 10 -3 / lye mass fraction, the temperature of the mixture is raised to 100°C and kept for 45 minutes, and finally enters ...

Embodiment 2

[0020] A kind of method that takes crude soybean oil as raw material to produce epoxy soybean oil, specifically as follows:

[0021] (1) Add 85% phosphoric acid solution with an oil weight of 0.3% to the raw material four-grade soybean crude oil (iodine value 128%, acid value 1.3mgKOH / g), keep the temperature at 50°C and mix for 10 minutes, then settle for 2 hours Remove the lower layer of oil, the supernatant is treated with a membrane to remove the remaining phospholipids, then the temperature is raised to 90°C, and the temperature is maintained for 30 minutes, then cooled to 50°C, and mixed with dilute potassium hydroxide aqueous solution to reduce the acid value to 0.8, and the concentration of the lye is 20Be', the amount of lye is calculated according to the acid value, the calculation formula is: actual amount of alkali used = oil weight × acid value × 1.3 × 10 -3 / lye mass fraction, the temperature of the mixture is raised to 100°C and kept for 45 minutes, and finally...

Embodiment 3

[0025] A kind of method that takes crude soybean oil as raw material to produce epoxy soybean oil, specifically as follows:

[0026] (1) Add an 85% phosphoric acid solution with an oil weight of 0.3% to the raw material four-grade soybean crude oil (iodine value 128%, acid value 1.3mgKOH / g), keep the temperature at 30°C and mix for 10 minutes, then settle for 2 hours Remove the lower layer of oil, the supernatant is treated with a membrane to remove the remaining phospholipids, then the temperature is raised to 70°C, and the temperature is maintained for 30 minutes, then cooled to 20°C, and mixed with dilute potassium hydroxide aqueous solution to reduce the acid value to 0.7, the concentration of lye is 10Be', the amount of lye is calculated according to the acid value, the calculation formula is: actual amount of alkali used = oil weight × acid value × 1.3 × 10 -3 / lye mass fraction, the temperature of the mixture is raised to 100°C and kept for 45 minutes, and finally ente...

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Abstract

The invention provides a method used for producing epoxy soybean oil taking crude soybean oil as a raw material. The method comprises following steps: 1, grade 4 crude soybean oil is mixed with phosphoric acid, and is subjected to sedimentation until oil foot separation is realized, and an obtained oil layer is subjected to membrane treatment so as to remove residual phospholipid, is heated to 50 to 90 DEG C, is subjected to constant treatment for 10 to 30min, is cooled, and then is mixed with a diluted alkali solution; an obtained system is subjected to constant treatment for 45min at 100 DEG C, and is subjected to centrifugation so as to obtained treated crude soybean oil; 2, under microwave treatment, urea peroxide is added into the treated crude soybean oil dropwise for epoxide reaction, neutralization is carried out with the diluted alkali solution, and finished product epoxy soybean oil is obtained via water washing, oil-water separation, and dehydration. The epoxy value of the obtained epoxy soybean oil is capable of reaching 6.0 to 6.5, and acid value is reduced to be lower than 0.6mgKOH / g.

Description

technical field [0001] The invention relates to a method for producing epoxidized soybean oil from soybean crude oil. Background technique [0002] Epoxidized soybean oil is an epoxy plasticizer developed and applied earlier at home and abroad. It has excellent thermal stability, light stability, water resistance and oil resistance. It has developed into the third largest type of plasticizer and is widely used. In non-toxic PVC film, drug packaging, plastic doors and windows, pipes, interior decoration materials, wires and cables, medical appliances, children's toys, stationery and other products. [0003] The prior art all uses environmentally friendly refined soybean oil as the main material for producing epoxidized soybean oil, so the production cost is very high. In order to reduce production costs and increase market competitiveness, finding low-cost production raw materials to replace refined soybean oil has become a research and development issue for various epoxy so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/42C07D301/03
CPCC07D303/42C07D301/03
Inventor 杨勇
Owner CHONGQING JUHONG GRAIN OIL DEV
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