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Process method for producing epoxidized soybean oil by using crude soybean oil as raw material

A technology of epoxidized soybean oil and soybean hair, which is applied in the production of fatty acids and chemical modification of fatty acids, can solve the problems of high production costs and achieve the effect of strong reactivity

Active Publication Date: 2014-04-16
浙江嘉澳环保科技股份有限公司
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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 for producing epoxidized soybean oil by using crude soybean oil as a raw material. The method is characterized by comprising the following steps of: 1, mixing four grades of crude soybean oil with phosphoric acid, settling until separation of oil foots, removing the remaining phospholipid from an oil layer through membrane treatment, then raising the temperature to be between 50 and 90 DEG C, keeping the temperature constant for 10 to 30 minutes, cooling and mixing with thin lye, and after mixing, keeping the temperature of the system constant at 100 DEG C for 45 minutes and then performing centrifugal separation to obtain treated crude soybean oil; and 2, under a microwave condition, dripping urea peroxide into the oil obtained in the step 1 for epoxidation, neutralizing the mixture with thin lye, performing water-washing, separating the oil from the water, and dehydrating to obtain finished epoxidized soybean oil. The epoxide number of the finished epoxidized soybean oil obtained by the method can be between 6.0 and 6.5 and the acid number is reduced to be below 0.6 mgKOH / 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 Patents(China)
IPC IPC(8): C11C3/00
Inventor 沈健诸雪平
Owner 浙江嘉澳环保科技股份有限公司
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