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Method for dynamically separating epoxidized soybean oil at high speed

An epoxidized soybean oil, dynamic technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of low production efficiency, intermittent operation, long cycle, etc., and achieve the effect of improving production efficiency and reducing production area

Active Publication Date: 2011-11-23
新锦龙生物基材料(湖北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Epoxidized soybean oil (ESO) generally needs to be washed many times to separate impurities, and finally obtain epoxy soybean oil containing a large amount of water. Because epoxy soybean oil has a lighter specific gravity than water, the static sedimentation method is often used. Separation from epoxidized soybean oil, although the static sedimentation method can effectively achieve the effect of oil-water separation, but this method has serious shortcomings such as long cycle, large area occupation, intermittent operation, and low production efficiency, and is not suitable for industrialized large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Using crude soybean oil as a raw material to produce epoxidized soybean oil with a solvent-free method has the following steps (the amount of material added is based on 100 parts by weight of crude soybean oil):

[0020] A. Reaction of crude soybean oil with organic acid and hydrogen peroxide

[0021] After adding 100 parts by weight of soybean oil and 5 to 20 parts by weight of formic acid in a reactor equipped with a stirring paddle, a thermometer and a condenser, stir evenly at a speed of 70 to 100 r / min, and then add 40 to 50 parts by weight of hydrogen peroxide and 0.3-0.6 parts by weight of cetyl ammonium chloride mixed solution, controlled reaction temperature between 55-65°C with cold water, reacted for 5-10 hours;

[0022] B. The product of step A is neutralized with dilute alkali and washed with water to separate the fatty acid soap

[0023] Add the product obtained in the above step A, add dilute NaOH solution and continue stirring until neutral, then enter ...

Embodiment 2

[0026] Same as Example 1, except that the water content of the epoxidized soybean oil before entering the centrifuge is 30% by weight, and the temperature is raised to 100° C., and the flow rate entering the centrifuge is 8 t / hour.

Embodiment 3

[0028] Same as Example 1, except that the water content of the epoxidized soybean oil before entering the disc centrifuge is 20% by weight, and the temperature is raised to 90° C., and the flow rate entering the centrifuge is 5 t / hour.

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Abstract

The invention relates to a method for dynamically separating epoxidized soybean oil at a high speed, in particular to a method for refining epoxidized soybean oil after epoxidation preparation. The method comprises: producing epoxidized soybean oil, which has an epoxide number of more than or equal to 6.0 percent and a water content of 10 to 30 weight percent, by using crude soybean oil as a raw material and by a solvent-free process; and heating the epoxidized soybean oil to 70 to 100 DEG C, feeding the epoxidized soybean oil to a disc centrifugal separator at a flow rate of 2 to 8t / h, and after separation, obtaining semi-finished epoxidized soybean oil in which the water content is less than 2 percent. In the invention, the separation process is optimized, the oil and water separation speed of the epoxidized soybean oil (ESO) is increased, the floor area of the plant is reduced, the production efficiency and competitive power are increased, and the promotion and use are convenient.

Description

technical field [0001] The invention relates to a refining method after preparation of an epoxy plasticizer, in particular to a refining method of epoxy soybean oil prepared by epoxidation. Background technique [0002] Epoxy soybean oil (ESO) belongs to epoxy plasticizer, is a widely used polyvinyl chloride (PVC) plasticizer and stabilizer, has good heat and light stabilizing effect, compared with ester plasticizer It has the advantages of extraction resistance, migration resistance, volatility resistance, good compatibility and degradability. It is the only epoxy plasticizer that can be used in food packaging materials. It is a good substitute for phthalate plasticizers. It fully complies with the EU RoHS environmental protection directive and the US FDA food additive rules, which has attracted the attention of more and more plastic processing industries and plasticizer manufacturers. At present, the annual output and consumption of phthalate plasticizers in my country The a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/06
Inventor 莫贯田徐玉成
Owner 新锦龙生物基材料(湖北)有限公司
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