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Continuous production process and system of epoxidized soybean oil

A technology of epoxidized soybean oil and production process, which is applied in the directions of organic chemistry, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of unsuitable control of product quality, reduction of product yield, and spraying of materials in reaction kettles, etc. The effect of shortening the epoxidation time, improving the epoxy value of the product, and improving the time efficiency

Pending Publication Date: 2022-01-14
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] At present, the domestic production of epoxidized soybean oil is carried out in a batch production process. The epoxy reaction is carried out through a tank-type stirred reactor, and the water separation treatment is carried out through a water separation tank or a centrifuge. After the water separation, alkali washing, water washing, and finally dehydration are carried out. To obtain the finished product of epoxy soybean oil, the use of alkali washing to reduce acidity will cause saponification, which is not conducive to washing and water separation, and reduces the product yield. At the same time, impurities such as sodium ions will be introduced, and the volume resistivity will be reduced. The presence of soap in epoxidized soybean oil will increase the impurities in epoxidized soybean oil and affect the flash point, product yield, volume resistivity and other indicators of epoxidized soybean
At present, the epoxy soybean oil is prepared by intermittent batch method, the product quality is greatly affected by human operation, the product quality is not suitable for control, the energy consumption per unit of production capacity is high, the post-treatment operation is complicated, it is easy to generate a large amount of waste water, and the production cost is high
Epoxy reaction is a strong exothermic reaction. In the process of adding hydrogen peroxide and formic acid, the initial reaction generates a lot of heat. Due to the limitation of the heat exchange capacity of the reactor, it needs to be added slowly in multiple times, and its temperature needs to be strictly controlled, especially in summer production. Temperature control is difficult, and it is easy to overheat, which affects product quality. In serious cases, safety accidents such as reactor spraying may occur

Method used

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  • Continuous production process and system of epoxidized soybean oil
  • Continuous production process and system of epoxidized soybean oil
  • Continuous production process and system of epoxidized soybean oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The steps of continuous production processes of epoxy soybean oil are as follows:

[0061] (1) Epoxidized reaction unit: Select the reactor of the specification below, after the power is stable, and the substantial reaction is carried out according to the amount of material and process parameters of Table 1:

[0062] The first epoxy reactor: the reaction temperature is controlled at 65 ° C, and the discharge is labeled as an epoxidized soybean oil-1, and the epoxide value of the epoxidated soybean oil-1 is 5.6, the iodine value is 21.2;

[0063] The second epoxy reactor: the reaction temperature is controlled at about 80 ° C, and the discharge is marked as an epoxidated soybean oil-2, and the epoxy value of epoxy soybean oil is 6.0, the iodine value is 10.1;

[0064] The third cyclic oxygen reactor: the reaction temperature is controlled at about 80 ° C, the discharge is labeled as epoxidized soybean oil-3, the epoxy value of epoxy soybean oil-3 is 6.3, the iodine value is ...

Embodiment 2

[0074] The steps of continuous production methods of epoxy soybean oil are as follows:

[0075] (1) epoxidation reaction unit: Select the reactor of the specification of Table 2, after the power is stable, the reaction is carried out according to the amount of material and process parameters of Table 1:

[0076] The first epoxy reactor: the reaction temperature was controlled at 65 ° C, the discharge labeled epoxidated soybean oil-1, the epoxide value of the epoxidated soybean oil-1 was 5.8, and the iodine value was 18.3;

[0077] The second epoxy reactor: The reaction temperature is controlled at 80 ° C, the discharge is marked as epoxidated soybean oil-2, and the epoxy soybean oil-2 is 6.1, the iodine value is 8.0;

[0078] The third cyclic oxygen reactor: The reaction temperature is controlled at 80 ° C, the discharge labeled epoxidated soybean oil-3, the epoxy value of epoxy soybean oil is 6.4, and the iodine value is 2.8;

[0079] Table 2

[0080]

[0081] (2) The epoxy soy...

Embodiment 3

[0084] The steps of continuous production methods of epoxy soybean oil are as follows: (1) epoxidation reaction unit: Select the reaction kettle of the specification of Table 3. After the power is stable, the substation amount and process parameters of Table 3 are subjected to epoxidation:

[0085] The first epoxy reactor: The reaction temperature was controlled at 65 ° C, the discharge labeled epoxidated soybean oil-1, the epoxide value of the epoxidated soybean oil-1 was 6.0, the iodine value was 13.0;

[0086] The second epoxy reactor: the reaction temperature is controlled at 80 ° C, the discharge is marked as epoxidated soybean oil-2, the epoxy value of epoxy soybean oil is 6.3, and the iodine value is 6.2;

[0087] The third cycloal oxygen reactor: The reaction temperature is controlled at 80 ° C, the discharge labeled epoxidated soybean oil-3, epoxy soybean oil-3 epoxy value is 6.5, and the iodine value is 2.9;

[0088] table 3

[0089]

[0090] (2) The epoxy soybean oil-...

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Abstract

The invention discloses a continuous production process and system of epoxidized soybean oil. The continuous production process comprises an epoxidation step, a water diversion treatment step, a deacidification treatment step and a dehydration treatment step which are carried out in sequence. The epoxidation treatment is continuously carried out in two or more epoxidation reaction kettles which are arranged in series in the epoxidation step. Continuous water separation treatment is conducted on the epoxidized material through an overflow tank, deacidification treatment is conducted in a stripping tower after water separation, dehydration treatment is conducted in a vacuum dehydration tower after the acid value reaches the standard, and finally filter pressing is conducted to obtain the epoxidized soybean oil finished product. According to the method, a whole-section continuous production process is adopted, the reaction conditions are mild, various production indexes are controllable, the product quality is good, the process is simple, the requirement on production equipment is not high, and industrial production is easy.

Description

Technical field [0001] The present invention belongs to the production of plasticizer production, and in particular, the present invention relates to the process of continuous production and post-treatment of epoxy soybean oil. Background technique [0002] Epoxy soybean oil is currently used in a wide range of non-toxic non-bleid environmental plastic plastic plasticizers, which have a double performance of plasticizing and thermally stable, and non-toxic, safe and environmentally friendly, so it is favored by the plastics industry. Plastics, coatings, new polymer materials, and rubber and other industrial areas are widely used. With the improvement of environmental awareness of the world, the toxicity of plasticizers is increasingly concerned; the plasticizer phthalate products have banned them in medical and food packaging, daily necessities due to patients with cancer. Use plastic products such as toys. And due to the tight oil supply, the international, domestic plasticizer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/16C07D301/32C07D303/42B01D36/00B01J19/00B01J19/18
CPCC07D301/16C07D301/32C07D303/42B01J19/18B01J19/1862B01J19/00B01D36/003B01D36/008
Inventor 沈健傅俊红单国明沈海根周佳辰
Owner 浙江嘉澳环保科技股份有限公司