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Semi-hydrogenated fatty acid and preparation method of the semi-hydrogenated fatty acid

A semi-hydrogenation and fatty acid technology, which is applied in the preparation/refining of fatty acids, fatty acid production, etc., can solve the problems such as the inability to adjust the proportion, the limited space for the development of the surfactant industry, and the inability to meet the refinement requirements.

Pending Publication Date: 2020-07-07
丰益油脂科技(连云港)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, subject to unhydrogenated fatty acids, the ratio between various unsaturated acids cannot be adjusted, and the structure of unsaturated acids cannot be changed. Therefore, these unhydrogenated fatty acid products and fully hydrogenated stearic acid series products are mixed and blended. The fatty acid products produced cannot meet the refined requirements of the surfactant industry for the structure of fatty acid products, which limits the development space of the surfactant industry

Method used

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  • Semi-hydrogenated fatty acid and preparation method of the semi-hydrogenated fatty acid
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  • Semi-hydrogenated fatty acid and preparation method of the semi-hydrogenated fatty acid

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no. 1 approach

[0126] The preparation method of semihydrogenated fatty acid of the present invention is characterized in that, comprises the following steps in order:

[0127] In the hydrolysis step, the raw material oil is hydrolyzed to obtain a hydrolyzate;

[0128] In the half hydrogenation step, the product obtained in the previous step is half hydrogenated.

[0129] The hydrolysis step is a countercurrent hydrolysis step. In the hydrolysis step, the hydrolysis temperature is 240-260°C. In the hydrolysis step, the hydrolysis pressure is 4.5-5.5 MPa. Therefore, the hydrolysis step can also be referred to as a high temperature and high pressure countercurrent hydrolysis step.

[0130] In the hydrolysis step, the raw materials and deionized water are sent into the high-pressure hydrolysis tower in a countercurrent manner, and are fully contacted on the trays of the hydrolysis tower to generate a hydrolysis reaction. No catalyst is required in the hydrolysis step. Among the obtained rea...

no. 2 approach

[0162] The preparation method of semihydrogenated fatty acid of the present invention is characterized in that, comprises the following steps in order:

[0163] In the hydrolysis step, the raw material oil is hydrolyzed to obtain a hydrolyzate;

[0164] In the half hydrogenation step, the product obtained in the previous step is half hydrogenated.

[0165] The hydrolysis step is a countercurrent hydrolysis step. In the hydrolysis step, the hydrolysis temperature is 240-260°C. In the hydrolysis step, the hydrolysis pressure is 4.5-5.5 MPa. Therefore, the hydrolysis step can also be referred to as a high temperature and high pressure countercurrent hydrolysis step.

[0166] In the hydrolysis step, the raw materials and deionized water are sent into the high-pressure hydrolysis tower in a countercurrent manner, and are fully contacted on the trays of the hydrolysis tower to generate a hydrolysis reaction. No catalyst is required in the hydrolysis step. Among the obtained rea...

no. 3 approach

[0193] The preparation method of semihydrogenated fatty acid of the present invention is characterized in that, comprises the following steps in order:

[0194] In the hydrolysis step, the raw material oil is hydrolyzed to obtain a hydrolyzate;

[0195] In the half hydrogenation step, the product obtained in the previous step is half hydrogenated.

[0196] The hydrolysis step is a countercurrent hydrolysis step. In the hydrolysis step, the hydrolysis temperature is 240-260°C. In the hydrolysis step, the hydrolysis pressure is 4.5-5.5 MPa. Therefore, the hydrolysis step can also be referred to as a high temperature and high pressure countercurrent hydrolysis step.

[0197] In the hydrolysis step, the raw materials and deionized water are sent into the high-pressure hydrolysis tower in a countercurrent manner, and are fully contacted on the trays of the hydrolysis tower to generate a hydrolysis reaction. No catalyst is required in the hydrolysis step. Among the obtained rea...

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Abstract

The invention relates to a semi-hydrogenated fatty acid and a preparation method of the semi-hydrogenated fatty acid. The preparation method of the semi-hydrogenated fatty acid is characterized by comprising the following steps in sequence: a hydrolysis step of hydrolyzing raw oil to obtain a hydrolysate; and a semi-hydrogenation step of semi-hydrogenating the product obtained in the previous step. According to the preparation method of the semi-hydrogenated fatty acid, the semi-hydrogenated fatty acid with improved thermal stability can be prepared.

Description

technical field [0001] The invention relates to a semihydrogenated fatty acid and a preparation method of the semihydrogenated fatty acid. Background technique [0002] In recent years, with the rapid development of the oil technology and chemical industry, in order to meet the needs of downstream industries, various types of fatty acids have appeared on the market. These fatty acids have different compositions and functions, but they can be generally divided into two categories, unhydrogenated distilled fatty acid products and fully hydrogenated stearic acid series products. [0003] The composition of unhydrogenated distilled fatty acid products is completely limited by the raw materials used and cannot be finely formulated. The ratio of various fatty acids, especially unsaturated fatty acids, is almost fixed. The iodine value, the characteristic indicator of the unsaturated characteristics of the reaction product, is completely limited by the content of unsaturated acid ...

Claims

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Application Information

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IPC IPC(8): C11C1/04C11C1/10
CPCC11C1/04C11C1/10C11C1/103
Inventor 陈学松赵佳徐恩好梁国臣
Owner 丰益油脂科技(连云港)有限公司
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