High pressure continuous hydrolysis technology for grease

A technology of oil and high pressure, which is applied in the field of oil hydrolysis to produce fatty acids, which can solve the problems of long production cycle, low degree of hydrolysis, and large investment in equipment

Inactive Publication Date: 2009-03-18
RUGAO SHUANGMA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a relatively long production cycle, large investment in equipment, and a relatively low degree of hydrolysis.

Method used

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  • High pressure continuous hydrolysis technology for grease

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Experimental program
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Effect test

Embodiment 1

[0020] As shown in the figure, the raw material deionization is continuously sent into the hydrolysis tower by the high-pressure pump. After the raw material water drops and exchanges heat with the fatty acid liquid layer, it continues to drop. Continuously entering the hydrolysis tower, the raw oil and fat enter the continuous phase through the oil-water interface after heat exchange with the hydrolyzed glycerin water during the rising process. Control the intake of high-pressure steam through the regulating valve, so that the temperature in the hydrolysis tower is controlled at 200°C, and the pressure is controlled at 4.8MPa. The liquid phase oil in the ascending process and the liquid phase water in the descending process are hydrolyzed in countercurrent contact in the tower Reaction, the reacted crude fatty acid is discharged from the top of the tower into the flash tank for degassing, and the sweet water is discharged from the bottom of the tower into the flash tank for de...

Embodiment 2

[0022] As shown in the figure, the raw material deionized water is continuously sent into the hydrolysis tower by the high-pressure pump. After the raw material water drops and exchanges heat with the fatty acid liquid phase layer, it continues to drop. Continuously entering the hydrolysis tower, the raw oil and fat enter the continuous phase through the oil-water interface after heat exchange with the hydrolyzed glycerin water during the rising process. The intake of high-pressure steam is controlled by the regulating valve, so that the temperature in the hydrolysis tower is controlled at 260°C and the pressure is controlled at 5.0MPa. The liquid phase oil in the ascending process and the liquid phase water in the descending process are hydrolyzed in countercurrent contact in the tower Reaction, the reacted crude fatty acid is discharged from the top of the tower into the flash tank for degassing, and the sweet water is discharged from the bottom of the tower into the flash ta...

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Abstract

The invention discloses a grease high-pressure continuous hydrolysis process, wherein raw grease reacts in a reaction tower at certain temperature and pressure and then is subjected to hydrolysis. The grease high-pressure continuous hydrolysis process has the advantages of easy continuous control, stable product quality, capability of reaching the degree of slight colouration or no colouration for the produced fatty acid, high hydrolysis pressure, short production period, high hydrolysis percentage which is generally more than 95 percent, simple and convenient operation, and capability of realizing automatic control and mass production.

Description

technical field [0001] The invention relates to a process for preparing fatty acid by hydrolyzing oil. Background technique [0002] At present, the known oil hydrolysis methods include atmospheric pressure catalytic hydrolysis and catalytic or non-catalytic medium pressure hydrolysis. [0003] Atmospheric pressure catalytic hydrolysis is to use acidic catalyst under long pressure, add fresh water or low-concentration glycerin wastewater, and use direct steam staged cooking to hydrolyze oil. The catalysts used in this method are usually sulfur and sulfuric acid. The disadvantages of normal pressure hydrolysis are that due to a very small amount of sulfation or sulfonation, the color of the fatty acid produced by hydrolysis is deepened, the consumption of steam is large, the reaction time of hydrolysis is long, the degree of hydrolysis is low, the content of glycerin in wastewater is low, and the cost of glycerin recovery is increased. . It also contains sulfuric acid and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C1/04C07C27/02
Inventor 成取林孙刚姜伟荣
Owner RUGAO SHUANGMA CHEM
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