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Production technology of low-cold-point oleic acid

A production process, oleic acid technology, applied in the field of low freezing point oleic acid production process, can solve the problems of oleic acid difficulties, high freezing point, etc.

Inactive Publication Date: 2015-06-24
天门市诚鑫化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of production technology of low freezing point oleic acid, to improve the oleic acid that contains more stearic acid in the oleic acid that existing hydrolytic rectification method makes, and freezing point is higher, this method wants to obtain lower Oleic acid at freezing point is more difficult and other technical problems

Method used

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  • Production technology of low-cold-point oleic acid
  • Production technology of low-cold-point oleic acid
  • Production technology of low-cold-point oleic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of production technology of low freezing point oleic acid, comprises the steps:

[0019] A. Pump the industrial oleic acid into the heating tank, heat the material in the heating tank to 65°C and keep it for 50 minutes, then send the heated industrial oleic acid into the freezing crystallization tank;

[0020] B. Stir the materials in the frozen crystallization kettle at a speed of 20 rpm, and feed water at 40°C into the jacket of the frozen crystallization kettle to cool down the industrial oleic acid for 180 minutes. Cool down to 45°C and maintain this temperature for 70 minutes;

[0021] C. Reduce the stirring speed of the freezing and crystallization kettle, the rotating speed is 10 rpm, feed water at 30-35°C into the jacket of the freezing crystallization kettle, and cool down the materials in the kettle for 150 minutes, and put the materials in the kettle Cool down to 25°C and maintain this temperature for 40 minutes;

[0022] D. Stir the ma...

Embodiment 2

[0025] Embodiment 2: a kind of production technology of low freezing point oleic acid, comprises the steps:

[0026] A. Pump the industrial oleic acid into the heating tank, heat the material in the heating tank to 67°C for 40 minutes, and then send the heated industrial oleic acid into the freezing crystallization tank;

[0027] B. Stir the materials in the frozen crystallization kettle at a speed of 25 rpm, and feed water at 45°C into the jacket of the frozen crystallization kettle to cool down the industrial oleic acid for 165 minutes, and the materials in the kettle Cool down to 47°C and maintain this temperature for 60 minutes;

[0028] C. Reduce the stirring speed of the frozen crystallization kettle, the rotating speed is 10 rev / min, feed water at 33°C into the jacket of the frozen crystallization kettle, and cool the materials in the kettle for 135 minutes, and cool the materials in the kettle to 27°C, and maintain this temperature for 30 minutes;

[0029] D. Stir th...

Embodiment 3

[0032] Embodiment 3: a kind of production technology of low freezing point oleic acid, comprises the steps:

[0033] A. Pump the industrial oleic acid into the heating tank, heat the material in the heating tank to 70°C for 30 minutes, and then send the heated industrial oleic acid into the freezing crystallization tank;

[0034] B. Stir the materials in the frozen crystallization kettle at a speed of 30 rpm, and feed water at 40-50°C into the jacket of the frozen crystallization kettle to cool down the industrial oleic acid for 150 minutes. Cool the material inside to 50°C and maintain this temperature for 50 minutes;

[0035] C. Reduce the stirring speed of the frozen crystallization kettle, the rotating speed is 15 rev / min, feed water at 35°C into the jacket of the frozen crystallization kettle, and cool the materials in the kettle for 120 minutes, and cool the materials in the kettle to 30°C, and maintain this temperature for 20 minutes;

[0036] D. Stir the materials in...

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Abstract

The invention discloses a production technology of low-cold-point oleic acid. The production technology of the low-cold-point oleic acid comprises the following steps of conveying industrial oleic acid into a heating tank through a pump; heating and insulating the industrial oleic acid; then feeding the industrial oleic acid in a freezing crystallization kettle; repeatedly cooling down the industrial oleic acid step by step and continuously stirring the industrial oleic acid so that solid grease in the industrial oleic acid is crystallized; continuously separating out high-cold-point oleic acid from mixture so that oil and grease of the mixture can be separated from each other; and filtering the mixture by using a diaphragm filter press so as to obtain the low-cold-point oleic acid. The cold point of the oleic acid is below 8 DEG C, the state of the oleic acid is stable at the low air temperature, and turbidity and layering can be avoided.

Description

technical field [0001] The invention relates to a production process of oleic acid, in particular to a production process of low freezing point oleic acid. Background technique [0002] Industrial oleic acid is a mixture of palmitic acid, stearic acid, oleic acid, linoleic acid and linolenic acid, among which oleic acid, linoleic acid and linolenic acid are unsaturated acids, which are the main components of industrial oleic acid. Fatty acid is a saturated fatty acid with less content. The freezing point of oleic acid products mainly depends on the content of saturated fatty acid, especially the content of stearic acid. The lower the content, the lower the freezing point. Palmitic acid in oleic acid is C16 fatty acid, and stearic acid, oleic acid, linoleic acid and linolenic acid are all C18 fatty acids. Now the production process of oleic acid is mainly produced by hydrolysis-rectification method, and the hydrolyzed crude fatty acid is obtained by distillation Mixed fatty...

Claims

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Application Information

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IPC IPC(8): C11C3/00
CPCC11C3/00
Inventor 成取林
Owner 天门市诚鑫化工有限公司
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