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A method for preparing pharmaceutical grade soybean linoleic acid by thin film distillation

A technology of linoleic acid and film, which is applied in the preparation/refining of fatty acids, the separation/purification of carboxylic acid compounds, and the production of fatty acids, and can solve problems such as inability to continue production, uncertainty in process control, and high labor intensity. Achieve the effects of low production intensity, simple and feasible equipment, and short operation time

Active Publication Date: 2018-01-19
SHANGHAI LIANGYOU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These extraction methods separate saturated fatty acids from soybean soapstock mixed fatty acids. The labor intensity is high, the yield is low, the process control has great uncertainty, continuous production is not possible, and the production process will bring environmental pollution. At the same time, the residual solvent will also have adverse effects on the human body.

Method used

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  • A method for preparing pharmaceutical grade soybean linoleic acid by thin film distillation
  • A method for preparing pharmaceutical grade soybean linoleic acid by thin film distillation
  • A method for preparing pharmaceutical grade soybean linoleic acid by thin film distillation

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The steps and conditions of a method for preparing pharmaceutical-grade soybean linoleic acid by thin film distillation are as follows:

[0043] First stage thin film evaporation:

[0044] 1kg of soybean soapstock mixed fatty acid (iodine value 119gI / 100g) melted and preheated (70°C) in the storage tank is sent to the thin film evaporator through the delivery pump at a flow rate of 2.0kg / h, and the temperature of the thin film heater is controlled 90°C, system vacuum degree ≦ 1000Pa, wiper speed 100r / min, condensation temperature at room temperature, to remove dissolved gas, moisture and volatile components. The material that has not been evaporated (heavy components) re-enters the storage tank.

[0045] Two-stage thin film distillation:

[0046] The heavy component dehydration and degassing liquid after the first-stage thin film evaporation is sent to the thin film evaporator through the delivery pump at a flow rate of 0.5kg / h, and the temperature of the thin film he...

Embodiment 2

[0050] The steps and conditions of a method for preparing pharmaceutical-grade soybean linoleic acid by thin film distillation are as follows:

[0051] First stage thin film evaporation:

[0052] 1kg of soybean soapstock mixed fatty acid (iodine value 119gI / 100g) melted and preheated (70°C) in the storage tank is sent to the thin film evaporator through the delivery pump at a flow rate of 2.0kg / h, and the temperature of the thin film heater is controlled 80°C, system vacuum degree ≦1000Pa, wiper speed 100r / min, condensation temperature at room temperature, to remove dissolved gas, moisture and volatile components. The material that has not been evaporated (heavy components) re-enters the storage tank.

[0053] Two-stage thin film distillation:

[0054] The heavy component dehydration and degassing liquid after the first-stage thin film evaporation is sent to the thin film evaporator through the delivery pump at a flow rate of 0.5kg / h, and the temperature of the thin film hea...

Embodiment 3

[0058] The steps and conditions of a method for preparing pharmaceutical-grade soybean linoleic acid by thin film distillation are as follows:

[0059] First stage thin film evaporation:

[0060] 1kg of soybean soapstock mixed fatty acid (iodine value 119gI / 100g) melted and preheated (70°C) in the storage tank is sent to the thin film evaporator through the delivery pump at a flow rate of 2.0kg / h, and the temperature of the thin film heater is controlled 70°C, system vacuum degree ≦ 1000Pa, wiper speed 100r / min, condensation temperature at room temperature, to remove dissolved gas, moisture and volatile components. The material that has not been evaporated (heavy components) re-enters the storage tank.

[0061] Two-stage thin film distillation:

[0062] The heavy component dehydration and degassing liquid after the primary thin film evaporation is sent to the thin film evaporator through the delivery pump at a flow rate of 0.5kg / h, the temperature of the thin film heater is ...

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Abstract

The invention relates to purification processes of grease fine chemicals, in particular to a method for preparation of pharmaceutical grade soybean linoleic acid by film rectification. The method for preparation of pharmaceutical grade soybean linoleic acid by film rectification includes: first grade film evaporation: sending a soybean mixed fatty acid raw material into a first grade film evaporator, conducting pressure reduced heating to remove dissolved gas, water and easily volatile impurities; second stage film evaporation: sending the unevaporated material into a second stage film evaporator to carry out rectification separation, and conducting pressure reduced heating to steam out low-boiling point saturated fatty acid; and third stage film evaporation: sending the unevaporated material into a third stage film evaporator to perform separation, carrying out pressure reduced heating to steam out unsaturated fatty acid, and collecting the evaporated substances so as to obtain the needed soybean linoleic acid. The method provided by the invention has the characteristics of reasonable process, simple and feasible equipment, convenient and stable operation, and multistage film rectification, can realize degassing, dehydration, desolventizing and refining of the target product at the same time, and also can protect the separated substances from being polluted and damaged.

Description

technical field [0001] The invention relates to a purification process of oil fine chemicals, in particular to a method for preparing pharmaceutical-grade soybean linoleic acid by thin film rectification. Background technique [0002] Fatty acid refers to a long aliphatic hydrocarbon chain with a carboxyl group at one end, which is an organic substance. The general formula of straight-chain saturated fatty acids is C(n)H(2n+1)COOH. Lower fatty acids and higher unsaturated fatty acids are colorless liquids with a pungent odor. Higher saturated fatty acids are waxy solids without A distinct smell. Fatty acids are the building blocks of many more complex lipids. Fatty acids can be oxidized and decomposed into CO in the presence of sufficient oxygen supply 2 and H 2 O, and release a lot of energy, so fatty acid is one of the main energy sources of the body, especially the essential fatty acid (linoleic acid), which is indispensable to the human body and cannot be synthesized...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C1/10C07C57/12C07C51/44
CPCC07C51/44C11C1/10C07C57/12
Inventor 王文高袁开金曹文明陈卫栋陈凤香印瑜洁朱天仪
Owner SHANGHAI LIANGYOU GRP
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