Method for preparing linseed oil fatty acid with light color

A technology for linseed oil fatty acid and linseed oil, which is applied in the directions of fatty acid preparation/refining, fatty acid production, etc., can solve the problems of excessively dark product color, consumption, and inability to produce light-colored products, and achieves the effect of environmental protection in the process.

Inactive Publication Date: 2012-07-18
安徽省瑞芬得油脂深加工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the old process has the following problems: first, it consumes a large amount of acid and alkali, and the production cost is high; second, the inorganic impurity ions in the product, such as sulfate and sodium ions, cannot be completely removed, which affects the quality of subsequent products; The third is that the color of the product is too dark to meet the demand for light-colored products; the fourth is that the production of sewage will cause great harm to the environment

Method used

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  • Method for preparing linseed oil fatty acid with light color
  • Method for preparing linseed oil fatty acid with light color

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Put 7 tons of linseed oil and 3.5 tons of water into the hydrolysis kettle, then add 7kg of zinc oxide and 3.5kg of calcium oxide, adjust the pressure in the kettle to 1.3-1.5Mpa, stir and hydrolyze for 5 hours, let stand for half an hour to exhaust the sweet water and Soap (recycled separately). Add 3-4 tons of clear water again, heat to keep the pressure at 1.3-1.5Mpa, measure the acid value of the product every hour, when the acid value is higher than 190mgKOH / g, stop the hydrolysis, let go of the lower layer of glycerin water (for initial hydrolysis Feeding), the obtained crude fatty acid is put into the transition tank.

[0020] The crude fatty acid is naturally sucked into the dehydration kettle through vacuum, and the vacuum dehydration and degassing are carried out while it is hot. The temperature of the material is controlled at 100-120°C (the temperature is low, the temperature must be raised), and the vacuum degree is controlled at -0.098~-0.099MPa.

[0021]...

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Abstract

The invention relates to a method for preparing linseed oil fatty acid with a light color, which adopts a production process of low-medium pressure catalytic hydrolysis and linseed oil fatty acid flash evaporation decoloration to produce the linseed oil fatty acid with the light color. The fatty acid prepared by the method has a light color and high iodine value; and the method is low in process cost, free from pollutant discharge and adopts an environmentally-friendly process.

Description

technical field [0001] The invention relates to the preparation technology of fatty acid, in particular to a preparation method of light-colored linseed oil fatty acid. Background technique [0002] With the development of paint and ink industry, the output of light-colored quick-drying alkyd paint and light-colored gravure printing ink is increasing, and the market demand for light-colored linseed oil fatty acid is increasing day by day. Due to the high iodine value of linseed oil (higher than 175gI / 100g, up to 220), the content of linolenic acid in its fatty acids is relatively high, and thermal polymerization is prone to occur when the temperature is high. The iodine value drops and even cements. Therefore, the production of light-colored linseed oil fatty acid has always been a technical problem for various fatty acid manufacturers. [0003] The old process adopts the saponification-acidification method to produce linseed oil fatty acid, the production temperature is l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C1/00C11C1/06C11C1/10
Inventor 王军
Owner 安徽省瑞芬得油脂深加工有限公司
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