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Refining method for tung oil

A tung oil and vacuum technology, which is applied in the field of tung oil refining, can solve the problems of limited use, unguaranteed quality of tung oil, and restrictions on the development of tung oil production enterprises, and achieve the effects of perfect processing chain, quality optimization, and light color

Inactive Publication Date: 2007-08-15
郧县富源油脂有限责任公司
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  • Application Information

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Problems solved by technology

Due to the limitations of conventional methods, the quality of tung oil has not been guaranteed, and its application has also been limited, restricting the development of many domestic tung oil production enterprises

Method used

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Embodiment Construction

[0010] Below, the present invention will be further described by specific embodiment:

[0011] A kind of refining method of tung oil, its concrete steps are described as follows:

[0012] a. Heat the tung oil obtained by pressing and filtering to 78-82°C; the heating method is: use double rows of pipelines, one row of pipelines for tung oil, one row of pipelines for water vapor, and heat the tung oil by heat exchange;

[0013] B, the tung oil after heating is transported in the vacuum extracting device and carries out vacuum pumping, extracting impurity; Described vacuum extracting device is a tank that is connected with vacuum pump;

[0014] c, then, the tung oil is transported to the high-rise sedimentation tower for further precipitation, and the precipitation time is 20 days to obtain the refined tung oil.

[0015] Among them, the temperature of the tung oil entering the precipitation tower is preferably 50-60°C, which can reduce the viscosity of the tung oil and facilita...

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Abstract

The tung oil refining process includes the following steps: heating tung oil obtained through squeezing and filtering to 70-90 deg.c; vacuum extracting water and impurity inside a vacuum extractor; and deposition for at least 15 days inside one depositing tower to obtain refined tung oil. The said tung oil refining process has highest temperature of 90 deg c and can ensure light color of tung oil, high quality, impurity content less than 0.15 %, and water content less than 0.1 %.

Description

technical field [0001] The invention relates to a processing method of tung oil, especially a refining method of tung oil. Background technique [0002] As an important forestry product, tung oil is an important industrial raw material, widely used in paint making, printing, electronics, national defense machinery and other industries. The existing method for obtaining tung oil from tung seeds is basically to follow the extraction method of edible vegetable oil, that is: shelling tung seeds, pulverizing, steaming and frying, pressing to obtain tung oil, and then filtering to obtain the product. In this conventional processing method, the obtained tung oil has low quality, dark color, and the content of impurities in the tung oil is about 1.5-2.5%, and the water content is about 1-2%. This tung oil is far from the national tung oil GB8277-87 standard. Due to the limitations of conventional methods, the quality of tung oil has not been guaranteed, and its application has als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/00
Inventor 杨伍科绳士兴张根生周建国
Owner 郧县富源油脂有限责任公司
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