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Preparation method of environment-friendly vegetable oil low-temperature extraction solvent

A technology for extracting solvents and vegetable oils, which is applied in the production of fatty oil/fat and fat generation, and can solve the problems of not being able to catch up with the solvent level

Inactive Publication Date: 2011-09-28
彭长根 +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The new standard has made a qualitative leap in the improvement of solvent quality, but it still cannot catch up with the solvent level of developed countries in the 1990s

Method used

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Embodiment Construction

[0007] The preparation method of an environment-friendly vegetable oil low-temperature extractant of the present invention uses No. 6 solvent oil as the main raw material, high-purity hydrogen as the auxiliary raw material, methyl pentane as the main extraction component, and the distillation range is controlled at 61-65°C , wherein the preferred optimum distillation range control parameters are 61-63°C.

[0008] The beneficial effect that preparation method of the present invention obtains is:

[0009] It can control the content of n-hexane ≤ 30%, and the content of methyl pentane > 65%, and can be optimized and adjusted according to different application fields.

[0010] The benzene content is ≤10ppm, which is better than the index of ≤1000ppm in GB 16629-2008 "Vegetable Oil Extraction Solvent".

[0011] During precipitation, the 5-95% distillation temperature is only in the range of 0.5°C, and the concentrated precipitation efficiency is high.

[0012] The desolvation tem...

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Abstract

The invention relates to a preparation method of an environment-friendly vegetable oil low-temperature extraction solvent. In the preparation method, with No.6 solvent oil as a main raw material, high-purity hydrogen and the like as auxiliary raw materials and methyl pentane as a main extraction ingredient, residues are reduced to a maximum extent in the process of extracting vegetable oil and desolventizing dregs under the condition of low temperature; the protein activity in the dregs is kept; the benzene content in an extracting agent and the residual solvent content in the oil and the dregs can be reduced; and the distilling range is short, and therefore the purposes of convenient desolventizing process, easy control and low trace residues can be achieved. In the whole desolventizing process, energy saving and environment-friendliness are realized, and the pollution of normal hexane to atmosphere is greatly reduced.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a preparation method of an environment-friendly vegetable oil low-temperature extraction solvent. Background technique [0002] In the field of modern oil processing, the extraction of vegetable oil by leaching is one of the modern oil extraction methods. The leaching method of oil is based on the principle of solid-liquid extraction. Some organic solvents that can dissolve oil are selected, and the oil is sprayed and processed. Soaking is an oil extraction method to extract the oil in the oil, and it is also a method with the highest oil extraction rate. [0003] In recent decades, research on extraction solvents used in the field of edible oil processing in various countries in the world has mainly focused on two aspects, one is the safety of edible oils; the other is the functional issues of oil extraction. The former requires food safety, and at the same tim...

Claims

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Application Information

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IPC IPC(8): C11B1/10
Inventor 彭长根李自力杨钦
Owner 彭长根
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