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Method for preparing biological diesel oil from low acid value rice bran oil under supercritical methanol condition

A technology of supercritical methanol and biodiesel, which is applied in the fields of biofuel, fat oil/fat production, fat oil/fat refining, etc. It can solve the problems of cumbersome refining process, high oil yield, and potential safety hazards of organic solvents, and improve the refining rate , Grease damage is small, no solvent residue effect

Inactive Publication Date: 2017-03-22
ANHUI PROVINCE YINGSHANG COUNTY SANJIN GRAINS ANDOILS CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solvent leaching method has a high oil yield, but the use of organic solvents has potential safety hazards, and the refining process is too cumbersome

Method used

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Embodiment

[0022] A method for preparing biodiesel from rice bran oil with low acid value under supercritical methanol conditions, prepared from the following parts by weight (g) of raw materials:

[0023] Rice bran 55, alkaline protease 12, activated clay 6, activated carbon 9, sodium nitrite 4, potassium nitrate 3, distilled water, and methanol.

[0024] A method for preparing biodiesel from rice bran oil with low acid value under supercritical methanol conditions is characterized in that it is carried out according to the following steps:

[0025] a. Pass the rice bran through a 50-mesh sieve, add water to adjust the moisture content to 20%, put it into a heat-resistant plate, spread it to a thickness of 5cm and spread it evenly, place it in a microwave oven, heat it at 800-900W for 180s, take it out, and cool to room temperature ,spare;

[0026] b. Put the material obtained in a in supercritical CO 2 In the extraction device, at 50-60℃, CO 2 2h extraction at flow rate 50-60kg / h and pressure ...

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Abstract

The invention discloses a method for preparing biological diesel oil through low acid value rice bran oil under a supercritical methanol condition. The method is characterized by using rice bran, alkaline protease, activated clay, activated carbon, sodium nitrite and potassium nitrate as raw materials. Oils and fats in the rice bran are extracted through an aqueous enzymatic method, an aqueous enzymatic oil extraction technology is safe, environmentally friendly and green, and the obtained vegetable oil is free of pollution; the activated clay and the activated carbon are added for the decoloring treatment of the rice bran oil; a supercritical CO2 extraction technology has the advantages of being high in extraction rate, good in selectivity, simple in process, free of residual solvents and the like, the rice bran oil refining process can be simplified, and the refining rate of the rice bran oil is improved; a molecular distillation technology is used for the deacidification of the rice bran oil, is a deacidification technology of the oils and the fats, and has the advantages of being low in energy consumption, little in damage to the oils and the fats, clean and the like.

Description

[0001] The invention relates to the application field of rice bran oil, in particular to a method for preparing biodiesel under the condition of supercritical methanol with low acid value rice bran oil. Background technique [0002] my country is the world's largest rice producer. Rice bran is an important by-product in the process of rice processing. Rice bran has a high oil content and is an important oil source. As a new type of natural vegetable oil, rice bran oil contains a variety of special active ingredients that are beneficial to health. Rice bran oil has the functions of improving immunity, lowering cholesterol, regulating blood fat, preventing arteriosclerosis, etc., and has high nutritional value. Due to its rich nutritional value and health functions, rice bran oil is increasingly valued and favored by consumers. [0003] In her master's degree thesis "Research on the Preparation and Refining Process of Rice Bran Oil", Xie Ying used fresh rice bran as the raw material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/02C11B1/04C11B1/10C11B3/00C11B3/12
CPCC11B1/025C11B1/04C11B1/104C11B3/001C11B3/12Y02E50/10
Inventor 金荣珍金永王方甫
Owner ANHUI PROVINCE YINGSHANG COUNTY SANJIN GRAINS ANDOILS CO LTD
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