Method for producing diesel oil by esterification deacidification of rice bran oil

A technology for esterification deacidification and rice bran oil, which is used in fatty acid esterification, petroleum industry, and fat production, etc., can solve the problems of environmental pollution, low refining rate and high price, and can eliminate pollution, improve refining yield, reduce The effect of additional loss

Inactive Publication Date: 2012-05-16
姚昂
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional deacidification and refining methods, chemical refining and physical refining, are not suitable for the refining of rice bran oil with high acid value, and the refining rate is low. Alkali refining and deacidification will also produce a large amount of organic waste water, polluting the environment...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0010] A method for producing diesel oil through esterification and deacidification of rice bran oil, which is characterized in that: the method utilizes high-acid value rice bran crude oil, uses zinc oxide as a catalyst, deacidifies it into biodiesel raw material through esterification and deacidification, and specifically includes Follow the steps below:

[0011] (1) Under the condition of vacuum degree of 0.09MPa, put the degummed and decolorized rice bran oil in a container, carry out dehydration and oxygen removal for 30min, and heat to 150°C;

[0012] (2) On the basis of step (1), add 0.2-0.4% glycerin and 0.2-0.3% catalyst zinc oxide to carry out esterification and deacidification reaction, the reaction temperature is 160-220°C, and the reaction time is 2-6h;

[0013] (3) The reaction of step (2) is finished, and the acid value of rice bran oil is measured, and the acid value of rice bran oil can be reduced from 38.14mg / g to 5.17mg / g.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a rice bran oil, specifically to a method for producing diesel oil by esterification deacidification of the rice bran oil, and belongs to the technical field of chemical industry. By the adoption of zinc oxide as a catalyst, the rice bran crude oil with high acid value undergoes esterification deacidification and is deacidified into a biodiesel material. The acid value of the rice bran oil can be decreased from 38.14mg/g to 5.17mg/g. Free fatty acid in the rice bran oil can react with glycerin at high temperature under vacuum in the presence of a catalyst to generate triacylglycerol, diacylglyeerol and monoglyceride. According to the chemical principle to design a chemical catalysis method, a lot of free fatty acid in the rice bran crude oil undergoes resterification to generate neutral oil. And simultaneously, the purpose of deacidification is achieved and the pollution of soap stock to the environment is eliminated. Additional loss is greatly reduced. And in the meanwhile, inevitable loss caused by free fatty acid which must be removed during the above chemical alkali refining and physical deacidification refining processes is changed into neutral rice bran grease, so as to raise the refining yield of the grease.

Description

technical field [0001] The invention relates to rice bran oil, in particular to a method for producing diesel oil through esterification and deacidification of rice bran oil, which belongs to the technical field of chemical industry. Background technique [0002] Rice bran oil is a kind of oil produced by processing rice bran, a by-product of rice processing. It is a large and wide renewable resource. However, for a long time, most areas have used rice bran as feed for livestock and poultry. It has nutritional value and resource The benefits have not been brought into full play, and less than 15% are used for rice bran oil processing, resulting in a great waste of this superior resource of rice bran. On the other hand, because a large number of small-scale oil and fat production enterprises have not carried out esterase passivation treatment on rice bran, the raw material for rice bran oil production, and the storage time of rice bran is too long or the storage temperature i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C11C3/06C11B3/00C11B3/02C10L1/02
Inventor 姚昂
Owner 姚昂
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap