Method for preparing biological diesel oil by esterifying, ester interchanging greases in high acid number

A high acid value oil and biodiesel technology, applied in the preparation of biological raw materials, biofuels, liquid hydrocarbon mixtures, etc., can solve the problems of high equipment requirements and difficult industrialization, shorten the reaction time, reduce the reaction steps, and weaken the impact. Effect

Inactive Publication Date: 2006-04-19
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
View PDF1 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the supercritical methanol phase reaction is carried out under high temperature...

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 1

[0018] (1), take 150 milliliters of rice bran oil and add it to the autoclave, the free fatty acid content of rice bran oil is 26.3wt%, add 5 grams of lead acetate catalyst, control the reaction temperature at 210 ° C, inject methanol through a high-pressure plunger pump until the system pressure is 2 MPa, at this time 100 ml of methanol was added, and the reaction time was 15 minutes;

[0019] (2) After the reaction, the product obtained in (1) is distilled to remove methanol, centrifuged or filtered to separate part of the catalyst, washed with water to remove residual glycerin and catalyst, and refined to obtain biodiesel.

Embodiment 2

[0021] (1) Take 100 milliliters of swill oil and add it to the autoclave. The free fatty acid content of the swill oil is 42.5WT%, add 3 grams of zinc stearate catalyst, control the reaction temperature at 220 ° C, and inject methanol through a high-pressure plunger pump until the system pressure is 4 MPa 150 milliliters of methanol was added at this time, and the reaction time was 10 minutes;

[0022] (2) After the reaction, the product obtained in (1) is distilled to remove methanol, centrifuged or filtered to separate part of the catalyst, washed with water to remove residual glycerin and catalyst, and refined to obtain biodiesel.

Embodiment 3

[0024] (1) Take 120 milliliters of high acid value soapstock from the oil factory and add it to the autoclave. The free fatty acid content of the soapstock is 75.2wt%, add 2 grams of cadmium acetate catalyst, control the reaction temperature at 160 ° C, and inject methanol into the system through a high-pressure plunger pump The pressure is 7MPa, now add 130 milliliters of methanol, and the reaction time is 50 minutes;

[0025] (2), with embodiment 1.

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

A process for preparing biologic diesel oil from the fat with high acid number by esterifying and ester exchange includes such steps as proportionally loading said fat and methanol into high-pressure reactor, proportionally adding Lewis acid as catalyst, reation, distilling the resultant to separate methanol, centrifugal separation or filter to remove part of catalyst, water washing to remove residual glycerin and catalyst, and refining.

Description

technical field [0001] The invention belongs to a preparation method of biodiesel, in particular to a method for producing biodiesel through simultaneous esterification and transesterification of high-acid value grease and methanol by a subcritical methanol phase Lewis acid. Background technique [0002] Biodiesel refers to substances derived from biological products that can be used as fuel for diesel engines, including cracking products of animal and vegetable oils or fatty acid esters obtained by transesterification of animal and vegetable oils with short-chain alcohols. Biodiesel has the characteristics of renewable, complete combustion, low exhaust pollution, easy biodegradation, and harmless to human body. The research and application of biodiesel is of great significance for coping with the oil crisis, improving fuel safety, and transitioning fuel varieties after oil resources are exhausted. At present, the application of biodiesel is mainly based on fatty acid methy...

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): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 侯相林齐永琴乔欣刚
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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