Technological process of preparing biological diesel oil with vegetable oil niger

A technology of biodiesel and vegetable oil soap, which is applied in the preparation of liquid hydrocarbon mixture, petroleum industry, biological raw materials, etc., can solve the problems of low degree of development, waste of resources, serious pollution of three wastes, etc., and achieves reduction of fatty acid content, improvement of product quality, The effect of shortening the reaction time

Inactive Publication Date: 2007-03-21
HEFEI UNIV OF TECH
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AI Technical Summary

Problems solved by technology

However, in China, the comprehensive utilization of by-products of rapeseed oil processing is low in development level, and they are mostly used in making soap, fatty acids and acidified oils. The economic benefits are poor, and it also causes waste of resources and even pollutes the environment.
[0006

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Examples:

[0029] The process method for producing biodiesel from vegetable oil soapstock includes the following steps:

[0030] 1) Acidified soap feet

[0031] Weigh 100g of rapeseed oil soapstock, add 50% water according to the mass ratio, stir well and place in a 500ml three-necked flask, preheat at 85℃, add 10ml prepared sulfuric acid solution with a concentration of 50% into the liquid separation The funnel was added dropwise to the reaction vessel for 1.5 hours. After the reaction, the reaction was completed and left to stand for stratification. The lower layer of acidified water was removed, and the upper layer was washed and dried to obtain acidified oil with an acid value of 118.64 mgkOH / g.

[0032] 2) Methyl esterification reaction

[0033] Add 100g of acidified oil to a single-necked flask, then add 200ml of methanol, 1.5% (v / w) concentrated sulfuric acid is dissolved in the methanol, put in a stir bar, connect to the reflux device, and heat to reflux in a const...

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Abstract

The present invention is technological process of preparing biological diesel oil with vegetable oil niger, and features that vegetable oil niger is prepared into biological diesel oil through acidifying with 50 % concentration sulfuric acid solution to obtain acidified oil, adding methanol to react and separating out esterified resultant, adding 20 % concentration methanol solution to obtain crude methyl fatty ester product, molecular distilling the crude methyl fatty ester product to obtain light methyl fatty ester component as the biological diesel oil product with purity up to 95 %. The present invention adopts twice esterification to convert high acid value oil into methyl fatty ester and molecular distilling to refine, and has raised reaction efficiency, short reaction time, product purity over 98 %, recovery of side product glycerin and low technological cost.

Description

technical field [0001] The invention relates to the field of biochemical technology, in particular to a process for producing biodiesel by using vegetable oil soapstock. Background technique [0002] Biodiesel refers to a clean alternative fuel produced from renewable biological resources such as animal and vegetable oils that can be used in compression ignition engines, that is, fatty acid monoesters, which are raw materials and methanol and other low-carbon alcohols in acid, alkali or enzymes It is produced by transesterification reaction under the action of catalyst. At present, with the increasing depletion of oil resources, the whole world will face a crisis of energy shortage. In order to reduce the dependence on oil and reduce the serious environmental pollution caused by oil burning, research institutes and factories in many countries around the world have begun to use biodiesel A comprehensive study of the production. [0003] At present, for various raw materials...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 姜绍通潘丽军邵平罗水忠李岩郑志
Owner HEFEI UNIV OF TECH
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