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Method for continuously producing biodiesel without catalysts

A biodiesel and catalyst technology, applied in biofuel, fat production, petroleum industry, etc., can solve the problems of unstable process and high production cost, and achieve the effects of no process waste water, fast reaction speed and low production cost

Inactive Publication Date: 2013-07-24
GUANGDONG MAOSHENG ENERGY INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for continuous production of biodiesel without a catalyst, to solve the problems that the existing production method is easy to generate a large amount of waste water, the production cost is high and the process is unstable

Method used

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Experimental program
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Effect test

Embodiment Construction

[0018] The raw material oil (waste animal and vegetable oil, microbial oil, etc.) is de-impured, vacuum flash dehydrated, and the moisture content is required to be within 0.1%. The preheater is heated to 180°C ~ 220°C, and continuously enters from the upper part of the biodiesel reaction tower; the auxiliary material methanol with a purity > 98% is pumped to 1.3MPa ~ 4.0MPa to transport, and heated to 180°C ~ 220°C by the preheater ℃, continuously enters from the bottom of the biodiesel reaction tower; in the biodiesel reaction tower, the raw material oil is from top to bottom, and the methanol gas is in retrograde contact from bottom to top, and oil hydrolysis, fatty acid esterification and glyceride transesterification reactions occur to generate fatty acids Methyl ester and glycerol, the reaction is carried out at 1.3MPa ~ 4.0MPa, 180°C ~ 220°C; excess methanol gas entrains the water generated by the reaction and is discharged from the top of the biodiesel reaction tower, a...

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Abstract

The invention discloses a method for continuously producing biodiesel without catalysts. The method comprises the following steps of: heating and pressurizing waste animal and plant grease, microbial grease and the like; performing lipid hydrolysis with methanol, fatty acid esterification and ester exchange reaction with glyceride in a biodiesel reaction tower; and pumping the reaction products to a glycerol distillation tower, a methyl ester deodorization tower and a methyl distillation tower continuously to obtain the biodiesel. The method is continuous, quick in reaction speed, low in production cost, simple to operate, free from process wastewater, stable and reliable in quality and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of biodiesel production, in particular to a method for continuously producing biodiesel without a catalyst. Background technique [0002] Biodiesel, also known as fatty acid methyl ester, is obtained by esterification and transesterification of waste animal and vegetable oils and microbial oils with low-carbon alcohols such as methanol (or ethanol) as raw materials. Biodiesel has become a high-quality substitute for petroleum diesel because of its unique renewability and environmental protection. It is considered to be one of the most ideal ways to solve the global energy crisis, relieve environmental pressure, and control air pollution. [0003] At present, there are two main methods for the industrial production of biodiesel in my country. (1) Chemical method: the production of biodiesel by this method is relatively mature, and it is easy to generate a large amount of waste water due to the use of acid and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C11C3/10C11B3/12C10L1/02
CPCY02E50/13Y02E50/10
Inventor 徐斌
Owner GUANGDONG MAOSHENG ENERGY INVESTMENT