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Method for mixing alcohol and oil in biodiesel esterification and transesterification reactions

A technology of biodiesel and transesterification, which is applied to the mixing of alcohol and oil in the process of transesterification. In the field of esterification, biodiesel can solve the problems of speeding up the reaction speed, long cycle and long time of biodiesel, so as to achieve the speed of reaction, The effect of shortening the production cycle

Inactive Publication Date: 2017-03-08
SICHUAN LANBANG NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The process of esterification reaction and transesterification reaction is accompanied by stirring to ensure sufficient contact between methanol and oil, speed up the reaction speed, and ensure complete reaction. However, both esterification reaction and transesterification reaction under conventional stirring take a long time, resulting in the use of The chemical method takes a long time to prepare biodiesel. The esterification reaction time is about 12 hours under conventional stirring, and the transesterification reaction time is about 2 hours.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of mixing method of biodiesel esterification, transesterification comprises the following steps:

[0020] aHydraulic cavitation: Use a pump with a head of 45m to extract the reaction mixture in the esterification reactor, and enter the vacuum environment with a vacuum degree of -0.09~-0.092MPa;

[0021] b Venturi reaction: pass the reaction mixture passing through the vacuum environment through a pipe that first shrinks and then gradually expands;

[0022] c. Oil injection: the reaction mixture passed through step b is injected onto the conical solid target fixed above the liquid level in the esterification reactor and located at the center of the esterification reactor, and the shooting center of the reaction mixture is located at the top of the cone.

[0023] The vacuum environment and the pipeline that shrinks first and then expands gradually are located directly above the solid target.

[0024] After 3.3h, the esterification reaction fully reac...

Embodiment 2

[0025] Embodiment 2: a kind of mixing method of biodiesel esterification, transesterification comprises the following steps:

[0026] aHydraulic cavitation: Use a pump with a head of 45m to extract the reaction mixture in the transesterification reactor and enter it into a vacuum environment with a vacuum degree of -0.09~-0.092MPa;

[0027] b Venturi reaction: pass the reaction mixture passing through the vacuum environment through a pipe that first shrinks and then gradually expands;

[0028] c. Oil injection: the reaction mixture passed through step b is injected onto the conical solid target fixed above the liquid level in the transesterification reactor and located at the center of the transesterification reactor, and the shooting center of the reaction mixture is located at the top of the cone.

[0029] The vacuum environment and the pipeline that shrinks first and then expands gradually are located directly above the solid target.

[0030] After 35 minutes, the transest...

Embodiment 3

[0031] Embodiment 3: a kind of mixing method of biodiesel esterification, transesterification comprises the following steps:

[0032] aHydraulic cavitation: Use a pump with a lift of 50m to extract the reaction mixture in the esterification reactor and enter it into a vacuum environment with a vacuum degree of -0.085~-0.09MPa;

[0033] b Venturi reaction: pass the reaction mixture passing through the vacuum environment through a pipe that first shrinks and then gradually expands;

[0034] c Injection: the reaction mixture passed through step b is injected onto the solid target located in the esterification reactor.

[0035] In the step c, the solid target is conical, and the shooting center of the reaction mixture is located at the top of the cone. The vacuum environment and the pipeline that shrinks first and then gradually expands are all located directly above the esterification reactor, and the solid target is fixed on the reactor. Above the inner liquid level, it is loca...

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PUM

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Abstract

The invention relates to the field of biodiesel and especially relates to a method for mixing alcohol and oil in biodiesel esterification and transesterification reactions. The method comprises a hydraulic cavitation process, a venturi reaction process and an oil ejection process. Through combination of the hydraulic cavitation, venturi reaction, loop circular reaction and impact action, the mixing and contact of the reactants are effectively accelerated, and the mixing efficiency is much higher than the stirring effect so that reaction rates of the esterification reaction and the transesterification reaction are effectively accelerated, and thus the production cycle of biodiesel is effectively shortened.

Description

technical field [0001] The invention relates to the field of biodiesel, in particular to a method for mixing biodiesel with alcohol and oil during esterification and transesterification. Background technique [0002] Biodiesel is a clean and renewable energy source. It is a kind of diesel (liquid fuel) processed from biomass resources as the raw material. The main chemical component is fatty acid methyl ester. Specifically, animal and vegetable oils, such as rapeseed oil, soybean oil, peanut oil, corn oil, rice bran oil, cottonseed oil; and acidified oils and fatty acids from animal and vegetable oil leftovers; animal oils: lard oil, chicken oil, duck oil, animal bone oil After a series of chemical transformations, the refined liquid fuel is a high-quality substitute for petroleum diesel. Biodiesel is a typical "green energy". Vigorously developing biodiesel is of great strategic significance to sustainable economic development, promotion of energy substitution, reduction o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/04C10L1/02B01F13/06B01F5/04
CPCC10L1/02C11C3/04C10L2200/0476B01F25/30B01F33/70Y02E50/10
Inventor 陈波
Owner SICHUAN LANBANG NEW ENERGY TECH CO LTD
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