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Device and method for synthesizing fatty acid methyl ester by utilizing bio-enzyme catalysis continuous esterification

A technology of fatty acid methyl esters and biological enzymes, which is applied in biochemical cleaning devices, biochemical equipment and methods, enzymology/microbiology devices, etc., can solve the hidden dangers of kitchen waste oils and fats, which are not suitable for large-scale production and Application, waste residue, waste gas generation and other issues, to achieve the effect of being suitable for large-scale production and application, avoiding high cost and high investment, and complete reaction

Pending Publication Date: 2020-06-23
HEBEI JINGU RECYCLING RESOURCES DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Kitchen waste oils generally refer to all kinds of low-quality oils that exist in daily life, such as recycled cooking oil, repeatedly used frying oil, etc. The appearance of kitchen waste oils will not only pollute the environment on the one hand, but also There may be serious dietary safety hazards caused by kitchen waste oil returning to the dining table. In order to eliminate the above-mentioned safety and environmental protection hazards caused by kitchen waste oil, people are trying to convert kitchen waste oil into safer and more useful products.
[0003] At present, in the prior art, there are many methods for synthesizing fatty acid methyl esters using kitchen waste oils and fats as raw materials, but these methods have many defects. , seriously pollute the environment. In the existing open technology, methanol is also used to synthesize fatty acid methyl esters, but it has strict requirements on the water content in methanol. Generally, the water content in methanol is required to be less than or equal to 0.5%, and the synthesis process requires a large amount of methanol. The cost and investment of distillation and recovery are high, and the reaction temperature in the esterification stage usually needs to be 100-280 ° C, which consumes a lot of energy and costs high. The synthesis process needs to be esterified first, and then transesterified. The process is complicated and not suitable for large-scale chemical production and application

Method used

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  • Device and method for synthesizing fatty acid methyl ester by utilizing bio-enzyme catalysis continuous esterification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Utilize the method for the synthesis of fatty acid methyl ester of biological enzyme catalyzed continuous esterification, comprise the following steps:

[0062] (1) The kitchen waste oil and fat raw material enters the static mixer 513, and sodium hydroxide solution is continuously added to the kitchen waste oil and fat raw material through the static mixer 513, and the pH value is adjusted to 5.0. The temperature of the kitchen waste oil and fat raw material is 38°C. The acid value is more than 65 mg / g, the water content is 1%, and the mass percentage of sodium hydroxide in the sodium hydroxide solution is 10%;

[0063] (2) The material after step (1) adjusting the pH value is completed enters the static mixer 614, and the biological enzyme is continuously added to the material after the step (1) is adjusted through the static mixer 614. The addition amount of the biological enzyme is 1‰ of the quality of kitchen waste oil and fat raw materials;

[0064] (3) The mater...

Embodiment 2

[0069] Utilize the method for the synthesis of fatty acid methyl ester of biological enzyme catalyzed continuous esterification, comprise the following steps:

[0070] (1) The kitchen waste oil and fat raw material enters the static mixer 513, and sodium hydroxide solution is continuously added to the kitchen waste oil and fat raw material through the static mixer 513, and the pH value is adjusted to 5.2, and the temperature of the kitchen waste oil and fat raw material is 40°C. The acid value is 70mg / g, the water content is 2%, and the mass percent of sodium hydroxide in the sodium hydroxide solution is 15%;

[0071] (2) Step (1) The material after adjusting the pH value enters the static mixer 614, and the biological enzyme is continuously added to the material after the pH adjustment is completed through the static mixer 614. 2‰ of quality;

[0072] (3) The material after the addition of biological enzymes in step (2) enters the first-level enzyme reaction kettle 1, and me...

Embodiment 3

[0077] Utilize the method for the synthesis of fatty acid methyl ester of biological enzyme catalyzed continuous esterification, comprise the following steps:

[0078] (1) Kitchen waste oil and fat raw materials enter static mixer 513, sodium hydroxide solution is continuously added to kitchen waste oil and fat raw materials through static mixer 513, and the pH value is adjusted to 5.5. The temperature of kitchen waste oil and fat raw materials is 42°C. The acid value is 75mg / g, the water content is 3%, and the mass percent of sodium hydroxide in the sodium hydroxide solution is 20%;

[0079] (2) Step (1) The material after adjusting the pH value enters the static mixer 614, and the biological enzyme is continuously added to the material after the pH adjustment is completed through the static mixer 614. 3‰ of quality;

[0080] (3) The material after the addition of biological enzymes in step (2) enters the first-level enzyme reaction kettle 1, and methanol is added through th...

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Abstract

The present invention discloses a device for synthesizing fatty acid methyl ester by utilizing bio-enzyme catalysis continuous esterification. The device comprises N-stage enzyme reaction kettles, N-stage enzyme reaction pump and N+2 static mixers; the N-stage enzyme reaction kettles are connected in sequence through pipelines; a material feeding inlet is formed in a side wall of a lower part of the 1st-stage enzyme reaction kettle, and the (N+1)th static mixer is sequentially connected with the (N+2)th static mixer and the material feeding inlet of the 1st-stage enzyme reaction kettle throughpipelines; an upper side wall of the nth stage enzyme reaction kettle is provided with a circulating liquid inlet n, a lower side wall of the nth stage enzyme reaction kettle is provided with a circulating liquid outlet n, and the circulating liquid outlet n is sequentially connected with the static mixer n, the nth stage enzyme reaction pump and the circulating liquid inlet n through pipelines;and N and n are positive integers, wherein the n is more than or equal to 1 and less than or equal to the N. The device for synthesizing the fatty acid methyl ester by utilizing the bio-enzyme catalysis continuous esterification has low energy consumption, the obtained fatty acid methyl ester product has high quality, and a bio-enzyme is used as a catalyst, so that the device is energy-saving, environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of bioenergy, and more specifically relates to a device and a method for synthesizing fatty acid methyl esters by using biological enzymes to catalyze continuous esterification. Background technique [0002] Kitchen waste oils generally refer to all kinds of low-quality oils that exist in daily life, such as recycled cooking oil, repeatedly used frying oil, etc. The appearance of kitchen waste oils will not only pollute the environment on the one hand, but also There may be serious dietary safety hazards caused by kitchen waste oil returning to the dining table. In order to eliminate the safety and environmental protection hazards caused by the above kitchen waste oil, people are trying to convert kitchen waste oil into safer and more useful products. [0003] At present, in the prior art, there are many methods for synthesizing fatty acid methyl esters using kitchen waste oils and fats as raw materials, but...

Claims

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Application Information

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IPC IPC(8): C12M1/40C12M1/00C12M1/36C12P7/64
CPCC12M21/18C12M23/58C12M41/26C12P7/6436Y02P20/10
Inventor 赵敏仲王子腾
Owner HEBEI JINGU RECYCLING RESOURCES DEV