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Biodiesel preparation device and method for preparing biodiesel using same

A technology of biodiesel and preparation equipment, which is applied in the field of oleochemical industry, can solve the problems of low conversion rate of the preparation process, and achieve the effects of high purity, excellent method and high yield

Active Publication Date: 2018-07-06
CHANGLING PETRO CHEM ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Based on this, it is necessary to provide an excellent, continuous, high conversion and high yield biodiesel preparation device for the problems of low conversion rate and low yield in the traditional biodiesel preparation process

Method used

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  • Biodiesel preparation device and method for preparing biodiesel using same
  • Biodiesel preparation device and method for preparing biodiesel using same
  • Biodiesel preparation device and method for preparing biodiesel using same

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preparation example Construction

[0064] The above-mentioned biodiesel preparation device is excellent, and the waste oil or acidified oil is mixed with glycerin after being pretreated by the preprocessor 10, so as to avoid the impact of impurities on the catalyst activity of the subsequent esterification reaction and transesterification reaction. The esterification reaction tower 30 is used, The impurity-removing raw materials and glycerin have a long enough residence time in the catalytic reaction section, water and esterification products are removed quickly, the conversion rate is improved, and the purity of the esterification products is high, so that the subsequent transesterification reaction uses less catalyst. The reaction can be carried out, and the yield of biodiesel is relatively high. Glycerol and methanol are recycled so that the reaction can be carried out continuously.

[0065] A kind of method utilizing above-mentioned device to prepare biodiesel, comprises the following steps:

[0066] S110....

Embodiment 1

[0092] After the waste oil enters the preprocessor to remove impurities, the impurity-removing raw material is obtained (the impurity-removing raw material contains 39.2wt% fatty acid glyceride, 2.4wt% water and 58.4wt% fatty acid).

[0093] 2685kg / h of the impurity-removing raw material, 195kg / h of glycerin and 320kg / h of circulating glycerin (containing 0.9wt% fatty acid glycerides and 99.1wt% of glycerin in the circulating glycerin) are mixed and then preheated into the preheater to After 190°C, it enters the esterification reaction tower for reaction. Due to rectification, the light components containing water and glycerin rise, and the heavy components containing fatty acid glycerides decrease.

[0094] After the light component containing water and glycerin rises into the rectification section, due to rectification, water is extracted from the top of the esterification reaction tower, and glycerin is extracted by the extractor to obtain circulating glycerin through a circul...

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Abstract

The invention provides a preparation device for biodiesel. The preparation device comprises a preprocessor, a preheater, an esterification reaction tower, an esterification grease pump, an ester exchange reactor, a methanol recovery device and a product liquid separation tank which are connected in order. The esterification reaction tower comprises a tower body, an esterification reboiler and a circulation glycerin pump and the esterification reboiler and the circulation glycerin pump are arranged outside the tower body. A condensation backflow section, a rectifying section, a catalytic reaction section, a stripping section and a reboiler heating section are arranged in the tower body in order from top to bottom. An extractor is arranged in the rectifying section. One end of the circulation glycerin pump is connected with the extractor, and the other end of the circulation glycerin pump is connected with the preheater. The catalytic reaction section comprises a distributor, a first catalytic reaction section and a second catalytic reaction section, and the first catalytic reaction section and the second catalytic reaction section are arranged at the upper side and the lower side of the distributor. The invention also provides a method for preparing biodiesel by utilization of the above device. The device and the method are excellent and continuous, and the conversion rate and the yield are both high.

Description

technical field [0001] The invention relates to the technical field of oleochemicals, in particular to a biodiesel preparation device and a method for preparing biodiesel using the same. Background technique [0002] With the continuous depletion of the world's oil resources and the increasingly severe environmental problems, biodiesel, as a renewable, green, abundant source and alternative to fossil fuels, has received more and more attention. Biodiesel is a monoalkyl ester of a long-chain fatty acid, mainly referring to fatty acid methyl ester in industrial applications. [0003] The main domestic biodiesel preparation processes are biological enzyme method, acid / base catalysis method, supercritical method and two-step acid-base catalysis method, etc. Due to the disadvantages of low conversion rate and high cost of the first few methods, most biodiesel currently The production process is a two-step acid-base catalysis method. [0004] The two-step acid-base catalysis met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11C3/06C11C3/10C10L1/02
CPCC10L1/02C11C3/06C11C3/10Y02E50/10
Inventor 杨劲匡晓辉李根忠
Owner CHANGLING PETRO CHEM ENG DESIGN
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