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Method for synthesizing and separating biodiesel through catalyst-wall-loaded micro-reactor and micro-separator with interfacial property difference

A micro-separator, biodiesel technology, applied in chemical instruments and methods, chemical/physical/physical-chemical reactors, biofuels, etc., can solve the problems of catalyst environmental pollution, difficult post-processing, low conversion rate, etc., and achieve streamlined Production process, easy direct separation, high conversion effect

Active Publication Date: 2019-04-16
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the current biodiesel preparation technology, such as serious environmental pollution of catalysts, difficult post-processing, severe corrosion of equipment, long reaction time, low conversion rate, and large reaction energy consumption, etc. A loaded acidic ionic liquid microchannel reactor for the preparation of biodiesel and a T-shaped microchannel separator for real-time separation of biodiesel products

Method used

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  • Method for synthesizing and separating biodiesel through catalyst-wall-loaded micro-reactor and micro-separator with interfacial property difference

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The plunger pump injected soybean oil and methanol into a micro-mixer with an inner diameter of 1 mm at 876 μl / min and 534 μl / min respectively, and then flowed to a wall-loaded [HSO 3 -pmim]HSO 4 The catalyst is in a microchannel reactor made of stainless steel, and the reaction time is 5 minutes. The reacted product will flow to the T-type micro-separator. The T-type micro-separator is composed of a liquid outlet pipe, an oil outlet pipe and an alcohol outlet pipe. The outlet ends of the liquid outlet pipe are respectively connected with an oil outlet pipe and an alcohol outlet pipe, and the reacted product flows into the outlet of the T-type micro-separator. The pipes flow out through the oil outlet pipe and the alcohol outlet pipe respectively to realize the separation of the product. The inner diameter of the T-type micro-separator is 3mm, the inner wall surface material of the alcohol outlet pipe in the T-type micro-separator is stainless steel, and the inner wal...

Embodiment 2

[0022]The plunger pump injects soybean oil and methanol into the micro-mixer with an inner diameter of 1 mm at 735 μl / min and 675 μl / min respectively, and then flows to the wall-loaded [HSO 3 -pmim]HSO 4 Catalyst In the microchannel reactor made of perfluoroethylene propylene, the reaction temperature is 90°C, the pressure is 0.6MPa, and the reaction time is 8min. The reacted product will flow to the T-type micro-separator. The catalyst wall-loading method and the T-type micro-separator are the same as in Example 1, and the following Examples 3-7 are also applicable. The final chromatographic analysis yield of biodiesel was 95.6%.

Embodiment 3

[0024] The plunger pump injects palm oil and methanol into the micro-mixer with an inner diameter of 1 mm at 876 μl / min and 534 μl / min respectively, and then flows to the wall-loaded [HSO 3 -bmim]HSO 4 In the microchannel reactor made of polyperfluoroethylene propylene, the reaction temperature is controlled at 120°C, the pressure is 0.8MPa, and the reaction time is 5min. The reacted product will flow to the T-shaped micro-separator. The final chromatographic analysis yield of biodiesel was 81.1%.

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Abstract

The invention discloses a method for synthesizing and separating biodiesel through a catalyst-wall-loaded micro-reactor and a micro-separator with the interfacial property difference. The method includes the following operating steps that oil and alcohol with different flow speeds are injected into the micro-channel reactor with the wall face loaded with acidic ionic liquid through a plunger pump,the whole reaction is carried out at 0.3 MPa to 1.0 MPa and the temperature of 80 DEG C to 150 DEG C, the high conversion rate of raw oil can be achieved in a short time, then a reaction product is sent to the T-shaped micro-separator, and a product can be separated in time through the separator according to different alcohol-oil-phase wetting properties. The method has the advantages that reaction time is extremely short, a catalyst does not need to be recycled, and the product is easily and directly separated. As the micro-channel reactor and the separator are combined, continuation and miniaturization of the whole production process of the biodiesel are achieved.

Description

technical field [0001] The present invention relates to a kind of preparation of biodiesel and the separation method of its product, especially relate to a kind of using grease and low-carbon alcohol as raw material, carry out transesterification reaction to prepare biodiesel through the microchannel reactor loaded with acidic ionic liquid and utilize microchannel The separator enables a real-time separation method of products. Background technique [0002] Energy and environmental issues have long been raised by people. Experts estimate that the world's oil resources will be exhausted by 2050. Extensive use of traditional fossil fuels not only brings water, soil, and air pollution, but also brings irreparable greenhouse effects, thus forcing people to look for a renewable and environmentally friendly new energy source to replace traditional fossil fuels. Biodiesel is a renewable and environmentally friendly energy source. [0003] Biodiesel refers to fatty acid esters obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C11C3/10
CPCB01J19/0093C11C3/10Y02E50/10
Inventor 李玲徐鑫王晓达邱挺叶长燊王红星黄智贤
Owner FUZHOU UNIV
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