Method for catalyst recovery and furfuryl alcohol clarification during furfuryl alcohol production

A production process and catalyst technology, applied in the chemical industry, organic chemistry, sustainable manufacturing/processing, etc., can solve the problems of poor catalyst separation effect, long cycle, poor effect, etc., to improve catalyst separation effect and reduce catalyst content , the effect of shortening the process route

Inactive Publication Date: 2010-09-29
厦门市威纳通膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the disadvantages of poor catalyst separation effect, long period and poor effect in the current furfuryl alcohol production process, the present invention provides an improved furfuryl alcohol catalyst separation process based on the ceramic membrane separation technology, so as to achieve energy saving, reduce production cost and improve separation effect

Method used

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  • Method for catalyst recovery and furfuryl alcohol clarification during furfuryl alcohol production
  • Method for catalyst recovery and furfuryl alcohol clarification during furfuryl alcohol production

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Effect test

Embodiment 1

[0017] In the furfuryl alcohol storage tank, the crude furfuryl alcohol contains 2% silicone catalyst, the average particle size of the catalyst is 5 μm, the ceramic membrane is made of aluminum oxide, the pore size is 800nm, and the working pressure is 0.1-0.5Mpa. In the production process, the crude furfuryl alcohol is transported to the ceramic membrane module through the feeding pump, the catalyst content in the dialysate is 0.18‰, the removal rate of the catalyst reaches 99.1%, and the clarity of the furfuryl alcohol solution is greatly improved.

Embodiment 2

[0019] In the furfuryl alcohol storage tank, the crude furfuryl alcohol contains 1.5% ketone chromium catalyst, the average particle size of the catalyst is 4 μm, the ceramic membrane is made of aluminum oxide, the pore size is 100 nm, and the working pressure is 0.1-0.5 Mpa. In the production process, the crude furfuryl alcohol is transported to the ceramic membrane module through the feeding pump, the catalyst content in the dialysate is 0.075‰, the removal rate of the catalyst reaches 99.5%, and the clarity of the furfuryl alcohol solution is greatly improved.

Embodiment 3

[0021] In the furfuryl alcohol storage tank, the crude furfuryl alcohol contains 1% silicone catalyst, the average particle size of the catalyst is 1 μm, the material of the ceramic membrane is aluminum oxide, the pore size is 200nm, and the working pressure is 0.1-0.5Mpa. In the production process, the crude furfuryl alcohol is transported to the ceramic membrane module through the feeding pump, the catalyst content in the dialysate is 0.08‰, the removal rate of the catalyst reaches 99.1%, and the clarity of the furfuryl alcohol solution is greatly improved.

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Abstract

The invention discloses a method for catalyst recovery and furfuryl alcohol clarification during furfuryl alcohol production, which comprises the following specific steps that: rough furfuryl alcohol carrying a catalyst is delivered from a rough furfuryl alcohol storage tank to a ceramic membrane separation device through a delivery pump, reflux containing the catalyst is intercepted by the ceramic membrane system through cross-flow filtration and returns to the rough furfuryl alcohol storage tank through a return pipe, and the clear furfuryl alcohol solution penetrates through the ceramic membrane system and flows into the clear furfuryl alcohol solution storage tank. The method of the invention has the advantages of high catalyst removal rate, low energy consumption, short production cycle and the like.

Description

technical field [0001] The invention belongs to the technical field of furfuryl alcohol production, in particular to a catalyst separation device and method in the furfuryl alcohol production process. Background technique [0002] Furfuryl alcohol, also known as furan methanol, is an important fine chemical raw material, mainly used in the production of furfuryl alcohol resin, furan resin, etc. Furfuryl alcohol is also an excellent organic solvent, and can also be used in synthetic rubber, pesticides, and as rocket fuel. Furfuryl alcohol is mainly industrially produced by the reaction of furfural and hydrogen in the presence of a catalyst. [0003] The reaction formula of furfural and hydrogen reaction is: Q is the heat of reaction. The furfural hydrogenation process is generally carried out under high temperature and high pressure conditions. After a large tank sedimentation or simple centrifugal filtration to filter out part of the catalyst, most of the catalyst enters...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/44
CPCY02P20/10Y02P20/50
Inventor 杨效贤崔秀文林宝辉庄稼汉
Owner 厦门市威纳通膜科技有限公司
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