Method for separating catalyst by using ceramic membrane filter, and apparatus thereof

A filter separator and ceramic membrane technology, which is applied in the chemical industry, can solve problems such as energy-consuming and cost-intensive, inconsistent operation cycles, and achieve the effects of reducing times and costs, prolonging operation cycles, and improving service life

Active Publication Date: 2013-01-02
FUJIAN EVERSUN TECH CO LTD
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Problems solved by technology

The separation process of this connection relationship cannot achieve the same transmembrane pressure difference between the two membrane modules connected in series, and due to the inconsistency of the production load (clear liquid output) of the two membrane module

Method used

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  • Method for separating catalyst by using ceramic membrane filter, and apparatus thereof
  • Method for separating catalyst by using ceramic membrane filter, and apparatus thereof
  • Method for separating catalyst by using ceramic membrane filter, and apparatus thereof

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Embodiment Construction

[0019] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0020] refer to Figure 2~3 , a method for separating catalysts by ceramic membrane filters, comprising the following steps: (1) providing a device for separating catalysts by ceramic membrane filters, the device comprising a reactor, two or three sets of parallel ceramic membrane filter separators and Reaction product intermediate tank, each group of ceramic membrane filter separators contains two series of first membrane modules and second membrane modules; (2) The reaction turbid liquid mixture is pressurized to each group of ceramic membrane filtration through the circulation pump of the reactor Separator, each first membrane module is connected to the circulating liquid feed pipe of the reactor, each second membrane module is connected to the circulating liquid outlet pipe of the reactor, and each first membrane module and the second membrane modu...

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Abstract

The present invention relates to a method for separating a catalyst by using a ceramic membrane filter, and an apparatus thereof, wherein discharged clear liquid of two membrane assemblies connected in series separately enter corresponding discharged clear liquid collection tubes, and then separately enter reaction product intermediate tanks. According to the present invention, the traditional clear liquid discharging way of the two membrane assemblies connected in series is changed so as to achieve the same transmembrane pressure difference of the two membrane assemblies connected in series, and concurrently achieve the same production load (a mount of the discharged clear liquid) of the two membrane assemblies, such that operation periods of the two membrane assemblies connected in series are the same, a service life of the ceramic membrane tube is substantially improved, and the ceramic membrane tube is only required to be chemically cleaned after operating about 2-3 months so as to prolong an operation period of the device and substantially reduce the number and cost of chemical cleaning.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method and a device for separating a catalyst by a ceramic membrane filter, and is particularly suitable for preparing cyclohexanone oxime by ammoximation reaction of cyclohexanone. Background technique [0002] The new process of preparing cyclohexanone oxime by ammoximation reaction of cyclohexanone is to put cyclohexanone, ammonia and hydrogen peroxide in the same reactor to synthesize cyclohexanone oxime in one step. Compared with other processes, it has the advantages of short process, environmental friendliness, mild reaction conditions and low equipment investment. The process has received attention since the 1960s, but it was only recently that it became economically viable on an industrial scale thanks to improvements in titanium-silicon molecular sieve catalysts and hydrogen peroxide production technology. In recent years, Sinopec and Italy's En...

Claims

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Application Information

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IPC IPC(8): B01D35/00B01D61/00
Inventor 任欣吴道斌
Owner FUJIAN EVERSUN TECH CO LTD
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