Method for separating methanol/methyl methacrylate mixed system

A methyl methacrylate, methanol technology, applied in the separation/purification of hydroxyl compounds, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of high energy consumption, complex process, etc. Continuous, less demanding effects
CN101857522AActive Publication Date: 2010-10-13JIANGXI NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
JIANGXI NORMAL UNIVERSITY
Publication Date
2010-10-13

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Abstract

The invention relates to a method for separating a methanol / methyl methacrylate mixed system, which is implemented by adopting a pervaporation process of a Beta molecular sieve membrane. In the method for preparing the Beta molecular sieve membrane for separating the methanol / methyl methacrylate mixed system, the dense and continuous Beta molecular sieve membrane is prepared by adopting a secondary growth method under the condition of high water-silicon ratio and the use of a cheap template agent. The Beta molecular sieve membrane prepared on tubular supporting bodies of various materials hasa good shape-selective separation effect and meets the requirement of separating the methanol from the methanol / methyl methacrylate mixed system. When the Beta molecular sieve membrane prepared underan optimized condition is used for performing pervaporation on the 60-DEG C methanol / methyl methacrylate (with mol percentage of 50:50) system, and the flux and the separation factors are more than 0.50 kg / m<2>*h and 650 respectively. The continuous Beta molecular sieve membrane with dense crystal is prepared through a series of test on synthesis steps of a seed crystal coating method, a formula of raw materials, a reaction condition and the like, so the method for separating the methanol / methyl methacrylate system is determined.
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Description

technical field

[0001] The invention provides a method applied to the separation of a methanol / methyl methacrylate mixed system, which belongs to the field of chemical separation and preparation of inorganic membrane materials. Background technique

[0002] Separation is the main process of chemical production. Due to the limitation of chemical balance or the existence of side reactions, traditional production methods often cannot make effective use of raw materials. Moreover, the single-pass conversion rate, selectivity and yield are not ideal, and a separation and circulation system must be installed. This is also the main reason for the high energy consumption and large investment of chemical enterprises so far. As a new high-efficiency separation technology, membrane separation technology has been widely used in chemical industry, environmental protection, electronics, light industry, textile, petroleum, food, medicine, bioengineering, energy engineering and other fields...

Claims

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