A kind of device and method for continuous separation of isopropyl phenol

A technology for isopropyl phenol and crystals, which is applied in the field of devices for continuous separation of isopropyl phenol, can solve the problems of difficulty in isopropyl phenol separation, low catalyst selectivity, and difficulty in industrialized production of isopropyl phenol, and saves equipment, reducing energy consumption, and shortening the effect of the purification process
CN103086846BActive Publication Date: 2015-08-19CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2015-08-19

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Abstract

The invention discloses an apparatus and a method for continuously separating o-isopropylphenol and p-isopropylphenol. The apparatus comprises: a tower 1 and a tower 2, wherein the tower 1 and the tower 2 are connected in series, rotation scrapers are respectively arranged on tower body axis centers inside the tower 1 and the tower 2, the lower portion inside the tower 1 is provided with a grid, the outer sides of the tower 1 and the tower 2 are provided with constant temperature material inlets, a liquid purification section, a crystal purification section, a melting purification section and a crystal deposition section are sequentially arranged inside the tower 1 from top to bottom, a residue liquid recovery section, a crystal re-purification section and a crystal re-deposition section are sequentially arranged inside the tower 2 from top to bottom, and an outlet on the bottom of the tower 1 is connected with the constant temperature material inlet on the middle part of the tower 2. The method comprises that: a material requiring separation is subjected to continuous re-crystallization in the tower 1 and the tower 2 to separate o-isopropylphenol and p-isopropylphenol. With the apparatus and the method, continuous material feeding and material discharging can be achieved, and high purity o-isopropylphenol and p-isopropylphenol products can be produced.
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Description

technical field

[0001] The invention relates to the field of chemical industry, and more specifically, relates to a device and a method for continuously separating isopropyl phenol. Background technique

[0002] Isopropylphenol mainly includes two isomers, p-isopropylphenol (p-IPP) and o-isopropylphenol (o-IPP). Among them, p-isopropylphenol (p-IPP) can be used as machine cleaners, wire coatings, synthetic resins, surfactants, adhesives and pharmaceutical and chemical intermediates, etc. body. In addition to being used as surfactant, adhesive and pharmaceutical intermediate, o-isopropylphenol (o-IPP) is particularly important as a synthetic intermediate of the pesticide leafhopper. At present, my country mainly adopts batch reaction to produce p-isopropyl phenol, often using aluminum phenate [Al(OC 6 h 5 ) 3 ] is a catalyzer, not only troublesome operation, low output, but also serious corrosion and pollution, low catalyst selectivity, and difficult separation of adjace...

Claims

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