Method for separating chloro phenol reaction solution

Abstract

A method for a separating chloro phenol reaction solution comprises the specific steps of: enabling the chloro phenol reaction solution (the chloro phenol reaction solution is prepared by phenol and chlorine and comprises such all or part of the main components as phenol, o-chlorophenol, p-chlorophenol, 2,4-dichlorophenol, 2,6-dichlorophenol, 2,4,6-trichlorophenol and a small amount of tar) to continuously flow through a tower 1, a tower 2, a tower 3, a tower 4, a detar device (scraper film evaporator 6) and a tower 5, and controlling the temperatures of tower tops and tower bottoms of rectifying towers according to the different boiling points of the components of the reaction solution so as to separate the components from the tower tops. According to the method, the production capacity is large, the separation effect is excellent, the energy consumption is low, and the chloro phenol reaction solution is applicable to large-scale production.

Description

technical field

[0001] The invention relates to the technical field of production of chlorophenols, and mainly relates to the separation of chlorophenol mixtures, in particular to a method for continuously separating chlorophenol reaction liquids. Background technique

[0002] Chlorophenols are a very important class of compounds, mainly o-chlorophenol, p-chlorophenol, 2,4-dichlorophenol, 2,6-dichlorophenol, 2,4,6-trichlorophenol and so on.

[0003] p-Chlorophenol is mainly used to make dyes and medicines, and is also used as a denaturant for alcohol and a selective solvent for refined mineral oil, etc. It can also be used for microscopic analysis, pharmaceutical industry, and plant growth promoter; Pesticides and dyes and other organic synthesis raw materials; 2,4-dichlorophenol is mainly used as an intermediate of fenben and a raw material for the synthesis of other pesticides; 2,6-dichlorophenol is an important medicine "diclofenac", "ERP-II " and pesticide intermediates...

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