Production process for recycling phenol residual liquid

Abstract

The invention belongs to the field of environmental protection and chemical engineering, and particularly relates to a production process for recycling phenol residual liquid. The production process is implemented by the aid of a raw material storage tank, a delivery pump, a tower bottom kettle, an electric heater, a rectifying tower, a condenser, a vacuum pump, a reflux ratio controller, collecting tanks, a venturi tube mixer, a phenol collecting tank, an extracting and separating tank, a circulating pump, a forced mixer, a static mixer, a pressure pump, an emulsifier storage tank, a fuel oil storage tank, an emulsified fuel oil collecting tank, a cryogenic device and an activated carbon adsorption device. The production process mainly includes process procedures of crude distillation separation, rectification separation, phenol purification, waste gas treatment and residue recycling. The process procedures are in intermittent production modes.

Description

technical field [0001] The invention belongs to the field of environmental protection chemical industry, and in particular relates to a production process for reusing phenol raffinate. Background technique [0002] Phenol raffinate refers to the part of the mixture left after separation of phenol during the production process of phenol by oxidation of cumene; its main components are α-methylstyrene, p-xylene, cumene, phenol, acetophenone, etc. , of which α-methylstyrene is the most. Acetophenone is used to make soap and cigarettes, and is also used as a solvent for cellulose esters and resins, and as a plasticizer in the production of plastics. It can be prepared by the reaction of benzene and acetic anhydride, or by the oxidation of ethylbenzene, or by the Fourier reaction of acetyl chloride and benzene under the action of aluminum trichloride; cumene is a colorless, special aromatic odor liquid. It is mainly used to produce phenol, acetone, α-methylstyrene, etc. It can ...

AI Technical Summary

Problems solved by technology

The traditional method of preparing cumene can be produced in large quantities, but due to the different selection of catalysts, it will cause corrosion of equipment, serious pollution of the production environment, and even cause a series of problems such as low purity of cumene.

At the same time, the production process is cumbersome and the production structure is complicated; α-methylstyrene is also called α-phenylethylene or phenylisopropene. It is a colorless or light yellow transparent liquid in appearance, and is often used as a polymerization reaction to produce glue. The monomer or modified monomer of the adhesive base material is one of the important monomers of synthetic resins and plastics, and it is also a modifier for polyester resins, alkyd resins and ABS resins

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