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 ...

Images