Method for treating phenol-based residues of rectifying still

Abstract

The invention provides a treatment method of phenol-based residues of a rectifying still. The treatment method comprises the following steps: carrying out reduced-pressure deep drawing on the phenol-based residues of the rectifying still to obtain a reduced-pressure pull-out substance and reduced-pressure deep drawing still residues; and subjecting the reduced-pressure deep drawing still residuesto carbonization to obtain a gas-phase product and activated carbon, or to extraction and cross-linking polymerization to obtain condensed polyaromatic hydrocarbon resin. Thus, phenol-based residual solid waste of the rectifying still can be effectively converted into an industrial product with excellent performance, environmental pressure is relieved, good economic benefit is obtained, wide application prospects are realized.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the technical field of solid waste treatment, in particular to a method for treating phenol-based rectification residue. Background technique [0002] Industrial solid waste, that is, industrial solid waste, is solid waste generated in industrial production activities, including industrial hazardous solid waste and general industrial waste, of which general industrial waste mainly includes salt mud, blast furnace slag and steel slag. The emergence of solid waste will occupy a large amount of land resources and increase cost input. [0003] Phenol-based rectification still residue is the rectification waste solid remaining in the crude phenol refining process. It is a hazardous waste that is easily soluble in water. Therefore, it will also pollute surrounding water bodies and soil resources, and will affect the ecological environment. The environmental balance wi...

AI Technical Summary

Problems solved by technology

[0005] Among them, the landfill method includes engineering warehouse or retention pond storage, landfill and deep well injection, but the landfill method greatly occupies land resources, and the harmful pollutants in it will leak into the groundwater layer and cause groundwater pollution.

[0006] The pyrolysis incineration method has low energy consumption, simple treatment process, and is easy to operate, but the combustion produces a large amount of greenhouse gases, sulfur and nitrogen oxides, and the combustion of halogenated hydrocarbons also produces dioxins, which aggravate air pollution

[0007] CN106902489A discloses a treatment method of CTC rectification still residue. The treatment method first adds solvent to the rectification still residue to do impurity removal process; Converting high-content pyridinium chloride into carbon, hydrogen, oxygen, and nitrogen compounds is convenient for incineration treatment, but this method will eventually use incineration treatment, which will still produce a large amount of greenhouse gases, sulfur and nitrogen oxides, which have certain pollution to the air

However, this method also has the problem that the facility site occupies a large area, takes a long time, and cannot meet the processing requirements of industrial continuous mass production.

[0010] In summary, there are few treatment methods for phenol-based rectification bottoms in the prior art, and the shortcomings of the general-purpose rectification bottoms treatment methods limit their application in the treatment of phenol-based rectification bottoms.

Images