A device and process integrating reaction and filtration applied in the hydrogen peroxide hydrogenation section

Abstract

The invention relates to a reaction-filtration integrated device for a hydrogen peroxide hydrogenation section and a hydrogen peroxide hydrogenation process. The reaction-filtration integrated device comprises a backwash tank and a reactor; a backwash liquid in the backwash tank goes into the reactor in two or more paths; a pipeline mounted at the bottom of the backwash tank is divided into two or more branches which are connected to a backwash liquid inlet of the reactor; the backwash liquid inlet and a hydrogenated liquid outlet are formed in the reactor. According to the reaction-filtration integrated device for the hydrogen peroxide hydrogenation section, after a working liquid, hydrogen and a catalyst are added, the mixed working liquid is stirred by a stirrer and guided by a guide cylinder to wash a filter element inside the reactor with cross flows, and therefore, the service life of the filter element can be prolonged; meanwhile, the catalyst is put in sufficient contact with the working liquid so that the reaction rate is increased; the hydrogenated liquid generated after a hydrogenation reaction flows to the inner side of the filter element from the outer side of the filter element; the reaction-filtration integrated device overcome the defects of many hydrogen peroxide hydrogenated liquid filtering devices, complex structure, large volume, large floor area, high device investment and the like at present.

Description

technical field [0001] The invention belongs to the technical field of energy saving and environmental protection, and in particular relates to a reaction and filtration integrated device and process applied to the hydrogen peroxide hydrogenation section. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide, is an important chemical raw material, which is widely used in many fields such as inorganic or organic synthesis, printing and dyeing bleaching, water treatment, polymer polymerization, and electronic chemicals. [0003] Most of the existing domestic hydrogen peroxide hydrogenation reactors are in the form of a fixed bed, the catalyst is fixed, and the hydrogen and working fluid flow down through the catalyst layer, there are bias flow, channel flow, catalyst agglomeration, uneven hydrogenation reaction, reaction There are many defects such as large resistance, many side reactions, high consumption of raw materials, large amount of catalyst, ...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing domestic hydrogen peroxide hydrogenation reactors are in the form of a fixed bed, the catalyst is fixed, and the hydrogen and working fluid flow down through the catalyst layer, there are bias flow, channel flow, catalyst agglomeration, uneven hydrogenation reaction, reaction Large resistance, many side reactions, high consumption of raw materials, large amount of catalyst, external filter equipment during filtration, large amount of circulating working fluid, etc.

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