Process and device for preparing hydrogen peroxide

Abstract

The invention discloses a process and a device for preparing hydrogen peroxide, which are characterized in that working liquid from a circulating working liquid pump is firstly subjected to secondary filtration by a circulating working liquid filter to remove solid impurities possibly entrained, then is preheated to a required temperature, and enters a hydrogenation tower together with hydrogen from a hydrogen section and purified by a hydrogen filter; during hydrogenation reaction, according to hydrogenation efficiency, a working solution and hydrogen firstly enter the top of the previous section of tower, and flow downwards to pass through a palladium catalyst layer in the tower. The invention can realize industrial mass production and a safe hydrogen peroxide preparation process. According to the device, the extraction effect can be improved, pure water enters a preparation tank cavity from the interior of a sieve plate device, an inclined rotating ring is stressed in the pressurized entering process of the pure water and is combined with a rotating shaft to achieve the rotating stirring effect on internal liquid, the extraction effect of hydrogen peroxide is improved, and an inner ring block is in friction fit with the inner surface of the preparation tank; and the liquid mixing effect of the preparation tank on the side of the inner cavity is improved.

Description

technical field [0001] The invention relates to the technical field of chemical technology, in particular to a hydrogen peroxide preparation device and a preparation process thereof. Background technique [0002] Pure hydrogen peroxide is a colorless transparent liquid, miscible with water in any proportion. The viscosity, freezing point, vapor pressure, boiling point, latent heat of vaporization, concentration conversion relationship and density of aqueous hydrogen peroxide solution are listed in the appendix. [0003] Pure hydrogen peroxide is stable at any concentration, but it can be violently decomposed and Gives off a lot of heat. Rough surfaces in contact with hydrogen peroxide can also accelerate its decomposition. The decomposition reaction speed is closely related to temperature, pH value and impurity content, and will be accelerated with the increase of temperature, pH value and impurity content. The above factors should be fully considered in production, stor...

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Problems solved by technology

Moreover, in the process of hydrogen peroxide extraction, the pure water cannot fully combine the pure water with the oxidation solution during extraction, resulting in a low concentration of hydrogen peroxide after extraction and poor extraction effect; The concentration coefficient of hydrogen peroxide is unstable, which leads to poor purification effect in the later purification process of hydrogen peroxide

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