A Chinese-style device for circulating and regenerating working fluid in the process of producing hydrogen peroxide by anthraquinone method

Abstract

The invention discloses a pilot scale device for recycling and regenerating working fluid during production of hydrogen peroxide by an anthraquinone process. The pilot scale device comprises a hydrogenation reactor, a first cooler, a first regulating valve, a first working fluid regeneration reactor, a second cooler, a first buffering bottle, a first charging pump, an oxidizing reactor, a first discharging pump, a decomposing bed, a second buffering bottle, a second charging pump, a second regulating valve, a heater, a second working fluid regeneration reactor, a third cooler and a second discharging pump. The decomposing bed is provided, so that the hydrogen peroxide can be decomposed immediately, and the security performance of a working fluid recycling and regenerating device is enhanced; moreover, working fluid recycling and regenerating tests can be performed continuously through the decomposing bed in order to test the performance of a working fluid recycling and regenerating catalyst and the working parameters of working fluid recycling and regenerating, so that the security of recycling tests is improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide production, in particular to a Chinese-style device for circulating and regenerating working fluid in the process of producing hydrogen peroxide by anthraquinone method. Background technique [0002] The anthraquinone method is the current industrial production of H 2 o 2 main method. The process of producing hydrogen peroxide by the anthraquinone method is to dissolve the working carrier in an organic solvent to form a working solution, and the working solution is hydrogenated, oxidized and extracted to obtain hydrogen peroxide. The working carrier can be an alkyl anthracene Quinone and / or hydrogenated alkylanthraquinone, the organic solvent is generally a mixed solvent of heavy aromatic hydrocarbons and esters or higher alcohols. In the hydrogenation process, in the presence of a hydrogenation catalyst, the working carrier is hydrogenated with H2 to generate the corresponding alkylh...

AI Technical Summary

Problems solved by technology

The generation of degradation products not only continuously reduces the anthraquinone content in the working fluid, but also reduces the H 2 o 2 The preparation efficiency, but also cause the change of the physical properties of the working liquid, so that the reaction process cannot be carried out normally

[0004] The current device for producing hydrogen peroxide by the anthraquinone method and the working fluid recycling and regeneration device are carried out in stages. The current working fluid recycling and regeneration device has no function of decomposing the remaining hydrogen peroxide. The hydrogen peroxide content exceeds the standard, which will cause the explosion of the device. At present, there is no device with high safety performance that can continuously test the recycling and regeneration of the working fluid in the production process of the anthraquinone method. In order to better study the recycling and regeneration of the working fluid in the anthraquinone method Process conditions and catalyst selection, there is an urgent need for a device with high safety performance that can continuously test the circulation and regeneration of working fluid in the production process of anthraquinone method

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