Production method of hydrogen peroxide

Abstract

Relating to the technical field of large-scale high concentration hydrogen peroxide production technologies, particularly to hydrogen peroxide production technologies by an anthraquinone process, the invention provides a production method of hydrogen peroxide. The method includes: taking heavy aromatics, tetrabutylurea and trioctyl phosphate as solvents, adopting 2-ethylanthraquinone as a reaction material, adding a well prepared working solution into a circulating working solution storage tank, making use of a circulating working solution pump to send the working solution into a working solution thermoregulator, using circulating cooling water to lower the temperature of the working solution to about 35DEG C, then bringing the working solution to the bottom of a fluidization hydrogenation reactor, adding a hydrogenation catalyst into the fluidization hydrogenation reactor in advance through a catalyst adding groove, at the same time, passing compressed hydrogen through a hydrogen buffer filter to filter out impurities, then letting the compressed hydrogen enter the bottom of the fluidization hydrogenation reactor, using the compressed hydrogen to blow and stir the catalyst and the working solution so as to undergo hydrogenation reaction at a temperature of about 50DEG C, under a pressure of about 0.26mPa, and at hydrogenation efficiency of about 13g / L.

Description

technical field [0001] The invention relates to the technical field of large-scale high-concentration hydrogen peroxide production technology, in particular to the production technology of hydrogen peroxide by anthraquinone method. Background technique [0002] The existing domestic anthraquinone hydrogen peroxide hydrogenation reactor is in the form of a fixed bed, the catalyst is fixed, the liquid trickles and flows downward in the catalyst layer, and the hydrogen and the liquid flow downward at the same time for the hydrogenation reaction. Flow, catalyst agglomeration, uneven hydrogenation reaction, large reaction resistance, many side reactions, high consumption of raw materials, large amount of catalyst, high product cost and other defects; the oxidation reactor is a working liquid and compressed air flowing upwards, and there is an oxidation tower efficiency Low, low oxidation yield, high air consumption, high oxygen content in the tail gas and other defects; t...

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Problems solved by technology

[0002] The existing domestic anthraquinone hydrogen peroxide hydrogenation reactor is in the form of a fixed bed, the catalyst is fixed, the liquid trickles and flows downward in the catalyst layer, and the hydrogen and the liquid flow downward at the same time for the hydrogenation reaction. Flow, catalyst agglomeration, uneven hydrogenation reaction, large reaction resistance, many side reactions, high consumption of raw materials, large amount of catalyst, high product cost and other defects; the oxidation reactor is a working liquid and compressed air flowing upwards, and there is an oxidation tower efficiency Low, low oxidation yield, high air consumption, high oxygen content in the tail gas and other defects; the extraction tray is a single-layer plate structure, there are defects such as poor polymerization of the working liquid, low product concentration, and high residual hydrogen peroxide in the working liquid; the use of concentrated alkali The residual hydrogen peroxide and water in the working liquid are removed by the liquid, the alkali consumption is high, the production sewage generated is difficult to treat, and the system production safety is poor, etc.

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