System and method for producing hydrogen peroxide by anthraquinone process

Abstract

The system of the invention relates to a system and a method for producing hydrogen peroxide by anthraquinone process, the bottom of a working liquid tank is connected with an inlet of a hydrogenation device by a working liquid pump and a working liquid supply pipe, an outlet of the hydrogenation device is connected with a hydrogenation liquid tank, the bottom of the hydrogenation liquid tank is connected with an inlet of an oxidation tower by a hydrogenation liquid pump, a hydrogenation liquid tank output pipe, a hydrogenation liquid filter and a hydrogenation liquid cooler, an outlet of the oxidation tower is connected with an oxidation liquid output pipe, an outlet of a hydrogenation reactor is connected with catalyst filters, outlets of the catalyst filters are respectively connected with a hydrogenation liquid outlet pipe and a hydrogenation reactor working fluid backflush tube; the bottoms of the catalyst filters are connected with the working liquid supply pipe, the working liquid supply pipe is inserted into the inner cavity of the hydrogenation reactor from the middle part, the top of the hydrogenation reactor is in plug connection with a catalyst adding pipe, and a hydrogen supply pipe extends downward to the bottom of the hydrogenation reactor, and bends to extend upward to the lower center of the hydrogenation reactor. The system can be continuous in manufacture, and has low unit consumption of product and high production efficiency.

Description

technical field [0001] The invention relates to a system for producing hydrogen peroxide by an anthraquinone method, and also relates to a method for producing hydrogen peroxide by an anthraquinone method, belonging to the technical field of hydrogen peroxide production. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material, widely used in papermaking, textile, medicine, chemical industry, electronics, environmental protection and other fields. Hydrogen peroxide decomposes to produce water and oxygen, which has no secondary pollution to the environment and conforms to the concept of green product production. [0003] In the prior art, hydrogen peroxide is usually produced by the anthraquinone method. The anthraquinone method uses 2-ethylanthraquinone as a carrier and palladium as a catalyst to directly synthesize hydrogen peroxide from hydrogen and oxygen, followed by hydrogenation. , oxidation, extraction and post-treatment process...

AI Technical Summary

Problems solved by technology

The traditional oxidation tower is a hollow tower body. The hydrogenated liquid and air enter the oxidation tower from the bottom at the same time, and go up while stirring. The air bubbles are relatively large, the contact area between the hydrogenated liquid and air is small, and the oxidation efficiency is relatively low. Usually, an oxidation The upper section tower, the oxidation middle section tower and the oxidation lower section tower have undergone multiple oxidations before entering the extraction process

Large equipment investment and low oxidation efficiency

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