Water washing method for producing hydrogen peroxide by anthraquinone method

Abstract

The invention provides a water washing method for producing hydrogen peroxide by an anthraquinone method. The amount of a working solution entering a water washing tower through an alkali tower outletis controlled by an alkali tower outlet regulating valve; the working solution slowly enters from the bottom of the water washing tower; deionized water is injected into the water washing tower through a pure water elevated tank; a pure water regulating valve controls the pure water injection amount in the water washing tower; wherein the interface of water and the working solution in the water washing tower is controlled between 30% and 60%, the deionized water and the working solution are mixed, the working solution overflows from bottom to top in the water washing tower and then enters a carclazyte bed after overflowing at the top of the water washing tower, a water phase is discharged into a wastewater collecting tank through the bottom, and the pure water replacement amount is controlled by detecting conductivity analysis data in wastewater. According to the method, the content of hydrogen peroxide in the working solution is lower, the working solution is further purified, the oxidation and hydrogenation efficiency is improved, the activity of a palladium catalyst is prolonged, and the regeneration period of the palladium catalyst is prolonged; the consumption of 2-ethylanthraquinone and activated aluminum oxide is greatly reduced, the production cost is reduced, and the market competitiveness is improved.

Description

technical field [0001] The invention relates to a washing method for producing hydrogen peroxide by an anthraquinone method, and belongs to the technical field of hydrogen peroxide production. Background technique [0002] The industrial production methods of hydrogen peroxide mainly include electrolysis method, anthraquinone method, isopropanol method, cathodic and anode reduction method, and hydrogen-oxygen direct chemical method. The electrolysis method has high current efficiency, short process flow and high product quality, but due to high power consumption and high production cost, it is not suitable for large-scale industrial production and has been gradually eliminated; the oxygen anode reduction method produces hydrogen peroxide, using water and air as raw materials , has the characteristics of low cost, less investment, and little pollution, but at present this method has not yet realized industrialized production. Therefore, the anthraquinone method is currently ...

AI Technical Summary

Problems solved by technology

In the hydrogen peroxide process of anthraquinone method, a certain amount of aluminum powder will be entrained by the recycled working fluid passing through the clay bed, and certain salts will be produced when passing through the alkali tower in a fully acidic working environment, which will enter the hydrogenation tower together with the working fluid, affecting Hydrogenation reaction, but the existing technology has not solved it well

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