Method for reducing discharge of oxidization raffinate

Abstract

The invention provides a method for reducing the discharge of oxidization raffinate, comprising the following steps of: discharging the oxidization raffinate in an upper tower of an oxidization tower to the bottom of a middle tower through an upper tower raffinate discharging pipe so that the oxidization raffinate is mixed with hydrogenation liquid and air entering the middle tower; discharging the oxidization raffinate in the middle tower to the bottom of a lower tower through a middle tower raffinate discharging pipe so that the oxidization raffinate is mixed with hydrogenation liquid and air entering the lower tower; and discharging out the oxidization raffinate at the bottom of the lower tower through a lower tower raffinate discharging pipe, adding water to dilute the oxidization raffinate and then sending to a sewage treatment system. The invention has the functions of improving the oxidization yield of the hydrogenation liquid, reducing the consumption of materials such as phosphoric acid and the like, reducing the product cost of the sewage treatment and improving the product quality, and is beneficial for the solving of the safety problem in the oxidization process when producing hydrogen peroxide by using an anthraquinone method.

Description

technical field [0001] The invention relates to a production method for producing hydrogen peroxide by an anthraquinone method, in particular to a production method for oxidizing hydrogenated liquid. Background technique [0002] The development of hydrogen peroxide production methods in my country has roughly experienced three development stages: electrolysis, nickel catalyst stirred tank hydrogenation process anthraquinone method and palladium catalyst fixed bed hydrogenation process anthraquinone method. The anthraquinone method of the hydrogenation process is the main production method. Chinese patent application number 200710113082.0, date of application November 2, 2007, date of publication May 14, 2008, the patent application titled "A Method for Producing Hydrogen Peroxide by Anthraquinone Method" discloses a method for producing hydrogen peroxide by anthraquinone method The method comprises the steps of putting a palladium catalyst into a hydrogenation tower to pas...

AI Technical Summary

Problems solved by technology

Because the degradants in the oxidation raffinate float above the water phase, phosphoric acid and hydrogen peroxide are also discharged in large quantities while the degraded substances are discharged, which affects the oxidation yield of the hydrogenated liquid, while phosphoric acid and hydrogen peroxide are discharged in large quantities. discharge, causing material loss, increasing the amount of sewage discharged in the production process, and easily causing the phosphorus content in the wastewater to exceed the standard, causing pollution to the environment and increasing the cost of sewage treatment

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