Method of producing polyaluminum chloride with wasted anthraquinone regeneration agent

Abstract

The invention discloses a method of producing polyaluminum chloride with a wasted anthraquinone regeneration agent. The method includes the steps of: a) mixing the wasted anthraquinone regeneration agent with activated carbon, grinding the mixture into fine powder, adding a combustion agent, and fully stirring the materials to obtain a mixture; b) performing aerobic roasting to the mixture in the step a) to obtain a roasted material; c) mixing the roasted material with hydrochloric acid to dissolve-out the aluminum oxide to obtain a dissolving-out solution; d) slowly adding hydrochloric acid dropwise to the dissolving-out solution, uniformly stirring the solution, after the hydrochloric acid is all added, adding a NaOH solution to regulate the pH value, and performing hydrolytic polymerization aging to obtain a polyaluminum chloride solution; and e) diluting and filtering the polyaluminum chloride solution, evaporating and concentrating the solution, and drying the solution to obtain solid polyaluminum chloride. The method has simple process and fewer steps, is low in investment and cost, and has promoting significance.

Description

technical field

[0001] The invention belongs to the field of chemistry, and specifically relates to a method for preparing polyaluminum chloride by utilizing waste anthraquinone regeneration agent. Background technique

[0002] Hydrogen peroxide, also known as hydrogen peroxide, is one of the main basic products in the chemical industry. Because hydrogen peroxide is decomposed as an oxidant, it only produces oxygen and water, and has no secondary pollution to the environment. It is a "green" oxidant, so it is widely used in various fields of the national economy. The anthraquinone method is currently the main method for the industrial production of hydrogen peroxide. Alkyl anthraquinones are dissolved in organic solvents to prepare working fluids. The working fluids are converted into alkylhydroanthraquinones by hydrogenation under the action of a supported hydrogenation catalyst, and then oxidized and converted into alkyls under the action of pure oxygen or air. Anthraqui...

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