Treatment method of sodium bisulfate solid hazardous waste

After dissolving the solid hazardous waste of sodium bisulfate with water, and using methanol or ethanol for polar extraction catalytic reaction, the problem of the difficulty of treating hazardous waste of sodium bisulfate in the fluorobenzene industry is solved, and efficient sodium sulfate production is achieved, reducing the need for reducing the use of sodium sulfate. Environmental pollution and resource waste have been improved, and treatment efficiency and purity have been improved.

CN119216347APending Publication Date: 2024-12-31DONGYING FUHUA DAYUAN NEW MATERIAL CO LTD +1
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Patent Information

Application Number
CN202411666336.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

In the fluorobenzene industry, the treatment of solid hazardous waste of sodium bisulfate is difficult. The existing technology has slow processing speed, high consumption, complexity and causes environmental pollution. The waste of sodium bisulfate resources is severely affected, affecting the environment and human health.

Method used

After dissolving the solid hazardous waste of sodium bisulfate with water, the polar extraction catalytic reaction is carried out with methanol or ethanol to remove impurities and produce high-purity sodium sulfate, and the treatment is carried out using a continuous mass production process.

Benefits of technology

It realizes efficient disposal of hazardous waste of sodium bisulfate, and produces high-grade, high-purity and high-quality sodium sulfate, reducing environmental pollution and resource waste, and improving treatment efficiency and purity.

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Abstract

The invention discloses a sodium hydrogen sulfate solid hazardous waste treatment method which comprises the following operation steps: S10) dissolving sodium hydrogen sulfate solid hazardous waste generated in a fluorobenzene production process through water to obtain feed liquid, and filtering the obtained feed liquid to obtain filtrate A; (S20) mixing the filtrate A obtained in the step (S10) with methanol or ethanol in a stirring state, and carrying out polar extraction catalytic reaction to obtain a solid-liquid mixture B; s30) filtering and separating the solid-liquid mixture B obtained in the step S20) to obtain filter residues C and filtrate D; and S40) the filter residue C obtained in the step S30) is dried and crushed to obtain high-purity sodium sulfate solid powder, the sodium hydrogen sulfate solid hazardous waste is efficiently treated, meanwhile, a continuous batch production process of high-grade, high-purity and high-quality sodium sulfate is formed, and the obtained high-grade sodium sulfate has a wide market application prospect.
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Citation Information

Patent Citations

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