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Resource Utilization of Sulfur Paste

2023-09-20

Sulfur paste is a by-product of wet desulfurization process. The by-product mainly contains sulfur (70%left and right), solid slag, etc., belong to the category of hazardous waste. Sulfur paste mainly comes from traditional iron and steel enterprises, thermal power generation enterprises, coal chemical enterprises desulfurization device and huge output. At present, the main direction of resource recycling is to recover sulfur or sulfuric acid.

Resource recovery production of sulfur paste Sulfur technology is mainly3Class ：①Melting method;②solvent extraction method ;③Gasification method. There are two representative processes for acid production. The two processes are mainly distinguished in the pretreatment part. The first is to separate the sulfur paste and desulfurization waste liquid from the water content through a centrifuge.50%About the sulfur slurry into the incinerator incineration acid, this process is higher operating costs, the amount of dilute sulfuric acid produced is larger, but the site labor intensity is small, high degree of automation;50%The slurry is dried to reduce the moisture to <5%Sulfur powder is produced, and the sulfur powder enters the incinerator for incineration. This process has lower operating costs, but the site environment is not ideal.