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PROCESS FOR PREPARING SULFUR FROM REDUCTION OF SULFATE/ NITRATE BY IRON-CARBON AND RECOVERING DESULFURIZATION/ DENITRATION AGENTS
PROCESS FOR PREPARING SULFUR FROM REDUCTION OF SULFATE/ NITRATE BY IRON-CARBON AND RECOVERING DESULFURIZATION/ DENITRATION AGENTS
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机译:通过铁 - 碳减少硫酸盐/硝酸盐的制备方法,回收脱硫/脱硝酸剂
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摘要
The present invention discloses a process for preparing sulfur from reduction of sulfate/nitrate by iron-carbon and recovering desulfurization/denitration agents. High-concentration SO2 flue gas produced by calcination of a sulfate and NOx produced by heating decomposition of a nitrate can be directly reduced to elemental sulfur vapor and N2 through reaction with an iron-carbon material at a high temperature. Then, after dust removal, cooling and fine dust removal, sulfur is recovered by a sulfur recovery device, and metal oxides can replace alkaline mineral resources such as limestone as raw materials of desulfurization (denitration) agents. This process can recycle the desulfurization and denitration agents.
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