Technology for preparing sulfuric acid

Abstract

The invention relates to a technology for preparing sulfuric acid, in particular to a technology for preparing sulfuric acid by taking low-quality sulfur and a waste salt liquid containing sulfur that are generated by a coke oven gas wet oxidation desulfurization technology which takes ammonia as an alkali source and takes quinone, cobalt and ferrum compositions such as HPF as catalysts as raw materials, and through processes of incineration, waste heat recovery, wet purification, wet contact method conversion, and condensation into acid. The technology thoroughly solves the problem of treatment of a waste desulfurization liquid and low-quality sulfur that are generated by the coke oven gas wet oxidation desulfurization technology which takes the quinone, cobalt and ferrum compositions such as HPF, PDS and ZL as the catalysts, so that the desulfurization technology is completed; produced sulfuric acid can serve as a raw material for deamination of coal gas of a factory, and for production of ammonium sulfate, can be exported as sulfuric acid goods; and double purposes of resource recycle and environmental protection are achieved.

Description

technical field [0001] The invention relates to a process for producing sulfuric acid, especially the low-quality sulfur and sulfur-containing sulfur produced by the coke oven gas wet oxidation desulfurization process using ammonia as the alkali source and HPF and other quinone, cobalt, and iron compositions as catalysts. The salt waste liquid is used as raw material, and sulfuric acid is produced through incineration, waste heat recovery, wet purification, wet contact conversion and condensation into acid. Background technique [0002] Hydrogen sulfide contained in gas is a harmful substance. When undesulfurized gas is used for steelmaking and civil use, it will not only reduce the quality of steel, but also the sulfur dioxide produced by combustion will damage the environment and affect human health. Therefore, in order to meet the needs of the metallurgical industry and reduce the pollution to the atmosphere after gas combustion, it is necessary to remove the hydrogen su...

AI Technical Summary

Problems solved by technology

However, the desulfurization process is still not perfect: first, the product sulfur produced after desulfurization has low purity and poor quality, and is difficult to sell; second, the waste liquid generated during the desulfurization process lacks a relatively complete treatment process, which is likely to cause new environmental pollution

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