Cu2+沉淀-氧化法脱除H2S废气回收硫磺研究

开发了一种用含Cu2 的溶液吸收H2S,并用Cu2 自氧化CuS制取硫磺的新工艺,Cu2 的还原产物CuCl2-由空气氧化再生,实现循环.考察了Cu2 浓度与净化效率的关系,研究了Cu2 、H 、助剂N的浓度和温度对Cu2 氧化CuS效率的影响及H 、助剂N的浓度、空塔气速和温度对Cu2 空气氧化再生效率的影响.结果表明,该技术对H2S废气净化效率100%,Cu2 氧化CuS及Cu2 空气氧化再生条件温和、效果好,终产物硫磺纯度高.

Study on H2S removal with Cu2+ by sedimentation-oxidation and sulfur recovery

A new technology of removing H_2S with solution containing Cu~(2 ) was developed in this thesis,CuS produced was oxidized by superfluous Cu~(2 ) and Cu~(2 ) can be recovered from the oxidation reaction of CuCl~-_2 with air,then the circulation was totally realized.The relationship between the concentration of Cu~(2 ) and the removal efficiency of H_2S was investigated,so did the effect on the oxidation rate of CuS by Cu~(2 ) influenced by the concentration of Cu~(2 ),H~ and the additive N,furthermore the function of the concentration of H~ and the additive N, superficial velocity,temperature to the regeneration rate of Cu~(2 )was studied.The purification efficiency of H_2S can reach to 100% and the operating condition required by the oxidation of CuS and Cu~ is conventional.The sulfur with high purity was produced in this process.