Process for the desulfurization of gas containing hydrogen sulfide

摘要

It has been believed that the Claus reaction in water without additive gives no more than very low conversion and some additive such as buffer or catalyst must be used to attain satisfactory H2S conversion. However, it was discovered that when H2S and SO2 are introduced in water simultaneously and continuously for hours, the conversion increased gradually and became steady at high level. The present invention was accomplished base on this inventive knowledge.