Tail gas treatment process of Claus process

摘要

The present invention relates to a tail gas treatment process of the Klaus process, which is widely known for sulfur removal and recovery techniques. The conventional Klaus tail gas treatment process is expensive to install and run, and it is difficult to completely remove SOx in any process, and eventually SOx is discharged through the incinerator. The present invention converts the sulfur and sulfur compounds in the tail gas into hydrogen sulfide at a reaction temperature of 175-325 ° C. using a hydrogenation catalyst in a hydrogenation catalytic reactor without burning tail gas of the Klaus process, and then collects hydrogen sulfide in the Klaus process. The recycle provides a tail gas treatment process for the Klaus process that does not release SOx into the atmosphere. In this process, the hydrogenation catalyst is mainly used as the transition metal and VB, Group VIB metal as it is or supported on a carrier such as alumina, silica, alumina-silica.