High pressure process for sulfur recovery from a hydrogen sulfide containing gas stream

Abstract From the Canadian patent

This invention provides a process for recovering elemental sulfur from a gas containing hydrogen sulfide. The process comprises combusting the gas containing hydrogen sulfide in a furnace with an oxygen-containing gas to provide hydrogen sulfide and sulfur dioxide, the hydrogen sulfide and sulfur dioxide are then reacted to form a gaseous stream comprising water vapor, sulfur vapor, and other acid gas components. The gaseous stream is cooled and divided into a combined liquid water and liquid sulfur stream and a remaining process gas stream substantially free of water at a pressure greater than 50 psia such that water and sulfur are condensed concurrently and at a temperature above the …