Innovative process for multipoint sequential SO2 injection in Claus sulfur recovery unit

摘要

This paper describes a newly patented process utilizing distributed SO2 injection to increase the capacity of existing Claus units. It also reduces the equipment requirement for new plant sulfur recovery unit applications by eliminating the requirement for traditional thermal reactors, large waste heat boilers, and traditional re-heaters. The SO2 is produced by a unique processing unit that also provides high quality nitrogen for use onsite as a byproduct.