Claus waste heat boiler economics Part 2: mechanical considerations: The design of a cost effective waste heat boiler faces many,often opposing factors affecting the performance and reliability of the exchanger

摘要

The Claus waste heat boiler(WHB)runs under quite harsh operating conditions,has serious reliability challenges,and is one of the most fragile equipment items in the sulphur recovery unit(SRU).It not only provides heat recovery from the thermal section,but it also affects the unit's hydrogen balance and COS levels through recombination reactions.