Better water chemistry practices can increase reliability of sulfur recovery units
Petroleum refineries use a variety of waste-heat steam generators to remove excess heat from product streams. Sometimes, these waste-heat steam generators or boilers are called condensers—a term that describes the process on the product side. The sulfur recovery unit (SRU) is a key unit because it generates large quantities of high- and low-pressure steam. Refineries have modified their SRUs during the past decade to:
Increase energy efficiency
Accommodate more stringent sulfur specifications for finished products
Meet stricter gas stack emission regulations.
In addition, more sulfur-recovery capacity has been needed as refineries increased the complexity of the processing
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