November 2007

Bonus Report: Water Management

Improve waterside operation for waste-heat boiler

Better water chemistry practices can increase reliability of sulfur recovery units

Huchler, L. A., MarTech Systems, Inc.

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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