Oil & Gas / Refining

Sulfur Recovery

The Modified Claus Process is the most commonly used sulfur recovery process. Other common processes include the Amoco Cold Bed Adsorption (CBA) process and Shell’s Claus Off-Gas Treating (SCOT) process. The standard Modified Claus Process incorporates an initial thermal reaction stage that removes up to 70% of the sulfur followed by three catalytic reaction stages, each recovers more sulfur. Recovery rates will range between 94% and 99.9% depending on the process used. In some cases, a tail gas cleanup process may be incorporated.

Sulfur recovery processes require triple offset valves to reliably operate as isolation and control valves for acid gas, isolation and control of combustion air, reactor bypass lines, sulfur run down lines, sulfur switching valves, and sulfur tail gas block valves.

  • \"\"Ballast
  • Co-Generation
  • Coker Light Ends
  • Cryogenic LNG Isolation
  • Dirty Hot Cracking Gas Stop and Control
  • Dump Valve (offshore)
  • Flare Gas Hydrogen and Sour Gas Control and Isolation
  • Fluidized Catalytic Cracker
  • Fuel Oil Storage Isolation
  • Gasification Air Separation
  • Gasoline
  • Hydrogen Processes
  • Hydrotreating Processes
  • Light Ends
  • Molten Sulphur
  • Refinery Desulphurization Cooling Water
  • Reforming Processes
  • Steam Supply Stop and Control
  • Stop and Control Valves
  • Sulphur Condenser\"\"