Sulfuric acid alkylation process in the oil & gas industry

Feed of propene and butene monitoring

The lighter oils originating from the lower parts of the distillation column, after passing through Hydrotreaters and the Fluid Catalytic Cracker (FCC), produce low-molecular-weight alkenes (butenes (C4), pentenes (C5), propene (C3H6)) and also isobutene (C4H10). The acid alkylation process converts these streams into alkylate, a high octane and clean burning gasoline blending component. Depending on the acid used, the process is called either SAA (Sulfuric Acid Alkylation) or HFA (Hydrofluoric Acid Alkylation).

Requirements
  • Process control
  • Changing composition
Requirements
  • Process control
  • Agressive medium
Requirements
  • Avoid contamination
  • Varying levels of hydrocarbon emulsion and sulfuric acid
Requirements
  • Prevent overfill
  • Determine level in scrubber
Requirements
  • Maintain mass balance
  • Process control
Requirements
  • Visualisation and monitoring of critical processes
  • Control of reporting, trends and alarm handling
  • Statistical evaluation of measurement data
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