Conversion Chart
View our conversion calculators for help with particulate size, temperature, pressure, flow, volume, and viscosity.
Refinery Alkylation Solutions
Process Purpose
Combine light olefins (butylene, pentene, propylene) with iso-butane to form high octane alkylate (C8’s) as a gasoline blending component in the presence of a highly acidic catalyst (HF or H2SO4). Alkylate burns very cleanly and has excellent anti-knock properties.
Alkylation Applications
Reactor and Product Recovery:
- Feed L/L Coalescer to Remove Water from Olefins (Make-up i-C4). Water accelerates acid “spend,” resulting in high operating costs.
- L/L Coalescer to Remove Water from iso-Butane Recycle. This is generally the most water laden stream due to various wash steps upstream of DIB.
- L/L Coalescer to Remove Carried-over Caustic & Water Upstream of DIB Tower. Caustic and inorganic sulphates will form/deposit in the reboiler/tower trays. Carryover caustic in the i-C4 recycle will neutralize the acid catalyst
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