August 2001


Improve haze removal for FCC gasoline

This refinery used advanced coalescer techniques to separate very stable emulsions and dispersions by mechanical means

Wines, T. H., Pall Corp.; Darde, T., Pall Europe, Saint Germain-en-Lage; Katona, A., Mol-RT Refinery

Caustic carryover from a treater can cause downstream contamination of fluid catalytic cracked (FCC) gasoline; Result: off-specification product. Caustic forms a very stable emulsion with gasoline that results in high levels of sodium, water and phenols in the final product. New developments in coalescing technology have made it possible to separate very stable emulsions and dispersions. In the following case history, the Mol-RT's Szazhalombatta Refinery experienced emulsion problems from caustic carryover. Eager to resolve this condition, refinery engineers investigated several technologies to break the emulsion and mitigate the problem. One option considered was a new high-efficiency flu

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