Abstract
The process of mercaptans removal from fluid catalytic cracked (FCC) gasoline by NaOH aqueous in a hollow fiber contactor was studied. The results showed that fractional removal of mercaptans was greater in a hydrophobic membrane than that in a hydrophilic membrane at the same condition. The mass transfer coefficient of mercaptans increased significantly while the gasoline flow rate increased because the predominant resistance lies in the gasoline boundary layer. HA-18 modified the solubility of mercaptans in caustic solution and enhanced mercaptans extraction from gasoline. The membrane module should be cleaned by a prolonged operation to recover the membrane property due to membrane fouling.
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