TECHNOLOGY Pilot-plant results in on fixed-bed alkylation process

04/01/1996
A number of catalyst manufacturers and process licensors are working on alternative catalysts for refinery alkylation units. Haldor Topse A/S, Lyngby, Denmark, has come forward as the first such company to release results from pilot plant testing. Haldor Topse's supported-liquid catalyst is designed to replace the liquid acids traditionally used in alkylation units (HF and H2SO4). The fixed-bed process uses a liquid "super acid" supported on a solid support to alkylate isobutane and isopentane with olefins. "As a consequence of the unique interaction between the catalyst and the feed stream," says Topse's Sven Ivar Hommeltoft, "the catalyst in the reaction zone is kept essenti...
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