Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Patent
1993-06-25
1994-09-13
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
422190, 422213, 422223, 422235, B01J 808
Patent
active
053466764
ABSTRACT:
Paraffin alkylation using solid, particulate catalyst is carried out by preparing an alkane-catalyst mixture in a wash zone, passing the alkane-catalyst mixture to a plug flow reactor where a minor amount of olefin is introduced to contact the alkane-catalyst mixture and react to form alkylate and the alkane-catalyst-alkylate mixture is passed through the reactor with a minimum of back mixing to restrict the reaction of alkylate with olefin, thus substantially preventing polymerization. The alkane-catalyst-alkylate mixture, substantially free of olefin is passed to a disengaging zone where the liquid is removed and the solid particulate catalyst is recovered and returned to the wash zone for recycle. The alkane is present in the reactor in sufficient molar excess to react substantially all of the olefin. Any unreacted isoalkane is recycled to the reactor with make-up isoalkane added to maintain the molar excess. The preferred catalyst is an acid washed silica treated with antimony pentafluoride and more preferably treated with alkane at low temperature, e.g. -30.degree. to -160.degree. C.
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Huang, T. J., and Yurchaka, S., "Isoparaffin/Olefin Alkylation over Resin/Boron Triflouride Catalysts", Smyposium on Recent Advances in Alkylation Presented Before the Division of Petroleum Chemistry, Inc. American Chemical Society New Orleans Meeting, Mar. 20-25, 1977, pp. 359-367.
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Crossland Clifford S.
Johnson Alan
Pitt Elliot G.
Woods John
Johnson Kenneth H.
Thornton Krisanne M.
Warden Robert J.
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