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AssigneeCatalytic Distillation Technologies
InventorsLawrence A. Smith JR., Mitchell E. Loescher, John R. Adams, Abraham P. Gelbein
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A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a disperser mesh under conditions of temperature and pressure to react said isoparaffin and said olefin to produce an alkylate product is disclosed. Preferably, the liquid system is maintained at about its boiling point in the reaction zone. Unexpectedly, the olefin oligomers have been found to function as olefin precursors and not as olefins in the reaction. Thus, for example, a cold acid alkylation using an oligomer of isobutene (principally dimer and trimer) with isobutane produces isooctane with the isobutane reacting with the constituent isobutene units of the oligomers on a molar basis. The product isooctane is essentially the same as that produced in the conventional cold acid process.
A paraffin alkylation process comprising contacting alkane and olefin in concurrent flow in the presence of an acid catalyst into contact with a disperser under conditions of temperature and pressure to react said alkane and said olefin to produce alkylate product.
An isoparaffin alkylation process comprising contacting a system comprising acid, isoalkane and olefin in concurrent downflow under conditions of temperature and pressure to maintain said liquid system at about its boiling point through a reaction zone packed with contacting internals.
A paraffin alkylation process comprising contacting an oligomer comprising at least two constituent olefins with an isoalkane in the presence of an acid alkylation catalyst under alkylation conditions and recovering a product comprising an alkylate corresponding to the alkylation product of said isoalkane and said constituent olefins.
An integrated process for the production of alkylate comprising contacting a stream comprising normal and tertiary olefins with an acid cation resin catalyst under oligomerization conditions to preferentially react a portion of the tertiary olefins with themselves to form oligomers and feeding said oligomers and isoalkane to an alkylation zone under alkylation conditions in the presence of an acid alkylation catalyst to produce an alkylation product comprising the alkylate of said tertiary olefins and said isoalkane.
A process for the production of alkylate comprising the steps of reacting olefins with themselves to form oligomers and contacting the oligomerization product with an alkane in the presence of an alkylation catalyst to produce alkylate.
A process for the production of alkylate comprising the steps of reacting C2 to C16 tertiary olefins with themselves to form oligomers and contacting the oligomerization product with isoalkane in the presence of an acid alkylation catalyst to form alkylate.
Dependencies are inferred from the claim text.