Isoparaffin-olefin alkylation with a supported hf antimony pentafluoride catalyst

Claim 2

A PROCESS FOR ALKYLATING OLEFINS WITH ISOPARAFINS WHICH COMPRISES FEEDING A NET FEED OF A C2-C5 OLEFIN OR MIXTURES THEREOF AND A C4-C7 ISOPARAFFIN OR MIXTURES THEREOF TO AN ALKYLATION REACTION ZONE, THEREIN CONTACTING SAID FEED WITH CATALYST COMPRISING HF ANTIMONY PENTAFLUORIDE SUPPORTED ON A SOLID FLUORIDED ALUMINA BASE UNDER REACTION CONDITIONS INCLUDING A TEMPERATURE BETWEEN 10*F AND 60*F, AN OLEFIN LHSV THROUGH THE REACTION ZONE OF BETWEEN 0.25 AND 0.9, AN OLEFIN CONTENT IN SAID OLEFIN-ISOPARAFFIN NET FEED OF BETWEEN 1 AND 15 VOLUME PERCENT, WITHDRAWING REACTION ZONE EFFLUENT MIX FROM SAID REACTION ZONE, AND RECYCLING A PORTION OF SAID REACTION ZONE EFFLUENT MIX AMOUNTING TO AT LEAST 2 PARTS OF SAID MIX PER PART OF THE OLEFIN-ISOPARAFFIN NET FEED.

Claim 3

A process in accordance with claim 1 wherein said olefin-isoparaffin net feed is passed through said reaction zone at an LHSV between 6 and 30.

Claim 4

A process in accordance with claim 1 wherein said temperature in said reaction zone is between 25*F and 45*F.

Claim 5

A process in accordance with claim 1 wherein said olefin content in said olefin-isoparaffin net feed is between 4 and 10 volume percent.

Claim 6

A process in accordance with claim 1 wherein said fluorided alumina base has a fluorine content of at least 62 weight percent.

Claim 7

A process for alkylating olefins with isoparaffins which comprises feeding a net feed of a C2-C5 olefin or mixtures thereof and a C4-C7 isoparaffin or mixtures thereof to an alkylation reaction zone, therein contacting said feed with a catalyst comprising HF.antimony pentafluoride supported on a fluorided alumina base having a fluoride content of at least 62 weight percent, said contacting being carried out under reaction conditions including a temperature between 20*F and 45*F, an olefin LHSV through the reaction zone of between 0.25 and 0.9, an olefin-isoparaffin net feed through said reaction zone at an LHSV between 6 and 30, an olefin content in said olefin-isoparaffin net feed of between 4 and 10 volume percent, withdrawing reaction zone effluent mix from said reaction zone, and recycling a portion of the reaction zone effluent mix amounting to at least 2 parts of said mix per said part of olefin-isoparaffin net feed.

Claim 8

A process for alkylating olefins with isoparaffins which comprises feeding a net feed of a C2-C5 olefin or mixtures thereof and a C4-C7 isoparaffin or mixtures thereof to an alkylation reaction zone, therein contacting said feed with a catalyst comprising HF.antimony pentafluoride supported on a fluorided alumina base having a fluoride content of at least 62 weight percent, said contacting being carried out under reaction conditions including a temperature between 20*F and 45*F, an olefin LHSV through the reaction zone of between 0.25 and 0.9, an olefin-isoparaffin net feed through said reaction zone at an LHSV between 6 and 30, an olefin content in said olefin-isoparaffin net feed of between 4 and 10 volume percent, withdrawing reaction zone effluent mix from said reaction zone, and recycling a portion of the reaction zone effluent mix amounting to at least 2 parts of said mix per said part of olefin-isoparaffin net feed.