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AssigneeInstitut Francais du Petrole
InventorsJacques Alagy, Jean-Francois Joly, Eric Benazzi, Jean-Charles Viltard, Luis Borges, Alain Forestiere
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The invention concerns a process for the alkylation of at least one isoaffin selected from the group formed by isobutane and isopentane by at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, the process comprising mixing a feed comprising the olefin to be converted with an effluent comprising a major portion of isoparaffin in a first mixing zone, and forming an emulsion of said catalyst in a hydrocarbon effluent comprising a major portion of isoparaffin in an emulsifying zone, said effluent constituting the continuous phase of the emulsion thus formed, then mixing a major portion of the emulsion of acid in hydrocarbon effluent with a major portion of the diluted feed comprising the olefin in a second mixing zone, followed by carrying out the majority of the reaction in a reaction zone which is supplied by the major portion of said mixture.
A process for the alkylation of at least one isoparaffin selected from the group consisting of isobutane and isopentane with at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, said process comprising (1) mixing a feed comprising the olefin to be converted with a first effluent comprising (a) major portion of isoparaffin and (b) a minor portion of alkylate in a first mixing zone so as to obtain a diluted feed, (2) forming an emulsion of said liquid acid catalyst in a second hydrocarbon effluent depleted of said alkylate and comprising a major portion of isoparaffin, said second hydrocarbon effluent constituting the continuous phase of the emulsion thus formed, (3) mixing a major portion of the resultant emulsion of acid in the second hydrocarbon effluent with a major portion of the diluted feed comprising the olefin in a second mixing zone, (4) passing a third effluent from said second mixing zone to a reaction zone, and (5) conducting most of said alkylation reaction in said reaction zone to form said alkylate, wherein the temperature of the second mixing zone is less than the temperature of the reaction zone.
A process for the alkylation of at least one isoparaffin selected from the group consisting of isobutane and isopentane with at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, said process comprising (1) mixing a feed comprising the olefin to be converted with a first effluent comprising (a) a major portion of isoparaffin and (b) a minor portion of alkylate in a first mixing zone so as to obtain a diluted feed, (2) forming an emulsion of said liquid acid catalyst in a second hydrocarbon effluent depleted of said alkylate and comprising a major portion of isoparaffin, said second hydrocarbon effluent constituting the continuous phase of the emulsion thus formed, (3) mixing a major portion of the resultant emulsion of acid in the second hydrocarbon effluent with a major portion of the diluted feed comprising the olefin in a second mixing zone, (4) passing a third effluent from said second mixing zone to a reaction zone, and (5) conducting most of said alkylation reaction in said reaction zone to form said alkylate, wherein the temperature of the second mixing zone is less than the temperature of the reaction zone, and wherein the residence time for compounds within the second mixing zone is between 1 second and two minutes.
A process for the alkylation of at least one isoparaffin selected from the group consisting of isobutane and isopentane with at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, said process comprising (1) mixing a feed comprising the olefin to be converted and at least one isoparaffin with a first effluent comprising (a) a major portion of isoparaffin and (b) a minor portion of alkylate in a first mixing zone so as to obtain a diluted feed, (2) forming an emulsion of said liquid acid catalyst in a second hydrocarbon effluent depleted of said alkylate and comprising a major portion of isoparaffin, said second hydrocarbon effluent constituting the continuous phase of the emulsion thus formed, (3) mixing a major portion of the resultant emulsion of acid in the second hydrocarbon effluent with a major portion of the diluted feed comprising the olefin in a second mixing zones (4) passing a third effluent from said second mixing zone to a reaction zone, and (5) conducting most of said alkylation reaction in said reaction zone to form said alkylate, wherein the temperature of the second mixing zone is less than the temperature of the reaction zone, wherein the temperature of the second mixing zone is below 0.degree. C. and the residence time for compounds within the second mixing zone at a temperature less than 0.degree. C. in between 1 second and two minutes.
A process for the alkylation of at least one isoparaffin selected from the group consisting of isobutane and isopentane with at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, said process comprising (1) mixing a feed comprising the olefin to be converted and at least one isoparaffin with a first effluent comprising (a) a major portion of isoparaffin and (b) a minor portion of alkylate in a first mixing zone so as to obtain a diluted feed, (2) forming an emulsion of said liquid acid catalyst in a second hydrocarbon effluent depleted of said alkylate and comprising a major portion of isoparaffin, said second hydrocarbon effluent constituting the continuous phase of the emulsion thus formed, (3) mixing a major portion of the resultant emulsion of acid in the second hydrocarbon effluent with a major portion of the diluted feed comprising the olefin in a second mixing zone, (4) passing a third effluent from said second mixing zone to a reaction zone, and (5) conducting most of said alkylation reaction in said reaction zone to form said alkylate, wherein the temperature of the second mixing zone is less than the temperature of the reaction zone.
Dependencies are inferred from the claim text.