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US 11,104,622 B2Granted
Liquid acid catalyzed alkylation process
AssigneeUop LLC
InventorsAlakananda Bhattacharyya, Jeffery C. Bricker, Mark G. Riley, Andrey O. Kuzmin
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Abstract
A process for acid catalyzed alkylation involving the use of surfactants which form bi-continuous micro-emulsions with the liquid acid and the hydrocarbon is described. The bicontinuous phase formed between the hydrocarbon and liquid acid phases at surfactant addition facilitates and improves the liquid acid catalyzed alkylation reactions including motor-fuel alkylation reaction.
Claims20
A process for acid catalyzed alkylation comprising:
- reacting an olefin and an isoparaffin or an aromatic compound in the presence of a liquid acid catalyst and a surfactant in an alkylation reaction zone operating at alkylation reaction conditions to form a reaction mixture comprising an alkylation product, the reaction mixture comprising a Winsor Type III phase system, wherein the surfactant has a solubility at 25° C. of 0.5% or less in the olefin, the isoparaffin, the liquid acid catalyst, and the alkylation product.
A process for sulfuric acid catalyzed alkylation comprising:
- reacting an olefin and an isoparaffin or aromatic compound in the presence of a sulfuric acid catalyst and a surfactant in an alkylation reaction zone operating at alkylation reaction conditions to form a reaction mixture comprising an alkylation product, the reaction mixture comprising a Winsor Type III phase system, wherein the surfactant has a solubility at room temperature of 0.5% or less in the olefin, the isoparaffin or aromatic compound, the sulfuric acid, and the alkylation product, wherein an amount of the surfactant is in a range of 0.010 to 0.25 wt % of an amount of the sulfuric acid, and wherein a molar feed ratio of liquid acid to olefin is in a range of 0.005:1 to 100:1.
Dependencies are inferred from the claim text.