Patent
Alkylation process with recovery and regeneration of fluorosulfuric acid catalyst
Paul T Parker,Ivan Mayer +1 more
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TLDR
In this paper, an improved alkylation process is described, which involves an olefin and a paraffin with a catalytic catalyst comprising fluorosulfuric acid.Abstract:
The present invention provides an improved alkylation process comprising: contacting an olefin and a paraffin with an alkylation catalyst comprising fluorosulfuric acid, at alkylation conditions, in an alkylation reactor, thereby forming a hydrocarbon phase comprising alkylate reactor product and containing at least a portion of the catalyst; washing the hydrocarbon phase with an acid comprising sulfuric acid to form an acid phase containing fluorosulfuric acid, hydrofluoric acid, and sulfuric acid; contacting the acid phase with water thereby converting at least a portion of the fluorosulfuric acid to hydrogen fluoride and sulfuric acid; removing at least a portion of the hydrogen fluoride from the acid phase by contacting the same with a paraffin such as n-butane thereby forming a hydrocarbon phase containing hydrogen fluoride; treating the hydrocarbon phase with sulfur trioxide to regenerate the fluorosulfuric acid; and recycling at least a portion of the regenerated fluorosulfuric acid to the alkylation zone to be used as an alkylation catalyst therein.read more
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Patent
Alkylation catalyst regeneration
TL;DR: In this article, a process for regenerating an ASO contaminated alkylation catalyst which contains a sulfone component and a hydrogen halide component is described, where a series of separation steps are performed to remove a significant portion of the hydrogen-halide component contained therein.
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Paul T Parker,Ivan Mayer +1 more
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Alkylation fluosulfonic-sulfuric acid catalyst recovery process with silica-alumina removal of fluoride compounds
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Alkylation process for production of motor fuels
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