Solid catalyst alkylation process with regeneration section...

C - Chemistry – Metallurgy – 07 – C

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C07C 2/58 (2006.01) B01J 27/32 (2006.01) B01J 38/10 (2006.01)

Patent

CA 2476632

An alkylating agent alkylates an alkylation substrate in a solid catalyst alkylation process in which an alkylation reactor produces a reaction effluent and a catalyst regeneration zone produces a hydrogen-containing regeneration effluent. The alkylation effluent passes to an alkylate fractionation zone, while the regeneration effluent passes to a hydrogen fractionation zone to remove hydrogen and produce a hydrogen-depleted stream that passes to the alkylate fractionation zone. The process recycles hydrogen, and can recycle halogen-containing species as well, within the process while preventing admixture of hydrogen with the alkylating agent. This invention is particularly applicable to alkylation processes that use an olefinic alkylating agent.

Un agent d'alcoylation alkyle un substrat d'alcoylation dans un procédé d'alcoylation à catalyseur solide. Selon ce procédé, un réacteur d'alcoylation produit un effluent de réaction et une zone de régénération de catalyseur produit un effluent de régénération contenant de l'hydrogène. L'effluent d'alcoylation arrive à une zone de fractionnement d'alkylat, tandis que l'effluent de régénération arrive à une zone de fractionnement d'hydrogène permettant le retrait de l'hydrogène, ce qui donne un flux dépourvu d'hydrogène qui arrive à la zone de fractionnement de l'alkylat. Ce procédé recycle l'hydrogène et peut recycler les espèces halogénées. Il permet également pendant toute sa durée d'empêcher le mélange de l'hydrogène et de l'agent d'alcoylation. L'invention est particulièrement applicable aux procédés d'alcoylation qui utilisent un agent d'alcoylation oléfinique.

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