Processes for the reduction of alkylation catalyst...

Details Processes for the reduction of alkylation catalyst... Processes for the reduction of alkylation catalyst...

B - Operations, Transporting

01

J

B01J 29/90 (2006.01) C07C 2/66 (2006.01) C07C 15/073 (2006.01)

Patent

CA 2661021

Alkylation systems and methods of minimizing alkylation catalyst regeneration are described herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a preliminary alkylation catalyst disposed therein to form a first output stream. The preliminary alkylation catalyst generally includes a zeolite catalyst having a SiO2/Al2O3 ratio of less than about 25. The alkylation systems further include a first alkylation system adapted to receive the first output stream and contact the first output stream with a first alkylation catalyst disposed therein and an alkylating agent to form a second output stream.

La présente invention concerne des systèmes d'alkylation et des procédés réduisant au minimum la régénération d'un catalyseur d'alkylation. Les systèmes d'alkylation comprennent généralement un système d'alkylation préliminaire adapté pour recevoir un flux d'admission comprenant un hydrocarbure alkyle aromatique et pour mettre en contact le flux d'admission avec un catalyseur d'alkylation préliminaire disposé dedans de façon à former un premier flux de sortie. Le catalyseur d'alkylation préliminaire comprend généralement un catalyseur de type zéolite ayant un rapport SiO2/Al2O3 inférieur à environ 25. Les systèmes d'alkylation comprennent en outre un premier système d'alkylation adapté pour recevoir le premier flux de sortie et pour mettre en contact le premier flux de sortie avec un premier catalyseur d'alkylation disposé dedans et un agent d'alkylation de façon à former un second flux de sortie.

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