Vapor-phase alkylation in presence of crystalline aluminosilicate catalyst with separate transalkylation

Abstract

Abstract A PROCESS IS PROVIDED FOR ALKYLATION OF AROMATIC HYDROCARBONS BY CONTACTING SAME WITH AN ALKYLATING AGENT IN A REACTION ZONE MAINTAINED UNDER CONDITIONS SUCH THAT SAID ALKYLATION IS ACCOMPLISHED IN THE VAPOR-PHASE AND IN THE PRESENCE OF A CATALYST COMPRISING A CRYSTALLINE ALUMINOSILICATE ZEOLITE CHARACTERIZED BY A UNIQUE X-RAY DIFFRACTION PATTERN, SAID CATALYST UNDER SAID CONDITIONS BEING CAPABLE OF AFFORDING A HIGH AND SELECTIVE YIELD OF DESIRED ALKYLAROMATIC PRODUCT. SAID ALKYLATION PROCESS IS ACCOMPANIED BY A SYSTEM FOR TRANSALKYLATION OF THE POLYALKYLAROMATIC PORTION OF THE EFFLUENT FROM SAID ALKYLATION PROCESS. THERE IS ALSO PROVIDED, WHEN SAID REACTION ZONE IS COMPRISED OF A SERIES OF REACTOR STAGES, A QUENCH FOR EFFLUENT FROM SAID STAGES BETWEEN SAID STAGES. ALSO, A CATALYST STEAM REGENERATION METHOD IS PROVIDED.

Inventors

• 👤 P Keown
• 👤 C Meyers
• 👤 R Wetherold

Bibliographic Details