公开(公告)号：US12071387B2

公开(公告)日：2024-08-27

申请号：US18211391

申请日：2023-06-19

Applicant: TIANJIN UNIVERSITY

Inventor： Minhua Zhang ,  Hao Gong ,  He Dong ,  Feng Shi ,  Fang Meng ,  Yingzhe Yu ,  Haoxi Jiang

IPC: C07C1/24 ,  C07C7/04 ,  C07C7/12 ,  C09K5/04

CPC classification number: C07C1/24 ,  C07C7/04 ,  C09K5/042 ,  C07C7/12 ,  C09K2205/12

Abstract: The present disclosure relates to a thermal coupling method for preparing ethylene by ethanol dehydration and device thereof. The device includes an ethanol dehydration reaction system, a quenching compression system, an alkaline washing system, a molecular sieve drying system and an ethylene purification and propylene refrigeration cycle system; ethanol dehydration reaction products in the ethanol dehydration reaction system serve as a heat source for preheating, vaporization and superheating of a raw material of ethanol; tower bottoms of an evaporation tower in the quenching compression system serve as a heat source for preheating of a feed stream of the evaporation tower and heating of an overhead gas of a quenching tower; products of ethylene in the alkaline washing system serve as a cold source for cooling of crude ethylene.