C9+重芳烃增产BTX技术进展

doi:10.16085/j.issn.1000-6613.2017.04.017

摘要/Abstract

摘要： 随着我国芳烃联合装置及大规模乙烯装置的兴建及扩能改造，副产的C₉⁺重芳烃会越来越多，通过芳烃增产技术将低附加值C₉⁺重芳烃转化为苯、甲苯、二甲苯（BTX）轻质芳烃对于促进企业挖潜增效、拓展芳烃原料来源具有重要意义。本文以重整C₉⁺重芳烃和裂解C₉⁺重芳烃增产BTX为出发点，从反应原理、工艺、催化剂及优缺点等方面对热加氢脱烷基、催化加氢脱烷基、非临氢脱烷基、两段临氢裂解技术进行概述，并对技术的发展趋势进行了展望。指出目前无论是重整C₉⁺重芳烃增产BTX技术，还是裂解C₉⁺重芳烃增产BTX技术均存在许多问题，需要通过从工艺方面或催化剂方面进行创新改进，以提升技术的经济性。催化材料是技术创新发展的关键，未来研发方向应综合反应机理、催化剂失活机理、工艺工程等问题开发高效的新型催化材料，促进C₉⁺重芳烃增产BTX技术的创新发展。

关键词: C₉⁺重芳烃, 生产, 苯, 甲苯, 二甲苯, 催化剂

Abstract: With the newly built aromatic combining plant and large-scale ethylene plants and those with capacity expansion revamping,the C₉⁺ heavy aromatic byproducts yield will greatly increase in the future. The conversion of C₉⁺ heavy aromatics to BTX by aromatics increase technology is of great significance for the enterprises to tap potentials and expand aromatic raw materials. The technologies of increasing BTX from reforming C₉⁺ and pyrolysis C₉⁺ heavy aromatics are reviewed,including reaction principles,processes,catalysts,advantages and disadvantages for themo-hydrodealkylation, hydrodealkylation, non-hydrodealkylation and two-stage hydrocracking technologies. Meanwhile,the prospects and future development of each technology are also presented. The article points out that both the increasing aromatic technology from reforming C₉⁺ and pyrolysis C₉⁺ heavy aromatics still have a lot of problems,and innovation of process and catalyst are needed to improve the technology. Catalytic material is the key of the technology innovation and development,and in the future the reaction mechanism,catalyst deactivation mechanism and process engineering issues should be integrated to develop new efficient catalytic materials,which can promote the innovational development of BTX increase technology from C₉⁺ heavy aromatics.

Key words: C₉⁺ heavy aromatics, production, benzene, toluene, xylene, catalyst

中图分类号:

臧甲忠, 郭春垒, 范景新, 王银斌, 于海斌. C₉⁺重芳烃增产BTX技术进展[J]. 化工进展, 2017, 36(04): 1278-1287.

ZANG Jiazhong, GUO Chunlei, FAN Jingxin, WANG Yinbin, YU Haibin. Advance in BTX production increase technology from C₉⁺ heavy aromatics[J]. Chemical Industry and Engineering Progress, 2017, 36(04): 1278-1287.

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C₉⁺重芳烃增产BTX技术进展

Advance in BTX production increase technology from C₉⁺ heavy aromatics

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