摘要
发展甲醇制芳烃(MTA)技术符合我国多煤少油的能源结构特点,对实现芳烃生产资源多元化,保障我国能源安全有非常重要的战略意义。综述了MTA反应机理、高芳烃选择性和高稳定性催化剂制备、反应工艺参数影响规律和代表性技术等方面的最新进展。在催化剂研究方面,MTA反应需要同时包含B酸中心和脱氢活性中心的金属改性分子筛催化剂参与,Zn/ZSM-5催化剂是公认的性能优良的MTA催化剂,引入磷或第二金属可以提高Zn/ZSM-5催化剂的水热稳定性。在MTA工艺开发方面,选择合适的转化深度是获得高轻质芳烃(BTX)和高芳烃产率的关键。在代表性技术方面,目前国内有3种MTA技术完成了中试研究,具备了产业化的技术基础。为在未来实现产业化,还需要进一步提升催化剂综合性能,提高产品方案灵活性,以及与其它工业装置实现高效耦合。
The development of methanol to aromatics(MTA) technology conforms to the energy structure characteristics of more coal and less oil in China. It is of great strategic significance for realizing the diversification of aromatics production resources and ensuring domestic energy security. The latest progress in MTA reaction mechanism, preparation of catalysts with high aromatics selectivity and stability, influence rule of reaction process parameters and representative techniques were reviewed. In terms of catalyst research, the MTA reaction requires a metal modified molecular sieve catalyst containing both B acid sites and dehydrogenation active sites. Zn/ZSM-5 catalyst is recognized as an excellent MTA catalyst. The introduction of phosphorus or a second metal can stabilize the hydrothermal stability of Zn/ZSM-5 catalyst. In terms of MTA process development, selecting a suitable conversion depth is the key to obtain high yield of light aromatics(BTX) and aromatic hydrocarbons. In terms of representative techniques, three MTA technologies have completed pilot scale research and have the technical foundation for industrialization at present. In order to realize industrialization in the future, it is necessary to further improve the comprehensive performance of catalysts, enhance the flexibility of product schemes and achieve efficient coupling with other industrial units.
作者
李晓红
周健
吕建刚
齐国祯
杨为民
LI Xiaohong;ZHOU Jian;LV Jiangang;QI Guozhen;YANG Weimin(State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,SINOPEC Shanghai Research Institute of Petrochemical Technology,Shanghai 201208,China)
出处
《低碳化学与化工》
CAS
北大核心
2023年第1期72-79,共8页
Low-Carbon Chemistry and Chemical Engineering
基金
国家重点研发计划(2017YFB0702800)。
关键词
甲醇制芳烃
催化剂
工艺
流化床
methanol to aromatics
catalyst
process
fluidized bed
