DMTO催化剂的空气再生动力学研究  

Study on air regeneration dynamics of DMTO catalyst

作　　者：徐星 赵银峰[1] 叶茂[1] 刘中民[1] Xu Xing;Zhao Yinfeng;Ye Mao;Liu Zhongmin(Methanol to Olefins National Engineering Laboratory,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《工业催化》2018年第7期54-59,共6页Industrial Catalysis

摘　　要：研究DMTO催化剂在工业条件下的再生动力学对于DMTO工业装置的稳定运行具有重要意义。目前的研究主要集中在根据工业再生器运行数据进行拟合,得到的再生动力学适用温度范围窄。利用热重分析仪,采用等温和非等温方法对DMTO工业流化床反应器中积炭催化剂进行空气再生实验研究。结果表明,积炭DMTO催化剂空气再生反应速率对催化剂积炭含量表现为一级反应。两种方法得到的空气再生活化能几乎相同,约为85 k J·mol-1。表明积炭DMTO催化剂再生过程中积炭物种具有相同性质,实验方法对再生活化能影响很小。Regeneration dynamics of DMTO catalyst under industrial conditions play important role in stable operation of industrial plant. Present studies focus on fitting of industrial regenerator data, and resulted dynamics working temperature is narrow. Air regeneration of spent DMTO catalyst in industrial fluidized bed reactor was canied out in thermogravimetric analyzer. Both isothermal and non-isothermal methods were used, and results showed that coke combustion was first order reaction of coke content in catalyst. Activation energy obtained by these two methods was almost same 85 kJ · mol^- 1, which suggests that both i-sothermal and non-isothermal methods could be used to derive regeneration kinetics for spent MTO catalyst.

关 键 词：催化剂工程 失活催化剂 DMTO催化剂 等温方法 非等温方法 再生动力学 

分 类 号：O643.36[理学—物理化学] TQ426.94[理学—化学]