低碳烃芳构化催化剂再生过程研究  

STUDY ON REGENERATION OF LOWER PARAFFINE AROMATIZATION CATALYSTS

作　　者：朱华青[1] 程昌瑞[1] 谭长瑜[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《燃料化学学报》1997年第6期509-513,共5页Journal of Fuel Chemistry and Technology

摘　　要：由低碳烃转化生成芳烃，高温下伴随裂解聚合生焦反应，催化剂需周期性再生方可保持高的芳烃收率和选择性。本文对ＧａＺＳＭ５低碳烃芳构化结炭催化剂的再生过程进行了研究，考察了载气气流配比、气体空速及烧炭温度对烧炭程度的影响，在此基础上选定了烧炭程序。在１０ｍｌ、１００ｍｌ反应装置上的在位烧炭结果表明，此烧炭程序能使催化剂上所结之炭完全脱出，催化剂活性完全恢复。并建立了宏观再生动力学方程。The regeneration of coked catalysts for propane aromatization has been studied in a 2ml stainless steel tube reactor The effects of O 2 partial pressure (0 48kPa￣22 75kPa) in carrier (N 2), gas hour space velocity (600h 1 ￣2100h 1 ) and reaction temperature (450℃￣550℃) to the extent of combustion were examined Coke combustion programs for catalysts with coke content of 3%￣10%) were determined and a regeneration kinetics equation was established The equation is: dC c/dt=5 93e (45 73×10 3/RT) P O 2 0.92 C c 1.05 Based on the investigation, the regeneration programs were used in 10ml and 100ml reactor systems for the deactivated catalysts from lower paraffin (propane, butane and butene, etc ) aromatization The regeneration resutles for the propane aromatization catalysts, which were on stream for more than 1000 h with a 50 hourcycle, showed that the oxidative regeneration programs were satisfactory

关 键 词：Ga-ZSM-5 再生 分子筛催化剂 低碳烃 芳构化 

分 类 号：TQ426.94[化学工程] O643.362[理学—物理化学]