磷改性HZSM-5催化剂甲醇芳构化反应条件研究  

Study on reaction conditions for methanol to aromatics over HZSM-5 catalyst modified with phosphorus

作　　者：季洪强[1] 张强[1] 杨杰[1] 山红红[1] 李春义[1] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛266580

出　　处：《石化技术与应用》2014年第5期385-389,共5页Petrochemical Technology & Application

基　　金：青岛市民生科技计划(项目名称:炼油厂催化装置烟气脱硫技术;项目编号:13-1-3-126-nsh)

摘　　要：在固定床微反装置上,考察了高岭土、HZSM-5催化剂和磷(P)改性HZSM-5催化剂的甲醇反应性能,并研究了反应温度和空速(改变进料量或催化剂装填量)对P改性HZSM-5催化剂甲醇芳构化(MTA)反应的影响。结果表明,P改性HZSM-5催化剂表现出更高的芳烃收率和烯烃收率。就P改性HZSM-5催化剂的MTA反应而言,高温有利于汽油中芳烃选择性的增加,但汽油收率降低,芳烃总收率则基本保持恒定,适宜的反应温度为400℃;空速增大,甲醇反应的中间产物与催化剂接触机会减少,反应深度受到抑制,汽油和芳烃收率均降低。The reaction performance of methanol was investigated in a fixed bed reactor over kaolin,HZSM-5 catalyst,and HZSM-5 catalyst modified with P,respectively.The effect of reaction temperature and space velocity （varying feeding quantity or catalyst loadings） on the methanol to aromatics （MTA） over HZSM-5 catalyst modified with P was studied.The results showed that HZSM-5 catalyst modified with P presented higher aromatic yield and olefin yield.In MTA reaction over HZSM-5 catalyst modified with P,higher temperature was favourable to the increase of the selectivity towards aromatics in gasoline.However,with increasing temperature the yield of gasoline tended to decrease and the yield of aromatics had little change,and the optimum reaction temperature was 400 ℃.With the increase of space velocity,the contact opportunity between intermediates and catalysts in the methanol reaction tended to decline.Moreover,the deep reaction of methanol was prohibited,so that the yields of gasoline and aromatics decreased.

关 键 词：甲醇芳构化 HZSM-5催化剂 高岭土 磷改性 反应温度 空速 芳烃收率 

分 类 号：TE624.48[石油与天然气工程—油气加工工程]