在镧改性HZSM-5分子筛上甲醇对噻吩转化反应的影响  

INFLUENCE OF METHANOL ON THE CONVERSION OF THIOPHENE OVER LANTHANUM MODIFIED HZSM-5 ZEOLITE

作　　者：潘鹏[1] 贾兵营 罗立文[3] 夏道宏[3] 

机构地区：[1]中国石化工程公司,北京100101 [2]山东维坊东明消防器材有限公司 [3]中国石油大学化学化工学院重质油国家重点实验室

出　　处：《石油炼制与化工》2005年第11期16-20,共5页Petroleum Processing and Petrochemicals

基　　金：重质油国家重点实验室开放课题(No.E0304072);教育部优秀青年教师资助计划项目(No.20011863)。

摘　　要：探讨了在HZSM5(硅铝摩尔比为25)分子筛催化剂上,甲醇对噻吩在固定床微型反应器中的催化脱硫转化反应规律的影响。结果表明,反应温度只有在350℃以上时,噻吩才有较大的转化率;适宜量的甲醇对噻吩的催化转化有较大的促进作用;在甲醇与溶剂苯的体积比为0.5,质量空速为14h-1,反应温度为350℃,剂油比为0.5时,对于1.0%LaHZSM5分子筛催化剂,噻吩的转化率和硫化氢的产率分别达到了51.3%、18.1%,比未加甲醇时分别提高了19.8和10.0个百分点;在相同的反应条件下,对于HZSM5分子筛催化剂,噻吩的转化率和硫化氢的产率分别达到了15.3%、6.2%,比未加甲醇时分别提高了1.1和4.0个百分点。The catalytic desulfurization of model organic compound, thiophene, over HZSM-5 （silica to alumina ratio of 25） was studied by a fixed bed micro-reactor in the presence of hydrogen donor, methanol. The experimental results showed that the conversion of thiophene took place at the temperature of 350℃ or higher; the presence of an appropriate amount of methanol increased the conversion of thiophene. Under the optimum conditions of a volume ratio of methanol to solvent benzene of 0. 5, a MHSV of 14 h 1 , a reaction temperature of 350℃ and a catalyst to oil ratio of 0. 5, using 1.0% La-HZSM-5 catalyst the thiophene conversion and hydrogen sulfide yield were 51.3% and 18. 1 respectively, as compared with the absence of methanol they were 19.8 and 10.0 percentages higher, respectively. When HZSM-5 zeolite catalyst was applied in the experiment at the above conditions, the thiophene conversion and hydrogen sulfide yield were 15.3% and 6.2% respectively; as compared with the absence of methanol they were 1.1 and 4.0 percentages higher, respectively.

关 键 词：甲醇 噻吩 分子筛 脱硫 

分 类 号：TE621[石油与天然气工程—油气加工工程] O643.32[理学—物理化学]