低结焦渣油催化裂化催化剂的制备及其性能  

Preparation and Property of Low Coke Yield Resid Catalytic Cracking Catalyst

作　　者：张建明[1] 王新平[1] 谢鹏[2] 李铭芝[2] 张今令[2] 杨越[2] 刘中民[2] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116024 [2]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《催化学报》2005年第12期1053-1058,共6页

基　　金：中国石油天然气股份有限公司炼油与销售分公司的资助!

摘　　要：采用联合脱铝法制备了一系列高硅铝比Y型沸石FSY,并对其加La老化的LaFSY催化裂化性能进行了研究.结果表明,(NH4)2SiF6处理和水热处理两个步骤联合可有效调节FSY沸石的酸密度,所得LaFSY沸石具有适量强酸位和较少弱酸位,在保持高微反活性的同时有效地降低了重油结焦率.以大庆常压渣油为裂化原料,与另一种广泛使用的工业催化剂相比,该LaFSY沸石为活性组分的微球催化剂可使轻质产品收率由85.4%提高到88.9%,而结焦率由9.0%下降到7.5%.A series of ultrastable Y zeolite samples （FSY） with high Si/Al ratio were prepared. The acid site amount of FSY samples could be effectively adjusted by dealumination with （NHa）2SiF6 and hydrothermal treatment. Therefore, the FSY sample with a suitable amount of acid sites and definite acidity could be expected. After being modified by lanthanum, the LaFSY zeolite with more strong acid sites and less weak acid sites was obtained, and it showed a high activity and gave a low coke yield in resid fluid catalytic cracking （RFCC）. After being aged in 100 % water vapor at 800 ℃ for 17 h, the catalyst with the LaFSY zeolite as the active component gave a total liquid yield of 88.9 % and coke yield of 7.5 % in the RFCC reaction of Daqing resid. Compared with another generally used industrial catalyst that gave a total liquid yield of 85.4 % and coke yield of 9.0 %, the LaFSY catalyst could be considered as a better catalyst for RFCC.

关 键 词：渣油 催化裂化 超稳Y沸石 结焦率 硅铝比 

分 类 号：O643.36[理学—物理化学]