MCM-41/Y介孔-微孔复合分子筛的合成及其加氢裂化性能研究  

Synthesis of MCM-41/Y meso-microporous composite molecular sieve and study on its hydrocracking performances

作　　者：王东青[1] 孙发民[1] 贾鹏飞[1] 王锐[1] 

机构地区：[1]中国石油天然气股份有限公司大庆化工研究中心,黑龙江省大庆市163714

出　　处：《炼油技术与工程》2013年第6期45-48,共4页Petroleum Refinery Engineering

基　　金：中国石油天然气股份有限公司应用开发项目(2008A-3801-04)

摘　　要：以Y分子筛、水玻璃和硫酸铝为原料,采用二元混合表面活性剂,水热晶化合成了MCM-41/Y介孔-微孔复合分子筛,并用XRD,SEM,TEM,N2吸附-脱附和Py-IR等多种分析手段对其进行了分析表征。同时以MCM-41/Y复合分子筛和无定形硅铝为酸性组分,以W-Ni为活性金属组分,制备了加氢裂化催化剂MYC,并在200 mL加氢评价装置上进行了加氢性能评价。结果表明,MCM-41/Y复合分子筛中存在着复合的MCM-41六方介孔相和Y微孔相;加氢裂化催化剂MYC催化活性较好,在反应压力15 MPa、氢油体积比1 500∶1、体积空速1.5 h-1的条件下,中油选择性为74.82%,C5+液体收率为98.56%,65～165℃重石脑油的芳潜为43.6%,165～370℃柴油的十六烷值为62.2,大于370℃尾油BMCI值为7.1,分别可作为优质的重整装置进料、柴油调合组分及乙烯裂解原料。MCM41/Y meso-microporous composite molecular sieve was synthesized hydrothermally by using Y microporous zeolite, water glass and aluminum sulfate with two mixed surfactants as templates. Its framework, appearance, structure and acidity were investigated by XRD, SEM, TEM, N2 adsorption-desorption and Py-IR. MYC hydrocracking catalyst was prepared with MCM-41/Y composite molecular sieve and amorphous silica-alumina as main acid components and with W-Ni combination as active metal components. Its performances were evaluated on a 200 mL hydrocracking apparatus. The results show that MCM41/Y contains composite hexa- gonal mesoporous structure of MCM41 and mieroporous structure of Y. MYC hydrocracking catalyst has a higher catalytic activity. Under the conditions of 15 MPa reactor pressure, 1 500：1 hydrogen to oil ratio, 1.5 h-1 volumet- ric space velocity, the selectivity of middle distillate is 74.82% ,C5＋ liquid yield is 98.56% ,the aromatics in 65 165 ℃ heavy naphtha is 43.6%, the cetane number of 165 - 370℃ diesel is 62.2 and BMCI value of tail oil higher than 370 ℃ is 7.1. It can be used as CCR feedstock, diesel blending component and feed for ethylene cracker.

关 键 词：MCM-41 Y介孔-微孔复合分子筛 表征 加氢裂化催化剂 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]