Beta和Y型分子筛催化四氢萘裂化规律的对比  

Comparison of the Catalytic Cracking of Tetralin Over Beta and Y Zeolite

作　　者：陈妍[1] 宋海涛[1] 朱玉霞[1] 达志坚[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2015年第3期650-656,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2006CB202501)基金资助

摘　　要：以四氢萘为探针分子,采用纯烃固定床微反装置,对比研究了Beta和Y型（以DASY（0.0）为例）2种分子筛催化芳香基环烷环烃类的裂化转化规律,采用PONA分析和GC-MS检测产物组成。结果表明,Beta分子筛对四氢萘裂化转化的催化活性低于DASY（0.0）,但DASY（0.0）催化下四氢萘芳构化形成萘的选择性较高（可达到约45%）,而Beta分子筛催化下四氢萘的开环裂化（ROP）选择性较高,芳构化生成萘的选择性仅为DASY（0.0）的1/3,且Beta分子筛催化下C3~C4低碳烃选择性及C3~C4低碳烃中的烯烃比例明显较高。Catalytic cracking of tetralin was carried out over Beta and DASY（0.0） zeolites in a fixed-bed micro-reactor, to discuss the cracking of aromatic-naphthene ring catalyzed by the two zeolites, the product distributions were analyzed in detail by PONA and gas chromatography-mass spectrometry techniques. It is shown that compared with DASY（0.0） zeolite, over Beta zeolite the hydrogen transfer （HT） activity of tetralin was lower, as the selectivity of naphthalene just 1/3 of that over DASY（0.0）, and the selectivity of products produced by ring-open reactions （ROP） was larger, though the tetralin conversion was smaller, on the other hands, the C3--C4 selectivity and the portion of olefins in Ca--C4 were higher.

关 键 词：催化裂化 Beta分子筛 Y型分子筛 四氢萘 芳香基环烷环 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]