ZRP-Y型分子筛催化剂混合体系的重油裂化性能.pdfVIP

石油学报(石油加工) 2008年4月 ACTA PETROLEI SINICA(PETROI EUM PROCESSING SECTION) 第24卷第2期 文章编号：1001—8719(2008)02—0128—06 ZRP—Y型分子筛催化剂混合体系 的重油裂化性能 郭湘波，龙 军，侯拴弟，何 峻 (中国石化 石油化工科学研究院，北京 100083) 摘要：在小型固定流化床装置中，采用 ZRP和 REUSY复配催化剂，进行重油的催化裂化反应，考察 ZRP加入量 对裂化性能的影响。结果表明，少量 ZRP的加入能显著地降低重油裂化产物汽油馏分产率，并提高液化气馏分产 率；当REUSY中ZRP添加量超过3O 后，汽油馏分和液化气馏分产率变化趋缓。PONA数据表明，汽油馏分产 率的降低主要是由于其中异构烷烃和烯烃产率显著降低造成的，而液化气馏分中烯烃产率增加则是液化气馏分产 率增加的主要原因。在 REUSY中ZRP的添加量超过3O 后，混合催化剂体系的裂化活性和氢转移反应的选择性 明显减弱。 关 键 词：催化裂化；ZRP；REUSY；混合 中图分类号：TE624．41 文献标识码：A CRACKING PERFoRMANCE oF ZRP—Y CATALYST BLENDING SYSTEM FoR HEAVY oIL GUO Xiang_bo，LONG Jun，HOU Shuan—di，HE Jun (Research Institute of Petroleum Processing，SINOPEC，Beijing 100083，China) Abstract：The catalytic cracking reaction of heavy oil was carried out in a fixed bed reactor， catalyzed by the compound catalyst of REUSY and ZRP。The effects of ZRP addition in REUSY catalyst on the cracking performance for heavy oil were studied。The results showed that a small quantity of ZRP addition in REUSY catalyst could result in a lower production of gasoline and higher production of LPG in the catalytic cracking reaction of heavy oil。These change trends would be weakened when ZRP addition in REUSY catalyst exceed by 30 。PONA data indicated that the loss of gasoline yield in the reaction system occurred primarily due to the decrease of i-paraffin and olefin yields。The increase of LPG yield occurred mainly due to the significant increase of olefin yield。The cracking activity and the selectivity of hydrogen—transfer reaction for the heavy oil catalytic cracking obviously reduced when ZRP addition exceed 30 in REUSY catalyst。 Ke