催化裂解过程中空速和剂油比对液化气生成的影响  

EFFECT OF CATALYST TO OIL RATIO AND SPACE VELOCITY ON THE FORMATION OF LPG IN DEEP CATALYTIC CRACKING PROCESS

作　　者：沙有鑫[1] 龙军[1] 谢朝钢[1] 李正[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2012年第4期1-4,共4页Petroleum Processing and Petrochemicals

摘　　要：在小型固定流化床装置上,以减压蜡油为原料,采用含Y型分子筛和择形分子筛两种活性组分的催化剂,考察了进料空速和剂油比对液化气产率和组成的影响。结果表明:降低进料空速和增大剂油比都能够提高重油转化率和液化气产率,但两者对液化气组成的影响却截然不同;降低空速导致液化气丙烯含量提高,而增大剂油比却导致液化气丙烯含量降低;降低进料空速有利于催化剂中择形分子筛内的化学反应,增大剂油比则有利于催化剂中Y型分子筛内的化学反应。The effect of catalyst to oil（C/O） ratio and weight hourly space velocity（WHSV） on the yield and compositions of LPG was investigated using a laboratory fixed-fluidized bed（FFB） unit,VGO feedstock,a catalyst containing zeolite Y and shape-selective zeolite.Test results show that with the decrease of WHSV and the increase of C/O ratio,both the LPG yield and heavy oil conversion enhance,but their effects on the compositions of LPG are distinct.With the decrease of WHSV the propylene content of LPG increases;contrarily,with the increase of C/O ratio,the propylene content of LPG decreases,the reason of which is discussed as well.It is found that the decrease of WHSV favors chemical reactions happened in the shape-selective zeolite,and with the increase of C/O ratio,reactions took place in zeolite Y are benefited.

关 键 词：催化裂化 剂油比 空速 液化气 丙烯 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]