摘要
本项研究提供了一种催化裂化汽油醚化改质,提高其辛烷值的新方法,使催化裂化汽油中的C_4-C_7叔碳烯烃在树脂型催化剂作用下与甲醇反应,生成对应的甲基叔烷基醚,可以有效地提高汽油辛烷值.试验表明在温度为60-80℃、压力为0.7-1.0MPa、空速(V)为3-5h^(-1)、汽油/甲醇为16-25条件下,汽油中的醚含量在3m%以上,汽油RON可提高1.5-2.0单位.如初馏点-100℃的催化裂化轻汽油进行醚化,然后再与未经醚化的重汽油调合,调合汽油平均含醚3-4m%,汽油RON提高3.1个单位,并能延长催化剂使用寿命.
The etherification of FCC gasoline was studied. The octane number of FCC gasoline can be effectively enhanced by reacting methanol with i-C_4-7~= in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst. The results showed that under reaction conditions: t=60-80℃, P=0.8-1.OMPa,LHSV-6-5h^(-1), oil/methanol=16-25 (V), the ether content in the etherified gasoline is higher than 3%(wt) and the RON is increased byl.5-2.0 units. When the IBP-100℃ light FCC gasoline is etherified with methanol and then blended with the remaining heavy FCC gasoline. the RON is increased by 3.1 units while the life of catalyst is extended.
出处
《石油炼制》
CSCD
1989年第11期19-24,共6页
