摘要
考察了反应温度、空速和高径比条件对轻烃在分子筛催化剂上低温芳构化制取高辛烷值汽油性能的影响。结果表明,反应温度和空速对催化剂的催化性能有明显影响,提高反应温度有利于提高芳烃收率,增加进料空速,催化剂芳构化性能下降,芳烃二次反应也减少。在450℃、1.0 h-1和高径比为6.0的条件下,此轻烃在ZSM-5催化剂作用下,可得到高辛烷值汽油,其初馏点为49℃,干点为203℃,烯烃质量分数为13.42%,芳烃质量分数为84.24%,辛烷值为101,可作汽油调和组分,也可直接作汽油使用。
Effects of reaction temperature, space velocity and L/D of the reactor on low temperature aromatization of light hydrocarbon to high octane gasoline over ZSM-5 zeolite catalyst were investigated. The experimental results showed that reaction temperature and space velocity had remarkable influence on aromatization of light hydrocarbons. Aromatics yield increased with reaction temperature. Aromatics yield declined from 71.4% to 50.1% when space velocity was raised from 0.5 h^-1 to 2.0 h^- 1, and secondary reactions of aromatics decreased, too. High octane gasoline was ohtained from light hydrocarbon over ZSM-5 zeolite catalyst under 450 ℃ and 1.0 h^-1, with IBP of 49 12, FBP of 203 12, olefin content of 13.42%, and aromatics content of 84.24%.
出处
《工业催化》
CAS
2006年第2期5-8,共4页
Industrial Catalysis
基金
中国石化集团公司资助项目(2991130785)
关键词
轻烃
芳构化
汽油
ZSM-5分子筛
light hydrocarbon
aromatization
high octane gasoline
ZSM-5 zeolite catalyst
