催化汽油和C_4烃类在LBO-A催化剂上芳构化反应的实验研究

Laboratory studies on aromatization of gasoline and C_4 hydrocarbons on LBO-A catalyst

在小型固定流化床实验装置上,单独利用催化裂化提高辛烷值助剂LBO A为催化剂,分别对催化汽油和C4烃类进行了催化转化反应的实验研究,考察了反应温度和空速对反应产物分布和组成的影响。实验结果表明,LBO A单独作为催化剂对催化汽油和C4烃类具有较强的芳构化性能,同时,所产裂化气体中,丙烯含量远高于普通裂化催化剂。因此,在适宜的反应条件下,可生产高辛烷值的汽油组分,同时,增产丙烯,并且这两种性能随反应温度的升高而增强。

Catalytic aromatization of FCC (Fluid Catalytic Cracking) gasoline and C_4 hydrocarbons on LBO-A catalyst, a RON-enhancing additive for conventional FCC catalysts, were studied in a small fixed-fluidized bed reactor, using gasoline and C_4 hydrocarbons as the feed, respectively. Influences of reaction temperature and space velocity on distribution and composition of the products were investigated. The experimental results showed that LBO-A, solely as the catalyst, has relatively strong aromatization activity for aromatization of gasoline and C_4 hydrocarbons, with higher propylene content in the LPG (liquefied petroleum gas) than conventional FCC catalysts. Production of high-RON gasoline and increasing yield of propylene can be realized over LBO-A catalyst under appropriate reaction condition. The activity for production of high-RON gasoline and increasing yield of propylene increases with temperature.