反应温度对C4烃芳构化反应的影响

以C4烃为原料,在500 mL固定床芳构化实验室反应装置上,利用催化剂SHY-DL,考察了反应温度对芳构化产物收率及分布情况的影响。结果表明,随着反应温度的升高,副产物干气的收率逐渐增大,液化石油气(LPG)的收率变化不大,目的产物汽油的收率逐渐减小,柴油收率则逐渐增大;汽油中异构烷烃、正构烷烃和烯烃的质量分数逐渐减小,而芳烃的质量分数则逐渐增大,表明温度升高有利于芳构化反应的进行。C4烃芳构化适宜反应温度为380～420℃,所得汽油产物的收率大于40%,其辛烷值大于100,LPG中的丙烷质量分数约为50%。

Effect of reaction temperature on C4 hydrocarbon aromatization

The effect of reaction temperature on the yield and distribution of aromatization products were investigated in a 500 mL fixedbed aromatiza- tion lab unit with C4 hydrocarbon as feedstock on the catalyst SHY -DL. The results showed that with the rise of reaction temperature,the yield of dry gas increased,liquid petroleum gas（LPG） had no obvious change, the purpose product gasoline decreased and diesel increased. The yield of isoparaffin, n - alkane and olefin in gasoline decreased, but the aromatic hydrocarbon increased, indicating the increase of reaction temperature was favorable to aromatization process. The suitable reaction temperature for C4 hydrocarbon aromatization ranged from 380 ℃ to 420 ℃. In this range of temperature, the yield of gasoline was more than 40% ,the octane number was more than 100,and the mass fraction of propane in LPG was about 50%