利用流化催化裂化汽油生产低碳烯烃联产高辛烷值汽油

用流化催化裂化汽油生产低碳烯烃联产高辛烷值汽油可以在相对较温和的条件下进行。该方法可大幅度地提高丙烯、乙烯质量比,并在汽油烯烃含量降低的同时,提高汽油的辛烷值。以抚顺二厂流化催化裂化汽油为原料,在固定床微型反应装置上考察了反应条件和催化剂对反应的影响。结果表明,温度、油气与催化剂的接触时间及有无水蒸气参与都对乙烯、丙烯的生成有显著的影响。在适宜的反应条件下,使用适宜的催化剂能使乙烯加丙烯收率达到36%左右,并且H2+CH4+C2H6和焦炭的收率都很低。在烯烃含量降到10%左右时,汽油的研究法辛烷值和马达法辛烷值分别升高约5个百分点。

Conversion of fluid catalytic cracking gasoline to light olefins and high octane number gasoline

The conversion of fluid catalytic cracking (FCC) gasoline to light olefins and high octane number gasoline was investigated on a fixed-bed micro-reactor. The results show that reaction temperature, contacting time of oil with catalysts, water-oil ratio all affect the production of etpercenhylene and propylene obviously. Under appropriate reaction conditions and using proper catalyst, the total yield of ethylene and propylene reaches 36%, and the total yield of H_2, CH_4 and C_2H_6 as well as the yield of coke is very low. The octane numbers from the Research method and the Motor method increase by about 5 percent respectively, when the olefin content of the remaining gasoline is only about 10 percent.