直接生产清洁汽油的FDFCC工艺

FDFCC Process of Directly Producing Clean Gasoline

FDFCC是理想的降低FCC汽油烯烃和硫含量的工艺技术。中试及工业应用结果表明:FDFCC装置操作稳定可靠、工艺参数调节灵活。汽油提升管反应器对催化汽油的改质效果十分显著,改质汽油烯烃含量可下降至18%(φ)以下,芳烃增加13个百分点以上,硫含量下降20%～30%,改质汽油诱导期>1000min,MON和RON不下降,苯含量<1%。采用适当的FDFCC工艺形式,可直接生产满足国内清洁燃料或欧洲Ⅲ类燃料标准的清洁汽油。

The technical features of flexible dual-riser fluid catalytic cracking(FDFCC)process are presented for refineries to choose an efficient technology for directly producing clean gasoline from FCC naphtha.With the application of this new technology,olefin content in GCC naphtha can be reduced to less than 18%,while aromatics content can be increased by more than 13 percentages and sulfur content decreased by 20 to 30% without any decrease of octane numbers.Refineries can select one of the most suitable FDFCC process schemes to revamp the existing FCC units for directly producing clean gasoline meeting quality requirements of European Grade Ⅲ or the current domestic clean fuel specifications.