催化裂化轻汽油醚化新工艺研究

研究了催化裂化轻汽油预处理及深度醚化工艺。结果表明，经过预处理，碱性氮脱除率可达80％以上，二烯烃脱除率达90％以上，叔碳烯烃收率接近100％。原料经预处理后，醚化催化剂寿命大大延长。经过深度醚化，叔碳烯烃总转化率达70％以上，催化裂化全馏程汽油的研究法辛烷值提高2．1个单位，蒸气压下降10．8kPa，烯烃含量减少9．36个百分点，含氧量达2．0％。

STUDY ON NEW ETHERIFICATION TECHNOLOGY FOR LIGHT FCC GASOLINE

The technology of pretreatment and two stage etherification for light FCC gasoline was investigated. After pretreatment, the removal rate of basic nitrogen and dienes was more than 80%and 90% respectively; the yield of the tertiary carbon olefins was near 100%: the lifetime of the etherification catalyst was remarkably extended; and the properties of the light FCC gasoline were improved. The total conversion of the tertiary carbon olefins exceeded 70%. The research octane number of the whole range FCC gasoline increased by 2. 1 unitsl its vapor pressure decreased by 10. 8 kPa; the olefin content decreased by 9. 36%; and the oxygen content amounted to 2. 0%.