轻汽油催化蒸馏深度醚化技术的工业应用

介绍了首套采用国内自主催化蒸馏模块技术的500kt/a催化裂化轻汽油醚化装置的应用情况,结果表明:醚化反应器C5活性烯烃转化率达到73.37%,远高于设计保证值60%;装置整体的C5活性烯烃转化率为93.42%,达到设计保证值93%;C6活性烯烃转化率也高达65.65%,醚化效果良好;经醚化装置处理后,轻汽油的辛烷值(RON)提高2.6个单位,烯烃体积分数从68.2%降至29.2%,降幅达39.0百分点,轻汽油饱和蒸气压降低35.3kPa,醚化工艺可以有效降低汽油的烯烃含量、蒸气压并提高其辛烷值,有利于提高全厂高标号汽油的比例,每年可将60kt的甲醇转化为汽油组分,经济效益显著。

INDUSTRIAL APPLICATION OF CATALYTIC DISTILLATION-DEEP ETHERIFICATION TECHNOLOGY FOR LIGHT GASOLINE

The application of the first set of FCC light gasoline etherification device with capacity of 500kt/a in CNPC Guangxi Petrochemical Company was introduced, which adopted an independent catalytic distillation module technology. The results showed that the C5= conversion in the etherification reactor reaches to 73.37%, higher than the design guarantee value 60%. The total C5= conversion of the whole unit is up to 93.42%, close to the design guarantee value 93%. The C6= conversion is 65.65%. The RON of the etherified light gasoline increases by 2.6 units with a decrease of olefin from 68.2% (v) to 29.2% (v). The saturation vapor pressure of the light gasoline is reduced by 35.3 kPa, indicating that the etherification process is conducive to improve the proportion of high-grade gasoline. The 60 kt/a methanol can be converted into gasoline component and the economic benefit is remarkable.