摘要
为提高轻石脑油的利用价值,实现“宜油则油,宜烯则烯”的原料优化目的,通过正异构烷烃分离使不同组分物尽其用,富含异构烷烃的轻石脑油辛烷值高,用作汽油调合组分以提升全厂汽油池辛烷值及改善辛烷值分布,富含正构烷烃的轻石脑油用作蒸汽裂解原料提高乙烯收率。在企业汽油池辛烷值不足的情况下,实施轻石脑油正异构烷烃吸附分离项目可以提高全厂汽油池辛烷值以及增加高标号汽油产量,同时也可以增加蒸汽裂解装置的乙烯收率。以某企业为例的测算结果表明,轻石脑油正异构烷烃吸附分离方案实施后对企业的经济效益有很大提升,按2019年布伦特原油60美元/bbl(1 bbl≈159 L)价格体系测算,汽油和烯烃产品收入可增加73964万元a,扣除燃料动力费用和辅助材料费用增加的7674万元/a,项目净收益为66290万元/a。
Based upon the principle of“producing the products according to feedstock features”,n-paraffins are separated from i-paraffin to realize the optimal utilization of light naphtha raw material.The light naphtha,which is rich in i-paraffin components with high octane number,is used as the gasoline blending component to increase the octane number and to improve the octane distribution of the gasoline pool.The light naphtha with more n-paraffin component can be used as steam cracking feedstock to increase the ethylene yield.In the case of insufficient octane number of the gasoline pool of the factory,the implementation of i/ n hydrocarbons separation is very helpful to increase the octane number of the gasoline pool and the output of high-octane gasoline,and at the same time,increase the yield of ethylene products.Taking a refinery as an example,the implementation of the i/ n-paraffin separation greatly improved the economic benefits.Based on the Brent crude oil price of$60/ bbl(1 bbl≈159 L)in 2019,the revenue of gasoline and olefins products can be increased by RMB739.64 million per year.After deducting the increase of fuel power cost and auxiliary material cost of 76.74 million Yuan a,the net income of the project is 662.9 million Yuan /a.
作者
向明燕
Xiang Mingyan(SINOPEC Engineering Incorporation,Beijing 100101)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2020年第9期98-103,共6页
Petroleum Processing and Petrochemicals
关键词
轻石脑油
优化利用
汽油调合
蒸汽裂解
light naphtha
optimal utilization
gasoline blending
steam cracking
