摘要
利用芳烃抽提、分子筛脱蜡等方法改进裂解原料,并对F-T合成馏分油的裂解性能进行了初步研究。采用芳烃抽提方法处理原料,提高了原料中烷烃的含量,在裂解条件和乙烯产量相同的条件下,可以节省裂解原料16%以上;而采用5A分子筛对原料进行脱蜡处理,可以使原料中正构烷烃的含量大大提高,在更为缓和的裂解条件下,乙烯产量相同时,可节省裂解原料50%以上。F-T合成馏分油以正构烷烃为主,是一种很好的裂解原料。F-T合成馏分油与常规裂解原料相比,在更为缓和的裂解条件下,可以得到更高的乙烯、丙烯和丁二烯收率。
Steam cracking performance of aromatic extracted naphtha,5A molecular sieve dewaxing treated naphtha and F-T synthesis oil had been studied. On the basis of same ethylene production capacity and same process parameters, taking aromatic extracted naphtha as feed, more than 16% of feed can be saved in comparing with straight-run naphtha. Similarly, on the basis of same ethylene production capacity and even under more mild steam cracking conditions, taking 5A molecular sieve dewaxing treated naphtha as feed, more than 50% of feed can be saved, due to increase of normal- paraffin content in the feed in comparing with straight-run naphtha. The main composition of F-T synthesis oils is normal-paraffin. Their good steam cracking performance is as expected. Comparing with straight-rtm naphtha and straight-run atmospheric gas oil, steam cracking of naphtha and atmospheric gas oil from F-T synthesis achieves higher yields of ethylene, propylene and butadiene under more mild steam cracking conditions.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2008年第1期8-11,共4页
Petrochemical Technology
关键词
裂解
原料优化
正构烷烃
芳烃抽提
分子筛脱蜡
F-T合成
steam cracking
feedstock optimization
normal-paraffin
aromatic extraction
molecularsieve dewaxing
F-T synthesis
