摘要
为实现减油增化、降低柴汽比、拓宽乙烯原料来源,从而提高炼化企业经济效益,可将直馏柴油加氢改质后用作乙烯原料。考察了催化剂的分子筛含量在不同反应温度下对改质柴油收率与性质的影响。结果表明:随着分子筛含量增加,催化剂总酸量增大,且弱酸占比增加;提高分子筛含量和提高反应温度均有利于降低改质柴油的芳烃指数(BMCI),但其收率也会降低;在收率为50%的情况下,得到的改质柴油BMCI最低可降至8.6,与原料相比降低25.7,是优质的乙烯原料。
In order to reduce oil and increase chemical,decrease the diesel gasoline ratio,broaden the source of ethylene feedstock,and improve the economic benefit of refining and chemical enterprises,the straight-run diesel can be used as ethylene feedstock after hydro-upgrading.The effects of zeolite content in the catalyst on the yield and properties of modified diesel at different reaction temperature were investigated.The results showed that the total acid content and weak acid ratio of the catalyst increased with the increase of zeolite content.The aromatics index(BMCI)of modified diesel decreased with the increase of zeolite content and reaction temperature,but the yield decreased.At the yield of 50%,the BMCI of modified diesel could be reduced to 8.6 which was 25.7 less than that of the raw diesel,making it a high-quality ethylene feedstock.
作者
李慧胜
徐景东
艾子龙
陈伟敏
徐人威
Li Huisheng;Xu Jingdong;Ai Zilong;Chen Weimin;Xu Renwei(Sinochem Quanzhou Petrochemical Co.,Ltd.,Quanzhou,Fujian 362103;Sinochem Quanzhou Energy Technology Co.,Ltd.)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2024年第6期92-98,共7页
Petroleum Processing and Petrochemicals
关键词
直馏柴油
乙烯原料
加氢改质催化剂
分子筛含量
反应温度
straight-run diesel
ethylene feedstock
hydro-upgrading catalyst
zeolite content
reaction temperature
