摘要
考察了外加催化剂种类、外加催化剂浓度对塔河常压渣油悬浮床加氢裂化产物氮分布的影响。塔河常压渣油分别添加不同浓度的酸性催化剂(USY,HY)和碱性催化剂(CaO,MgO)进行悬浮床加氢反应,对反应后产物进行常减压蒸馏,切割馏分范围为IBP～180℃,180～360℃,360～500℃,>500℃尾油。研究表明:外加催化剂无论是酸性还是碱性:①都有促进裂化的作用;②对产物中各馏分的碱性氮、总氮分别占原料碱性氮、原料总氮的质量分数Nbf、Ntf值影响不大,说明碱性氮、总氮的转化无明显的选择性。
The impact of additional catalyst types and concentration on nitrogen distribution in Tahe atmosphere residue slurry-bed hydrocracking products has been investigated by adding the acidic catalysts （USY, HY） and alkali catalysts （CaO, MgO） of different acidities and alkalinities into atmospheric residue for the slurry-bed hydrocracking reaction and separating the reaction products into IBP-180 ℃, 180-360 ℃, 360- 500 ℃ and 〉 500 ℃unconverted oil fractions in the atmospheric-vacuum distillation unit. The study reveals that the additional catalysts, whether they are acidic or alkali, will accelerate the cracking reaction. The transformation performances of basic nitrogen （Nbf） and total nitrogen （Ntf） are very close. Both acidic catalysts and alkali catalysts have little effect on basic nitrogen and total nitrogen in the products, which indicates that the basic nitrogen and total nitrogen have no obvious selectivity in transformation.
出处
《炼油技术与工程》
CAS
北大核心
2007年第2期38-41,共4页
Petroleum Refinery Engineering
关键词
悬浮床加氢
酸性催化剂
碱性催化剂
氮分布
slurry-bed hydrocracking, acidic catalyst, alkali catalyst, nitrogen distribution
