掺渣蜡油的稳定性及其对催化裂化产物分布的影响

发布时间：2018-06-11 11:38

本文选题：掺渣蜡油 + 沥青质　；参考：《石油学报(石油加工)》2017年04期

【摘要】：以虎特减压渣油(HTVR)和大庆蜡油(DQVGO)为基本原料,研究了掺渣蜡油的稳定性变化规律,并采用微型催化裂化装置考察了掺渣蜡油的稳定性对催化裂化产物分布的影响。结果表明,随着混合油中HTVR含量的提高,掺渣蜡油由不稳定状态逐渐过渡到稳定状态,且掺渣蜡油的稳定程度随掺渣率的增大而逐渐提高。与沥青质严重絮凝及沥青质稳定的掺渣蜡油相比,沥青质基本稳定的掺渣蜡油催化裂化产物中LPG、汽油和轻质油收率最高,而焦炭和油浆的收率最低。催化裂化产物的分布特别是焦炭收率不仅与催化裂化原料油中胶质沥青质等重组分的含量有关,也与原料油中沥青质的稳定性有关,且原料油的稳定性对催化裂化产物分布的影响更大。保证掺渣蜡油进料前的稳定性对提高催化裂化工艺目标产物的收率具有重要意义。
[Abstract]:In this paper, the stability of wax oil was studied by using HTVRand DQVGO) as basic feedstocks, and the effect of the stability of slag oil on the distribution of FCC products was investigated by using a micro catalytic cracking unit. The results show that with the increase of HTVR content in the mixed oil, the slag wax oil is gradually transferred from unstable state to stable state, and the stability degree of slag wax oil increases with the increase of slag content. Compared with asphaltene severe flocculation and asphaltene stable slag wax oil, the yield of LPG, gasoline and light oil is the highest, while the yield of coke and slurry is the lowest. The distribution of FCC products, especially the yield of coke, is related not only to the content of reconstituted asphaltene in FCC feedstock, but also to the stability of asphaltene in feedstock. The stability of feedstock has a greater effect on the distribution of FCC products. It is important to improve the yield of target products of FCC process by ensuring the stability of slag oil before feed.
【作者单位】：中国石化石油化工科学研究院;
【基金】：国家重点基础研究发展计划(973计划)项目(2012CB224801)基金资助
【分类号】：TE624.41

【参考文献】