摘要
针对延迟焦化产高硫石油焦可能被限制出厂的问题,探索研究高残炭劣质减压渣油催化裂化以及焦炭在线联产高压蒸汽的可行性。以残炭为18.62%的劣质中东混合减压渣油为原料,以催化裂化平衡剂为催化剂,通过固定流化床装置考察反应温度、剂油比和空速对减压渣油催化裂化反应的影响来探索合适的加工条件,并根据产物的性质对其用途进行讨论。结果表明:高残炭劣质减压渣油催化裂化联产高压蒸汽路线具有可行性,随着反应深度增加,干气和焦炭产率增加,总液体收率降低,可根据产物需求灵活调变加工条件,多产馏分油或多产蒸汽;不同反应条件下,三烯(乙烯、丙烯和丁烯)收率较典型的催化裂化三烯收率低,馏分油中富含芳烃,可用于生产轻质芳烃,也可作为生产类石墨结构碳材料的原料。
In view of the problem that the production of high sulfur petroleum coke from delayed coker may be restricted in market,the feasibility of on-line co-production of high-pressure steam from coke in catalytic cracking of inferior vacuum residue with high carbon residue was studied.Using inferior Middle East mixed vacuum residue with 18.62%of carbon residue as feed and FCC equilibrium catalyst as catalyst,the effects of reaction temperature,mass ratio of catalyst to oil and space velocity on the catalytic cracking of vacuum residue were investigated in a fixed fluidized bed reactor,and the use of the products was discussed according to their properties.The results showed that the process route of inferior vacuum residue with high carbon residue catalytic cracking combined with generating high-pressure steam was feasible.With the increase of reaction depth,the dry gas and coke yields increased,and the total liquid yield decreased.The processing conditions could be flexibly adjusted according to the product demand to produce more distillate oil or more steam.Under different reaction conditions,the total yield of ethylene,propylene and butene was lower than that of typical catalytic cracking,and the content of aromatics in the distillates was relatively high,which could produce light aromatics and also be used as feedstock for the production of graphite-like carbon materials.
作者
任磊
崔琰
李子锋
王勇
申海平
Ren Lei;Cui Yan;Li Zifeng;Wang Yong;Shen Haiping(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2023年第5期7-12,共6页
Petroleum Processing and Petrochemicals
基金
中国石油化工股份有限公司合同项目(120038)。
关键词
残炭
减压渣油
催化裂化
蒸汽
carbon residue
vacuum residue
catalytic cracking
vapor
