摘要
针对青岛石油化工有限公司1.4Mt/a 重油催化裂化装置 MIP 技术改造后提升管第一反应区温度大幅波动的问题,对催化剂性质及再生催化剂流化状况进行分析,通过采取提高第二再生器床层料位高度、改进松动位置及松动风量的措施来改善大密度催化剂的流化状况。采取改进措施后,再生滑阀压降波动范围明显降低,反应温度大幅波动现象消失,总液体收率较改进前增加了0.85个百分点。
The RFCC unit of Qingdao Petrochemical Company was revamped to conduct MIP operation mode, yet the temperature of the 1st reaction zone in the riser was fluctuated badly after revamping. Investigation on the equilibrium catalyst（E-cat）properties and observation on the fluidization and cycle of regenerated catalyst indicated that high E-cat density and insufficient send-out force caused unstable flow of regenerated catalyst, which significantly affected the pressure drop of regeneration slide valve and the reaction temperature. Countermeasures for enhancing the send-out force of cycle the regenerated catalyst were adopted, the catalyst flow became stable, and less fluctuations of slide valve pressure drop and reaction temperature were observed. The total liquid yield increased by 0.85 percentage point with this smooth operation.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2008年第8期10-13,共4页
Petroleum Processing and Petrochemicals
关键词
催化裂化装置
温度
改进
catalytic cracker
temperature
modification
