摘要
中国石油化工股份有限公司洛阳分公司Ⅱ套催化裂化装置外取热系统自2011年改造后,出现难流化,难建立循环的现象,无法灵活调整外取热器产汽量,给生产造成很大影响。针对进料复杂多变、外取热器难以流化的现状,采取了外取热器单器流化的操作模式,以保证装置具备灵活的取热手段。分析认为外取热器筒体内流化风管的流化状态对外取热器流化有重要影响。装置检修期间,对外取热器进行了改造,主要改造内容是筒体内的流化风环。改造后,外取热器循环流化和产汽较之前有大幅度改善,为生产优化提供了保障。
After revamping of catalyst cooler in 2＂ FCC unit in SINOPEC Luoyang Company in 2011, it has become very hard to establish fluidization and circulation and difficult to adjust the steam production of cat- alyst cooler. Based upon the variations of feedstock properties and difficulty of fluidization in catalyst cooler, single-cooler fluidization operation has been adopted for the catalyst cooler to ensure the flexibility of heat re- moval duty control. The analysis concluded that the fluidization state of fluidization air in the cooler tubes has a great impact on the fluidization of catalyst cooler. The fluidization annular tube of catalyst cooler has been re- vamped during the overhaul of the plant, and steam production of catalyst cooler has been which provides a good basis for the operation optimization.
出处
《炼油技术与工程》
CAS
2015年第4期28-31,共4页
Petroleum Refinery Engineering
关键词
催化裂化装置
外取热器
流化
改造
catalytic cracking unit, catalyst cooler, fluidization, revamping greatly increased,
