摘要
针对中国石化海南炼油化工有限公司重油催化裂化装置再生器催化剂流化异常的情况,根据生产实际和流化的基本理论,分析了导致流化异常的各种因素,找出了流化异常的原因,主要是催化剂堆密度偏低、装置负荷过大和半再生斜管不畅造成的,采取的对策为:通过调整催化剂配方,优化催化剂生产工艺,改善新鲜催化剂的堆密度和外形,并采用堆密度相对较高的磁分离催化剂,加大系统中催化剂置换速率;降低装置负荷,合理调配一再、二再主风量,并控制好两器压力;通过调整松动点和松动风量改善半再生斜管输送工况。通过采取上述措施,解决了再生器催化剂流化异常的问题。
Causes of abnormal catalyst fluidization in the regeneration system of RFCC unit at Hainan Petrochemical Company were analyzed based on operation experiences and basic theory of solid particles fluidization. It was found that lower catalyst bulk density, overload of unit and partial interrupted of semi-regeneration slope pipe were the main causes. Countermeasures were proposed and put into practice, such as optimizing catalyst formula and production technique to improve fresh catalyst bulk density and shape increase the bulk density of regenerated catalyst by using some magnetic separated catalyst reducing unit load and properly adjusting the main air flow ratio between the 1st and 2nd regenerators, as well as optimizing the pressure differential between reactor and regenerator adjusting the number of aerating sites and aerating air flow to improve catalyst transfer in slope pipe. Since then, the abnormal fluidization of catalyst in the regeneration system was eliminated.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2013年第2期61-65,共5页
Petroleum Processing and Petrochemicals
关键词
重油
催化裂化
催化剂
再生器
流化
heavy oil
catalytic cracking
catalyst
regenerator
fluidization
