连续重整装置再生器压降升高原因分析及解决措施

CAUSE ANALYSIS AND SOLUTION FOR PRESSURE DROP INCREASE OF REGENERATOR IN CONTINUOUS CATALYTIC REFORMING UNIT

连续重整装置再生器压降升高将直接影响本装置的正常生产。针对国内某炼油厂连续重整装置再生器内网堵塞造成压降升高的情况,从再生系统的操作过程、再生器结构特点及制造工艺等方面对压降升高的原因等进行了分析。结果表明,催化剂过度磨损、生产工艺操作不当是内网堵塞、压降升高的直接原因,内网所采用的轴向筛网结构和制造工艺的固有缺陷是间接原因。经过内网清理,同时优化干燥系统运行、淘析气系统运行,消除了再生器内网堵塞隐患。

The increase of pressure drop of regenerator in continuous catalytic reforming unit will directly affect the normal production of the unit.In view of the high pressure drop caused by the internal strainer blockage of the regenerator in a continuous catalytic reforming unit in a domestic refinery,the reasons for the increase of pressure drop were analyzed from the aspects of the operating process of the regeneration system,structural features of the regenerator and manufacturing process.The results showed that excessive wear of catalyst and improper operation of production process were the direct causes of internal strainer blockage and pressure drop increase,while the inherent defects of axial screen structure and manufacturing process used in the internal strainer were the indirect causes.By cleaning the internal strainer,optimizing the operation of drying system and elutriating system,the hidden trouble of internal strainer blockage of the regenerator was eliminated.