连续催化重整装置催化剂再生技术特点与运行

介绍了某公司芳烃生产项目中3.2Mt/a连续催化重整装置催化剂再生技术特点，该装置采用UOP第三代催化剂连续再生Cyclemax专利技术。从催化剂的装填、催化剂循环、ChlorsorbTM氯吸收等方面对装置开工及运行情况进行分析介绍，对开工和运行中遇到的问题：如催化剂提升不畅、系统催化剂粉尘量偏大、氯吸收罐超温、催化剂强度和比表面积下降快等问题，通过磨合、消缺和优化。在采用固相脱氯技术替代ChlorsorbTM氯吸收技术，重整混合进料换热器更换为缠绕管式换热器等措施后，催化剂循环系统流畅，催化剂粉尘量小于10 kg?d-1，在反应器入口温度不高于530℃的工况下，重整反应总温降达316℃，催化剂表现出优良的性能。

CHARACTERISTICS AND OPERATION OF CATALYST REGENERATION TECHNOLOGY IN CONTINUOUS CATALYTIC REFORMING UNIT

The characteristics of catalyst regeneration technology of a 3.2 Mt/a continuous catalytic reforming unit in the aromatics project,which adopted the UOP patented Cyclemax continuous regeneration technology,were introduced.The start-up and operation of the plant were analyzed in terms of catalyst loading,catalyst circulation and chlorine absorption by ChlorsorbTM.The problems encountered in the start-up and operation,such as poor catalyst lifting,excessive catalyst dust,over-temperature of chlorine absorption tank,rapid decreases of catalyst strength and specific surface area,were described and analyzed.After using solid-phase dechlorination technology to replace the ChlorsorbTM,and adopting the spiral-wound tube heat exchanger for the mixed feed of the unit,the catalyst circulation system was smooth and the catalyst dust content reduced to less than 10 kg/d,the total temperature reduction of reforming reaction dropped to 316℃when the inlet temperature of the reactor was not higher than 530℃.The catalyst showed excellent performance.