二甲苯异构化催化剂RIC-200长周期运行分析

ANALYSIS OF LONG-TERM OPERATION OF XYLENE ISOMERIZATION CATALYST RIC-200

二甲苯异构化催化剂的稳定性对装置长周期稳定运行起到关键作用。影响二甲苯异构化催化剂寿命的主要因素包括催化剂性能、原料性质、再生、工艺条件和装置稳定性。结合中国石化海南炼油化工有限公司一期芳烃装置长周期运转情况,对RIC-200催化剂性能稳定性进行了分析,催化剂初始活性高、原料杂质控制好、再生烧焦过程平稳、工艺参数调整合理等有助于提高催化剂稳定性。提出了延长二甲苯异构化催化剂使用寿命的建议,为提高芳烃联合装置长周期稳定运行提供借鉴。

Catalyst is the core of xylene isomerization process,and the stability of the catalyst plays a key role in the long-term operation of the device.The main facts influencing the lifetime of xylene isomerization catalyst are catalyst performance,raw material properties,catalyst regeneration as well as process conditions.Based on the long-term operation of phase 1 aromatics plant of SINOPEC Hainan Refining&Chemical Co.Ltd.,the stability of the RIC-200 catalyst was analyzed.The results showed that high initial activity of catalyst,good control of impurity in raw material,stable process of regeneration,reasonable adjustment of process parameters could contribute to the stability of the catalyst.The measures to improve the service life of xylene isomerization catalyst RIC-200 were proposed.