介绍了氨合成工艺流程和氨合成催化剂的物理性质、化学组成和催化剂中毒机理。渭化氨合成塔催化剂CO2中毒,导致氨合成塔运行异常,通过催化剂还原,氨合成运行正常,并对如何延长氨合成催化剂的使用寿命进行了探讨。 Ammonia synthesis process and the physical properties of ammonia synthesis catalyst, chemical composition and catalyst poisoning mechanism were introduced. Due to the CO2 poisoning caused by the catalyst of the Weinan ammonia synthesis tower, the operation of the ammonia synthesis reactor is abnormal. Through the catalyst reduction, the ammonia synthesis works normally, and how to prolong the service life of the ammonia synthesis catalyst is also discussed.