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尿素装置开车投料合成塔超温的原因及处理

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尿素装置高压设备的运行状况,关系尿素系统的安全和稳定.尿素的中间产物甲铵具有极强的腐蚀性,导致高压设备衬里的腐蚀,以合成塔顶部衬里腐蚀最为严重.一方面,此处是气液两相接触面,扰动剧烈,加速了介质对衬里的冲击;另一方面,开车时此处极易发生超温现象,加剧腐蚀.本文主要分析合成塔顶部开车时超温的原因,指出采取的措施及取得的成效.
Reason and treatment of over temperature of synthesis tower of urea plant start-up feeding
In urea produnittion,the operation of high-pressure equipment is related to the safety and stability of the urea system.The intermediate product of urea,methyl ammonium,has strong corrosive properties,leads to the corrosion of high-pressure equipment lining is most serious in the top lining of the synthesis tower.On the one hand,this is the gas-liquid two-phase contact surface,and the perturbation is intense,which accelerates the impact of the medium on the lining;on the other hand,when start-up,this place is very prone to the phenomenon of over-temperature,which aggravates the corrosion.This paper mainly analyzes the reasons for over-temperature at the top of the synthetic tower when start-up,points out the treatments taken and the results achieved.

synthesis towerover-temperaturecorrosionreasonstreatmentseffect

王朝亮、胡捷、罗旺荣、褚福琪、刘平

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海洋石油富岛有限公司 海南东方 572600

合成塔 超温 腐蚀 原因 措施 效果

2024

氮肥技术
全国化工合成氨设计技术中心站

氮肥技术

影响因子:0.104
ISSN:
年,卷(期):2024.45(3)