尿素装置开车投料合成塔超温的原因及处理  

Reason and treatment of over temperature of synthesis tower of urea plant start-up feeding

作　　者：王朝亮 胡捷 罗旺荣 褚福琪 刘平[1] WANG Chaoliang;HU Jie;LUO Wangrong;CHU Fuqi;LIU Ping(Offshore Oil Fudao Co.,Ltd.Dongfang 572600,Hainan Province)

机构地区：[1]海洋石油富岛有限公司,海南东方572600

出　　处：《氮肥技术》2024年第3期20-21,共2页Nitrogenous Fertilizer Technology

摘　　要：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。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.

关 键 词：合成塔 超温 腐蚀 原因 措施 效果 

分 类 号：TQ441.41[化学工程—化学肥料工业]