水煤浆气化装置腐蚀问题的调研分析与对策  

Investigation and analysis of corrosion in coal water slurry gasification unit and its countermeasures

作　　者：杨宏泉 包振宇 许荣发 杨琰嘉 李文盛 王宁 YANG Hongquan;BAO Zhenyu;XU Rongfa;YANG Yanjia;LI Wensheng;WANG Ning(SINOPEC Ningbo Engineering Co.,Ltd.,Ningbo 315103,China;SEG Luoyang R&D Center of Technology,Luoyang 471003,China;SINOPEC Nanjing Chemical Industrial Corporation,Nanjing 210048,China)

机构地区：[1]中石化宁波工程有限公司,浙江宁波315103 [2]中石化炼化工程集团洛阳技术研发中心,河南洛阳471003 [3]中国石化集团南京化学工业有限公司,江苏南京210048

出　　处：《石油化工腐蚀与防护》2023年第4期21-25,共5页Corrosion & Protection In Petrochemical Industry

摘　　要：设备和管道的腐蚀是制约水煤浆气化装置长周期稳定运行的一个重要原因。水煤浆气化过程中,装置内的流体介质为含有大量腐蚀性物质和固体颗粒的多相混合物,因此冲蚀和结垢是设备和管道面临的主要损伤原因,而气液相中的多种腐蚀性物质也会引发不同类型的腐蚀问题。通过现场调研,结合水煤浆气化装置的工艺流程和腐蚀性介质的组成,对气化单元、合成气洗涤单元、黑水闪蒸单元以及黑灰水处理单元的腐蚀现状和成因进行了深入分析,并针对不同的腐蚀类型提出了相应的防护措施,为水煤浆气化装置的生产操作提供了经验借鉴和技术支撑。Corrosion of equipment and pipeline is an important factor that restricts the long⁃term stable operation of coal water slurry gasification unit.In the gasification process,the fluid media in the device is a multiphase mixture containing a large num⁃ber of corrosive substance and solid particles,so erosion and scaling are the main causes of damage to equipment and pipelines,while various corrosive substance in the gas⁃liquid phase can also cause different forms of corrosion failure.Through on⁃site re⁃search,combined with the process flow and the composition of corrosive media,a thorough analysis was conducted on the corro⁃sion status and causes of the gasification unit,synthesis gas washing unit,black water flash unit,and black or gray water treat⁃ment unit.Corresponding protective measures were proposed for different corrosion types,providing experience reference and technical support for the production operation of the coal water slurry gasification plant.

关 键 词：水煤浆气化 腐蚀 结垢 防护策略 

分 类 号：TQ545[化学工程—煤化学工程] TQ050.96