常减压蒸馏塔塔顶注氨条件下的腐蚀及对策  

DOME CORROSION OF ATMOSPHERIC AND VACUUM COLUMNS DURING AMMONIA INJECTION AND ITS COUNTERMEASURES

作　　者：施宝昌[1] 王勤娜[1] 郭建[2] 庄锁良 胡彦华 姜慧芬 李树林 

机构地区：[1]北京化工大学,北京100029 [2]北京燕山石油化工公司炼油厂

出　　处：《石油炼制与化工》1997年第4期44-46,共3页Petroleum Processing and Petrochemicals

摘　　要：为了减轻常减压蒸馏塔塔顶的腐蚀，国内炼油厂普遍采用了注氨、注水的措施，但塔顶的初凝区仍存在较严重的腐蚀。在分析常减蒸馏塔顶刻凝区NH3－HCI-H2S-H2O气液相平衡关系的基础上，阐明了注氨状态下，酸性腐蚀区形成的原理，为使用BZH－1中和缓蚀剂提供了缓蚀的理论依据。并经北京燕山石油化工公司炼油厂现场应用，结果证明该剂的援蚀效果良好。Ammonia and water spirit are in common use in Chinese refineries to alleviate the corrosion of atmospheric and vacuum columns， but the column dome corrosion is still existed． Based on the gas-liquid equilibrium of NH3- HCI－H2S-H2O， the principles of the formation of the acidic corrosion region are clarified． A neutralization inhibitor， BZH－1， is proposed to replace the ammonia injection． It has been successfully used in the distillation unit of Yanshan Petrochemical Corporation．

关 键 词：常减压蒸馏装置 常压蒸馏塔 减压蒸馏塔 腐蚀 

分 类 号：TE985.9[石油与天然气工程—石油机械设备]