原油碱性化对沥青装置的腐蚀与对策  

Impact of Alkalining of Crude Oil on Corrosion and Countermeasures

作　　者：汪希领[1] 王喜月[1] 陈福涛[1] 

机构地区：[1]中国石油化工股份有限公司西安石化分公司,陕西西安710086

出　　处：《石油化工腐蚀与防护》2009年第B05期116-118,共3页Corrosion & Protection In Petrochemical Industry

摘　　要：沥青装置加工原油性质发生碱性化后,低温部位主要的HCl+H_2S+H_2O型均匀腐蚀减弱,高温部位的均匀腐蚀相对会有所下降,但是原油换热器出现碱脆,设备垢下腐蚀有所增强,与动设备相连的高温管线弯头焊缝处碱脆腐蚀增加。When the crude oil for the asphalt unit becomes alkaline, the main uniform HCl ＋ H2S ＋ H2O corrosion in the low - temperature section of the unit becomes mitigated and the uniform corrosion in the high - temperature section is reduced. Whereas, the alkaline embrittlement appears in crude heat exchangers and the underdeposit corrosion of equipment is aggravated. The alkaline embrittlement corrosion on the welds of elbows in high - temperature pipelines connecting rotary equipment is increased.

关 键 词：原油性质 碱性 均匀腐蚀 垢下腐蚀 碱脆 

分 类 号：TE986[石油与天然气工程—石油机械设备]