石油化工腐蚀与防护
石油化工腐蝕與防護
석유화공부식여방호
PETROCHEMICAL CORROSION AND PROTECTION
2012年
5期
1-2,39
,共3页
刘艳峰%徐剑%于洋%王子昂%裴冬双%宫庆想
劉豔峰%徐劍%于洋%王子昂%裴鼕雙%宮慶想
류염봉%서검%우양%왕자앙%배동쌍%궁경상
初馏塔顶系统%电脱盐注水%腐蚀%pH%值%铁离子含量
初餾塔頂繫統%電脫鹽註水%腐蝕%pH%值%鐵離子含量
초류탑정계통%전탈염주수%부식%pH%치%철리자함량
overhead system of primary fractionator%injection of electro-static desalting%corrosion%pH value%iron ions
中国石油辽河石化公司东蒸馏装置初馏塔顶系统的腐蚀一直较轻微,塔顶冷凝水呈碱性,初馏塔顶系统未设注中和缓蚀剂等工艺防腐措施。自2010年7月末以来,东蒸馏装置初馏塔顶冷凝水中的铁离子有严重超标现象,初馏塔顶冷凝水的pH值也出现了很大变化。为了寻找影响初馏塔顶系统腐蚀的因素,对装置的各种水质及原油性质变化进行监测,发现该装置电脱盐注水的性质对初馏塔顶系统的腐蚀有着重要的影响。
中國石油遼河石化公司東蒸餾裝置初餾塔頂繫統的腐蝕一直較輕微,塔頂冷凝水呈堿性,初餾塔頂繫統未設註中和緩蝕劑等工藝防腐措施。自2010年7月末以來,東蒸餾裝置初餾塔頂冷凝水中的鐵離子有嚴重超標現象,初餾塔頂冷凝水的pH值也齣現瞭很大變化。為瞭尋找影響初餾塔頂繫統腐蝕的因素,對裝置的各種水質及原油性質變化進行鑑測,髮現該裝置電脫鹽註水的性質對初餾塔頂繫統的腐蝕有著重要的影響。
중국석유료하석화공사동증류장치초류탑정계통적부식일직교경미,탑정냉응수정감성,초류탑정계통미설주중화완식제등공예방부조시。자2010년7월말이래,동증류장치초류탑정냉응수중적철리자유엄중초표현상,초류탑정냉응수적pH치야출현료흔대변화。위료심조영향초류탑정계통부식적인소,대장치적각충수질급원유성질변화진행감측,발현해장치전탈염주수적성질대초류탑정계통적부식유착중요적영향。
The primary fractionator in the east distillation unit of PetroChina Liaohe Petrochemical Company had been operating with little corrosion in the overhead.The pH value of overhead condensate water was of alkali,and no process corrosion prevention measures had been taken such as injection of corrosion inhibitor in the overhead.Ever since July,2010,iron ions in the overhead condensate water of the primary fractionator exceeded specifications,and there was a great change in pH value of overhead condensate water.To find out the causes of overhead corrosion,the changes of quality of water into the unit and crude oil properties were monitored.It is found that the properties of injection water in electro-static desalting unit have a great impact on the corrosion in the overhead of primary fractionator.
