硫酸盐还原菌对喷气燃料银片腐蚀机理研究  

STUDY ON THE MECHANISM OF SULFATE REDUCING BACTERIA ON SILVER STRIP CORROSION OF JET FUEL

作　　者：苏鹏 李彦琦 李泽振 张永虎 熊云 Su Peng;Li Yanqi;Li Zezhen;Zhang Yonghu;Xiong Yun(Army Logistics University of PLA,Chongqing 401311;PLA Energy Quality Supervision Station of Beijing Department;Energy Quality Supervision Station of PLA)

机构地区：[1]陆军勤务学院,重庆401311 [2]联勤保障部队军需能源质量监督总站北京质量监督站 [3]联勤保障部队军需能源质量监督总站

出　　处：《石油炼制与化工》2022年第7期51-57,共7页Petroleum Processing and Petrochemicals

基　　金：军队后勤科研项目(YX216J013);重庆市教育委员会青年基金资助项目(KJQN201912907)。

摘　　要：选取脱硫弧菌(Desulfotomaculumruminis)和脱硫肠状菌(Desulfovibriofructosivorans)两种硫酸盐还原菌(SRB)为对象,通过构建SRB和喷气燃料储存体系,考察其对银片腐蚀性能的影响,结合扫描电子显微镜/EDS能谱、X射线光电子能谱分析腐蚀后银片的形貌和官能团情况,分析了SRB对银片的腐蚀机理。结果表明:2种SRB均能导致喷气燃料出现银片腐蚀,SRB数量越多,银片腐蚀情况越严重;SRB集中于水相附着于银片表面发生腐蚀过程,H_(2)S由水相扩散至油相导致油相银片发生腐蚀;银片在油相中的腐蚀产物以Ag_(2)S相对较多,在水相中腐蚀产物以FeS_(2)及FeS相对较多。The effects of sulfate reducing bacteria(SRB)in jet fuel storage system on the corrosion performance of silver strips were investigated by using two kinds of SRB,namely Desulfotomaculumruminis and Desulfovibriofructosivorans.The corrosion mechanism of SRB on silver strip was analyzed by means of SEM/EDS and XPS,and the morphology and functional groups of the corroded silver strip were analyzed.The results show that both SRB can cause silver strip corrosion in jet fuel.The more SRB there are,the more serious the corrosion of silver strips is.The SRB concentrate on the water phase and adhere to the surface of the silver strips to corrode.During the process,H_(2)S produced by SRB diffused from the water phase to the oil phase to cause corrosion of the oil phase silver strips.The main corrosion products of silver strips in the oil phase were Ag_(2)S,and those in the water phase were FeS_(2) and FeS.

关 键 词：喷气燃料 硫酸盐还原菌 银片腐蚀 

分 类 号：TE626.23[石油与天然气工程—油气加工工程]