综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制...综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制技术体系。技术体系涵盖了材料防腐、工艺防腐、腐蚀监检测等各方面的内容,形成一套流程化,联系紧密、合力互补的防腐体系。技术体系能够合理分配防腐资源,加强腐蚀中间过程控制,并能持续自我改进。应用体系中的关键技术,已经为中国石化30多家企业的140余套装置提供了技术服务,并取得了良好的社会效益和经济效益。展开更多
MnOx-CeO2 mixed oxide catalysts for methane combustion were prepared with co-precipitation me-thod.With the same content of Mn,the modified catalysts were gained via adding KMnO4.These catalysts were characterized wit...MnOx-CeO2 mixed oxide catalysts for methane combustion were prepared with co-precipitation me-thod.With the same content of Mn,the modified catalysts were gained via adding KMnO4.These catalysts were characterized with XRD,LRS,XPS and TPR techniques,respectively.It was found that the solid solution structures of the catalysts were reserved,while the low-temperature activities were promoted remarkably duo to more Mn4+ species and easier reductions through properly changing the adding amounts of Mn(NO3)2 and KMnO4.With a molar ratio of 1:4,the MnOx-CeO2 catalyst exhibited the highest activity,over which methane conversion reached 90% at a temperature as low as 390 ℃,and a better stability.展开更多
文摘综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制技术体系。技术体系涵盖了材料防腐、工艺防腐、腐蚀监检测等各方面的内容,形成一套流程化,联系紧密、合力互补的防腐体系。技术体系能够合理分配防腐资源,加强腐蚀中间过程控制,并能持续自我改进。应用体系中的关键技术,已经为中国石化30多家企业的140余套装置提供了技术服务,并取得了良好的社会效益和经济效益。
文摘MnOx-CeO2 mixed oxide catalysts for methane combustion were prepared with co-precipitation me-thod.With the same content of Mn,the modified catalysts were gained via adding KMnO4.These catalysts were characterized with XRD,LRS,XPS and TPR techniques,respectively.It was found that the solid solution structures of the catalysts were reserved,while the low-temperature activities were promoted remarkably duo to more Mn4+ species and easier reductions through properly changing the adding amounts of Mn(NO3)2 and KMnO4.With a molar ratio of 1:4,the MnOx-CeO2 catalyst exhibited the highest activity,over which methane conversion reached 90% at a temperature as low as 390 ℃,and a better stability.
