【正文】 ............... 15 工藝流程 ....................................................................................................................... 15 操作步驟 ....................................................................................................................... 15 腐蝕速率計算方法 ［ 7］ .................................................................................................. 16 國內(nèi)緩蝕阻垢劑配方篩選試驗 ................................................................................... 16 清洗劑的清洗原理和要求 .............................................................................................. 21 清洗劑的清洗原理 ........................................................................................................ 21 工業(yè)清洗劑的要求 ....................................................................................................... 22 7 總結(jié) ...................................................................................................................................... 24 參考文獻 ................................................................................................................................. 26 致謝 ......................................................................................................................................... 27 天然氣加熱爐的腐蝕研究 1 1 緒論 課題研究的意義 油氣田生產(chǎn)過程中，腐蝕所造成的損失十分巨大。 關(guān)鍵詞 ：加熱爐，腐蝕，結(jié)垢， 清洗，鈍化 研究類型： 綜合 研究 ABSTRACT The corrosion of the forms of water sides and the flue of the heating furnace is varied from different parts. The main reason for these phenomena is related to the factors about the heat transfer condition and corrosion of different parts. Furnace corrosion is mainly to oxygen corrosion, corrosive ions corrosion, acid corrosion, corrosion of iron scale, wet and dry line corrosion, alkaline, the main reason for the corrosion oxygen. Metal furnace flue wall is most vulnerable to acid corrosion of carbon dioxide and oxygen to the polarization caused by oxygen corrosion. The safe use of heating and heat transfer efficiency of the heating furnace affects the security of stable natural gas production directly. However, many current furnace gases gathering station did not take any anticorrosion measures. And the gas gathering station furnace corrosion and the reduction of the heat transfer efficiency will cause a serious accident. Therefore, the research of corrosion about the heating furnace is a hot point and trend of the current domestic and international pressure vessel and pipeline .And it has made many achievements and progress in recent years. This paper is mainly a research about the reason for natural gas furnace corrosion and scaling analysis, corrosion mechanism and influencing factors, anticorrosion measures, furnace cleaning and corrosion and scale inhibition technology and so on. Key words: The heating furnace, Corrosion, Scaling, Cleaning, Inactivation Thesis Type ： Comprehensive Study 目錄 I 目錄 摘 要 ........................................................................................................................................ I ABSTRACT .............................................................................................................................II 1 緒論 ..................................................................................................................................... 1 課題研究的意義 ................................................................................................................ 1 國內(nèi)外研究現(xiàn)狀及分析 .................................................................................................... 2 2 現(xiàn)場調(diào)查 ................................................................................................................................ 3 加熱爐工作原理 ................................................................................................................ 3 加熱爐使用工況 ................................................................................................................ 3 加熱爐腐蝕狀況 ................................................................................................................ 4 煙道堵塞現(xiàn)象 ................................................................................................................. 4 煙道堵塞導致回火的原因 ............................................................................................. 4 煙氣中產(chǎn)生冷凝水 ......................................................................................................... 5 總結(jié) ................................................................................................................................. 5 3 加熱爐腐蝕及結(jié)垢原因分析 ................................................................................................ 6 水質(zhì)分析 ............................................................................................................................ 6 垢樣分析 ............................................................................................................................ 6 加熱爐產(chǎn)生硬垢的原因 ..................................................................................................... 7 結(jié)垢原因 ............................................................................................................................ 7 4 加熱爐腐蝕機理及影響因素 ................................................................................................ 9 加熱爐水側(cè)不同部位的腐蝕 ............................................................................................. 9 氧腐蝕 ............................................................................................................................. 9 腐蝕性離子的腐蝕 ....................................................................................................... 10 酸腐蝕 .............................