【正文】 uction. However, many current furnace gas gathering station did not take any anticorrosion scale control measures in the gas gathering station furnace corrosion and scaling serious, heat transfer efficiency reduction will cause a serious accident. Therefore, corrosion of the furnace, is the current domestic and international pressure vessel and pipeline defect assessment method and the hot trend in recent years has made many achievements and progress. Through field investigation and analysis of experiments linked to the main piece of the reasons 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.Keywords： Heating Furnace，Corrosion，Scaling，Cleaning ，Passivation.Comment [MU1]: 按格式要求修改榆林學(xué)院本科畢業(yè)設(shè)計(jì)（論文）I目錄摘 要 .....................................................................................................................................................IABSTRACT.............................................................................................................................................II目錄 .......................................................................................................................................................I第一章 緒論 .......................................................................................................................................1 課題研究的意義 ...........................................................................................................................1 國內(nèi)外研究現(xiàn)狀及分析 ...............................................................................................................2第二章 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(dǎo)致回火的原因 .......................................................................................................4 煙氣中產(chǎn)生冷凝水 ...................................................................................................................5 總結(jié) ...........................................................................................................................................6第三章 加熱爐腐蝕及結(jié)垢原因分析 ...............................................................................................7 水質(zhì)分析 .......................................................................................................................................7 垢樣分析 .......................................................................................................................................7 ................................................................................................................8 結(jié)垢原因 .......................................................................................................................................9第四章 加熱爐腐蝕機(jī)理及影響因素 ...............................................................................................10 ......................................................................................................10 氧腐蝕 .....................................................................................................................................10 ..................................................................................................................11 ......................................................................................................................................11 ..................................................................................................................................12 ..............................................................................................................................12 ......................................................................................................................................12天然氣加熱爐的腐蝕研究II 加熱爐煙道金屬內(nèi)壁的腐蝕 .....................................................................................................13 二氧化碳引起的氫去極化腐蝕 ..............................................................................................13 溶解氧引起氧去極化腐蝕 ......................................................................................................13第五章 防腐措施 ...............................................................................................................................15 防腐措施 .....................................................................................................................................15 防止煙氣腐蝕 .............................................................................................................................15第六章 加熱爐腐蝕防垢技術(shù) ...........................................................................................................17 緩蝕阻垢劑篩選試驗(yàn) .............................