【正文】 ng 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(chǎng)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) .................................................................................................................17 主要試劑和儀器 ...........................................................17 試樣的準(zhǔn)備 .............................................................................................................................17 工藝流程 .................................................................................................................................17 操作步驟 .................................................................................................................................18 清洗劑的清洗原理和要求 .........................................................................................................25 清洗劑的清洗原理 .....................................................................................