1025t-h鍋爐爐膛高溫腐蝕及爐膛出口煙溫偏差研究.pdf

1、華北電力大學(xué)（保定）碩士學(xué)位論文1025th鍋爐爐膛高溫腐蝕及爐膛出口煙溫偏差研究姓名：趙冰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：動(dòng)力工程指導(dǎo)教師：陳鴻偉云智彪20040101華北電力大學(xué)碩士學(xué)位論文摘要I摘要目前內(nèi)蒙區(qū)機(jī)組普遍存在著爐膛出口煙溫偏差和水冷壁煙側(cè)高溫腐蝕現(xiàn)象給鍋爐的安全經(jīng)濟(jì)運(yùn)行帶來(lái)很大危害某電廠#1爐造成高溫腐蝕的原因主要是煤質(zhì)問(wèn)題煤粉顆粒粗及一二次風(fēng)分離為消除爐膛出口煙溫偏差關(guān)鍵在于減輕爐膛出口煙氣的殘余旋轉(zhuǎn)及縮短火焰長(zhǎng)度根據(jù)本文數(shù)

2、值模擬和冷態(tài)模化試驗(yàn)的結(jié)果得到了合理的改造方案實(shí)驗(yàn)表明本文所提出的改造方案能夠達(dá)到解決高溫腐蝕減輕爐膛出口煙溫偏差的問(wèn)題關(guān)鍵詞高溫腐蝕煙溫偏差冷態(tài)?；瘮?shù)值模擬ABSTRACTAtpresentthegeneralproblemssuchastemperaturecrosionofwaterwallgastemperaturedeviationdoexistamongPowerPlantinNeimengregionwhichbrings

3、muchharmtosafetyeconomicaloperationofboiler.ThereasonofthehightemperaturecrosionofwaterwallofNo.1boilerofsomePowerPlantisthecoalproblemseparationofprimarysecondaryair.Indertoreducethegastemperaturedeviationthekeyisinredu

4、cingresidualrotationshtenstheflamelength.Accdingtotheresultsofcoldmodeltestnumericalsimulationofthispaperthereasonableschemeisgot.Theresultshowsthattheschemeofthispapercanresolvesthehightemperaturecrosiongastemperaturede