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蓄熱式加熱爐某一點(diǎn)溫度過(guò)高，其余正常

發(fā)布日期：2019-09-28 作者：點(diǎn)擊：

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　　蓄熱式加熱爐某一點(diǎn)溫度過(guò)高，其余正常.

　　此類(lèi)問(wèn)題原因：

　　1)蜂窩體倒塌，引起部分熱量在引力作用下，從加熱爐爐膛通過(guò)燒嘴直接進(jìn)入風(fēng)箱，未經(jīng)過(guò)蜂窩體蓄熱降溫，引起排煙溫度過(guò)高。

　　蓄熱式加熱爐解決措施：對蜂窩體倒塌的風(fēng)箱進(jìn)行整理，進(jìn)行蜂窩體更換，并在風(fēng)箱上側焊接擋條。

　　2)蜂窩體破碎，起不到蓄熱降溫作用，多發(fā)生在高爐煤氣風(fēng)箱。.

　　造成原因是：高爐煤氣從燃燒轉入排煙過(guò)程中，在引力作用下與爐膛中未燃燒空氣混合，使煤氣和空氣，在燒嘴層蜂窩體立體層面區域內瞬時(shí)短暫燃燒，產(chǎn)生的火焰溫度高于蜂窩體可承受溫度，但隨即被正常溫度廢氣冷卻，周而復始造成破碎；此外煤氣中高溫灰塵會(huì )引起蓄熱體熔蝕加重了破碎。

　　蓄熱式加熱爐解決措施：選用更高溫度的蓄熱體，并經(jīng)過(guò)高熱穩定性處理，增加孔洞直徑，增加壁厚。

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