煤粉燃燒器點火不成功的原因很多-常見問題-黃石市新瑞環?？萍加邢薰?/title> <meta name="Keywords" content="低氮燃氣燃油燃燒器,高爐氣燃燒器,天然氣燃燒器,超低氮燃燒器,直燃式熱風爐,超低氮熱風爐,脫硝熱風爐,低氮沸騰爐,煤粉燃燒器,煤粉爐" > <meta name="Description" content="故障原因：(1)電火氣量不足(2)電磁閥不工作(主閥、點火閥)(3)電磁閥燒壞(4)氣壓不穩定(5)風量太大在大多數燃燒裝置中，前者是NO的主要來源，我們將此類NO稱為熱反應NO，后者稱之為燃料NO，" > <link href="/Templates/cn/css/style.css" rel="stylesheet"> <link href="/Templates/cn/css/aos.css" rel="stylesheet"> <link href="/Templates/cn/css/style1.css" rel="stylesheet"> <link href="/Templates/cn/css/common.css" rel="stylesheet"> <script src="/Templates/cn/js/jquery.js"></script> <script src="/Templates/cn/js/jquery.superslide.2.1.1.js"></script> <script src="/Templates/cn/js/common.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><button id="mxme0"><s id="mxme0"></s></button><samp id="mxme0"></samp><font id="mxme0"></font><optgroup id="mxme0"><em 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href="/list/?110_1.html">常見問題</a></div> <h3>常見問題<s></s></h3> </div> <div class="content"> <div class="title">煤粉燃燒器點火不成功的原因很多</div> <div class="mark"><span>發布時間：22-06-05</span><span>瀏覽次數：<i id="hits"><script src="/inc/AspCms_Visits.asp?id=443"></script></i></span></div> <div class="showContxt"> <p align="center"><p>故障原因：(1)電火氣量不足(2)電磁閥不工作(主閥、點火閥)(3)電磁閥燒壞(4)氣壓不穩定(5)風量太大</p><p>在大多數燃燒裝置中，前者是NO的主要來源，我們將此類NO稱為熱反應NO，后者稱之為燃料NO，另外還有瞬發NO。燃燒時所形成NO可以與含氮原子中間產物反應使NO還原成NO2。實際上除了這些反應外，NO還可以與各種含氮化合物生成NO2。在實際燃燒裝置中反應達到化學平衡時，[NO2]/[NO]比例很小，即NO轉變為NO2很少，可以忽略。SIEMENS</p><p>降低NOx的燃燒技術NOx是由燃燒產生的，而燃燒方法和燃燒條件對NOx的生成有較大影響，因此可以通過改進燃燒技術來降低NOx，其主要途徑如下:選用N含量較低的燃料，包括燃料脫氮和轉變成低氮燃料;降低空氣過剩系數，組織過濃燃燒，來降低燃料周圍氧的濃度;在過?？諝馍俚那闆r下，降低溫度峰值以減少熱反應NO;在氧濃度較低情況下，增加在火焰前峰和反應區中停留的時間。減少NOx的形成和排放通常運用的具體方法為:分級燃燒、再燃燒法、低氧燃燒、濃淡偏差燃燒和煙氣再循環等。</p><p>自身再循環燃燒器一種是利用助燃空氣的壓頭，把部分燃燒煙氣吸回，進入燃燒器，燃燒器與空氣混合燃燒。由于煙氣再循環，燃燒煙氣的熱容量大，燃燒溫度降低，NOx減少。另一種自身再循環燃燒器是把部分煙氣直接在燃燒器內進入再循環，并加入燃燒過程，此種燃燒器氧化氮和節能雙重。4.濃淡型燃燒器其原理是使一部分燃料作過濃燃燒，另一部分燃料作過淡燃燒，但整體上空氣量保持不變。由于兩部分都在偏離化學當量比下燃燒，因而NOx都很低，這種燃燒又稱為偏離燃燒或非化學當量燃燒。壓力監視器一般用于氣體燃燒器</p><p>分割火焰型燃燒器其原理是把一個火焰分成數個小火焰，由于小火焰散熱面積大，火焰溫度較低，使熱反應NO有所下降。此外，火焰小縮短了氧、氮等氣體在火焰中的停留時間，對熱反應NO和燃料NO都有明顯作用。6.混合促進型燃燒器煙氣在高溫區停留時間是影響NOx生成量的主要因素之一，改善燃燒與空氣的混合，能夠使火焰面的厚度減薄，在燃燒負荷不變的情況下，煙氣在火焰面即高溫區內停留時間縮短，因而使NOx的生成量降低?；旌洗龠M型燃燒器就是按照這種原理設計的。</p><p><br/></p><script 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