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href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設備</a>?云南**空氣預熱器推薦咨詢上海板換機械設備供應</p><div id="zoln8zm" class="leftbox clearfix"><h1>云南**空氣預熱器推薦咨詢上海板換機械設備供應</h1><div id="ztlnjal" class="proBig"><div id="oyas8tv" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hgyvx8j" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="odevrvn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>云南**空氣預熱器,空氣預熱器</p><p><span>***更新：</span>2020-12-27 08:08:18</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="x2rdkrd" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海板換機械設備有限公司</a></p><p><span>聯(lián)系人：</span>張云周</p><p><span>郵箱: </span>shinfo@shphe.com</p><p><span>電話: </span>15921733465</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.shphe.com</p><p><span>手機: </span>021-57247534</p><p><span>地址: </span>山陽鎮(zhèn)山寧路99號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ihoq8c3" class="page-proshow02"><p class="title">詳細說明</p><div id="mlctacp" class="box"><p><p> 高爐煤氣是冶金聯(lián)合企業(yè)主要的副產廢氣，經過凈化處理，是一種輸送和使用方便、燃燒后又無需排渣和除塵的質量環(huán)保能源，我國大部分的冶金企業(yè)都采取了煤氣回收利用措施，但隨著高爐原料條件的改善和裝備水平的提高，高爐煤氣的發(fā)熱值越來越低（大型高爐煤氣熱值已降到3140kJ/m3，中小高爐分別降到3340~3550kJ/m3和3760~3970kJ/m3），因此如何有效提高高爐風溫成為一個重要課題。高爐熱風爐采用空氣、煤氣雙預熱是提高風溫的有效途徑。燃燒單一高爐煤氣（熱值3369kJ/m3），云南**空氣預熱器，不預熱時，其理論燃燒溫度只有1280℃；只預熱空氣到250℃時，其理論燃燒溫度提高到1330℃；而空氣、煤氣雙預熱到170℃時，云南**空氣預熱器，云南**空氣預熱器，能提高到1380℃。u工藝：利用300℃左右的煙氣分別預熱助燃空氣、高爐煤氣至約150℃。板式空氣預熱器有換熱模塊組合。云南**空氣預熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南**空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg"></div><p> 按制造廠提供的夾緊尺寸重新夾緊設備，尺寸應均勻一致，壓緊尺寸的偏差應不大于±0．2N(mm)(N。為板片總數(shù)），兩壓緊板間的平行度應保持在2mm以內。②在外漏部位上做好標記，然后換熱器解體逐一排查解決，重新裝配或更換墊片和板片。③將開換熱器解體，對板片變形部位進行修理或者更換板片。在沒有板片備件時可將變形部位板片暫時拆除后重新組裝使用。④重新組裝拆開的板片時，應清潔板面，防止污物粘附著于墊片密封面。板式換熱器串液產生原因：①由于板材選擇不當導致板片腐蝕產生裂紋或穿孔。②操作條件不符合設計要求。③板片冷沖壓成型后的殘余應力和裝配中夾緊尺寸過小造成應力腐蝕。④板片泄漏槽處有輕微滲漏，造成介質中有害物質（如C1）濃縮腐蝕板片。形成串液?，F(xiàn)場分析發(fā)現(xiàn)，系統(tǒng)運行溫度、流量和濃度等工藝參數(shù)均超出設計條件，使用溫度遠超出材料的適用范圍。采用飽和蒸汽作為一次側熱源的板式換熱器在運行過程中容易發(fā)生板片腐蝕。導致產品串液。這是由于蒸汽溫度較高，設備運行中很容易造成橡膠密封墊在高溫下失效，引起蒸汽外漏并在二道密封區(qū)域急速冷凝。隨著外漏的不斷進行，冷凝殘液越聚越多，局部形成cl質量濃度較高區(qū)域。云南空氣預熱器市場前景如何板式空氣預熱器是一種冶金行業(yè)經常使用的節(jié)能、環(huán)保設備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南**空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 過剩空氣系數(shù)是燃料燃燒時實際空氣需要量與理論空氣需要量之比值，用“α”表示。計算公式：α＝()其中：，O2實測值為儀器測量煙道中的O2值舉例：鍋爐測試時O2實測值為13%，計算出的過剩空氣系數(shù)α＝(％)＝國標規(guī)定過?？諝庀禂?shù)應按α＝（燃煤鍋爐），α＝（燃油燃氣鍋爐）進行折算。舉例：燃煤鍋爐，鍋爐測試時O2實測值為13%，SO2排放值500ppm，計算出的過?？諝庀禂?shù)α＝，那么根據(jù)國標規(guī)定，折算后的SO2排放濃度＝SO2實測值×（α實際值/α國標值）＝500ppm×（）=722ppm舉例：燃油燃氣鍋爐，鍋爐測試時O2實測值為13%，SO2排放值500ppm，計算出的過?？諝庀禂?shù)α＝，那么根據(jù)國標規(guī)定，折算后的SO2排放濃度＝SO2實測值×（α實際值/α國標值）＝500ppm×（）=1083ppm空預器漏風依據(jù)下列各式計算：α=21/21-o2Δα=α2-α1δ=。</p><p> 還可以減少一次風沿轉子的上下端面通過徑向間隙漏到二次風的漏風量；主要由扇形板和徑向密封片及間隙調整裝置等組成。軸向密封：空預器在轉子外圓周和機殼之間有較大的空間，如果不采取密封措施，空氣會漏到煙氣中去。為了減少空氣在轉子周圍沿其周向漏到煙氣區(qū)，故需裝設軸向密封裝置。軸向密封裝置由軸向密封片與軸向密封板組成。軸向密封片固定在轉子外圓管的徑向倉隔板上，從熱端到冷端，沿著整個轉子的高度（即軸向）裝設?？烧{軸向密封板裝于主支座板的內側，與扇形板外側端相齊平，從熱端延伸到冷端。環(huán)向密封：包括轉子外周上、下端處的旁路密封（周向密封）和中心筒密封兩部分。旁路密封分為外環(huán)向密封和內環(huán)向密封兩種。外環(huán)向密封是防止空氣通過轉子外圓筒的上、下端面漏入轉子外圓筒與外殼之間的空隙，再沿這個空隙漏向煙氣側。內環(huán)向密封是防止空氣通過軸的上、下端面漏入煙氣通道，旁路密封主要由旁路密封片和T型鋼組成；中心筒密封片固定在轉子中心筒的熱端和冷端端板的圓周上，并隨轉子一起旋轉。密封片與固定在機殼的環(huán)形密封盤或密封蓋的凸緣之間保持一定的間隙。板式空氣預熱器是一種電力工業(yè)經常使用的節(jié)能、環(huán)保設備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南**空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg"></div><p> 【摘要】：為了適應環(huán)保新要求，SCR超低排放改造后，造成空預器壓差偏大，引起風機耗電增加、喘振失速等問題，必須對空預器進行升溫或在線水沖洗。經過多次升溫消除空預器堵塞和在線水沖洗，積累了經驗。空氣預熱器堵灰還會造成鍋爐排煙溫度升高,風煙系統(tǒng)阻力增加，一次風、二次風正壓側和煙氣負壓側的壓差增大，增加了空氣預熱器漏風，堵灰嚴重還會影響鍋爐的帶負荷能力。1.空預器堵塞的一般原因鍋爐燃煤煤種不符合設計值煤種含硫量過高。會引起煙氣**的降低，導致空預器冷端結露而造成腐蝕。燃煤低位發(fā)熱量過低，會造成燃煤量、煙氣量增大，增加了空預器阻力?；曳诌^高，造成鍋爐各受熱面積灰及磨損嚴重。揮發(fā)分過高，引起灰熔點下降，更容易結焦。鍋爐啟動時制粉系統(tǒng)投入不當鍋爐啟動過程中，采用小油點火，或是啟動磨煤機時，爐膛溫度低，煤粉燃燒相對較差，勢必會造成飛灰可燃物大量增加。大量或者長時間投運油時，未燃盡的油污及未燃燒的煤粉進入空預器增加了堵灰的風險?？疹A器吹灰介質未達到設計值空預器采用蒸汽吹灰時，疏水不暢或時間過短，造成空預器吹灰蒸汽過熱度不足，吹灰效果差。有資料指出，空預器吹灰蒸汽過熱度應保持在111-130℃。板式空氣預熱器使用在裂解爐。云南**空氣預熱器</p><p style="text-indent:25px">板式空氣預熱器的作用是降低能源消耗。云南**空氣預熱器</p><p> 對于因氨量瞬間過大造成***氫氨堵塞空預器情況時有發(fā)生，為了預防空預器及風煙系統(tǒng)的安全、經濟運行，應該制定定期工作，各單元機組均應按規(guī)定認真執(zhí)行。每月20日中班，選取負荷大于80%階段（250MW、480MW），進行兩個小時空預器升溫工作，A、B兩側分別進行。減小送風量（或增大引風機開度）以提高該側煙溫至160~170℃之間，注意比較高點不能超過170℃（針對布袋除塵器，排煙溫度不可超過180℃。若無此限值，則應升高至230℃更佳）。每年10月底至4月初暖風器轉入運位后，升溫期間利用該側暖風器，根據(jù)煙溫變化情況和預熱器電流變化情況提高送風溫度至30~40℃之間，其余時間不用投入暖風器。4.升溫消除空預器壓差增大方法及注意事項鍋爐運行中，預熱器阻力超過，應開始執(zhí)行以下措施：投入該側暖風器，根據(jù)煙溫變化情況和預熱器電流變化情況提高送風溫度至30~40℃之間（暖風器停運期間除外）。減小送風量（增大引風機開度）以提高該側煙溫至160~165℃之間，注意比較高點不能超過170℃（針對布袋除塵器，排煙溫度不可超過180℃，若無此限值，則應升高至230℃更佳）。加強預熱器蒸汽吹灰頻次（投入空預器蒸汽連續(xù)吹灰），直至阻力下降至（75%以上負荷）以下。云南**空氣預熱器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2585218.html</p></div></div></div></div></div><div id="rby7huw" class="page-right twoColRt"><div id="vfhbne3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yxzwnzo" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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