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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="832ug3m" 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(chǎn)品關(guān)鍵詞：</span>吉林空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器</p><p><span>***更新：</span>2020-08-29 02:20:04</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8zykrdp" 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(shè)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="7rtacta" class="page-proshow02"><p class="title">詳細說明</p><div id="gubdpbn" class="box"><p><p> 本起空預(yù)器堵塞事件中B側(cè)空預(yù)器發(fā)生***氫氨堵塞嚴重，而A側(cè)較輕的原因經(jīng)檢查為：B側(cè)脫硝從鍋爐尾部煙道轉(zhuǎn)彎到脫硝入口的水平煙道處積灰明顯比A側(cè)積灰要嚴重，進一步檢查發(fā)現(xiàn)B進口在安裝時少安裝一級導(dǎo)流板，說明，B側(cè)脫硝因少裝一級導(dǎo)流板，造成煙氣中因渦流等原因形成煙道阻力加大，一方面因B側(cè)入口流場不均，易造成局部氨逃逸率增加。另一方面B側(cè)煙氣流量降低，進一步加劇流場不均。**終導(dǎo)致B側(cè)脫硝局部氨逃逸率超標幅度增加，造成B側(cè)空預(yù)器堵塞更嚴重。4結(jié)論為提高SCR脫硝工藝脫硝效率，NH3/NOx摩爾比通?？刂茷榇笥?，因此脫硝過程氨逃逸不可避免。SCR脫硝過程使用的釩基催化劑會對煙氣中的SO2產(chǎn)生催化作用，使其易被氧化為SO3。SO3與逃逸的氨反應(yīng)生成***氫氨，***氫氨附著于催化劑的表面會阻塞催化劑并影響其活性，且***氫氨的粘性使之易于牢固黏附在空預(yù)器蓄熱元件的表面，使蓄熱元件積灰，吉林空氣預(yù)熱器誠信企業(yè)，空預(yù)器流通截面減小、阻力增加以及換熱元件的換熱效率下降，吉林空氣預(yù)熱器誠信企業(yè)，吉林空氣預(yù)熱器誠信企業(yè)?？赏ㄟ^控制SCR脫硝過程氨逃逸量和煙氣中SO3的方法減少***氫氨的生成量。為防止催化劑因***氫氨的滯留而失去活性，應(yīng)合理控制SCR脫硝裝置在低負荷下的運行時間。為有效降低***氫氨在空預(yù)器換熱元件上的形成速率。板式空氣預(yù)熱器廠家。吉林空氣預(yù)熱器誠信企業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 進汽端比疏水端提高了約300mm左右，可以緩解了暖風器泄漏幾率。在暖風器處都增加了玻璃觀察窗，以方便運行過程中檢查暖風器是否內(nèi)漏。制粉系統(tǒng)投運時盡量滿足著火能量機組每次停運時，在條件允許的情況下，盡量將安裝有等離子點火裝置的磨煤機對應(yīng)煤斗燒空，并在下次機組啟動前將該煤斗配上發(fā)熱量大于4500kcal/kg，揮發(fā)份較高的煤種。同時等離子磨煤機啟動前應(yīng)保證二次風溫大于200℃，以減少制粉系統(tǒng)啟動初期大量不完全燃燒產(chǎn)物的生成，從而抑止空預(yù)器堵灰的發(fā)生。加強省煤器輸灰系統(tǒng)綜合治理鍋爐日常運行中加強省煤器灰斗料位的監(jiān)視和控制，一旦發(fā)現(xiàn)高料位，立即聯(lián)系檢修進行處理。同時利用停爐機會，檢查省煤器灰斗真實料位，徹底疏通輸灰管線。對空預(yù)器要進行定期吹灰且吹灰蒸汽要保證足夠的過熱度吹灰至少每8小時進行一次，如果發(fā)現(xiàn)空預(yù)器差壓有上升趨勢，應(yīng)縮短吹灰時間間隔。吹灰程序控制必須采取疏水溫度控制，不能通過時間簡單判斷疏水是否干凈，必要時進行疏水管路改造以確?？疹A(yù)器吹灰效果。加強吹灰閥門的綜合治理每次停爐后對空預(yù)器吹灰進汽閥和吹灰***進行檢查處理，保證運行中不發(fā)生濕蒸汽泄漏到空預(yù)器換熱元件上。廣西供暖空氣預(yù)熱器在一些焚燒爐系統(tǒng)中用板式空氣預(yù)熱器提高系統(tǒng)效率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg"></div><p> 比例可根據(jù)具體情況調(diào)整）。6．反復(fù)循環(huán)清洗到推薦的清洗時間。隨著循環(huán)的進展和沉積物的溶解，反應(yīng)時產(chǎn)生的氣體也會增多，應(yīng)隨時通過放氣閥將多余的空氣排出。隨著空氣的排出，換熱器內(nèi)的空間會增大，可加入適當?shù)乃灰婚_始就注入大量的水，可能會造成水的溢出。7．循環(huán)中要定時檢查清洗劑的有效性?？梢允褂肞H試紙測定。如果溶液保持在PH值2‐3時，那么清洗劑仍然有效。如果清洗劑的PH值達到5‐6時，需要再添加適量清洗劑。**終溶液的PH值在2‐3時保持30分鐘沒有明顯變化，證明達到了清洗效果。注意：清洗劑可以回收后重復(fù)使用，排放會造成浪費。8．達到清洗時間后，回收清洗溶液。并用清水反復(fù)沖洗交換器，直到?jīng)_洗干凈至中性，用PH試紙測定PH值6~7。9．完成清洗后既可開機運行。也可以打壓試驗，看是否有泄漏現(xiàn)象。如果有泄漏，可以采用高分子復(fù)合材料進行修復(fù)保護。并且可以**延長設(shè)備的使用壽命。⒑設(shè)備穩(wěn)定后，記下當前的介質(zhì)過流量、工作壓力、換熱效率等數(shù)據(jù)。⒒比較清洗前和清洗后數(shù)值的變化，就可以計算出該企業(yè)每個小時所節(jié)省的電費、煤費等生產(chǎn)費用及提高的工作效率，這正是企業(yè)采用技術(shù)應(yīng)用的價值補償。</p><p> 底梁還通過底部軸承凳板支撐著空預(yù)器轉(zhuǎn)動部件的載荷。底梁還支撐端柱、底部扇形板和底部扇形板支板的重量。底部過渡煙風道的重量由底部結(jié)構(gòu)承受。底梁上的所有載荷分別由兩端傳遞到用戶鋼架上。7、頂部和底部三分倉結(jié)構(gòu)三分倉結(jié)構(gòu)包括三分倉扇形板和三分倉扇形板支板等，布置在轉(zhuǎn)子頂部和底部的空氣一側(cè)，內(nèi)緣對接在項、底結(jié)構(gòu)的扇形板和翼板上，外緣則焊接道支撐在轉(zhuǎn)子的外殼上的三分倉軸向密封板上。頂、底三分倉扇形板與三分倉軸向密封板一起，將空氣側(cè)分隔成一次風和二次風。8、過渡煙風道過渡煙風道位于轉(zhuǎn)子熱端和冷端的煙氣側(cè)和空氣側(cè)，其作用是將氣流導(dǎo)入和引出轉(zhuǎn)子。三分倉布置的風道又被進一步分為二次風道和一次風道。過渡煙風道連接在轉(zhuǎn)子外殼平板以及頂?shù)捉Y(jié)構(gòu)上。為保證空預(yù)器結(jié)構(gòu)合理受力，所有過渡煙風道內(nèi)均設(shè)置內(nèi)撐管。9、轉(zhuǎn)子驅(qū)動裝置轉(zhuǎn)子由中心驅(qū)動裝置驅(qū)動，驅(qū)動裝置直接與轉(zhuǎn)子頂部端軸相連。兩臺電機均能以正、反兩個方向驅(qū)動空預(yù)器，只有在空預(yù)器不帶負荷時才允許改變驅(qū)動方向。兩臺驅(qū)動電機與初級減速箱均為法蘭連接。終級減速箱通過輸出軸套直接套裝在驅(qū)動軸軸上并用鎖緊盤固定。終級減速箱一側(cè)裝有扭矩臂。板式空氣預(yù)熱器是上海板換機械設(shè)備有限公司主要產(chǎn)品之一。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><p> 防止空預(yù)器堵灰、腐蝕措施適應(yīng)范圍：空預(yù)器堵灰、腐蝕嚴重的鍋爐技術(shù)原理與要點：空預(yù)器綜合冷端溫度（空預(yù)器進口空氣溫度與煙氣出口平均溫度之和）對冷端結(jié)露和腐蝕、堵灰影響較大?？疹A(yù)器出口綜合冷端溫度如低于酸**溫度，空預(yù)器冷端很快就會積灰，一周內(nèi)就形成極難去除的板結(jié)垢。冷端溫度目標值應(yīng)根據(jù)“綜合冷端溫度與燃料含硫量變化曲線”確定，并根據(jù)燃用煤種性質(zhì)進行修正，除收到基全硫（St,ar）＜，燃用其他煤種原則上不要低于130℃。煙氣酸**主要受燃煤中的硫分、灰分、灰成分（特別是灰中Ca含量）、水分和發(fā)熱量的影響，灰分和灰中Ca含量越高，酸**越低；硫分和水分越高，酸**越高。由于不同酸**計算經(jīng)驗公式計算出的數(shù)值偏差較大，對燃用煤種相對穩(wěn)定的鍋爐，應(yīng)通過調(diào)整冷端溫度觀察空預(yù)器差壓變化趨勢等方法，確定該煤種對應(yīng)的目標綜合溫度控制值，并根據(jù)空預(yù)器煙氣側(cè)差壓變化情況及時提高空預(yù)器冷端溫度控制值。為提高控制精度和減輕運行人員調(diào)整工作量，空預(yù)器綜合冷端溫度控制目標值建議通過原煙氣SO2濃度、燃煤量、煙氣量等參數(shù)實時計算并參與自動調(diào)節(jié)。機組啟/停階段要注重冷端溫度控制。你知道板式空預(yù)器是什么？廣西供暖空氣預(yù)熱器</p><p style="text-indent:25px">板式空氣預(yù)熱器分為蓄熱式和間壁式。吉林空氣預(yù)熱器誠信企業(yè)</p><p> 兩種流體分別在管程和殼程內(nèi)流動，總體上是錯流流動，對數(shù)平均溫差修正系數(shù)小，而板式換熱器多是并流或逆流流動方式，其修正系數(shù)也通常在，此外，冷、熱流體在板式換熱器內(nèi)的流動平行于換熱面、無旁流，因此使得板式換熱器的末端溫差小，對水換熱可低于1℃，而管殼式換熱器一般為5℃fff.板式換熱器c.占地面積小。板式換熱器結(jié)構(gòu)緊湊。k.單位長度的壓力損失大；由于傳熱面之間的間隙較小，傳熱面上有凹凸，因此比傳統(tǒng)的光滑管的壓力損失大。l.不易結(jié)垢；由于內(nèi)部充分湍動，所以不易結(jié)垢，其結(jié)垢系數(shù)*為管殼式換熱器的1/3~1/，可能發(fā)生泄露；板式換熱器采用密封墊密封，工作壓力一般不宜超過，介質(zhì)溫度應(yīng)在低于250℃以下，否則有可能泄露。n.易堵塞；由于板片間通道很窄，一般只有2~5mm，當換熱介質(zhì)含有較大顆?；蚶w維物質(zhì)時，容易堵塞板間通道。板式換熱器基本分類編輯一般情況下，我們主要根據(jù)結(jié)構(gòu)來區(qū)分板式換熱器，也就是根據(jù)外形來區(qū)分，可分為四大類：①可拆卸板式換熱器（又叫帶密封墊片的板式換熱器）、②焊接板式換熱器、③螺旋板式換熱器、④板卷式換熱器（又叫蜂窩式換熱器）。其中。吉林空氣預(yù)熱器誠信企業(yè)</p><p style="text-indent:25px">上海板換機械設(shè)備有限公司創(chuàng)立于2005-11-30，總部位于上海市，是一家化工設(shè)備、環(huán)保設(shè)備及配件的制造加工及銷售，機械設(shè)備設(shè)計安裝（除特種設(shè)備外），在金山區(qū)山陽鎮(zhèn)山寧路99號內(nèi)從事自有房屋租賃?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】。主要生產(chǎn)制造的產(chǎn)品包括可拆卸板式熱交換器、寬通道全焊接板式熱交換器、煙氣冷凝器、板式空氣預(yù)熱器、TP焊接換熱器、板框式熱交換器等。的公司。上海板換作為化工設(shè)備、環(huán)保設(shè)備及配件的制造加工及銷售，機械設(shè)備設(shè)計安裝（除特種設(shè)備外），在金山區(qū)山陽鎮(zhèn)山寧路99號內(nèi)從事自有房屋租賃?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】。主要生產(chǎn)制造的產(chǎn)品包括可拆卸板式熱交換器、寬通道全焊接板式熱交換器、煙氣冷凝器、板式空氣預(yù)熱器、TP焊接換熱器、板框式熱交換器等。的品牌企業(yè)，為客戶提供質(zhì)量的板式換熱器機組，可拆式板式換熱器，焊接式板式換熱器，板式空氣預(yù)熱器。上海板換繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。上海板換始終關(guān)注自身，在風云變化的時代，我們對自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使我們在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1077505.html</p></div></div></div></div></div><div id="l8gp3sj" class="page-right twoColRt"><div id="8wtartf" class="box01 margin10 clearfix"><h3><a 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