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href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_crsbje/">傳熱設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設(shè)備</a>?四川供暖空氣預(yù)熱器服務(wù)為先上海板換機械設(shè)備供應(yīng)</p><div id="mqxprzd" class="leftbox clearfix"><h1>四川供暖空氣預(yù)熱器服務(wù)為先上海板換機械設(shè)備供應(yīng)</h1><div id="sbdabii" class="proBig"><div id="q5a8w5n" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bbe0njc" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qazudax" 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>四川供暖空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2020-12-27 13:09:49</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="fr1ke8x" 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="xbusot4" class="page-proshow02"><p class="title">詳細說明</p><div id="jf754fu" class="box"><p><p> 在《火力發(fā)電機節(jié)能降耗技術(shù)導(dǎo)則》、《300MW鍋爐及輔機節(jié)能降耗技術(shù)導(dǎo)則》和《燃煤電廠節(jié)能降耗技術(shù)推廣應(yīng)用目錄》推薦的相關(guān)技術(shù)基礎(chǔ)上，對空預(yù)器密封治理的相關(guān)技術(shù)和注意事項進行介紹：（1）密封方式簡介1)雙道密封改造：將轉(zhuǎn)子隔倉數(shù)增加一倍，通常由24分倉改為48分倉，加寬扇形板，形成雙密封面，漏風率可降低30%，通常漏風率低于6%。不足之處是風煙阻力略有增加，轉(zhuǎn)子重量增加；如將原傳熱元件拆包切割，易造成傳熱面積下降和損元件。鶴崗電廠采用了該方案。2）三道密封改造：在原雙密封改造基礎(chǔ)上，進一步增加轉(zhuǎn)子隔倉，加寬扇形板，形成三道密封面，漏風率可在雙密封基礎(chǔ)上進一步下降12%。但造成隔倉過密，傳熱元件偏小，風煙阻力上升10%左右。目前部分一次風壓頭較高的新機組采用。3）拖拽式軟密封技術(shù)：類似柔性密封技術(shù)，四川供暖空氣預(yù)熱器，在徑向隔板原徑向密封片的基礎(chǔ)上，四川供暖空氣預(yù)熱器，再增加一道較薄的有一定彈性和折角較大的密封片，以增加密封道數(shù)，并允許密封片與扇形板有一定接觸。在投運初期能有效降低漏風率（可至4%左右），四川供暖空氣預(yù)熱器。不足之處：只在間隙小于10mm時有效，大機組無LCS（間隙自調(diào)裝置）時熱端效果不明顯；運行時間長后接觸式密封片易磨損失效。哪里生產(chǎn)板式空氣預(yù)熱器？四川供暖空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川供暖空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><p> 與水媒式暖風器組成閉式循環(huán)系統(tǒng)?？諝忸A(yù)熱器進風溫度的提高使排煙溫度升高，一方面使前置煙冷器傳熱溫差增加，更有效回收低溫煙氣余熱；另一方面則較大幅度提升空氣預(yù)熱器的冷端綜合溫度，有效緩解空氣預(yù)熱器***氫銨堵塞和腐蝕；同時mggh煙氣冷卻器入口煙溫的提高減少了mggh系統(tǒng)的蒸汽消耗量，降低機組供電煤耗。本實用新型的更優(yōu)技術(shù)方案為：所述蒸汽暖風器的進口上連接有蒸汽管，且其出口上連接有疏水管。所述蒸汽管上安裝有電動調(diào)節(jié)閥，疏水管上安裝有疏水閘閥；通過蒸汽暖風器對冷空氣做初步加熱。所述前置煙冷器的進水母管上安裝有循環(huán)水泵，為前置煙冷器和水媒式暖風器之間的交換水循環(huán)運行提供動力。所述前置煙冷器出口的煙道內(nèi)沿煙氣流動方向依次安裝有mggh煙氣冷卻器、電除塵器、引風機、吸收塔、煙氣再熱器和煙囪；且煙氣再熱器和mggh煙氣冷卻器之間連接有熱媒加熱器和安裝循環(huán)水泵的管道，實現(xiàn)mggh系統(tǒng)的運行。四川供暖空氣預(yù)熱器板式空氣預(yù)熱器使用在鋼鐵行業(yè)的煉鋼爐。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川供暖空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg"></div><p> 對于因氨量瞬間過大造成***氫氨堵塞空預(yù)器情況時有發(fā)生，為了預(yù)防空預(yù)器及風煙系統(tǒng)的安全、經(jīng)濟運行，應(yīng)該制定定期工作，各單元機組均應(yīng)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(yù)器升溫工作，A、B兩側(cè)分別進行。減小送風量（或增大引風機開度）以提高該側(cè)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(yīng)升高至230℃更佳）。每年10月底至4月初暖風器轉(zhuǎn)入運位后，升溫期間利用該側(cè)暖風器，根據(jù)煙溫變化情況和預(yù)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(yù)器壓差增大方法及注意事項鍋爐運行中，預(yù)熱器阻力超過，應(yīng)開始執(zhí)行以下措施：投入該側(cè)暖風器，根據(jù)煙溫變化情況和預(yù)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(cè)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(yīng)升高至230℃更佳）。加強預(yù)熱器蒸汽吹灰頻次（投入空預(yù)器蒸汽連續(xù)吹灰），直至阻力下降至（75%以上負荷）以下。</p><p> 在選擇傳熱元件時，要考慮到用戶的實際情況，從設(shè)備長期安全穩(wěn)定運行的角度出發(fā)，適應(yīng)煤種在一定范圍內(nèi)的變化，確保在使用過程中不堵灰，保持較低的排煙溫度，保證在長時間的運行過程中，鍋爐的效率保持在較高水平。而不能*考慮單一設(shè)計煤種，在燃料變化后，無法滿足機組經(jīng)濟、穩(wěn)定和安全運行的需要。元件板型的選擇需同時考慮傳熱效果、流通阻力和堵灰可能三個因素。采用傳熱效果好的傳熱元件能降**造成本，但是不一定流通阻力小或耐堵灰，造成運行成本上升。例如某公司在預(yù)熱器冷段采用HS7、HS8等DU系列波形元件，雖然預(yù)熱器轉(zhuǎn)子重量變輕，但是當燃料灰分變多，或用于SCR預(yù)熱器時，很容易造成堵灰，使阻力上升。傳熱效果和流通阻力往往構(gòu)成一對矛盾，因為提高換熱效果是通過加強氣流通道的局部紊流狀況，即加大換熱表面波紋密度或傾斜角，但這種方式也同時加大了流通阻力系數(shù)。板式空氣預(yù)熱器是一種鋼鐵行業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川供暖空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.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。板式空氣預(yù)熱器是一種化工行業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。黑龍江本地空氣預(yù)熱器</p><p style="text-indent:25px">板式空氣預(yù)熱器的作用是提高燃燒空氣溫度。四川供暖空氣預(yù)熱器</p><p> 上海板換機械設(shè)備有限公司是專業(yè)從事板式熱交換器及其成套裝置設(shè)計、制造、安裝和服務(wù)的中德合資企業(yè)。板式空氣預(yù)熱器是一種節(jié)能環(huán)保設(shè)備，使用平板或波紋板，板片周邊通過焊接或機械固定形成板束，整機采用積木式設(shè)計，組合方式靈活多變，結(jié)構(gòu)適應(yīng)性強，特有的空氣膜TM技術(shù)能夠有效解決**腐蝕問題，適用于煉油、化工、鋼鐵、冶金、電力工業(yè)等行業(yè)?？蓪崿F(xiàn)模塊化、組合化、大型化，空間尺寸調(diào)節(jié)靈活板式換熱元件的傳熱系數(shù)比管式傳熱元件高1-3倍，且可根據(jù)冷、熱介質(zhì)換熱前后的體積變化，采用流道間距與流動長度的優(yōu)化組合，實現(xiàn)傳熱性能與壓降的比較好化設(shè)計換熱流道內(nèi)無死區(qū)，不易積灰，即便積灰也便于清洗，且可做到在線清洗對不同介質(zhì)、工況可針對性的選擇適用材料，從而保證設(shè)備壽命，而且可采用高低溫分級設(shè)計，不同溫度段可使用不同材料。四川供暖空氣預(yù)熱器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2587715.html</p></div></div></div></div></div><div id="dgihb0a" class="page-right twoColRt"><div id="ponhrch" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="c91zhye" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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