江西小型空氣預熱器上海板換機械設備供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 板式換熱器是由一系列具有一定波紋形狀的金屬片疊裝而成的一種換熱器。各種板片之間形成薄矩形通道，通過板片進行熱量交換。板式換熱器是液—液、液—汽進行熱交換的理想設備。它具有換熱效率高、熱損失小、"><meta name="keywords" content="江西小型空氣預熱器,空氣預熱器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu 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href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_crsbje/">傳熱設備</a>?<a href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設備</a>?江西小型空氣預熱器上海板換機械設備供應</p><div id="cwoqn7n" class="leftbox clearfix"><h1>江西小型空氣預熱器上海板換機械設備供應</h1><div id="ujld8pr" class="proBig"><div id="3yjur73" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="iwdamoa" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="32ifxjq" 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)品關鍵詞：</span>江西小型空氣預熱器,空氣預熱器</p><p><span>***更新：</span>2020-08-18 05:16:43</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="yspr8dv" 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="oyf7w7q" class="page-proshow02"><p class="title">詳細說明</p><div id="3aqnugn" class="box"><p><p> 板式換熱器是由一系列具有一定波紋形狀的金屬片疊裝而成的一種換熱器。各種板片之間形成薄矩形通道，通過板片進行熱量交換。板式換熱器是液—液、液—汽進行熱交換的理想設備。它具有換熱效率高、熱損失小、結(jié)構緊湊輕巧、占地面積小、應用廣、使用壽命長等特點。在相同壓力損失情況下，其傳熱系數(shù)比管式換熱器高3-5倍，占地面積為管式換熱器的三分之一，熱回收率可高達90%以上板片和墊片的四個角孔形成了流體的分配管和匯集管，同時又合理地將冷熱流體分開，使其分別在每塊板片兩側(cè)的流道中流動，通過板片進行熱交換。[3]板式換熱器的優(yōu)化設計計算，就是在已知溫差比NTUE的條件下，合理地確定其型號、流程和傳熱面積，使NTUp等于NTUE，江西小型空氣預熱器。[4]板式換熱器基本組成結(jié)構：⒈板式換熱器板片和板式換熱器密封墊片⒉固定壓緊板⒊活動壓緊板⒋夾緊螺栓⒌上導桿⒍下導桿⒎后立柱板式換熱器特點編輯（板式換熱器與管殼式換熱器的比較）a.傳熱系數(shù)高；由于不同的波紋板相互倒置，構成復雜的流道，使流體在波紋板間流道內(nèi)呈旋轉(zhuǎn)三維流動，能在較低的雷諾數(shù)（一般Re=50~200）下產(chǎn)生紊流，所以傳熱系數(shù)高，一般認為是管殼式的3~5倍。[2]b，江西小型空氣預熱器，江西小型空氣預熱器.對數(shù)平均溫差大，末端溫差小。在管殼式換熱器中。板式空氣預熱器柱狀平板適用于氣體雜質(zhì)較多或工藝清洗要求較高的場合。江西小型空氣預熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西小型空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg"></div><p> 供熱溫度不能滿足要求產(chǎn)生原因：①一次側(cè)介質(zhì)流量不足，導致熱側(cè)溫差大，壓降小。②冷側(cè)溫度低，并且冷、熱末端溫度低。③并聯(lián)運行的多臺板式換熱器流量分配不均。④換熱器內(nèi)部結(jié)垢嚴重。處理方法：①增加熱源的流量或加大熱源介質(zhì)管路直徑。②平衡并聯(lián)運行的多臺板式換熱器的流量。③拆開板式換熱器清洗板片表面結(jié)垢。[6]板式換熱器主要控制參數(shù)編輯板水加熱器的主要控制參數(shù)為水加熱器的單板換熱面積、總換熱面積、熱水產(chǎn)量、換熱量、傳熱系數(shù)K、設計壓力、工作壓力、熱媒參數(shù)等。板式換熱器產(chǎn)品選用要點編輯⒈板式換熱器選用控制參數(shù)為換熱器材質(zhì)、工作壓力、設計溫度等。⒉選用換熱器時，應盡量使換熱系數(shù)小的一側(cè)得到大的流速，并且盡量使兩流體換熱面兩側(cè)的換熱系數(shù)相等或相近，提高傳熱系數(shù)。經(jīng)換熱器加熱的流體溫度應比換熱器出口壓力下的飽和溫度低10℃，且應低于二次水所用水泵的工作溫度。⒊含有泥沙臟物的流體宜經(jīng)過過濾后進入換熱器。⒋選用板式換熱器時，溫差較小側(cè)流體的接口處流速不宜過大，應能滿足壓力降的要求。⒌對于流量大允許壓力降小的情況應選用阻力小的板型，反之，選用阻力大的板型。⒍根據(jù)流體壓力和溫度情況選用可拆卸式或電焊式。河南供暖空氣預熱器板式空氣預熱器不易積灰結(jié)垢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西小型空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><p> 在《火力發(fā)電機節(jié)能降耗技術導則》、《300MW鍋爐及輔機節(jié)能降耗技術導則》和《燃煤電廠節(jié)能降耗技術推廣應用目錄》推薦的相關技術基礎上，對空預器密封治理的相關技術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：類似柔性密封技術，在徑向隔板原徑向密封片的基礎上，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）。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。 </p><p> 上海板換機械設備有限公司是專業(yè)從事板式熱交換器及其成套裝置設計、制造、安裝和服務的中德合資企業(yè)。板式空氣預熱器是一種節(jié)能環(huán)保設備，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，整機采用積木式設計，組合方式靈活多變，結(jié)構適應性強，特有的空氣膜TM技術能夠有效解決**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，從而保證設備壽命，而且可采用高低溫分級設計，不同溫度段可使用不同材料。板式空氣預熱器分為蓄熱式和間壁式。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西小型空氣預熱器,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><p> 技術領域本實用新型涉及電站鍋爐空預器運行安全技術領域，特別涉及一種有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)。背景技術：目前，部分燃煤鍋爐排煙溫度低于設計值，導致空氣預熱器冷端綜合溫度降低、***氫銨腐蝕及堵塞加劇、煙氣余熱的能級降低、引風機電耗增大等問題。尤其針對裝設有mggh系統(tǒng)的機組，單純利用空氣預熱器出口的煙氣余熱，不足以將脫硫塔出口的煙氣溫度提升至設計值，需另外投入大量的輔助蒸汽來維持煙囪入口煙氣溫度。（三）技術實現(xiàn)要素：本實用新型為了彌補現(xiàn)有技術的不足，提供了一種結(jié)構簡單、設計合理的有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)。本實用新型是通過如下技術方案實現(xiàn)的：一種有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)，包括安裝在空氣預熱器出口至mggh煙氣冷卻器進口煙道之間的前置煙冷器，用來吸收煙氣余熱；安裝在送風機出口冷風道內(nèi)的蒸汽暖風器，用來加熱鍋爐送風；安裝在蒸汽暖風器出口至空氣預熱器入口風道之間的水媒式暖風器，用來進一步提高鍋爐送風溫度。本實用新型采用前置煙冷器聯(lián)合水媒式暖風器和蒸汽暖風器共同加熱鍋爐送風。蒸汽暖風器采用旋轉(zhuǎn)式，可根據(jù)環(huán)境溫度和機組負荷進行調(diào)整，減少風機電耗。前置煙冷器回收部分煙氣余熱。在一些焚燒爐系統(tǒng)中用板式空氣預熱器提高系統(tǒng)效率。河南供暖空氣預熱器</p><p style="text-indent:25px">專業(yè)生產(chǎn)板式空氣預熱器廠家。江西小型空氣預熱器</p><p> 從而造成NH3泄漏以及NOx脫除不完全，使其易被氧化為SO3。SO3在空預器冷段(溫度177～232℃)濃縮成酸霧，腐蝕受熱面。在SCR反應器出口SO3與逃逸的氨反應生成***氫氨。在SO2氧化率的控制方面，主要取決于催化劑V2O5中的含量，釩的擔載量不能太高，通?？刂圃?%左右可減少SO2氧化。此外，采用提高催化劑活性組分。如WO3)含量，亦可***SO2氧化。這一點在脫硝系統(tǒng)安裝完成后，運行中基本沒有調(diào)節(jié)手段。煙氣流場優(yōu)化煙氣流場的不均勻?qū)е旅撓跸到y(tǒng)出口氨逃逸率局部超標，加快空預器傳熱元件上***氫氨的沉積。在氨逃逸量的控制方面可利用計算流體力學軟件優(yōu)化設計，對SCR脫硝裝置入口煙氣流量和流速分布進行模擬，確定導流葉片的類型、數(shù)量和位置，同時，在運行中針對經(jīng)常的運行工況進行調(diào)勻試驗。以使入口煙氣流速、溫度和濃度均勻；同時調(diào)整噴氨格柵各個噴口，使NH3混合均勻，保證脫硝出口的NOx含量和NH3均勻，避免局部氨逃逸量超標，**終減少氨逃逸量。運行中，由于機組負荷變化較大，雖然經(jīng)過調(diào)勻試驗，但無法保證在所有的工況下煙氣流場均穩(wěn)定均勻。因此，必然發(fā)生氨逃逸率局部偏大，長期低負荷運行將造成空預器堵塞的可能性加大。江西小型空氣預熱器</p><p style="text-indent:25px">上海板換機械設備有限公司注冊資金5000萬元-1億元，是一家擁有101~300人***員工的企業(yè)。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下[ "板式換熱器機組", "可拆式板式換熱器", "焊接式板式換熱器", "板式空氣預熱器" ]深受客戶的喜愛。公司注重以質(zhì)量為中心，以服務為理念，秉持誠信為本的理念，打造機械及行業(yè)設備質(zhì)量品牌。公司憑借深厚技術支持，年營業(yè)額度達到1億元以上，并與多家行業(yè)**公司建立了緊密的合作關系。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/952789.html</p></div></div></div></div></div><div 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