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href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="fpmeokw" class="twoCol"><div id="73moqdq" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)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>?山西空氣預(yù)熱器制造商服務(wù)為先上海板換機(jī)械設(shè)備供應(yīng)</p><div id="qkwtq7e" class="leftbox clearfix"><h1>山西空氣預(yù)熱器制造商服務(wù)為先上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="rqczbqv" class="proBig"><div id="gan7szy" 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="azrjapr" 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="jpm8u22" 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>山西空氣預(yù)熱器制造商,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-08 11:09:15</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="2d2obik" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海板換機(jī)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(jī): </span>021-57247534</p><p><span>地址: </span>山陽鎮(zhèn)山寧路99號</p><p>[當(dāng)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="qfcz8jg" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3p9jl7x" class="box"><p><p> 工業(yè)生產(chǎn)過程中會產(chǎn)生大量的廢氣以及乙二醇、一氧化碳、二氧化硫、碳?xì)浠衔锏葘θ梭w有害的物質(zhì)。將乙二醇廢氣通入450~700℃溫度范圍的燃燒裝置中，山西空氣預(yù)熱器制造商，將廢氣充分燃燒，以達(dá)到廢氣外排的標(biāo)準(zhǔn)。為充分利用系統(tǒng)中煙氣的余熱，焚燒爐前設(shè)有煙氣-廢氣換熱器，用以回收高溫?zé)煔鉄崮埽A(yù)熱廢氣溫度。由于煤氣的特殊性質(zhì)，換熱器必須保證0泄露；煤氣預(yù)熱器運行壓力通常在10kpa左右，因此設(shè)計壓力一般為20kpa；高爐煤氣含硫量較低，一般煙氣酸**溫度在100℃左右，山西空氣預(yù)熱器制造商，山西空氣預(yù)熱器制造商，換熱器低溫段需使用空氣膜技術(shù)提升壁溫，避免可能的酸**腐蝕；設(shè)計時應(yīng)注意兩臺換熱器熱側(cè)阻力分配。平板板型可以使用空氣膜技術(shù)，提高系統(tǒng)安全性；平板定距柱式設(shè)計可以靈活控制設(shè)計流速及阻力損失；流場分布均勻，不易積灰結(jié)垢，便于清潔維護(hù)；占地面積小，尤其適合安裝空間有限的改造項目。板式空氣預(yù)熱器使用在鋼鐵行業(yè)的煉鋼爐。山西空氣預(yù)熱器制造商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西空氣預(yù)熱器制造商,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><p> 板式換熱器處理方法：編輯①換熱器流道中的臟物或板片結(jié)垢，對于新運行的系統(tǒng)，根據(jù)實際情況每周清洗一次。清洗板片表面水垢（主要指CaCO3）時，選用含氨基磺酸溶液或含烏洛托品、苯胺、硝酸溶液作為清洗液，清洗溫度4O～6O℃。不拆卸設(shè)備化學(xué)浸泡清洗時，要打開換熱器冷介質(zhì)進(jìn)、出口，或安裝設(shè)備時在介質(zhì)進(jìn)、出口接管上安裝DN25清洗口，將配好的清洗液注入設(shè)備中，浸泡后用清水清洗干凈殘留酸液，使pH≥7。拆開清洗時，將板片在清洗液中浸泡30min。然后用軟刷輕刷結(jié)垢，用清水清洗干凈。清洗過程中應(yīng)避免損傷板片與橡膠墊。若采用不拆卸機(jī)械反沖洗方法，應(yīng)事先在介質(zhì)進(jìn)、出口管路上接一管口，將設(shè)備與機(jī)械清洗車連接，把清洗液按介質(zhì)流動的反方向注入設(shè)備，循環(huán)清洗時間10～15min，介質(zhì)流速控制在～m/s。再用清水循環(huán)幾遍，使清水中Cl質(zhì)量濃度控制在25mg/I以下。②二次循環(huán)水比較好采用經(jīng)過軟化處理后的軟水。一般要求水中懸浮物質(zhì)量濃度不大于5mg/L、雜質(zhì)直徑不大于3mm、pH≥7。當(dāng)水溫不大于95℃時，Ca、Mg濃度應(yīng)不大于2mmol/L；當(dāng)水溫大于95℃時，Ca、Mg濃度應(yīng)不大于0．3mmol/L、溶解氧質(zhì)量濃度應(yīng)不大于0．1mg/L。③對于集中供熱系統(tǒng)，可以采用一次向二次補(bǔ)水的方法。山西空氣預(yù)熱器制造商板式空氣預(yù)熱器是一種環(huán)保設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西空氣預(yù)熱器制造商,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg"></div><p> 其反應(yīng)如下：NH3+SO3+H2O＝NH4HSO4(4)2NH3+SO3+H2O＝(NH4)2SO4(5)***氫氨形成的影響因素運行經(jīng)驗和熱力學(xué)分析都表明，***氫氨的形成取決于反應(yīng)物的濃度和它們的比例。***氫氨的形成量隨NH3濃度的增加而增加，高SO3/NH3摩爾比將促進(jìn)***氫氨的形成及其在空預(yù)器上的沉積。***氫氨的形成同時依賴于溫度。當(dāng)煙氣溫度略低于***氫氨的初始形成溫度時，***氫氨即開始形成。當(dāng)煙氣溫度下降到低于***氫氨形成的初始溫度25℃時，***氫氨形成反應(yīng)可完成95%。***氫氨的確切形成區(qū)域取決于初始形成溫度和空預(yù)器溫度，并在空預(yù)器軸向上下波動。NH3/SO3摩爾比***氫氨對***氨的形成起到促進(jìn)的作用，同時***氨也能對***氫氨的形成起到一定的促進(jìn)作用。當(dāng)NH3/SO3摩爾比大于2時，主要形成***氨，在空預(yù)器的運行溫度范圍***氨為干燥固體粉末，對空預(yù)器影響很小，而***氫氨是一種粘性很強(qiáng)的物質(zhì)，很容易在空預(yù)器沉積，并促使大量飛灰附著于空預(yù)器，從而影響其傳熱性能，增大其阻力。因此，正常氨逃逸率按2μL/L，入爐煤硫份，SO3轉(zhuǎn)化率按1%考慮，煙氣中的SO3含量約為μL/L，NH3/SO3摩爾比*為，即摩爾比遠(yuǎn)小于2，因此，隨逃逸的氨和入爐煤硫份的增加，空預(yù)器中沉積的***氫氨也增加。</p><p> 可選用搪瓷鍍層換熱元件。在運行維護(hù)過程中，為減少***氫氨對機(jī)組安全運行的影響，應(yīng)從以下幾方面開展工作：（1）嚴(yán)格控制氨逃逸率。應(yīng)通過脫硝性能試驗，對脫硝出口進(jìn)行全斷面氨逃逸率檢測，比對在線儀表，保證在線儀表準(zhǔn)確反映實際情況。（2）建立脫硝系統(tǒng)定期試驗制度，包括流場均勻性試驗，催化劑活性試驗。特別是流場試驗。在催化劑運行2至3年后，催化劑活性必然降低。同時，因催化劑磨損、孔等原因，造成局部氨逃逸率超標(biāo)，將進(jìn)一步加快空預(yù)器冷段***氫氨的沉積。通過流場均勻性試驗，能及時掌握催化劑局部失效引起氨逃逸率局部增加的狀況，通過調(diào)整噴氨流量分布，避免氨逃逸率局部超標(biāo)。（3）控制入爐煤硫份。由于運行中煙氣流經(jīng)催化劑后，煙氣中SO2氧化為SO3的比率基本不變，因而，隨入爐煤硫份的增加，***氫氨的生成物增加，只能通過控制入爐煤中的硫份來控制***氫氨。（4）加強(qiáng)空預(yù)器吹灰，并及時進(jìn)行空預(yù)器清理工作。由于一旦發(fā)生***氫氨沉積，空預(yù)器堵塞發(fā)展較快，因此，要充分利用停爐機(jī)會檢查空預(yù)器堵塞情況，一旦發(fā)現(xiàn)有***氫氨沉積，應(yīng)立即采取措施，將空預(yù)器傳熱元件清理干凈。板式空氣預(yù)熱器怎么維修？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西空氣預(yù)熱器制造商,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031093750/2889219.jpg"></div><p> 加寬扇形板，形成雙密封面，漏風(fēng)率可降低30%，通常漏風(fēng)率低于6%。不足之處是風(fēng)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(jìn)一步增加轉(zhuǎn)子隔倉，加寬扇形板，形成三道密封面，漏風(fēng)率可在雙密封基礎(chǔ)上進(jìn)一步下降12%。但造成隔倉過密，傳熱元件偏小，風(fēng)煙阻力上升10%左右。目前部分一次風(fēng)壓頭較高的新機(jī)組采用。3）拖拽式軟密封技術(shù)：類似柔性密封技術(shù)，在徑向隔板原徑向密封片的基礎(chǔ)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(fēng)率（可至4%左右）。不足之處：只在間隙小于10mm時有效，大機(jī)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。加壓密封技術(shù)：通常用于GGH，即GGH的低泄漏風(fēng)系統(tǒng)。綜合性密封技術(shù)：部分廠家綜合以上多種技術(shù)的特點，對空預(yù)器徑向、軸向、周向（旁路）密封和相關(guān)靜密封進(jìn)行針對性設(shè)計，實施漏風(fēng)率控制；1）運行調(diào)節(jié)及維護(hù)注意事項1）除精心控制好徑向、軸向密封間隙外，還要注意控制好密封板的端部密封。板式空氣預(yù)熱器適合安裝空間有限的改造項目。貴州空氣預(yù)熱器電話</p><p style="text-indent:25px">板式空氣預(yù)熱器長什么樣？山西空氣預(yù)熱器制造商</p><p> 空預(yù)器吹灰壓力、疏水溫度，脫硝催化劑出口氨逃逸等表計的檢測維護(hù)，保證指示準(zhǔn)確?？疹A(yù)器檢修中要通過校直大軸、修復(fù)密封片、利用新型密封技術(shù)等降低空預(yù)器漏風(fēng)率，提高空預(yù)器出口排煙溫度。C級及以上計劃檢修時，根據(jù)空預(yù)器腐蝕、積灰情況把蓄熱元件拆包徹底清洗，冷、熱端蓄熱元件復(fù)裝時調(diào)換位置使用?？疹A(yù)器堵塞嚴(yán)重的，要分析蓄熱元件高度和直徑設(shè)計是否合理，必要時進(jìn)行大通道蓄熱元件換型改造（改成L型直通道），或進(jìn)行空預(yù)器增加直徑改造。投用暖風(fēng)器或熱風(fēng)再循環(huán)系統(tǒng)，將對機(jī)組經(jīng)濟(jì)性產(chǎn)生不利影響，機(jī)組煤耗將上升1-3g/kWh，因此，在冷端綜合溫度（或冷端平均溫度）滿足要求的情況下，應(yīng)及時停用暖風(fēng)器或熱風(fēng)再循環(huán)系統(tǒng)，防止過量投入造成能耗增加。空預(yù)器在線高壓水沖洗案例：2012年11月，珞璜電廠在#5爐（600MW）運行中成功進(jìn)行了空預(yù)器冷端傳元熱件在線高壓水沖洗，取得成效。在《火力發(fā)電機(jī)節(jié)能降耗技術(shù)導(dǎo)則》、《300MW鍋爐及輔機(jī)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(jìn)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。山西空氣預(yù)熱器制造商</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2758288.html</p></div></div></div></div></div><div id="gv883d3" class="page-right twoColRt"><div id="mfhjgsk" class="box01 margin10 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