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href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設(shè)備</a>?山西節(jié)能空氣預(yù)熱器誠(chéng)信經(jīng)營(yíng) 上海板換機(jī)械設(shè)備供應(yīng)</p><div id="waheamo" class="leftbox clearfix"><h1>山西節(jié)能空氣預(yù)熱器誠(chéng)信經(jīng)營(yíng) 上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="ajldfcz" class="proBig"><div id="vuwo3fc" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="d3s3ace" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qnfqfby" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>山西節(jié)能空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-10 03:05:59</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="r7b98eb" 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?jiān)浦?/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(yáng)鎮(zhèn)山寧路99號(hào)</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="7cjli3l" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3myqcov" class="box"><p><p> 一般各自廠家根據(jù)自己的板型都有自己的選型軟件。國(guó)際上通用的軟件有HTRI，HTFS等。通用的計(jì)算軟件公開的很少，國(guó)內(nèi)一些網(wǎng)站如換熱支持網(wǎng)站提供了提供了板式換熱器的在線計(jì)算軟件，可供參考使用。板式換熱器常見故障編輯外漏主要表現(xiàn)為滲漏（量不大，水滴不連續(xù)）和泄漏（量較大，水滴連續(xù)）。外漏出現(xiàn)的主要部位為板片與板片之間的密封處、板片二道密封泄漏槽部位以及端部板片與壓緊板內(nèi)側(cè)。串液主要特征為壓力較高一側(cè)的介質(zhì)串入壓力較低一側(cè)的介質(zhì)中，系統(tǒng)中會(huì)出現(xiàn)壓力和溫度的異常。如果介質(zhì)具有腐蝕性，還可能導(dǎo)致板式換熱器密封墊片的腐蝕。串液通常發(fā)生在導(dǎo)流區(qū)域或者二道密封區(qū)域處。壓降大介質(zhì)進(jìn)、出口壓降超過設(shè)計(jì)要求，甚至高出設(shè)計(jì)值許多倍，嚴(yán)重影響系統(tǒng)對(duì)流量和溫度的要求。在供暖系統(tǒng)中，若熱側(cè)壓降過大，則一次側(cè)流量將嚴(yán)重不足，即熱源不夠，導(dǎo)致二次側(cè)出溫度不能滿足要求。供熱溫度不能滿足要求主要特征是出口溫度偏低，達(dá)不到設(shè)計(jì)要求，山西節(jié)能空氣預(yù)熱器。面積相同換熱量的板式換熱器*為管殼式換熱器的1/5。3、容易清洗拆裝方便：板式換熱器靠夾緊螺栓將夾固板板片夾緊，因此拆裝方便，山西節(jié)能空氣預(yù)熱器，隨時(shí)可以打開清洗，同時(shí)由于板面光潔，山西節(jié)能空氣預(yù)熱器，湍流程度高，不易結(jié)垢。板式空氣預(yù)熱器分為蓄熱式和間壁式。山西節(jié)能空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西節(jié)能空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg"></div><p style="text-indent:25px"> 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(yán)重的鍋爐技術(shù)原理與要點(diǎn)：空預(yù)器綜合冷端溫度（空預(yù)器進(jìn)口空氣溫度與煙氣出口平均溫度之和）對(duì)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(huì)積灰，一周內(nèi)就形成極難去除的板結(jié)垢。冷端溫度目標(biāo)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(jìn)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(jì)算經(jīng)驗(yàn)公式計(jì)算出的數(shù)值偏差較大，對(duì)燃用煤種相對(duì)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(shì)等方法，確定該煤種對(duì)應(yīng)的目標(biāo)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(shí)提高空預(yù)器冷端溫度控制值。為提高控制精度和減輕運(yùn)行人員調(diào)整工作量，空預(yù)器綜合冷端溫度控制目標(biāo)值建議通過原煙氣SO2濃度、燃煤量、煙氣量等參數(shù)實(shí)時(shí)計(jì)算并參與自動(dòng)調(diào)節(jié)。機(jī)組啟/停階段要注重冷端溫度控制。山西節(jié)能空氣預(yù)熱器板式空氣預(yù)熱器是一種冶金行業(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="山西節(jié)能空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410559414062/9489232.jpg"></div><p> 工業(yè)生產(chǎn)過程中會(huì)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?duì)人體有害的物質(zhì)。將乙二醇廢氣通入450~700℃溫度范圍的燃燒裝置中，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(yùn)行壓力通常在10kpa左右，因此設(shè)計(jì)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，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(jì)時(shí)應(yīng)注意兩臺(tái)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(jì)可以靈活控制設(shè)計(jì)流速及阻力損失；流場(chǎng)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(xiàng)目。 </p><p> 在選擇傳熱元件時(shí)，要考慮到用戶的實(shí)際情況，從設(shè)備長(zhǎng)期安全穩(wěn)定運(yùn)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(zhǎng)時(shí)間的運(yùn)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(jì)煤種，在燃料變化后，無法滿足機(jī)組經(jīng)濟(jì)、穩(wěn)定和安全運(yùn)行的需要。元件板型的選擇需同時(shí)考慮傳熱效果、流通阻力和堵灰可能三個(gè)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(yùn)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(dāng)燃料灰分變多，或用于SCR預(yù)熱器時(shí)，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(duì)矛盾，因?yàn)樘岣邠Q熱效果是通過加強(qiáng)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(shí)加大了流通阻力系數(shù)。板式空氣預(yù)熱器維修廠家有哪些？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西節(jié)能空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031093750/2889219.jpg"></div><p> 高爐煤氣是冶金聯(lián)合企業(yè)主要的副產(chǎn)廢氣，經(jīng)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(zhì)量環(huán)保能源，我國(guó)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(fēng)溫成為一個(gè)重要課題。高爐熱風(fēng)爐采用空氣、煤氣雙預(yù)熱是提高風(fēng)溫的有效途徑。燃燒單一高爐煤氣（熱值3369kJ/m3），不預(yù)熱時(shí)，其理論燃燒溫度只有1280℃；只預(yù)熱空氣到250℃時(shí)，其理論燃燒溫度提高到1330℃；而空氣、煤氣雙預(yù)熱到170℃時(shí)，能提高到1380℃。u工藝：利用300℃左右的煙氣分別預(yù)熱助燃空氣、高爐煤氣至約150℃。專業(yè)生產(chǎn)板式空氣預(yù)熱器廠家。安徽空氣預(yù)熱器的用途和特點(diǎn)</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。山西節(jié)能空氣預(yù)熱器</p><p> 按制造廠提供的夾緊尺寸重新夾緊設(shè)備，尺寸應(yīng)均勻一致，壓緊尺寸的偏差應(yīng)不大于±0．2N(mm)(N。為板片總數(shù)），兩壓緊板間的平行度應(yīng)保持在2mm以內(nèi)。②在外漏部位上做好標(biāo)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(duì)板片變形部位進(jìn)行修理或者更換板片。在沒有板片備件時(shí)可將變形部位板片暫時(shí)拆除后重新組裝使用。④重新組裝拆開的板片時(shí)，應(yīng)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(chǎn)生原因：①由于板材選擇不當(dāng)導(dǎo)致板片腐蝕產(chǎn)生裂紋或穿孔。②操作條件不符合設(shè)計(jì)要求。③板片冷沖壓成型后的殘余應(yīng)力和裝配中夾緊尺寸過小造成應(yīng)力腐蝕。④板片泄漏槽處有輕微滲漏，造成介質(zhì)中有害物質(zhì)（如C1）濃縮腐蝕板片。形成串液?，F(xiàn)場(chǎng)分析發(fā)現(xiàn)，系統(tǒng)運(yùn)行溫度、流量和濃度等工藝參數(shù)均超出設(shè)計(jì)條件，使用溫度遠(yuǎn)超出材料的適用范圍。采用飽和蒸汽作為一次側(cè)熱源的板式換熱器在運(yùn)行過程中容易發(fā)生板片腐蝕。導(dǎo)致產(chǎn)品串液。這是由于蒸汽溫度較高，設(shè)備運(yùn)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(jìn)行，冷凝殘液越聚越多，局部形成cl質(zhì)量濃度較高區(qū)域。山西節(jié)能空氣預(yù)熱器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2778297.html</p></div></div></div></div></div><div id="k8p9ubn" class="page-right twoColRt"><div id="n2smtq3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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