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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>?江蘇板式空氣預(yù)熱器來電咨詢上海板換機(jī)械設(shè)備供應(yīng)</p><div id="t3s4stk" class="leftbox clearfix"><h1>江蘇板式空氣預(yù)熱器來電咨詢上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="pykohxe" class="proBig"><div id="fxjfwsu" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220411145419922/7208407.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7izard8" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220411145419922/7208407.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tgsolxq" 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>江蘇板式空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2020-12-30 13:09:28</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7abmnea" 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="jxjkb7k" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="gjqh3gt" class="box"><p><p> 同一單元兩臺機(jī)組不可同時進(jìn)行升溫工作，20日完不成，可以由21日中班完成，月末上報績效分爐分AB側(cè)統(tǒng)計。加強(qiáng)監(jiān)視煙溫測點(diǎn)，尤其在負(fù)荷變化及啟停磨期間，確保排煙溫度測點(diǎn)比較高點(diǎn)不得超過170℃。調(diào)節(jié)送吸風(fēng)量應(yīng)緩慢進(jìn)行，溫升5~10℃暫停調(diào)節(jié)穩(wěn)定20分鐘以上，方可繼續(xù)升溫。注意調(diào)節(jié)煙溫變化速率。加強(qiáng)對空預(yù)器電流監(jiān)測，預(yù)熱器電流一般不得超過正常值5A以上，否則穩(wěn)定煙溫待空預(yù)器受熱均勻。用于在沖洗過程中監(jiān)視煙道中的積灰和排污情況。關(guān)閉高壓水管路中通往#1機(jī)組的閥門，打開通往#2機(jī)組的閥門和通往#2機(jī)A側(cè)的閥門，江蘇板式空氣預(yù)熱器，關(guān)閉通往#2機(jī)B側(cè)的閥門關(guān)閉。還要關(guān)閉A側(cè)底部蒸汽進(jìn)口管道上的閥門，防止高壓水沖洗時將蒸汽帶入。高壓水泵可遠(yuǎn)方或就地操作，以下*以就地操作為例。在就地控制柜上啟動高壓水泵（#1和#2機(jī)組共用一臺高壓水泵），就地控制柜帶有邏輯控制功能，江蘇板式空氣預(yù)熱器，在程控作用下，水泵啟動40-60S后氣動卸荷閥自動關(guān)閉，然后人工調(diào)節(jié)帶有紅色手柄的調(diào)壓閥，將水泵緩慢升壓至20MPa。吹灰器可遠(yuǎn)方或就地操作，江蘇板式空氣預(yù)熱器，以下*以就地操作為例。在吹灰器就地控制箱上將密封風(fēng)機(jī)停止，選擇“高壓水在線吹掃”并啟動，就地控制箱柜帶有邏輯控制功能，在程控作用下。你知道板式空預(yù)器是什么？江蘇板式空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇板式空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220411145419922/7208407.jpg"></div><p> 上海板換機(jī)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)。公司致力于為國內(nèi)外石油/天然氣行業(yè)、船舶行業(yè)、暖通空調(diào)行業(yè)、化工行業(yè)、食品醫(yī)藥行業(yè)、電力行業(yè)、生物能源行業(yè)、冶金行業(yè)、機(jī)械制造行業(yè)、造紙行業(yè)等客戶提供***的板式熱交換設(shè)備。 </p> <p> 公司現(xiàn)有16大系列、20余品種的熱交換設(shè)備，主要產(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。公司立足上海，服務(wù)全球，在全球設(shè)立多處服務(wù)網(wǎng)絡(luò)，以滿足客戶需求。河北石化空氣預(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="江蘇板式空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg"></div><p> 隨國家節(jié)能減排工作的不斷深入，新版《火電廠大氣污染物排放標(biāo)準(zhǔn)》（GB13223-2011）要求，NOx排放限值為100mg/Nm3?，F(xiàn)在燃煤鍋爐均已安裝脫硝系統(tǒng)，其中絕大部分采用SCR脫硝方式，SCR脫硝方式運(yùn)行中必然發(fā)生部分氨逃逸。2013年11月份起，空預(yù)器差壓逐漸增大，至2014年3月份，在負(fù)荷到270MW時，空預(yù)器差壓比較大達(dá)：從空預(yù)器差壓發(fā)展可看出，堵塞具有如下特點(diǎn)：（1）A空預(yù)器堵塞情況較輕，B空預(yù)器堵塞較嚴(yán)重；（2）堵塞發(fā)展很快，2013年11月20日，負(fù)荷280MW時，A、B側(cè)空預(yù)器煙氣差壓*分別為、，到4個月后，2014年3月27日煙氣差壓已達(dá)到。其中特別是B側(cè)空預(yù)器，堵塞明顯嚴(yán)重，造成B側(cè)煙氣流量減少。因而A引風(fēng)機(jī)煙氣通流量加大，電流明顯上升，由134A上升到160A。（3）B空預(yù)器旋轉(zhuǎn)一圈的情況下，差壓呈周期性變化，比較大達(dá)kPa，**小達(dá)kPa，說明B空預(yù)器局部堵塞嚴(yán)重。即便以**小值比較，堵塞現(xiàn)象也較為明顯?？疹A(yù)器解體后堵塞情況2014年4月大修期間，解體空預(yù)器蓄熱元件，發(fā)現(xiàn)堵塞情況主要集中冷段蓄熱元件約350mm以下部位，且堵塞物較硬。堵塞物化學(xué)分析空預(yù)器冷端冷端密封板上均為結(jié)晶樣顆粒，且結(jié)晶物較為堅硬?？疹A(yù)器運(yùn)行半年后阻力增加約50%，對引風(fēng)機(jī)也會造成較大影響。</p><p> NH3和SO3濃度乘積影響***氫氨形成的另一重要因素是NH3和SO3濃度的乘積。以往認(rèn)為如果氨逃逸量在2μL/L以下將不會形成***氫氨，然而事實(shí)上在足夠高的SO3煙氣濃度下即使1μL/L的氨逃逸量仍可形成***氫氨。而且，隨著NH3和SO3濃度乘積的升高，***氫氨的**溫度升高，使得空預(yù)器發(fā)生***氫氨沉積的范圍進(jìn)一步加大。隨鍋爐運(yùn)行負(fù)荷變化，會導(dǎo)致通過催化劑的煙氣量、溫度、煙氣流速等發(fā)生變化，從而對***氫氨的形成產(chǎn)生影響：在鍋爐滿負(fù)荷(MCR)運(yùn)行時，催化劑區(qū)域溫度較高，流場也較為均勻，***氫氨的形成可能降低；反之，隨著鍋爐運(yùn)行負(fù)荷的降低，煙氣流量降低，催化劑區(qū)域溫度降低，***氫氨的形成可能增加。3***氫氨的控制～230℃之間的溫區(qū)位于空預(yù)器常規(guī)設(shè)計的冷段層上方和中間層下方，由于***氫氨在此溫區(qū)為液態(tài)向固態(tài)轉(zhuǎn)變階段，具有極強(qiáng)的吸附性，會造成大量灰分在空預(yù)器沉降，引起空預(yù)器堵塞及阻力上升，嚴(yán)重時將迫使停爐以清理空預(yù)器。同時，***氫氨或***氨本身對金屬有較強(qiáng)的腐蝕性，會造成催化劑金屬支撐架和空預(yù)器冷段腐蝕。因此必須嚴(yán)格控制氨泄漏量，一般要求小于3μL/L。當(dāng)反應(yīng)器入口管道設(shè)計不合理時，會引起反應(yīng)器截面上的NH3/NOx摩爾比、流量或溫度出現(xiàn)偏差。什么是板式空氣預(yù)熱器？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇板式空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.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(yùn)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(yùn)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。板式空氣預(yù)熱器有什么優(yōu)勢？河北空氣預(yù)熱器哪里有</p><p style="text-indent:25px">板式空氣預(yù)熱器是一種煉**業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。江蘇板式空氣預(yù)熱器</p><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(yùn)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(yùn)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(diǎn)，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(shí)施漏風(fēng)率控制；1）運(yùn)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。江蘇板式空氣預(yù)熱器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2631081.html</p></div></div></div></div></div><div id="gzahokb" class="page-right twoColRt"><div id="7bsy7yk" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ayzgmtk" class="recomPic 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