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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="l8m3vva" class="twoCol"><div id="2ebdfc2" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<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>?海南小型空氣預(yù)熱器上海板換機(jī)械設(shè)備供應(yīng)</p><div id="veryq3c" class="leftbox clearfix"><h1>海南小型空氣預(yù)熱器上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="gac3t3g" class="proBig"><div id="xg2b8sk" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bafu3kh" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ajlik8m" 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>海南小型空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2020-08-14 21:15:24</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="33nrs2l" 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="lax7shl" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="xme8uwt" class="box"><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(huì)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(huì)導(dǎo)致通過(guò)催化劑的煙氣量、溫度、煙氣流速等發(fā)生變化，從而對(duì)***氫氨的形成產(chǎn)生影響：在鍋爐滿負(fù)荷(MCR)運(yùn)行時(shí)，催化劑區(qū)域溫度較高，流場(chǎng)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，海南小型空氣預(yù)熱器。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(jì)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，海南小型空氣預(yù)熱器，會(huì)造成大量灰分在空預(yù)器沉降，海南小型空氣預(yù)熱器，引起空預(yù)器堵塞及阻力上升，嚴(yán)重時(shí)將迫使停爐以清理空預(yù)器。同時(shí)，***氫氨或***氨本身對(duì)金屬有較強(qiáng)的腐蝕性，會(huì)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(jì)不合理時(shí)，會(huì)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。板式空氣預(yù)熱器有換熱模塊組合。海南小型空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南小型空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220414500673828/8758232.jpg"></div><p> 可選用搪瓷鍍層換熱元件。在運(yùn)行維護(hù)過(guò)程中，為減少***氫氨對(duì)機(jī)組安全運(yùn)行的影響，應(yīng)從以下幾方面開(kāi)展工作：（1）嚴(yán)格控制氨逃逸率。應(yīng)通過(guò)脫硝性能試驗(yàn)，對(duì)脫硝出口進(jìn)行全斷面氨逃逸率檢測(cè)，比對(duì)在線儀表，保證在線儀表準(zhǔn)確反映實(shí)際情況。（2）建立脫硝系統(tǒng)定期試驗(yàn)制度，包括流場(chǎng)均勻性試驗(yàn)，催化劑活性試驗(yàn)。特別是流場(chǎng)試驗(yàn)。在催化劑運(yùn)行2至3年后，催化劑活性必然降低。同時(shí)，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(guò)流場(chǎng)均勻性試驗(yàn)，能及時(shí)掌握催化劑局部失效引起氨逃逸率局部增加的狀況，通過(guò)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(yùn)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(guò)控制入爐煤中的硫份來(lái)控制***氫氨。（4）加強(qiáng)空預(yù)器吹灰，并及時(shí)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(huì)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。安徽板式空氣預(yù)熱器板式空氣預(yù)熱器每個(gè)模塊均自帶外框架。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南小型空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 隨國(guó)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。現(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(shí)，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(shí)，A、B側(cè)空預(yù)器煙氣差壓*分別為、，到4個(gè)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(shuō)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(jiān)硬?？疹A(yù)器運(yùn)行半年后阻力增加約50%，對(duì)引風(fēng)機(jī)也會(huì)造成較大影響。</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(cāng)，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(cāng)過(guò)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(shí)有效，大機(jī)組無(wú)LCS（間隙自調(diào)裝置）時(shí)熱端效果不明顯；運(yùn)行時(shí)間長(zhǎng)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(duì)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(duì)性設(shè)計(jì)，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(xiàng)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)熱器價(jià)格。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南小型空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg"></div><p> 通過(guò)調(diào)節(jié)固定在頂部結(jié)構(gòu)上的螺栓和支臂的相對(duì)位置來(lái)改變轉(zhuǎn)子頂部軸承中心的位置，從而達(dá)到調(diào)整轉(zhuǎn)子中心線位置的目的。頂部軸承支臂與頂部結(jié)構(gòu)用8個(gè)鎖緊螺栓和上下墊板定位固足，待頂部軸承位置**終調(diào)整就位后，即可將上述墊板與頂部結(jié)構(gòu)的翼板焊在一起。頂部軸承采用油浴潤(rùn)滑，潤(rùn)滑油等級(jí)與底部推力軸承相同。頂部軸承箱上有加油孔、注油器、油位計(jì)、呼吸器和放油塞。另外還設(shè)有用于安裝測(cè)溫元件的1/2”BSP螺紋孔。12、轉(zhuǎn)子密封系統(tǒng)空預(yù)器的密封系統(tǒng)由轉(zhuǎn)子徑向、軸向、環(huán)向以及轉(zhuǎn)子中心筒密封組成。13、徑向密封徑向密封片安裝在轉(zhuǎn)子徑向隔板的上、下緣。密封片由，與6mm厚的低碳鋼壓板一起通過(guò)自鎖螺母固定在轉(zhuǎn)子隔板上。所有密封片均設(shè)計(jì)呈單片直葉型．徑向密封片用來(lái)減小空氣到煙氣的直接漏風(fēng)。14、軸向密封軸向密封片和徑向密封片一起，用于減小轉(zhuǎn)子和密封擋板之間的間隙。軸向密封片由，安裝在轉(zhuǎn)子徑向隔板的垂直外緣處，其冷態(tài)位置的設(shè)定應(yīng)保證鍋爐帶負(fù)荷運(yùn)行以及停爐時(shí)無(wú)冷風(fēng)時(shí)與軸向密封板之間保持**小的密封間隙。軸向密封的固定方式與徑向密封片相同。軸向密封片供貨時(shí)兩端均留有修整余量，現(xiàn)場(chǎng)可根據(jù)轉(zhuǎn)子外緣角鋼**終的實(shí)際位置進(jìn)行栽切。專業(yè)生產(chǎn)板式空氣預(yù)熱器廠家。湖北空氣預(yù)熱器</p><p style="text-indent:25px">板式空氣預(yù)熱器流場(chǎng)分布均勻。海南小型空氣預(yù)熱器</p><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(dǎo)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(yùn)行的多臺(tái)板式換熱器流量分配不均。④換熱器內(nèi)部結(jié)垢嚴(yán)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(yùn)行的多臺(tái)板式換熱器的流量。③拆開(kāi)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(shè)計(jì)壓力、工作壓力、熱媒參數(shù)等。板式換熱器產(chǎn)品選用要點(diǎn)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(shè)計(jì)溫度等。⒉選用換熱器時(shí)，應(yīng)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(yīng)比換熱器出口壓力下的飽和溫度低10℃，且應(yīng)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(guò)過(guò)濾后進(jìn)入換熱器。⒋選用板式換熱器時(shí)，溫差較小側(cè)流體的接口處流速不宜過(guò)大，應(yīng)能滿足壓力降的要求。⒌對(duì)于流量大允許壓力降小的情況應(yīng)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。海南小型空氣預(yù)熱器</p><p style="text-indent:25px">上海板換機(jī)械設(shè)備有限公司坐落在山陽(yáng)鎮(zhèn)山寧路99號(hào)，是一家專業(yè)的化工設(shè)備、環(huán)保設(shè)備及配件的制造加工及銷售，機(jī)械設(shè)備設(shè)計(jì)安裝（除特種設(shè)備外），在金山區(qū)山陽(yáng)鎮(zhèn)山寧路99號(hào)內(nèi)從事自有房屋租賃?！疽婪毥?jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門(mén)批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)】。主要生產(chǎn)制造的產(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。公司目前擁有101~300人員工，為員工提供廣闊的發(fā)展平臺(tái)與成長(zhǎng)空間，為客戶提供高質(zhì)高效的產(chǎn)品服務(wù)，深受員工與客戶好評(píng)。上海板換機(jī)械設(shè)備有限公司主營(yíng)業(yè)務(wù)涵蓋[ "板式換熱器機(jī)組", "可拆式板式換熱器", "焊接式板式換熱器", "板式空氣預(yù)熱器" ]，堅(jiān)持“質(zhì)量***、質(zhì)量服務(wù)、顧客滿意”的質(zhì)量方針，贏得廣大客戶的支持和信賴。一直以來(lái)公司堅(jiān)持以客戶為中心、[ "板式換熱器機(jī)組", "可拆式板式換熱器", "焊接式板式換熱器", "板式空氣預(yù)熱器" ]市場(chǎng)為導(dǎo)向，重信譽(yù)，保質(zhì)量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/917441.html</p></div></div></div></div></div><div id="p7zb2s3" class="page-right twoColRt"><div id="udqawdk" class="box01 margin10 clearfix"><h3><a 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