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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>云南空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2020-07-14 12:22:21</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="hazjnjb" 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(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: </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="32rl4md" class="page-proshow02"><p class="title">詳細說明</p><div id="ujtkzvs" class="box"><p><p> 上海板換機械設(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)。板式空氣預(yù)熱器是一種節(jié)能環(huán)保設(shè)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(shè)計，組合方式靈活多變，結(jié)構(gòu)適應(yīng)性強，特有的空氣膜TM技術(shù)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(shè)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，云南空氣預(yù)熱器，云南空氣預(yù)熱器，云南空氣預(yù)熱器，從而保證設(shè)備壽命，而且可采用高低溫分級設(shè)計，不同溫度段可使用不同材料。板式空氣預(yù)熱器使用在廢氣催化焚燒爐。云南空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><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***氫氨沉積的范圍進一步加大。隨鍋爐運行負荷變化，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：在鍋爐滿負荷(MCR)運行時，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，隨著鍋爐運行負荷的降低，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。海南空氣預(yù)熱器哪家便宜板式空氣預(yù)熱器是一種電力工業(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="云南空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220411145419922/7208407.jpg"></div><p> 轉(zhuǎn)子隔倉由中心筒和外部分倉組成。轉(zhuǎn)子中心筒包括中心筒輪轂和內(nèi)部分倉，其中轉(zhuǎn)子主徑向隔板與中心筒輪轂連為一體。從中心筒向外延伸的主徑向隔板將轉(zhuǎn)子分為24倉，這些分倉又被二次徑向隔板分隔呈48倉。主徑向隔板和二次徑向隔板之間的環(huán)向隔板起加強轉(zhuǎn)子結(jié)構(gòu)和支撐換熱元件盒的作用。轉(zhuǎn)子與換熱元件等轉(zhuǎn)動件的全部重量由底部的球面滾子軸承支撐，而位于頂部的球面滾子導(dǎo)向軸承則用來承受徑向水平載荷。三分倉設(shè)計的空預(yù)器通過有三種不同的氣流，即煙氣、二次風(fēng)和一次風(fēng)。煙氣位于轉(zhuǎn)子的一側(cè)，而相對的另一側(cè)為二次風(fēng)側(cè)和一次風(fēng)側(cè)。上述三種氣流之間各由三組扇形板和軸向密封板相互隔開。煙氣和空氣流向相反，即煙氣向下、一次風(fēng)和二次風(fēng)向上。通過改變扇形板和軸向密封板的寬度可以實現(xiàn)雙密封和三密封，以滿足對空預(yù)器總漏風(fēng)率和一次風(fēng)漏風(fēng)率的要求。3、轉(zhuǎn)子外殼轉(zhuǎn)子外殼封閉轉(zhuǎn)子并構(gòu)成空預(yù)器的一部分，由低碳鋼板制成。轉(zhuǎn)子外殼由六個部分現(xiàn)場組裝而成正八面**于兩個端柱之間。端柱兩側(cè)的轉(zhuǎn)子外殼由四套鉸鏈側(cè)柱支撐在用戶鋼架上，鉸鏈側(cè)柱的布置角考慮到了轉(zhuǎn)子外殼和鉸鏈側(cè)柱能沿空預(yù)器中心向外自由、均勻膨脹。</p><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、出口，或安裝設(shè)備時在介質(zhì)進、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。若采用不拆卸機械反沖洗方法，應(yīng)事先在介質(zhì)進、出口管路上接一管口，將設(shè)備與機械清洗車連接，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水的方法?？諝忸A(yù)熱器的作用是使高溫?zé)煔饫鋮s，減少有害氣體排放。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南空氣預(yù)熱器,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***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***氨的形成起到促進的作用，同時***氨也能對***氫氨的形成起到一定的促進作用。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)熱器詢價。海南空氣預(yù)熱器哪家便宜</p><p style="text-indent:25px">板式空氣預(yù)熱器制造廠家有哪些？云南空氣預(yù)熱器</p><p> 本起空預(yù)器堵塞事件中B側(cè)空預(yù)器發(fā)生***氫氨堵塞嚴(yán)重，而A側(cè)較輕的原因經(jīng)檢查為：B側(cè)脫硝從鍋爐尾部煙道轉(zhuǎn)彎到脫硝入口的水平煙道處積灰明顯比A側(cè)積灰要嚴(yán)重，進一步檢查發(fā)現(xiàn)B進口在安裝時少安裝一級導(dǎo)流板，說明，B側(cè)脫硝因少裝一級導(dǎo)流板，造成煙氣中因渦流等原因形成煙道阻力加大，一方面因B側(cè)入口流場不均，易造成局部氨逃逸率增加。另一方面B側(cè)煙氣流量降低，進一步加劇流場不均。**終導(dǎo)致B側(cè)脫硝局部氨逃逸率超標(biāo)幅度增加，造成B側(cè)空預(yù)器堵塞更嚴(yán)重。4結(jié)論為提高SCR脫硝工藝脫硝效率，NH3/NOx摩爾比通?？刂茷榇笥?，因此脫硝過程氨逃逸不可避免。SCR脫硝過程使用的釩基催化劑會對煙氣中的SO2產(chǎn)生催化作用，使其易被氧化為SO3。SO3與逃逸的氨反應(yīng)生成***氫氨，***氫氨附著于催化劑的表面會阻塞催化劑并影響其活性，且***氫氨的粘性使之易于牢固黏附在空預(yù)器蓄熱元件的表面，使蓄熱元件積灰，空預(yù)器流通截面減小、阻力增加以及換熱元件的換熱效率下降?？赏ㄟ^控制SCR脫硝過程氨逃逸量和煙氣中SO3的方法減少***氫氨的生成量。為防止催化劑因***氫氨的滯留而失去活性，應(yīng)合理控制SCR脫硝裝置在低負荷下的運行時間。為有效降低***氫氨在空預(yù)器換熱元件上的形成速率。云南空氣預(yù)熱器</p><p style="text-indent:25px">上海板換機械設(shè)備有限公司創(chuàng)立于2005-11-30，是一家生產(chǎn)型公司。上海板換致力于為客戶提供質(zhì)量的[ "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(yù)熱器" ]，一切以用戶需求為中心,深受廣大客戶的歡迎。公司從事機械及行業(yè)設(shè)備多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供質(zhì)量的產(chǎn)品及服務(wù)。公司自成立以來發(fā)展迅速，業(yè)務(wù)不斷發(fā)展壯大，年營業(yè)額度達到1億元以上，未來我們將不斷進行創(chuàng)新和改進，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/595471.html</p></div></div></div></div></div><div id="bakw9jf" class="page-right twoColRt"><div id="nxp7tld" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="d78vceg" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="dspmgrj" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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