貴州食品空氣預(yù)熱器上海板換機械設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 兩種流體分別在管程和殼程內(nèi)流動，總體上是錯流流動，對數(shù)平均溫差修正系數(shù)小，而板式換熱器多是并流或逆流流動方式，其修正系數(shù)也通常在，此外，冷、熱流體在板式換熱器內(nèi)的流動平行于換熱面、無旁流，因此"><meta name="keywords" content="貴州食品空氣預(yù)熱器,空氣預(yù)熱器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(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>?貴州食品空氣預(yù)熱器上海板換機械設(shè)備供應(yīng)</p><div id="etqfbd2" class="leftbox clearfix"><h1>貴州食品空氣預(yù)熱器上海板換機械設(shè)備供應(yīng)</h1><div id="u8zlnu4" class="proBig"><div id="rvxurdx" 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="zia3vxr" 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="gv2kc2y" 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>貴州食品空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2020-08-17 02:13:45</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="rb7gs87" 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="ycpm2su" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hln7ik8" class="box"><p><p> 兩種流體分別在管程和殼程內(nèi)流動，總體上是錯流流動，對數(shù)平均溫差修正系數(shù)小，而板式換熱器多是并流或逆流流動方式，其修正系數(shù)也通常在，此外，冷、熱流體在板式換熱器內(nèi)的流動平行于換熱面、無旁流，因此使得板式換熱器的末端溫差小，貴州食品空氣預(yù)熱器，對水換熱可低于1℃，而管殼式換熱器一般為5℃fff.板式換熱器c.占地面積小。板式換熱器結(jié)構(gòu)緊湊。k.單位長度的壓力損失大；由于傳熱面之間的間隙較小，傳熱面上有凹凸，因此比傳統(tǒng)的光滑管的壓力損失大。l.不易結(jié)垢；由于內(nèi)部充分湍動，所以不易結(jié)垢，其結(jié)垢系數(shù)*為管殼式換熱器的1/3~1/，可能發(fā)生泄露；板式換熱器采用密封墊密封，工作壓力一般不宜超過，介質(zhì)溫度應(yīng)在低于250℃以下，貴州食品空氣預(yù)熱器，否則有可能泄露。n.易堵塞；由于板片間通道很窄，一般只有2~5mm，當(dāng)換熱介質(zhì)含有較大顆粒或纖維物質(zhì)時，容易堵塞板間通道。板式換熱器基本分類編輯一般情況下，我們主要根據(jù)結(jié)構(gòu)來區(qū)分板式換熱器，貴州食品空氣預(yù)熱器，也就是根據(jù)外形來區(qū)分，可分為四大類：①可拆卸板式換熱器（又叫帶密封墊片的板式換熱器）、②焊接板式換熱器、③螺旋板式換熱器、④板卷式換熱器（又叫蜂窩式換熱器）。其中。板式空氣預(yù)熱器適合安裝空間有限的改造項目。貴州食品空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州食品空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.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：（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)器運行半年后阻力增加約50%，對引風(fēng)機也會造成較大影響。河北空氣預(yù)熱器板式空氣預(yù)熱器有什么特點？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州食品空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410559414062/9489232.jpg"></div><p> 底梁還通過底部軸承凳板支撐著空預(yù)器轉(zhuǎn)動部件的載荷。底梁還支撐端柱、底部扇形板和底部扇形板支板的重量。底部過渡煙風(fēng)道的重量由底部結(jié)構(gòu)承受。底梁上的所有載荷分別由兩端傳遞到用戶鋼架上。7、頂部和底部三分倉結(jié)構(gòu)三分倉結(jié)構(gòu)包括三分倉扇形板和三分倉扇形板支板等，布置在轉(zhuǎn)子頂部和底部的空氣一側(cè)，內(nèi)緣對接在項、底結(jié)構(gòu)的扇形板和翼板上，外緣則焊接道支撐在轉(zhuǎn)子的外殼上的三分倉軸向密封板上。頂、底三分倉扇形板與三分倉軸向密封板一起，將空氣側(cè)分隔成一次風(fēng)和二次風(fēng)。8、過渡煙風(fēng)道過渡煙風(fēng)道位于轉(zhuǎn)子熱端和冷端的煙氣側(cè)和空氣側(cè)，其作用是將氣流導(dǎo)入和引出轉(zhuǎn)子。三分倉布置的風(fēng)道又被進(jìn)一步分為二次風(fēng)道和一次風(fēng)道。過渡煙風(fēng)道連接在轉(zhuǎn)子外殼平板以及頂?shù)捉Y(jié)構(gòu)上。為保證空預(yù)器結(jié)構(gòu)合理受力，所有過渡煙風(fēng)道內(nèi)均設(shè)置內(nèi)撐管。9、轉(zhuǎn)子驅(qū)動裝置轉(zhuǎn)子由中心驅(qū)動裝置驅(qū)動，驅(qū)動裝置直接與轉(zhuǎn)子頂部端軸相連。兩臺電機均能以正、反兩個方向驅(qū)動空預(yù)器，只有在空預(yù)器不帶負(fù)荷時才允許改變驅(qū)動方向。兩臺驅(qū)動電機與初級減速箱均為法蘭連接。終級減速箱通過輸出軸套直接套裝在驅(qū)動軸軸上并用鎖緊盤固定。終級減速箱一側(cè)裝有扭矩臂。</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。在沒有板片備件時可將變形部位板片暫時拆除后重新組裝使用。④重新組裝拆開的板片時，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)場分析發(fā)現(xiàn)，系統(tǒng)運行溫度、流量和濃度等工藝參數(shù)均超出設(shè)計條件，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。板式空氣預(yù)熱器詢價。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州食品空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><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(jìn)一步檢查發(fā)現(xiàn)B進(jìn)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(jìn)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。可通過控制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(fù)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。板式空氣預(yù)熱器怎么清洗？貴州食品空氣預(yù)熱器</p><p style="text-indent:25px">專業(yè)板式空氣預(yù)熱器廠家。貴州食品空氣預(yù)熱器</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(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。貴州食品空氣預(yù)熱器</p><p style="text-indent:25px">上海板換機械設(shè)備有限公司創(chuàng)建于2005-11-30，注冊資金 5000萬元-1億元，辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，已***實行網(wǎng)絡(luò)化辦公，**提高了速度和效率。上海板換是上海板換機械設(shè)備有限公司的主營品牌，是專業(yè)的化工設(shè)備、環(huán)保設(shè)備及配件的制造加工及銷售，機械設(shè)備設(shè)計安裝（除特種設(shè)備外），在金山區(qū)山陽鎮(zhèn)山寧路99號內(nèi)從事自有房屋租賃。【依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】。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，擁有自己**的技術(shù)體系。公司堅持以客戶為中心、化工設(shè)備、環(huán)保設(shè)備及配件的制造加工及銷售，機械設(shè)備設(shè)計安裝（除特種設(shè)備外），在金山區(qū)山陽鎮(zhèn)山寧路99號內(nèi)從事自有房屋租賃?！疽婪毥?jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】。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。市場為導(dǎo)向，重信譽，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。誠實、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***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" ]。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/940348.html</p></div></div></div></div></div><div id="as8w3n2" class="page-right twoColRt"><div id="j3o77xh" class="box01 margin10 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