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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qz7gkwn" 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>吉林空氣預(yù)熱器市場前景如何,空氣預(yù)熱器</p><p><span>***更新：</span>2020-08-19 16:21:04</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="7bsof8j" 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="vtfmdhn" class="page-proshow02"><p class="title">詳細說明</p><div id="yc2rg7b" class="box"><p><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，吉林空氣預(yù)熱器市場前景如何，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)溫成為一個重要課題。高爐熱風(fēng)爐采用空氣，吉林空氣預(yù)熱器市場前景如何、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，其理論燃燒溫度只有1280℃；只預(yù)熱空氣到250℃時，其理論燃燒溫度提高到1330℃；而空氣、煤氣雙預(yù)熱到170℃時，能提高到1380℃，吉林空氣預(yù)熱器市場前景如何。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℃。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。吉林空氣預(yù)熱器市場前景如何</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器市場前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039599609/9723902.jpg"></div><p> 板式換熱器是由一系列具有一定波紋形狀的金屬片疊裝而成的一種換熱器。各種板片之間形成薄矩形通道，通過板片進行熱量交換。板式換熱器是液—液、液—汽進行熱交換的理想設(shè)備。它具有換熱效率高、熱損失小、結(jié)構(gòu)緊湊輕巧、占地面積小、應(yīng)用廣、使用壽命長等特點。在相同壓力損失情況下，其傳熱系數(shù)比管式換熱器高3-5倍，占地面積為管式換熱器的三分之一，熱回收率可高達90%以上板片和墊片的四個角孔形成了流體的分配管和匯集管，同時又合理地將冷熱流體分開，使其分別在每塊板片兩側(cè)的流道中流動，通過板片進行熱交換。[3]板式換熱器的優(yōu)化設(shè)計計算，就是在已知溫差比NTUE的條件下，合理地確定其型號、流程和傳熱面積，使NTUp等于NTUE。[4]板式換熱器基本組成結(jié)構(gòu)：⒈板式換熱器板片和板式換熱器密封墊片⒉固定壓緊板⒊活動壓緊板⒋夾緊螺栓⒌上導(dǎo)桿⒍下導(dǎo)桿⒎后立柱板式換熱器特點編輯（板式換熱器與管殼式換熱器的比較）a.傳熱系數(shù)高；由于不同的波紋板相互倒置，構(gòu)成復(fù)雜的流道，使流體在波紋板間流道內(nèi)呈旋轉(zhuǎn)三維流動，能在較低的雷諾數(shù)（一般Re=50~200）下產(chǎn)生紊流，所以傳熱系數(shù)高，一般認為是管殼式的3~5倍。[2]b.對數(shù)平均溫差大，末端溫差小。在管殼式換熱器中。廣東空氣預(yù)熱器加盟板式空氣預(yù)熱器柱狀平板適用于氣體雜質(zhì)較多或工藝清洗要求較高的場合。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器市場前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><p> 技術(shù)領(lǐng)域本實用新型涉及電站鍋爐空預(yù)器運行安全技術(shù)領(lǐng)域，特別涉及一種有效緩解空預(yù)器***氫銨堵塞的聯(lián)合系統(tǒng)。背景技術(shù)：目前，部分燃煤鍋爐排煙溫度低于設(shè)計值，導(dǎo)致空氣預(yù)熱器冷端綜合溫度降低、***氫銨腐蝕及堵塞加劇、煙氣余熱的能級降低、引風(fēng)機電耗增大等問題。尤其針對裝設(shè)有mggh系統(tǒng)的機組，單純利用空氣預(yù)熱器出口的煙氣余熱，不足以將脫硫塔出口的煙氣溫度提升至設(shè)計值，需另外投入大量的輔助蒸汽來維持煙囪入口煙氣溫度。（三）技術(shù)實現(xiàn)要素：本實用新型為了彌補現(xiàn)有技術(shù)的不足，提供了一種結(jié)構(gòu)簡單、設(shè)計合理的有效緩解空預(yù)器***氫銨堵塞的聯(lián)合系統(tǒng)。本實用新型是通過如下技術(shù)方案實現(xiàn)的：一種有效緩解空預(yù)器***氫銨堵塞的聯(lián)合系統(tǒng)，包括安裝在空氣預(yù)熱器出口至mggh煙氣冷卻器進口煙道之間的前置煙冷器，用來吸收煙氣余熱；安裝在送風(fēng)機出口冷風(fēng)道內(nèi)的蒸汽暖風(fēng)器，用來加熱鍋爐送風(fēng)；安裝在蒸汽暖風(fēng)器出口至空氣預(yù)熱器入口風(fēng)道之間的水媒式暖風(fēng)器，用來進一步提高鍋爐送風(fēng)溫度。本實用新型采用前置煙冷器聯(lián)合水媒式暖風(fēng)器和蒸汽暖風(fēng)器共同加熱鍋爐送風(fēng)。蒸汽暖風(fēng)器采用旋轉(zhuǎn)式，可根據(jù)環(huán)境溫度和機組負荷進行調(diào)整，減少風(fēng)機電耗。前置煙冷器回收部分煙氣余熱。</p><p> 空氣預(yù)熱器換熱原理空氣預(yù)熱器是布置在尾部煙道上利用排煙余熱將空氣預(yù)熱到所需溫度的熱交換器。當(dāng)空預(yù)器換熱元件經(jīng)過煙氣側(cè)時，煙氣攜帶的一部分熱量就傳遞給換熱元件；而換熱元件經(jīng)過空氣側(cè)時又把熱量傳遞給空氣。這樣空預(yù)器回收了煙氣的熱量，降低了排煙溫度，提高了燃料與空氣的初始溫，強化了燃料的燃燒，因而進一步提高了鍋爐效率。換熱元件換熱元件由薄鋼板制成，一片波紋板上有斜波．另一片上除了方向不同的斜波外還有直槽，帶斜波的波紋板和帶有斜波和直槽的定位板交替層疊．直槽與轉(zhuǎn)子軸線方向平行布置、使波紋板和定位板之間保持適當(dāng)?shù)募措x。斜波與直槽呈30o夾角．使得空氣或煙氣流經(jīng)換熱元件時形成較大的紊流，以改換換熱效果。由于冷端（即煙氣出口端和空氣入口端）受溫度和燃燒條件的影響**易腐蝕，因而換熱元件分層布置，其中，熱端和中溫段換熱元件由低碳鋼制成，而冷端換熱元件則由等同考登鋼制成。換熱元件均裝在元件盒內(nèi)以便于安裝和取出。其中，熱端和中溫段換熱元件垂直向上抽取。熱端：厚，深350mm，低碳鋼中溫端：厚，深1000mm，低碳鋼冷端：厚，深950mm，等同烤登鋼2、轉(zhuǎn)子連在中心筒輪轂上的低碳鋼主隔板為轉(zhuǎn)子的基本構(gòu)架。板式空氣預(yù)熱器是上海板換機械設(shè)備有限公司主要產(chǎn)品之一。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林空氣預(yù)熱器市場前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg"></div><p> 還可以減少一次風(fēng)沿轉(zhuǎn)子的上下端面通過徑向間隙漏到二次風(fēng)的漏風(fēng)量；主要由扇形板和徑向密封片及間隙調(diào)整裝置等組成。軸向密封：空預(yù)器在轉(zhuǎn)子外圓周和機殼之間有較大的空間，如果不采取密封措施，空氣會漏到煙氣中去。為了減少空氣在轉(zhuǎn)子周圍沿其周向漏到煙氣區(qū)，故需裝設(shè)軸向密封裝置。軸向密封裝置由軸向密封片與軸向密封板組成。軸向密封片固定在轉(zhuǎn)子外圓管的徑向倉隔板上，從熱端到冷端，沿著整個轉(zhuǎn)子的高度（即軸向）裝設(shè)?？烧{(diào)軸向密封板裝于主支座板的內(nèi)側(cè)，與扇形板外側(cè)端相齊平，從熱端延伸到冷端。環(huán)向密封：包括轉(zhuǎn)子外周上、下端處的旁路密封（周向密封）和中心筒密封兩部分。旁路密封分為外環(huán)向密封和內(nèi)環(huán)向密封兩種。外環(huán)向密封是防止空氣通過轉(zhuǎn)子外圓筒的上、下端面漏入轉(zhuǎn)子外圓筒與外殼之間的空隙，再沿這個空隙漏向煙氣側(cè)。內(nèi)環(huán)向密封是防止空氣通過軸的上、下端面漏入煙氣通道，旁路密封主要由旁路密封片和T型鋼組成；中心筒密封片固定在轉(zhuǎn)子中心筒的熱端和冷端端板的圓周上，并隨轉(zhuǎn)子一起旋轉(zhuǎn)。密封片與固定在機殼的環(huán)形密封盤或密封蓋的凸緣之間保持一定的間隙。板式空氣預(yù)熱器是全焊接密封結(jié)構(gòu)。吉林空氣預(yù)熱器市場前景如何</p><p style="text-indent:25px">上海板式空氣預(yù)熱器廠家有哪些？吉林空氣預(yù)熱器市場前景如何</p><p> 空氣預(yù)熱器漏風(fēng)主要可以分為以下兩類:(1)攜帶漏風(fēng)。攜帶漏風(fēng)主要是因為空氣預(yù)熱器在轉(zhuǎn)動過程中,一部分駐留在換熱元件中的空氣被攜帶到煙氣中去,一部分駐留在換熱元件中的煙氣被攜帶到空氣中去。這種情況造成的漏風(fēng)量很小,但這種漏風(fēng)是空氣預(yù)熱器的構(gòu)造無法避免的。(2)直接漏風(fēng)。直接漏風(fēng)主要是由于空氣預(yù)熱器結(jié)構(gòu)本身為保證安全運行而使煙氣與空氣之間存在一定的間隙;同時,由于煙氣和空氣之間存在壓差也會產(chǎn)生漏風(fēng)。對于三分倉空氣預(yù)熱器，它不但有空氣區(qū)與煙氣區(qū)之間的間隙漏風(fēng)，還有一次風(fēng)倉與二次風(fēng)倉之間漏風(fēng)。此外，外界的空氣也可以通過轉(zhuǎn)軸和機殼之間的間隙漏入煙氣區(qū)。直接漏風(fēng)主要包括徑向漏風(fēng)、軸向漏風(fēng)、環(huán)向漏風(fēng)。徑向漏風(fēng)占直接漏風(fēng)量的2/3左右,主要是因為轉(zhuǎn)子上、下端溫度差異而發(fā)生蘑菇狀變形,進而造成密封間隙的增大和漏風(fēng)率的增加；其次環(huán)向的密封間隙漏風(fēng)，**小的是軸向風(fēng)。在間隙及漏風(fēng)通流面積相同條件下冷端漏風(fēng)量較熱端大。為了減小漏風(fēng)，回轉(zhuǎn)式空氣預(yù)熱器均裝有密封裝置，主要有徑向密封、軸向密封、和環(huán)向密封。徑向密封：用以防止和減少空預(yù)器中空氣沿轉(zhuǎn)子的上、下端面通過徑向間隙漏到煙氣區(qū)的漏風(fēng)量。吉林空氣預(yù)熱器市場前景如何</p><p style="text-indent:25px">上海板換機械設(shè)備有限公司成立于2005-11-30，注冊資本：5000萬元-1億元。該公司生產(chǎn)型的公司。上海板換是一家有限責(zé)任公司企業(yè)，一直貫徹“以人為本，服務(wù)于社會”的經(jīng)營理念;“質(zhì)量高速，誠守信譽，持續(xù)發(fā)展”的質(zhì)量方針。以滿足顧客要求為己任；以顧客永遠滿意為標準；以保持行業(yè)**為目標，提供***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" ]。上海板換以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標的服務(wù)，引導(dǎo)行業(yè)的發(fā)展。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/969058.html</p></div></div></div></div></div><div id="wlifm4c" class="page-right twoColRt"><div id="mbdkwfh" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hrh722p" 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="bam7jam" class="recomPic 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