福建空氣預(yù)熱器誠信企業(yè) 誠信經(jīng)營上海板換機(jī)械設(shè)備供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 一般各自廠家根據(jù)自己的板型都有自己的選型軟件。國際上通用的軟件有HTRI，HTFS等。通用的計(jì)算軟件公開的很少，國內(nèi)一些網(wǎng)站如換熱支持網(wǎng)站提供了提供了板式換熱器的在線計(jì)算軟件，可供參考使用。板"><meta name="keywords" content="福建空氣預(yù)熱器誠信企業(yè),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" 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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>福建空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器</p><p><span>***更新：</span>2020-12-23 09:07:44</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="gugszqh" 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="aol2tf3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="kdu32zq" class="box"><p><p> 一般各自廠家根據(jù)自己的板型都有自己的選型軟件。國際上通用的軟件有HTRI，HTFS等。通用的計(jì)算軟件公開的很少，國內(nèi)一些網(wǎng)站如換熱支持網(wǎng)站提供了提供了板式換熱器的在線計(jì)算軟件，可供參考使用。板式換熱器常見故障編輯外漏主要表現(xiàn)為滲漏（量不大，水滴不連續(xù)）和泄漏（量較大，水滴連續(xù)）。外漏出現(xiàn)的主要部位為板片與板片之間的密封處、板片二道密封泄漏槽部位以及端部板片與壓緊板內(nèi)側(cè)。串液主要特征為壓力較高一側(cè)的介質(zhì)串入壓力較低一側(cè)的介質(zhì)中，系統(tǒng)中會(huì)出現(xiàn)壓力和溫度的異常，福建空氣預(yù)熱器誠信企業(yè)。如果介質(zhì)具有腐蝕性，還可能導(dǎo)致板式換熱器密封墊片的腐蝕。串液通常發(fā)生在導(dǎo)流區(qū)域或者二道密封區(qū)域處。壓降大介質(zhì)進(jìn)、出口壓降超過設(shè)計(jì)要求，甚至高出設(shè)計(jì)值許多倍，嚴(yán)重影響系統(tǒng)對流量和溫度的要求。在供暖系統(tǒng)中，若熱側(cè)壓降過大，則一次側(cè)流量將嚴(yán)重不足，即熱源不夠，福建空氣預(yù)熱器誠信企業(yè)，導(dǎo)致二次側(cè)出溫度不能滿足要求。供熱溫度不能滿足要求主要特征是出口溫度偏低，達(dá)不到設(shè)計(jì)要求。面積相同換熱量的板式換熱器*為管殼式換熱器的1/5，福建空氣預(yù)熱器誠信企業(yè)。3、容易清洗拆裝方便：板式換熱器靠夾緊螺栓將夾固板板片夾緊，因此拆裝方便，隨時(shí)可以打開清洗，同時(shí)由于板面光潔，湍流程度高，不易結(jié)垢。板式空氣預(yù)熱器每個(gè)模塊均自帶外框架。福建空氣預(yù)熱器誠信企業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg"></div><p> 從而造成NH3泄漏以及NOx脫除不完全，使其易被氧化為SO3。SO3在空預(yù)器冷段(溫度177～232℃)濃縮成酸霧，腐蝕受熱面。在SCR反應(yīng)器出口SO3與逃逸的氨反應(yīng)生成***氫氨。在SO2氧化率的控制方面，主要取決于催化劑V2O5中的含量，釩的擔(dān)載量不能太高，通?？刂圃?%左右可減少SO2氧化。此外，采用提高催化劑活性組分。如WO3)含量，亦可***SO2氧化。這一點(diǎn)在脫硝系統(tǒng)安裝完成后，運(yùn)行中基本沒有調(diào)節(jié)手段。煙氣流場優(yōu)化煙氣流場的不均勻?qū)?dǎo)致脫硝系統(tǒng)出口氨逃逸率局部超標(biāo)，加快空預(yù)器傳熱元件上***氫氨的沉積。在氨逃逸量的控制方面可利用計(jì)算流體力學(xué)軟件優(yōu)化設(shè)計(jì)，對SCR脫硝裝置入口煙氣流量和流速分布進(jìn)行模擬，確定導(dǎo)流葉片的類型、數(shù)量和位置，同時(shí)，在運(yùn)行中針對經(jīng)常的運(yùn)行工況進(jìn)行調(diào)勻試驗(yàn)。以使入口煙氣流速、溫度和濃度均勻；同時(shí)調(diào)整噴氨格柵各個(gè)噴口，使NH3混合均勻，保證脫硝出口的NOx含量和NH3均勻，避免局部氨逃逸量超標(biāo)，**終減少氨逃逸量。運(yùn)行中，由于機(jī)組負(fù)荷變化較大，雖然經(jīng)過調(diào)勻試驗(yàn)，但無法保證在所有的工況下煙氣流場均穩(wěn)定均勻。因此，必然發(fā)生氨逃逸率局部偏大，長期低負(fù)荷運(yùn)行將造成空預(yù)器堵塞的可能性加大。天津食品空氣預(yù)熱器板式空氣預(yù)熱器怎么清洗？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 防止空預(yù)器堵灰、腐蝕措施適應(yīng)范圍：空預(yù)器堵灰、腐蝕嚴(yán)重的鍋爐技術(shù)原理與要點(diǎn)：空預(yù)器綜合冷端溫度（空預(yù)器進(jìn)口空氣溫度與煙氣出口平均溫度之和）對冷端結(jié)露和腐蝕、堵灰影響較大。空預(yù)器出口綜合冷端溫度如低于酸**溫度，空預(yù)器冷端很快就會(huì)積灰，一周內(nèi)就形成極難去除的板結(jié)垢。冷端溫度目標(biāo)值應(yīng)根據(jù)“綜合冷端溫度與燃料含硫量變化曲線”確定，并根據(jù)燃用煤種性質(zhì)進(jìn)行修正，除收到基全硫（St,ar）＜，燃用其他煤種原則上不要低于130℃。煙氣酸**主要受燃煤中的硫分、灰分、灰成分（特別是灰中Ca含量）、水分和發(fā)熱量的影響，灰分和灰中Ca含量越高，酸**越低；硫分和水分越高，酸**越高。由于不同酸**計(jì)算經(jīng)驗(yàn)公式計(jì)算出的數(shù)值偏差較大，對燃用煤種相對穩(wěn)定的鍋爐，應(yīng)通過調(diào)整冷端溫度觀察空預(yù)器差壓變化趨勢等方法，確定該煤種對應(yīng)的目標(biāo)綜合溫度控制值，并根據(jù)空預(yù)器煙氣側(cè)差壓變化情況及時(shí)提高空預(yù)器冷端溫度控制值。為提高控制精度和減輕運(yùn)行人員調(diào)整工作量，空預(yù)器綜合冷端溫度控制目標(biāo)值建議通過原煙氣SO2濃度、燃煤量、煙氣量等參數(shù)實(shí)時(shí)計(jì)算并參與自動(dòng)調(diào)節(jié)。機(jī)組啟/停階段要注重冷端溫度控制。</p><p> 技術(shù)領(lǐng)域本實(shí)用新型涉及電站鍋爐空預(yù)器運(yùn)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(jì)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(jī)電耗增大等問題。尤其針對裝設(shè)有mggh系統(tǒng)的機(jī)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(jì)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(shí)現(xiàn)要素：本實(shí)用新型為了彌補(bǔ)現(xiàn)有技術(shù)的不足，提供了一種結(jié)構(gòu)簡單、設(shè)計(jì)合理的有效緩解空預(yù)器***氫銨堵塞的聯(lián)合系統(tǒng)。本實(shí)用新型是通過如下技術(shù)方案實(shí)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(jìn)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(jī)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(jìn)一步提高鍋爐送風(fēng)溫度。本實(shí)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(jī)組負(fù)荷進(jìn)行調(diào)整，減少風(fēng)機(jī)電耗。前置煙冷器回收部分煙氣余熱。板式空氣預(yù)熱器適合安裝空間有限的改造項(xiàng)目。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建空氣預(yù)熱器誠信企業(yè),空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><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?yàn)榭諝忸A(yù)熱器在轉(zhuǎn)動(dòng)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(yùn)行而使煙氣與空氣之間存在一定的間隙;同時(shí),由于煙氣和空氣之間存在壓差也會(huì)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(jī)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?yàn)檗D(zhuǎn)子上、下端溫度差異而發(fā)生蘑菇狀變形,進(jìn)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。板式空氣預(yù)熱器的作用是提高燃燒空氣溫度。寧夏化工空氣預(yù)熱器</p><p style="text-indent:25px">板式空氣預(yù)熱器維修廠家有哪些？福建空氣預(yù)熱器誠信企業(yè)</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(shí)，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(shí)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(qiáng)化了燃料的燃燒，因而進(jìn)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(shí)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。福建空氣預(yù)熱器誠信企業(yè)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2527719.html</p></div></div></div></div></div><div id="aolpgct" class="page-right twoColRt"><div id="8fwiuvc" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8pw2m7m" class="recomPic likePro"><a 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