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clearfix"><h1>湖南空氣預(yù)熱器代理來(lái)電咨詢(xún) 上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="bphwoax" class="proBig"><div id="dce7pe7" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039599609/9723902.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="qjlawyp" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039599609/9723902.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3vskwy2" 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>湖南空氣預(yù)熱器代理,空氣預(yù)熱器</p><p><span>***更新：</span>2020-12-26 13:09:10</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="onfhoq2" 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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="z3wyl2q" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3zbip8r" 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(mǎn)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。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，會(huì)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(shí)將迫使停爐以清理空預(yù)器。同時(shí)，湖南空氣預(yù)熱器代理，湖南空氣預(yù)熱器代理，***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，湖南空氣預(yù)熱器代理，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)熱器是一種電力工業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。湖南空氣預(yù)熱器代理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器代理,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039599609/9723902.jpg"></div><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(guò)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(guò)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(xiàn)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。黑龍江本地空氣預(yù)熱器板式空氣預(yù)熱器長(zhǎng)什么樣？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器代理,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220415160732422/6470394.jpg"></div><p> 兩種流體分別在管程和殼程內(nèi)流動(dòng)，總體上是錯(cuò)流流動(dòng)，對(duì)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(dòng)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(dòng)平行于換熱面、無(wú)旁流，因此使得板式換熱器的末端溫差小，對(duì)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(zhǎng)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(dòng)，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(guò)，介質(zhì)溫度應(yīng)在低于250℃以下，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?；蚶w維物質(zhì)時(shí)，容易堵塞板間通道。板式換熱器基本分類(lèi)編輯一般情況下，我們主要根據(jù)結(jié)構(gòu)來(lái)區(qū)分板式換熱器，也就是根據(jù)外形來(lái)區(qū)分，可分為四大類(lèi)：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。</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(guò)凈化處理，是一種輸送和使用方便、燃燒后又無(wú)需排渣和除塵的質(zhì)量環(huán)保能源，我國(guó)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(lái)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(gè)重要課題。高爐熱風(fēng)爐采用空氣、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(shí)，其理論燃燒溫度只有1280℃；只預(yù)熱空氣到250℃時(shí)，其理論燃燒溫度提高到1330℃；而空氣、煤氣雙預(yù)熱到170℃時(shí)，能提高到1380℃。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℃。什么是板式空氣預(yù)熱器？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器代理,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 扭矩臂被固定在頂部結(jié)構(gòu)上的扭矩臂支座內(nèi)。扭矩臂支座通過(guò)扭矩臂給驅(qū)動(dòng)機(jī)構(gòu)一個(gè)反作用扭轉(zhuǎn)力矩從而驅(qū)動(dòng)驅(qū)動(dòng)軸和轉(zhuǎn)子旋轉(zhuǎn)，而驅(qū)動(dòng)裝置扭矩臂沿垂直方向可以在扭矩臂支座內(nèi)上下自由移動(dòng)，以適應(yīng)轉(zhuǎn)子與頂部結(jié)構(gòu)的熱態(tài)漲差。主電機(jī)的非驅(qū)動(dòng)端設(shè)有鍵連接的輸出軸，以便在維護(hù)時(shí)用盤(pán)車(chē)手柄進(jìn)行手動(dòng)盤(pán)車(chē)。減速箱為油浴潤(rùn)滑。10、底部推力軸承轉(zhuǎn)子由自調(diào)球面滾子推力軸承支撐，底部軸承箱固定在支撐凳板上。轉(zhuǎn)子的全部旋轉(zhuǎn)重量均由推力軸承支撐。底部軸承箱在定位后，將螺栓和定位墊板一起鎖定，并將墊板焊在支撐板上。底部軸承兩側(cè)均設(shè)有防護(hù)網(wǎng)，以防止空預(yù)器正常運(yùn)行時(shí)無(wú)關(guān)人員靠近轉(zhuǎn)動(dòng)部位而發(fā)生意外。底部軸承采用油浴潤(rùn)滑。軸承箱上裝有注油器和油位計(jì)，并開(kāi)有用于安裝測(cè)溫元件的1/2”BSP螺紋孔。底部軸承箱下面配有不同厚度的調(diào)整墊片。用于現(xiàn)場(chǎng)調(diào)整轉(zhuǎn)子的上下位置和頂?shù)讖较蛎芊忾g隙的大小。安裝時(shí)還應(yīng)適當(dāng)增加墊片數(shù)量用以補(bǔ)償?shù)琢撼休d后的彎曲變形。11、頂部導(dǎo)向軸承頂部導(dǎo)向軸承為球面滾子軸承，安裝在軸套上。軸套裝在轉(zhuǎn)子驅(qū)動(dòng)軸上，并用鎖緊盤(pán)與之固定．導(dǎo)向軸承和軸套的大部分處于頂部軸承箱內(nèi)。頂部承箱兩側(cè)焊有槽形支臂。上海板換機(jī)械設(shè)備有限公司專(zhuān)業(yè)生產(chǎn)板式空氣預(yù)熱器設(shè)備。湖南空氣預(yù)熱器加盟</p><p style="text-indent:25px">板式空氣預(yù)熱器有什么優(yōu)勢(shì)？湖南空氣預(yù)熱器代理</p><p> 空預(yù)器吹灰器故障、減壓閥調(diào)節(jié)性能不好，蒸汽帶水，不但減弱吹灰效果，嚴(yán)重時(shí)還會(huì)在高溫下與積灰泥化板結(jié)。吹灰蒸汽閥門(mén)不嚴(yán)泄露鍋爐空預(yù)器吹灰進(jìn)汽閥門(mén)不嚴(yán)密，導(dǎo)致水蒸氣漏入空預(yù)器內(nèi)部，導(dǎo)致空預(yù)器堵塞。故此，在每次停爐時(shí)，對(duì)空預(yù)器吹灰進(jìn)汽閥進(jìn)行檢查處理，能有效避免此原因?qū)е碌亩氯l(fā)生?？疹A(yù)器水沖洗不徹底鍋爐每次停爐后，都要進(jìn)行空預(yù)器水沖洗，沖洗過(guò)程一定要徹底，可采用透光法等手段進(jìn)行檢查，避免沖洗不徹底。否則會(huì)在極短時(shí)間內(nèi)加重堵塞，失去沖洗的意義?？疹A(yù)器壓差偏大，而在實(shí)行超低排放后，這一現(xiàn)象更加突出。高負(fù)荷時(shí)達(dá)到，吹灰器投運(yùn)后效果不明顯，原因分析如下：空預(yù)器堵塞燃煤鍋爐爐膛內(nèi)煙氣中的SO2約有％～％被氧化成SO3。加裝SCR系統(tǒng)后，催化劑在把NOx還原成Ｎ２的同時(shí)，將約％的SO2氧化成SO3。SCR反應(yīng)器出口煙氣中存在的未反應(yīng)的逃逸氨（NH３）、SO３及水蒸氣反應(yīng)生成***氫氨或***氨：ＮＨ３＋ＳＯ３＋Ｈ２Ｏ→ＮＨ４ＨＳＯ４２ＮＨ３＋ＳＯ３＋Ｈ２Ｏ→（ＮＨ４）２ＳＯ４當(dāng)煙氣中的ＮＨ３含量遠(yuǎn)高于SO3濃度時(shí)，主要生成干燥的粉末狀***氨，不會(huì)對(duì)空預(yù)器產(chǎn)生粘附結(jié)垢。當(dāng)煙氣中的SO3濃度高于逃逸氨濃度時(shí)，主要生成***氫氨（ABS）。湖南空氣預(yù)熱器代理</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2573726.html</p></div></div></div></div></div><div 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