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id="tbx1lb9" class="twoCol"><div id="xrdpdnj" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)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>?浙江安全可靠空氣預(yù)熱器電話誠信經(jīng)營上海板換機(jī)械設(shè)備供應(yīng)</p><div id="xtrb99d" class="leftbox clearfix"><h1>浙江安全可靠空氣預(yù)熱器電話誠信經(jīng)營上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="951rpb9" class="proBig"><div id="9zfnd9h" 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="tbl11v1" 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="vppnn7n" 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>浙江安全可靠空氣預(yù)熱器電話,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-18 06:04:53</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="9x9n9zt" 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(jī): </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="1fblxjn" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vbdnn99" class="box"><p><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?？疹A(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**計算經(jīng)驗(yàn)公式計算出的數(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，浙江安全可靠空氣預(yù)熱器電話，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，浙江安全可靠空氣預(yù)熱器電話，浙江安全可靠空氣預(yù)熱器電話、燃煤量、煙氣量等參數(shù)實(shí)時計算并參與自動調(diào)節(jié)。機(jī)組啟/停階段要注重冷端溫度控制。板式空氣預(yù)熱器制造廠家有哪些？浙江安全可靠空氣預(yù)熱器電話</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江安全可靠空氣預(yù)熱器電話,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405032539062/8800983.jpg"></div><p> 過?？諝庀禂?shù)是燃料燃燒時實(shí)際空氣需要量與理論空氣需要量之比值，用“α”表示。計算公式：α＝()其中：，O2實(shí)測值為儀器測量煙道中的O2值舉例：鍋爐測試時O2實(shí)測值為13%，計算出的過?？諝庀禂?shù)α＝(％)＝國標(biāo)規(guī)定過?？諝庀禂?shù)應(yīng)按α＝（燃煤鍋爐），α＝（燃油燃?xì)忮仩t）進(jìn)行折算。舉例：燃煤鍋爐，鍋爐測試時O2實(shí)測值為13%，SO2排放值500ppm，計算出的過?？諝庀禂?shù)α＝，那么根據(jù)國標(biāo)規(guī)定，折算后的SO2排放濃度＝SO2實(shí)測值×（α實(shí)際值/α國標(biāo)值）＝500ppm×（）=722ppm舉例：燃油燃?xì)忮仩t，鍋爐測試時O2實(shí)測值為13%，SO2排放值500ppm，計算出的過?？諝庀禂?shù)α＝，那么根據(jù)國標(biāo)規(guī)定，折算后的SO2排放濃度＝SO2實(shí)測值×（α實(shí)際值/α國標(biāo)值）＝500ppm×（）=1083ppm空預(yù)器漏風(fēng)依據(jù)下列各式計算：α=21/21-o2Δα=α2-α1δ=。天津供暖空氣預(yù)熱器價格板式空氣預(yù)熱器每個模塊均自帶外框架。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江安全可靠空氣預(yù)熱器電話,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.jpg"></div><p style="text-indent:25px"> 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(yùn)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(diǎn)：（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(jī)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(yùn)行半年后阻力增加約50%，對引風(fēng)機(jī)也會造成較大影響。</p><p> 【摘要】：為了適應(yīng)環(huán)保新要求，SCR**排放改造后，造成空預(yù)器壓差偏大，引起風(fēng)機(jī)耗電增加、喘振失速等問題，必須對空預(yù)器進(jìn)行升溫或在線水沖洗。經(jīng)過多次升溫消除空預(yù)器堵塞和在線水沖洗，積累了經(jīng)驗(yàn)。空氣預(yù)熱器堵灰還會造成鍋爐排煙溫度升高,風(fēng)煙系統(tǒng)阻力增加，一次風(fēng)、二次風(fēng)正壓側(cè)和煙氣負(fù)壓側(cè)的壓差增大，增加了空氣預(yù)熱器漏風(fēng)，堵灰嚴(yán)重還會影響鍋爐的帶負(fù)荷能力。1.空預(yù)器堵塞的一般原因鍋爐燃煤煤種不符合設(shè)計值煤種含硫量過高。會引起煙氣**的降低，導(dǎo)致空預(yù)器冷端結(jié)露而造成腐蝕。燃煤低位發(fā)熱量過低，會造成燃煤量、煙氣量增大，增加了空預(yù)器阻力?；曳诌^高，造成鍋爐各受熱面積灰及磨損嚴(yán)重。揮發(fā)分過高，引起灰熔點(diǎn)下降，更容易結(jié)焦。鍋爐啟動時制粉系統(tǒng)投入不當(dāng)鍋爐啟動過程中，采用小油點(diǎn)火，或是啟動磨煤機(jī)時，爐膛溫度低，煤粉燃燒相對較差，勢必會造成飛灰可燃物大量增加。大量或者長時間投運(yùn)油時，未燃盡的油污及未燃燒的煤粉進(jìn)入空預(yù)器增加了堵灰的風(fēng)險?？疹A(yù)器吹灰介質(zhì)未達(dá)到設(shè)計值空預(yù)器采用蒸汽吹灰時，疏水不暢或時間過短，造成空預(yù)器吹灰蒸汽過熱度不足，吹灰效果差。有資料指出，空預(yù)器吹灰蒸汽過熱度應(yīng)保持在111-130℃。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="浙江安全可靠空氣預(yù)熱器電話,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg"></div><p> 空預(yù)器吹灰壓力、疏水溫度，脫硝催化劑出口氨逃逸等表計的檢測維護(hù)，保證指示準(zhǔn)確?？疹A(yù)器檢修中要通過校直大軸、修復(fù)密封片、利用新型密封技術(shù)等降低空預(yù)器漏風(fēng)率，提高空預(yù)器出口排煙溫度。C級及以上計劃檢修時，根據(jù)空預(yù)器腐蝕、積灰情況把蓄熱元件拆包徹底清洗，冷、熱端蓄熱元件復(fù)裝時調(diào)換位置使用。部分電廠聘請專業(yè)清洗公司用高壓射流清洗車對空預(yù)器蓄熱元件在不吊出的情況下進(jìn)行沖洗。空預(yù)器堵塞嚴(yán)重的，要分析蓄熱元件高度和直徑設(shè)計是否合理，必要時進(jìn)行大通道蓄熱元件換型改造（改成L型直通道），或進(jìn)行空預(yù)器增加直徑改造。投用暖風(fēng)器或熱風(fēng)再循環(huán)系統(tǒng)，將對機(jī)組經(jīng)濟(jì)性產(chǎn)生不利影響，機(jī)組煤耗將上升1-3g/kWh，因此，在冷端綜合溫度（或冷端平均溫度）滿足要求的情況下，應(yīng)及時停用暖風(fēng)器或熱風(fēng)再循環(huán)系統(tǒng)，防止過量投入造成能耗增加。板式空氣預(yù)熱器是一種冶金行業(yè)經(jīng)常使用的節(jié)能、環(huán)保設(shè)備。浙江安全可靠空氣預(yù)熱器電話</p><p style="text-indent:25px">板式空氣預(yù)熱器是上海板換機(jī)械設(shè)備有限公司主要產(chǎn)品之一。浙江安全可靠空氣預(yù)熱器電話</p><p> 上海板換機(jī)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(jī)械固定形成板束，整機(jī)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(qiáng)，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?shí)現(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(shí)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，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。浙江安全可靠空氣預(yù)熱器電話</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2897687.html</p></div></div></div></div></div><div id="f15hv1j" class="page-right twoColRt"><div id="nhprlnj" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vpl1lxv" 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" 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