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src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cbtq3m3" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vzwya7w" 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>產品關鍵詞：</span>浙江空氣預熱器代理銷售價格,空氣預熱器</p><p><span>***更新：</span>2020-08-17 01:12:15</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="aeli7jt" 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="uebdamj" class="page-proshow02"><p class="title">詳細說明</p><div id="ixproqs" class="box"><p><p> 技術領域本實用新型涉及電站鍋爐空預器運行安全技術領域，特別涉及一種有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)。背景技術：目前，部分燃煤鍋爐排煙溫度低于設計值，導致空氣預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、引風機電耗增大等問題。尤其針對裝設有mggh系統(tǒng)的機組，單純利用空氣預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）技術實現(xiàn)要素：本實用新型為了彌補現(xiàn)有技術的不足，提供了一種結構簡單，浙江空氣預熱器代理銷售價格、設計合理的有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)。本實用新型是通過如下技術方案實現(xiàn)的：一種有效緩解空預器***氫銨堵塞的聯(lián)合系統(tǒng)，包括安裝在空氣預熱器出口至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；安裝在送風機出口冷風道內的蒸汽暖風器，用來加熱鍋爐送風；安裝在蒸汽暖風器出口至空氣預熱器入口風道之間的水媒式暖風器，浙江空氣預熱器代理銷售價格，用來進一步提高鍋爐送風溫度。本實用新型采用前置煙冷器聯(lián)合水媒式暖風器和蒸汽暖風器共同加熱鍋爐送風。蒸汽暖風器采用旋轉式，浙江空氣預熱器代理銷售價格，可根據(jù)環(huán)境溫度和機組負荷進行調整，減少風機電耗。前置煙冷器回收部分煙氣余熱。板式空氣預熱器使用在裂解爐。浙江空氣預熱器代理銷售價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江空氣預熱器代理銷售價格,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220412821406250/101176.jpg"></div><p> 底梁還通過底部軸承凳板支撐著空預器轉動部件的載荷。底梁還支撐端柱、底部扇形板和底部扇形板支板的重量。底部過渡煙風道的重量由底部結構承受。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構三分倉結構包括三分倉扇形板和三分倉扇形板支板等，布置在轉子頂部和底部的空氣一側，內緣對接在項、底結構的扇形板和翼板上，外緣則焊接道支撐在轉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，將空氣側分隔成一次風和二次風。8、過渡煙風道過渡煙風道位于轉子熱端和冷端的煙氣側和空氣側，其作用是將氣流導入和引出轉子。三分倉布置的風道又被進一步分為二次風道和一次風道。過渡煙風道連接在轉子外殼平板以及頂?shù)捉Y構上。為保證空預器結構合理受力，所有過渡煙風道內均設置內撐管。9、轉子驅動裝置轉子由中心驅動裝置驅動，驅動裝置直接與轉子頂部端軸相連。兩臺電機均能以正、反兩個方向驅動空預器，只有在空預器不帶負荷時才允許改變驅動方向。兩臺驅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動軸軸上并用鎖緊盤固定。終級減速箱一側裝有扭矩臂。江蘇空氣預熱器生產廠家板式空氣預熱器是上海板換機械設備有限公司主要產品之一。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江空氣預熱器代理銷售價格,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg"></div><p> 吹灰器先連續(xù)前進至**前端，然后按步退10mm停留52s（轉子轉動一圈）的方式循環(huán)吹掃，直至退到***端執(zhí)行完一個吹掃流程。一個吹掃流程的用時約。在就地控制柜上停止高壓水泵，在程控作用下，氣動卸荷閥先打開，延時120s后電機停止。關閉高壓水管路中通往#2機組的閥門和通往A側空預器的閥門。打開底部吹灰器蒸汽進口管道上的閥門，接通蒸汽吹灰通道。，對B側空預器進行沖洗。注意事項：，可先短時間地進行試驗性沖洗。在檢查機組運行情況正常后，再逐步延長試驗時間，觀察空預器驅動電機電流、空預器阻力、排煙溫度、煙道排污情況及除塵器運行是否正常。觀察和記錄高壓水沖洗時間、壓力、空預器在沖洗前后機組負荷、煙氣和空氣側差壓、送風機和引風機電流、爐膛壓力、熱風和排煙溫度等參數(shù)。℃，應該及時調整沖洗側煙氣流量，提高煙溫，若持續(xù)下降至110℃，則應停止在線水沖洗。，即使在觀察到空預器阻力不再持續(xù)下降時，仍需再沖洗一到兩次。換熱元件沖洗得越干凈，下次沖洗的周期越長，應在就地控制箱上將密封風機啟動，以保護噴嘴不被堵塞。（進、出口有壓力表），當進水壓力小于3bar時，應停泵清洗濾網(wǎng)，以免吸水不暢引起泵的異常震動。。</p><p> 投入暖風器或熱風再循環(huán)努力控制空預器綜合冷端溫度不低于目標溫度?？疹A器出口綜合冷端溫度低于目標值時，優(yōu)先采用降低磨煤機出口溫度，適當增加一次風比例（注意鍋爐燃燒和飛灰含碳量的變化情況），以提高空預器出口排煙溫度。空預器蒸汽吹灰疏水溫度控制在比吹灰母管壓力對應的飽和溫度高5-20℃范圍內，空預器實際排煙溫度高于目標綜合冷端溫度時，取下限，否則取上限。安裝并運行脫硝裝置的鍋爐，要防止局部或部分時段噴氨過量引起的氨逃逸量超標(≯3ppm)。優(yōu)化鍋爐配風，利用煙氣再循環(huán)，防止過氧（必要時根據(jù)CO生成量適度控制低氧）燃燒和爐膛局部溫度過高，減少爐內SO3的生成?？疹A器煙氣側差壓超過設計值或空預器冷端溫度低于目標溫度時，應增加吹灰頻次，煙氣側差壓超過，提高空預器冷端吹灰器彈簧閥后壓力（比較高至）加強吹灰，當差壓恢復正常值范圍內，逐漸恢復正常吹灰壓力，防止吹損蓄熱元件。加強鍋爐暖風器、熱風再循環(huán)、空預器扇形板自動調整裝置設備的運行維護，保證設備運行良好。暖風器、鍋爐受熱面（特別是省煤器）泄漏后要及時隔離或停爐處理?？疹A器停爐進行水沖洗后，啟動點火前要充分烘干。要加強空預器進出口差壓、溫度。上海板式空氣預熱器廠家有哪些？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江空氣預熱器代理銷售價格,空氣預熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 可選用搪瓷鍍層換熱元件。在運行維護過程中，為減少***氫氨對機組安全運行的影響，應從以下幾方面開展工作：（1）嚴格控制氨逃逸率。應通過脫硝性能試驗，對脫硝出口進行全斷面氨逃逸率檢測，比對在線儀表，保證在線儀表準確反映實際情況。（2）建立脫硝系統(tǒng)定期試驗制度，包括流場均勻性試驗，催化劑活性試驗。特別是流場試驗。在催化劑運行2至3年后，催化劑活性必然降低。同時，因催化劑磨損、孔等原因，造成局部氨逃逸率超標，將進一步加快空預器冷段***氫氨的沉積。通過流場均勻性試驗，能及時掌握催化劑局部失效引起氨逃逸率局部增加的狀況，通過調整噴氨流量分布，避免氨逃逸率局部超標。（3）控制入爐煤硫份。由于運行中煙氣流經(jīng)催化劑后，煙氣中SO2氧化為SO3的比率基本不變，因而，隨入爐煤硫份的增加，***氫氨的生成物增加，只能通過控制入爐煤中的硫份來控制***氫氨。（4）加強空預器吹灰，并及時進行空預器清理工作。由于一旦發(fā)生***氫氨沉積，空預器堵塞發(fā)展較快，因此，要充分利用停爐機會檢查空預器堵塞情況，一旦發(fā)現(xiàn)有***氫氨沉積，應立即采取措施，將空預器傳熱元件清理干凈。用板式空氣預熱器回收高溫煙氣熱能，預熱廢氣溫度。江蘇空氣預熱器生產廠家</p><p style="text-indent:25px">板式空氣預熱器能夠在相同的設計條件下提高空氣預熱溫度。浙江空氣預熱器代理銷售價格</p><p> 因此，空預器堵塞的原因可以確定為因脫硝系統(tǒng)逃逸的氨與煙氣中的三氧化硫反應生成***氫氨，并在空預器冷段沉積，造成空預器堵塞?？疹A器蓄熱元件清理方法空預器解體檢修后，按無脫硝系統(tǒng)運行時的空預器清理方案，一般是進行手工清理。由于無脫硝系統(tǒng)發(fā)生空預器積灰堵塞，均為干灰，人工用鋼絲刷等清理較為方便。但由脫硝系統(tǒng)運行后，空預器堵塞物含***氫氨，質地堅硬，人工采用電動鋼絲頭清理仍非常困難，現(xiàn)場處理經(jīng)驗表明，清理一片蓄熱元件需45分鐘，不采取措施將嚴重拖延大修進度?，F(xiàn)場通過用工業(yè)沖洗浸泡的方法仍不能提高清理速度，后采用化學溶液浸泡后，將元件盒解包，再用高壓水槍沖洗的方法，才有效解決清理的問題。經(jīng)化學清洗后，冷端蓄熱元件均得到徹底清理。實踐經(jīng)驗表明：對于給定的SO2濃度和溫度，就實際生成的SO3量而言，SO3的生成率幾乎不變。在脫硝過程中由于氨的不完全反應，SCR煙氣脫硝過程發(fā)生氨逃逸是必然的，并且氨逃逸隨時間會發(fā)生變化，氨逃逸率主要取決于以下因素：(1)注入氨流量分布均勻情況；(2)設定的NH3/NOx摩爾比；(3)催化劑堵塞情況；(4)催化劑老化情況。反應生成的SO3進一步同煙氣中逃逸的氨反應，生成***氫氨或***氨。浙江空氣預熱器代理銷售價格</p><p style="text-indent:25px">上海板換機械設備有限公司成立于2005-11-30，是一家生產型的公司。公司自成立以來，以質量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下[ "板式換熱器機組", "可拆式板式換熱器", "焊接式板式換熱器", "板式空氣預熱器" ]深受客戶的喜愛。公司秉持誠信為本的經(jīng)營理念，在機械及行業(yè)設備深耕多年，以技術為先導，以自主產品為**，發(fā)揮人才優(yōu)勢，打造機械及行業(yè)設備質量品牌。在社會各界的鼎力支持下，經(jīng)過公司所有人員的努力，公司自2005-11-30成立以來，年營業(yè)額達到1億元以上。</p></p><br /><p>文章來源地址: 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