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href="http://www.cdcfah.com/cp/third-crsbje_qtcrsbpw/">其他傳熱設(shè)備</a>?西藏空氣預(yù)熱器推薦咨詢上海板換機(jī)械設(shè)備供應(yīng)</p><div id="m2t8xmj" class="leftbox clearfix"><h1>西藏空氣預(yù)熱器推薦咨詢上海板換機(jī)械設(shè)備供應(yīng)</h1><div id="zqxeq3l" class="proBig"><div id="7vxzwnp" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fuby3el" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qf2f7wo" 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>西藏空氣預(yù)熱器,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-11 07:07:10</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="dsmj2km" 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(yáng)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="2fro77u" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="q8ji4oq" 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，西藏空氣預(yù)熱器，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)，***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，西藏空氣預(yù)熱器。因此必須嚴(yán)格控制氨泄漏量，西藏空氣預(yù)熱器，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)熱器怎么維修？西藏空氣預(yù)熱器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220424328769531/3189655.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)用盤車手柄進(jìn)行手動(dòng)盤車。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。重慶空氣預(yù)熱器哪家便宜在一些焚燒爐系統(tǒng)中用板式空氣預(yù)熱器提高系統(tǒng)效率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><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(wèn)題，必須對(duì)空預(yù)器進(jìn)行升溫或在線水沖洗。經(jīng)過(guò)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)?？諝忸A(yù)熱器堵灰還會(huì)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(huì)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(jì)值煤種含硫量過(guò)高。會(huì)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(guò)低，會(huì)造成燃煤量、煙氣量增大，增加了空預(yù)器阻力?；曳诌^(guò)高，造成鍋爐各受熱面積灰及磨損嚴(yán)重。揮發(fā)分過(guò)高，引起灰熔點(diǎn)下降，更容易結(jié)焦。鍋爐啟動(dòng)時(shí)制粉系統(tǒng)投入不當(dāng)鍋爐啟動(dòng)過(guò)程中，采用小油點(diǎn)火，或是啟動(dòng)磨煤機(jī)時(shí)，爐膛溫度低，煤粉燃燒相對(duì)較差，勢(shì)必會(huì)造成飛灰可燃物大量增加。大量或者長(zhǎng)時(shí)間投運(yùn)油時(shí)，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(xiǎn)?？疹A(yù)器吹灰介質(zhì)未達(dá)到設(shè)計(jì)值空預(yù)器采用蒸汽吹灰時(shí)，疏水不暢或時(shí)間過(guò)短，造成空預(yù)器吹灰蒸汽過(guò)熱度不足，吹灰效果差。有資料指出，空預(yù)器吹灰蒸汽過(guò)熱度應(yīng)保持在111-130℃。 </p><p> 國(guó)內(nèi)部分進(jìn)行煙氣脫硝改造機(jī)組對(duì)空預(yù)器低溫段元件鍍搪瓷，空預(yù)器冷段換熱元件即使采用鍍搪瓷元件，如果沒(méi)有有效的吹灰清洗裝置相配套，同樣會(huì)發(fā)生嚴(yán)重的堵灰。搪瓷鍍層能***降低***氫氨的結(jié)垢速率，但如鍍層因加工質(zhì)量而損裂，將不利于防止***氫氨的吸附。氨逃逸濃度過(guò)高氨逃逸濃度越大，空預(yù)器阻力增加的越快。煙氣脫硝裝置運(yùn)行過(guò)程中，除了極端工況造成短時(shí)間內(nèi)過(guò)量噴氨外。當(dāng)氨噴射系統(tǒng)設(shè)計(jì)不當(dāng)、煙氣流場(chǎng)分布不均勻或者噴氨格柵局部噴嘴被堵塞時(shí)，也會(huì)造成反應(yīng)器出口局部區(qū)域的氨逃逸過(guò)量。不同程度的氨逃逸是造成空預(yù)器堵塞的主要原因。對(duì)于煙氣脫硝裝置，除通過(guò)氨噴射系統(tǒng)、導(dǎo)流系統(tǒng)、混合系統(tǒng)的設(shè)計(jì)提高煙氣流場(chǎng)的分布均勻性外，日常運(yùn)行過(guò)程中，還需嚴(yán)格控制噴氨量，防止過(guò)度噴氨，并定期進(jìn)行氨噴射系統(tǒng)的噴氨流量平衡調(diào)整，防止局部噴氨過(guò)大造成氨逃逸濃度升高。3.空預(yù)器堵塞的預(yù)防為了更好地控制空預(yù)器堵塞情況，必須采取技術(shù)手段，杜絕空預(yù)器堵塞的原因，從根本上降低或者杜絕空預(yù)器堵塞情況發(fā)生。SCR**排放前的一般手段冬季加強(qiáng)暖風(fēng)器綜合治理利用停爐機(jī)會(huì)對(duì)暖風(fēng)器進(jìn)行改造，以徹底解決因暖風(fēng)器疏水不暢通引起振動(dòng)而引起內(nèi)漏?？煽紤]對(duì)暖風(fēng)器進(jìn)行改造。板式空氣預(yù)熱器使用在鋼鐵行業(yè)的煉鋼爐。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="西藏空氣預(yù)熱器,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039677734/951043.jpg"></div><p> 工業(yè)生產(chǎn)過(guò)程中會(huì)產(chǎn)生大量的廢氣以及乙二醇、一氧化碳、二氧化硫、碳?xì)浠衔锏葘?duì)人體有害的物質(zhì)。將乙二醇廢氣通入450~700℃溫度范圍的燃燒裝置中，將廢氣充分燃燒，以達(dá)到廢氣外排的標(biāo)準(zhǔn)。為充分利用系統(tǒng)中煙氣的余熱，焚燒爐前設(shè)有煙氣-廢氣換熱器，用以回收高溫?zé)煔鉄崮?，預(yù)熱廢氣溫度。由于煤氣的特殊性質(zhì)，換熱器必須保證0泄露；煤氣預(yù)熱器運(yùn)行壓力通常在10kpa左右，因此設(shè)計(jì)壓力一般為20kpa；高爐煤氣含硫量較低，一般煙氣酸**溫度在100℃左右，換熱器低溫段需使用空氣膜技術(shù)提升壁溫，避免可能的酸**腐蝕；設(shè)計(jì)時(shí)應(yīng)注意兩臺(tái)換熱器熱側(cè)阻力分配。平板板型可以使用空氣膜技術(shù)，提高系統(tǒng)安全性；平板定距柱式設(shè)計(jì)可以靈活控制設(shè)計(jì)流速及阻力損失；流場(chǎng)分布均勻，不易積灰結(jié)垢，便于清潔維護(hù)；占地面積小，尤其適合安裝空間有限的改造項(xiàng)目。上海板式空氣預(yù)熱器廠家有哪些？山東空氣預(yù)熱器工廠</p><p style="text-indent:25px">板式空氣預(yù)熱器方便清洗嗎？西藏空氣預(yù)熱器</p><p> 板式換熱器處理方法：編輯①換熱器流道中的臟物或板片結(jié)垢，對(duì)于新運(yùn)行的系統(tǒng)，根據(jù)實(shí)際情況每周清洗一次。清洗板片表面水垢（主要指CaCO3）時(shí)，選用含氨基磺酸溶液或含烏洛托品、苯胺、硝酸溶液作為清洗液，清洗溫度4O～6O℃。不拆卸設(shè)備化學(xué)浸泡清洗時(shí)，要打開(kāi)換熱器冷介質(zhì)進(jìn)、出口，或安裝設(shè)備時(shí)在介質(zhì)進(jìn)、出口接管上安裝DN25清洗口，將配好的清洗液注入設(shè)備中，浸泡后用清水清洗干凈殘留酸液，使pH≥7。拆開(kāi)清洗時(shí)，將板片在清洗液中浸泡30min。然后用軟刷輕刷結(jié)垢，用清水清洗干凈。清洗過(guò)程中應(yīng)避免損傷板片與橡膠墊。若采用不拆卸機(jī)械反沖洗方法，應(yīng)事先在介質(zhì)進(jìn)、出口管路上接一管口，將設(shè)備與機(jī)械清洗車連接，把清洗液按介質(zhì)流動(dòng)的反方向注入設(shè)備，循環(huán)清洗時(shí)間10～15min，介質(zhì)流速控制在～m/s。再用清水循環(huán)幾遍，使清水中Cl質(zhì)量濃度控制在25mg/I以下。②二次循環(huán)水比較好采用經(jīng)過(guò)軟化處理后的軟水。一般要求水中懸浮物質(zhì)量濃度不大于5mg/L、雜質(zhì)直徑不大于3mm、pH≥7。當(dāng)水溫不大于95℃時(shí)，Ca、Mg濃度應(yīng)不大于2mmol/L；當(dāng)水溫大于95℃時(shí)，Ca、Mg濃度應(yīng)不大于0．3mmol/L、溶解氧質(zhì)量濃度應(yīng)不大于0．1mg/L。③對(duì)于集中供熱系統(tǒng)，可以采用一次向二次補(bǔ)水的方法。西藏空氣預(yù)熱器</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2798138.html</p></div></div></div></div></div><div id="wm3rlxj" class="page-right twoColRt"><div id="fpuwgc2" 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