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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="uifhoac" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="veb7rvx" 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)熱器市場(chǎng)前景如何,空氣預(yù)熱器</p><p><span>***更新：</span>2021-01-01 03:06:57</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="odkhdpw" 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="8ghjplh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8jvm37x" class="box"><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，湖南空氣預(yù)熱器市場(chǎng)前景如何，將設(shè)備與機(jī)械清洗車(chē)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)，湖南空氣預(yù)熱器市場(chǎng)前景如何，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，湖南空氣預(yù)熱器市場(chǎng)前景如何。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。板式空氣預(yù)熱器使用在鋼鐵行業(yè)的煉鋼爐。湖南空氣預(yù)熱器市場(chǎng)前景如何</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器市場(chǎng)前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405031435547/8438841.jpg"></div><p> 在選擇傳熱元件時(shí)，要考慮到用戶(hù)的實(shí)際情況，從設(shè)備長(zhǎng)期安全穩(wěn)定運(yùn)行的角度出發(fā)，適應(yīng)煤種在一定范圍內(nèi)的變化，確保在使用過(guò)程中不堵灰，保持較低的排煙溫度，保證在長(zhǎng)時(shí)間的運(yùn)行過(guò)程中，鍋爐的效率保持在較高水平。而不是像某些公司一樣，*考慮單一設(shè)計(jì)煤種，在燃料變化后，無(wú)法滿(mǎn)足機(jī)組經(jīng)濟(jì)、穩(wěn)定和安全運(yùn)行的需要。元件板型的選擇需同時(shí)考慮傳熱效果、流通阻力和堵灰可能三個(gè)因素。采用傳熱效果好的傳熱元件能降**造成本，但是不一定流通阻力小或耐堵灰，造成運(yùn)行成本上升。例如某公司在預(yù)熱器冷段采用HS7、HS8等DU系列波形元件，雖然預(yù)熱器轉(zhuǎn)子重量變輕，但是當(dāng)燃料灰分變多，或用于SCR預(yù)熱器時(shí)，很容易造成堵灰，使阻力上升。傳熱效果和流通阻力往往構(gòu)成一對(duì)矛盾，因?yàn)樘岣邠Q熱效果是通過(guò)加強(qiáng)氣流通道的局部紊流狀況，即加大換熱表面波紋密度或傾斜角，但這種方式也同時(shí)加大了流通阻力系數(shù)。本著對(duì)用戶(hù)負(fù)責(zé)的態(tài)度，在選用波形和煤種的匹配上，在傳熱元件的選擇上的做法是根據(jù)燃料的特性選擇合適的傳熱元件板型，通常在預(yù)熱器熱段和中溫段選擇DU3、DN、DL等波型傳熱元件，匹配從無(wú)煙煤到褐煤燃料。廣東醫(yī)藥空氣預(yù)熱器板式空氣預(yù)熱器特點(diǎn)是什么？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器市場(chǎng)前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220405039599609/9723902.jpg"></div><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(jí)降低、引風(fēng)機(jī)電耗增大等問(wèn)題。尤其針對(duì)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(lái)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(jiǎn)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(guò)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(lái)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(lái)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(lái)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。</p><p> 隨國(guó)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(shí)，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(shí)，A、B側(cè)空預(yù)器煙氣差壓*分別為、，到4個(gè)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(shuō)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(jiān)硬。空預(yù)器運(yùn)行半年后阻力增加約50%，對(duì)引風(fēng)機(jī)也會(huì)造成較大影響。板式空氣預(yù)熱器不易積灰結(jié)垢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南空氣預(yù)熱器市場(chǎng)前景如何,空氣預(yù)熱器" src="http://tyunfile.71360.com/UploadFile/shbhjxsb/637220410558876953/2374940.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)。空預(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℃。板式空氣預(yù)熱器的作用是提高燃燒空氣溫度。四川空氣預(yù)熱器的用途和特點(diǎn)</p><p style="text-indent:25px">板式空氣預(yù)熱器用在哪里？湖南空氣預(yù)熱器市場(chǎng)前景如何</p><p style="text-indent:25px">在復(fù)雜背景下，我國(guó)機(jī)械及行業(yè)設(shè)備急需加快轉(zhuǎn)型升級(jí)，向全球產(chǎn)業(yè)鏈、價(jià)值鏈的中**環(huán)節(jié)發(fā)展;企業(yè)要強(qiáng)化管理，積極攻克**領(lǐng)域，夯實(shí)發(fā)展基礎(chǔ)，重視創(chuàng)新驅(qū)動(dòng)，加快結(jié)構(gòu)調(diào)整和升級(jí)。重大技術(shù)裝備是關(guān)系我國(guó)安全和國(guó)民經(jīng)濟(jì)命脈的基礎(chǔ)性、戰(zhàn)略性產(chǎn)品，是有限責(zé)任公司企業(yè)綜合實(shí)力和重點(diǎn)競(jìng)爭(zhēng)力的重要標(biāo)志。近年來(lái)，機(jī)械工業(yè)在重大技術(shù)裝備的自主研發(fā)中不斷取得突破，創(chuàng)新成果正逐步加入使用。板式換熱器機(jī)組，可拆式板式換熱器，焊接式板式換熱器，板式空氣預(yù)熱器產(chǎn)業(yè)的再制造已經(jīng)成為其產(chǎn)業(yè)鏈中的重要一環(huán)。它不*為客戶(hù)提供降低產(chǎn)品全生命周期成本的極優(yōu)方式，也支持了我國(guó)提倡的發(fā)展綠色循環(huán)經(jīng)濟(jì)的號(hào)召，成為工程機(jī)械行業(yè)未來(lái)發(fā)展的重要方向。通過(guò)機(jī)器人替代、軟件信息化、柔性化生產(chǎn)等方式，生產(chǎn)型企業(yè)可實(shí)現(xiàn)上下游信息透明、協(xié)作設(shè)計(jì)與生產(chǎn)，提升了生產(chǎn)服務(wù)的質(zhì)量與效率。湖南空氣預(yù)熱器市場(chǎng)前景如何</p></p><br /><p>文章來(lái)源地址: 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