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class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="2c6ommm" class="box"><p><p style="text-indent:25px">工業(yè)爐按供熱方式分為兩類：一類是火焰爐(或稱燃料爐)，用固體、液體或氣體燃料在爐內(nèi)的燃燒熱量對工件進(jìn)行加熱；第二類是電爐，重慶節(jié)能工業(yè)爐應(yīng)用，在爐內(nèi)將電能轉(zhuǎn)化為熱量進(jìn)行加熱。工業(yè)爐按熱工制度又可分為兩類：一類是間斷式爐又稱周期式爐，其特點是爐子間斷生產(chǎn)，在每一加熱周期內(nèi)爐溫是變化的，重慶節(jié)能工業(yè)爐應(yīng)用，如室式爐、臺車式爐、井式爐等；第二類是連續(xù)式爐，其特點是爐子連續(xù)生產(chǎn)，爐膛內(nèi)劃分溫度區(qū)段。在加熱過程中每一區(qū)段的溫度是不變的，工件由低溫的預(yù)熱區(qū)逐步進(jìn)入高溫的加熱區(qū)，如連續(xù)式加熱爐和熱處理爐、環(huán)形爐，重慶節(jié)能工業(yè)爐應(yīng)用、步進(jìn)式爐、振底式爐等。爐子生產(chǎn)率越高，則加熱每千克物料的單位熱量消耗也越低。重慶節(jié)能工業(yè)爐應(yīng)用</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶節(jié)能工業(yè)爐應(yīng)用,工業(yè)爐" src="https://tyunfile.71360.com/UploadFile/nabore/637382854020546875/53508.png"></div><p style="text-indent:25px">工業(yè)爐氣體燃料燃燒裝置：通常稱燒嘴，它的主要作用是按一定比例和一定的混合條件將煤氣和空氣送到爐內(nèi)燃燒（也有在燒嘴內(nèi)部燃燒的），并滿足爐內(nèi)加熱過程對火焰的要求。根據(jù)煤氣和空氣在燒嘴內(nèi)的混合情況，分為有焰和無焰燒嘴。有焰燒嘴的特點是：煤氣和空氣在燒嘴內(nèi)不進(jìn)行混合或*部分混合，噴到爐內(nèi)后再邊混合邊燃燒，因而火焰較長并有明顯的輪廓。采用有焰燒嘴時，強(qiáng)化燃燒和組織火焰的主要手段是改變煤氣和空氣的混合條件，如將煤氣和空氣分成許多細(xì)流，使煤氣流和空氣流按一定角度相交，或利用旋流裝置促使氣流加速混合等。圖1就是一種帶單管式煤氣燒嘴。無焰燒嘴的特點是：煤氣和空氣在燒嘴內(nèi)部即達(dá)到均勻混合，噴出燒嘴后能立即著火燃燒，火焰很短，沒有明顯的火焰輪廓。工業(yè)爐中常用的無焰燒嘴是噴射式燒嘴（圖2）, 它是靠煤氣的噴射作用直接從大氣中按比例吸入所需要的助燃空氣，在混合管內(nèi)混合均勻后再在耐火材料制成的燃燒道中完成燃燒反應(yīng)。重慶節(jié)能工業(yè)爐應(yīng)用工業(yè)爐的優(yōu)點：爐溫測定、監(jiān)控精度明顯提高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶節(jié)能工業(yè)爐應(yīng)用,工業(yè)爐" src="https://tyunfile.71360.com/UploadFile/nabore/637382854192353516/6336566.png"></div><p style="text-indent:25px">砌筑將向整體化和輕型化方向發(fā)展：隨著不定形耐火材料的發(fā)展，整體澆注和輕型結(jié)構(gòu)將獲更普遍的發(fā)展。采用新型耐火材料，用耐高溫陶瓷和陶瓷纖維代替耐火磚，使?fàn)t子升溫快，熱損失小。節(jié)能和環(huán)保并重。在進(jìn)行節(jié)能改造的同時：應(yīng)進(jìn)行污染治理，努力降低或消除有害廢氣和煙塵的排放。對中國而言節(jié)能是較大的環(huán)保措施之一。提高工業(yè)爐的“綠色度”：通過凋整產(chǎn)業(yè)結(jié)構(gòu)，改善能源結(jié)構(gòu)；采用世界上較先進(jìn)的科學(xué)治污方法，從源頭上**污染：不斷開發(fā)適合中國工業(yè)爐的新技術(shù)、新設(shè)備，強(qiáng)化余熱回收和資源的循環(huán)利用；強(qiáng)化立法和執(zhí)法力度；健全環(huán)保組織和提高**環(huán)保意識等途徑提高“綠色度”。</p><p style="text-indent:25px">工業(yè)爐是工業(yè)生產(chǎn)中，利用燃料燃燒或電能轉(zhuǎn)化的熱量，將物料或工件加熱的熱工設(shè)備。鍋爐也是一種工業(yè)爐。工業(yè)爐由工業(yè)爐砌體，工業(yè)爐排煙系統(tǒng)、工業(yè)爐預(yù)熱器和工業(yè)爐燃燒裝置等組成。按供熱方式分類（1）火焰爐：其按工作室的形狀可分為膛式火焰爐和回轉(zhuǎn)爐兩類。膛式火焰爐的工作室叫做爐膛，由爐底、爐墻和爐頂組成?；剞D(zhuǎn)爐（或稱為回轉(zhuǎn)窯）用于鐵礦石的直接還原、氧化鋁礦物的焙燒、黏土礦物的焙燒、以及各種散狀原料的焙燒揮發(fā)、離析和干燥作業(yè)。（2）電爐：電爐又可分為電阻爐、感應(yīng)爐和電弧爐。電爐的優(yōu)點有：爐內(nèi)氣氛容易控制，甚至可抽成真空；物料加熱快，加熱溫度高，溫度容易控制；生產(chǎn)過程容易實現(xiàn)機(jī)械化和電動化；勞動衛(wèi)生條件好；熱效率高；加熱質(zhì)量好等。 2.按熱工制度分類：間斷式爐、連續(xù)式爐。工業(yè)爐預(yù)熱器分換熱式和蓄熱式兩類。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶節(jié)能工業(yè)爐應(yīng)用,工業(yè)爐" src="https://tyunfile.71360.com/UploadFile/nabore/637382854143339844/489399.png"></div><p style="text-indent:25px">工業(yè)爐的創(chuàng)造和發(fā)展對人類進(jìn)步起著十分重要的作用。中國在商代出現(xiàn)了較為完善的煉銅爐，爐溫達(dá)到1200℃，爐子內(nèi)徑達(dá)0.8米。在春秋戰(zhàn)國時期，人們在熔銅爐的基礎(chǔ)上進(jìn)一步掌握了提高爐溫的技術(shù)，從而生產(chǎn)出了鑄鐵。1794年，世界上出現(xiàn)了熔煉鑄鐵的直筒形沖天爐。后到1864年，法國人馬丁運(yùn)用英國人西門子的蓄熱式爐原理，建造了用氣體燃料加熱的一臺煉鋼平爐。他利用蓄熱室對空氣和煤氣進(jìn)行高溫預(yù)熱，從而保證了煉鋼所需的1600℃以上的溫度。1900年前后，電能供應(yīng)逐漸充足，開始使用各種電阻爐、電弧爐和有芯感應(yīng)爐。二十世紀(jì)50年代，無芯感應(yīng)爐得到迅速發(fā)展。后來又出現(xiàn)了電子束爐，利用電子束來沖擊固態(tài)燃料，能強(qiáng)化表面加熱和熔化高熔點的材料。砌體的作用是使工業(yè)爐在加熱或熔煉過程中承受高溫負(fù)荷，減少熱量損失，抵抗化學(xué)侵蝕并具有一定的結(jié)構(gòu)強(qiáng)度。重慶節(jié)能工業(yè)爐應(yīng)用</p><p style="text-indent:25px">工業(yè)爐是工業(yè)生產(chǎn)中，利用燃料燃燒或電能轉(zhuǎn)化的熱量，將物料或工件加熱的熱工設(shè)備。重慶節(jié)能工業(yè)爐應(yīng)用</p><p style="text-indent:25px">對工業(yè)爐，爐子進(jìn)行設(shè)計或改進(jìn)時，應(yīng)根據(jù)生產(chǎn)工藝要求，盡量選用新型節(jié)能爐子。選擇合適的爐型結(jié)構(gòu)，提高機(jī)械化程度和能源利用率。通常采用的節(jié)能措施有：（1）采用圓形爐膛替代箱形爐膛，可強(qiáng)化爐膛對工件均勻傳熱的效果，減少爐壁散熱量，使?fàn)t膛形成一個熱交換系統(tǒng)，在加熱元件，爐襯和工件3者之間進(jìn)行熱交換。通過采用合理的爐膛空間和在不增大爐膛空間容積的前提下，加大爐內(nèi)壁面積，以增大熱交換面積的方式提高爐膛熱交換從而提高熱效率。（2）在爐膛內(nèi)安設(shè)風(fēng)扇，加強(qiáng)爐內(nèi)對流傳熱。特別是小型加熱爐，高速氣流可破壞停滯在工件表面阻礙傳熱和界面反應(yīng)爐氣邊界底層，起到縮短加熱時間和加快提高工件溫度的作用。（3）爐體密封，包括爐膛內(nèi)各引出構(gòu)件，爐殼，爐門等處的密封。爐體密封不嚴(yán)，將會造成到處跑火、漏火，造成能源大量浪費(fèi)、設(shè)備燒壞、環(huán)境惡劣等狀況，因此爐體密封直接影響工件品質(zhì)和能耗，同時密封也是爐內(nèi)氣氛控制的關(guān)鍵。而耐火纖維制品的出現(xiàn)，為解決爐體密封創(chuàng)造了條件，實現(xiàn)了軟密封。重慶節(jié)能工業(yè)爐應(yīng)用</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2142577.html</p></div></div></div></div></div><div id="r3hp8wp" class="page-right twoColRt"><div id="b4cbkgb" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yfzhbke" class="recomPic likePro"><a 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