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aos="fade-down" aos-duration="2000" aos-once="true" aos-delay="2000"></div> <div id="ek7pfuqu2l" class="fr" aos="slide-left" aos-duration="2000" aos-once="true"></div> </section>  <div class="ek7pfuqu2l" id="n_main"> <section id="n_jishu_xq" class="m"> <h3 id="tt">VOCs煙氣處理技術(shù)</h3> <div class="ek7pfuqu2l" id="time"><h4>2019-09-26</h4></div> <div id="ek7pfuqu2l" class="ar_article"> <p><span style="color: rgb(75, 172, 198); font-size: 18px;"> <strong><span style="color: rgb(75, 172, 198);">化產(chǎn)VOCs廢氣回爐燃燒工藝介紹 >>></span></strong></span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">化產(chǎn)區域各工段尾氣經(jīng)收集冷卻預處理后先進(jìn)入自動(dòng)壓力平衡系統，經(jīng)過(guò)集中二次除霧再配風(fēng)（空氣）進(jìn)入焦爐地下室燃燒系統。進(jìn)燃燒系統前均安裝調節、切斷、放散安全閥組，有檢修作業(yè)時(shí)互不影響，使各自系統運行穩定。尾氣管道在設計的時(shí)候充分考慮管道走向和坡度并在低位增加排液裝置，避免管道積液影響系統壓力波動(dòng)。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">各排放點(diǎn)尾氣經(jīng)源頭采集和預處理匯入各區段總支管，之后經(jīng)分區控制（鼓冷、脫硫、硫銨、粗苯和油庫區），再經(jīng)水洗降溫、酸洗、油洗后送入焦爐焚燒。</span></p><p style="text-indent: 2em;"><br/></p><p style="text-align: center;">尾氣進(jìn)焦爐前處理工藝簡(jiǎn)易流程圖</p><p style="text-align: center;"><img id="ae4c7540cf31b4901bbdb8988af6869b_img_303" src="/uploadfile/ueditor/image/20201228/1609135145445129.png" title="" alt="圖片1.png"/></p><p><br/></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;"><strong>壓力平衡自調裝置</strong></span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">對從各排污點(diǎn)收集的VOCs通過(guò)差壓分析進(jìn)行壓力均衡調整，并對收集的廢氣進(jìn)行氣液分離，然后氣體輸出進(jìn)入主收集管道。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">各工段尾氣調節閥、壓差變送器投入連鎖裝置，總管調節閥和總管壓力設定連鎖調整整個(gè)工段尾氣吸力，程序設定由主管尾氣調節閥、根據尾氣總管壓力，來(lái)自動(dòng)識別工況。開(kāi)大或關(guān)小尾氣總閥，通過(guò)自動(dòng)壓力平衡系統來(lái)實(shí)現各槽壓力穩定。氮氣閥門(mén)及時(shí)補充氮氣，使設備裝置穩定。如：粗苯槽設定尾氣壓力為500Pa，尾氣調節閥根據槽內壓力低于300Pa時(shí)，DCS系統會(huì )發(fā)出黃色警報，同時(shí)氮氣密封裝置向粗苯儲槽內通入氮氣，使系統壓力穩定，防止槽壓力波動(dòng)過(guò)大，對設備造成傷害。當槽內壓力低于或高于尾氣總管壓力時(shí)，DCS自控系統自動(dòng)識別尾氣系統工況，開(kāi)大或關(guān)小尾氣總管調節閥。同時(shí)設置壓力報警限值，超出正?？刂品秶▓缶蹈鶕F場(chǎng)工況設定），報警提示崗位人員，及時(shí)發(fā)現處理問(wèn)題。當槽內壓力低于或高于尾氣總管壓力時(shí)，DCS系統會(huì )發(fā)出紅色警報，并根據壓差，來(lái)自動(dòng)識別壓力變化，進(jìn)行自控調節。</span></p><p style="text-align: center;"><img id="ae4c7540cf31b4901bbdb8988af6869b_img_306" src="/uploadfile/ueditor/image/20201228/1609136256759380.jpg" title="" alt="圖片2.jpg"/></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">特點(diǎn)：<br/></span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">1、技術(shù)先進(jìn)成熟，運行穩妥可靠，滿(mǎn)足環(huán)保要求；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">2、采用節能，先進(jìn)的處理工藝，并降低運行成本；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">3、在保證VOCs處理效果的前提下，減少占地面積，節省工程投資；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">4、選用可靠設備和材料，確保設施長(cháng)期、安全、穩定運行；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">5、采用較高程度的自動(dòng)化控制系統，降低勞動(dòng)強度；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">6、運行維護管理方便，運轉靈活，對VOCs量、污染物濃度的變化有相應的抗沖擊能力及應變能力；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">7、尾氣凈化治理不影響焦化廠(chǎng)生產(chǎn)工藝的正常運行；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">8、VOCs處理設施盡量與原裝置一致；</span></p><p><span style="color: rgb(63, 63, 63); font-size: 18px;">9、無(wú)二次污染。</span></p><p><br/></p><p><span style="color: rgb(75, 172, 198); font-size: 18px;"><strong><span style="color: rgb(75, 172, 198);">RTO介紹 >>></span></strong></span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">RTO，是一種有機廢氣治理設備。與傳統的催化燃燒、直燃式熱氧化爐(TO)相比，具有熱效率高(≥95%)、運行成本低、能處理大風(fēng)量中低濃度廢氣等特點(diǎn)，濃度稍高時(shí)，還可進(jìn)行二次余熱回收，大大降低生產(chǎn)運營(yíng)成本。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">RTO (Regenerative Thermal Oxidizer,簡(jiǎn)稱(chēng)RTO)，蓄熱式氧化爐。其原理是在高溫下將廢氣中的有機物(VOCs)氧化成對應的二氧化碳和水，從而凈化廢氣，并回收廢氣分解時(shí)所釋放出來(lái)的熱量，三室RTO廢氣分解效率達到99%以上，</span><span style="color: rgb(63, 63, 63); font-size: 18px;">熱回收</span><span style="color: rgb(63, 63, 63); font-size: 18px;">效率達到95%以上。RTO主體結構由燃燒室、蓄熱室和切換閥等組成。</span></p><p style="text-indent: 0em;"><span style="text-indent: 2em; color: rgb(63, 63, 63); font-size: 18px;">三室RTO工作流程：</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">①待處理有機廢氣進(jìn)入1號蓄熱室的陶瓷蓄熱體(該陶瓷蓄熱體儲存了上一循環(huán)的熱量)，陶瓷蓄熱體放熱降溫，而有機廢氣吸熱升溫，廢氣離開(kāi)蓄熱室后以較高的溫度進(jìn)入氧化室，此時(shí)廢氣溫度的高低取決于陶瓷體體積、廢氣流速和陶瓷體的幾何結構。有機廢氣在氧化室中由燃燒器加熱升溫至設定的氧化溫度，使其中的VOCs成分分解成二氧化碳和水。由于廢氣已在蓄熱室內預熱，燃料耗量大為減少。氧化室有兩個(gè)作用：一是廢氣能達到設定的氧化溫度；二是有足夠的停留時(shí)間使廢氣中的VOCs充分氧化。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">②廢氣在氧化室中焚燒，成為凈化的高溫氣體后離開(kāi)氧化室，進(jìn)入2號蓄熱室(在前面的循環(huán)中已被冷卻)，放熱降溫后排出，而2號蓄熱室吸收大量熱量后升溫(用于下一個(gè)循環(huán)加熱廢氣)。凈化后的廢氣經(jīng)煙囪排入大氣，同時(shí)引小股凈化氣清掃3號蓄熱室。排氣溫度比進(jìn)氣溫度高50℃左右。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">③循環(huán)完成后，進(jìn)氣與出氣閥門(mén)進(jìn)行一次切換，進(jìn)入下一個(gè)循環(huán)，廢氣由2號蓄熱室進(jìn)入，3號蓄熱室排出。在切換之后，清掃1號蓄熱室。如此交替。</span></p><p style="text-indent: 0em;"><span style="color: rgb(63, 63, 63); font-size: 18px;"><strong>適用范圍</strong></span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">中、高濃度（低于20%LEL）、大風(fēng)量有機廢氣</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">廢氣中含有多種有機成分、或有機成分經(jīng)常發(fā)生變化</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">不適用于含有較多硅樹(shù)脂廢氣</span></p><p style="text-indent: 0em;"><span style="color: rgb(63, 63, 63); font-size: 18px;"><strong>性能特點(diǎn)</strong></span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">較高的VOC處理效率。兩床設備達到95%以上，三床設備超過(guò)99%。</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">較低運行成本。熱效率高達95%</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">不產(chǎn)生氮氧化物等二次污染（不包括廢氣中含有含氮元素的情況）</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">全自動(dòng)控制、操作簡(jiǎn)易、維護方便</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">運行穩定可靠</span></p><p style="text-indent: 2em;"><span style="color: rgb(63, 63, 63); font-size: 18px;">使用壽命長(cháng)，維修保養簡(jiǎn)單</span></p><p style="text-align: center;"><img id="ae4c7540cf31b4901bbdb8988af6869b_img_307" src="/uploadfile/ueditor/image/20201228/1609138630283848.png" title="圖片4.png" alt="圖片4.png" width="800" height="467" border="0" vspace="0" style="width: 800px; height: 467px;"/></p><p><span style="color: rgb(75, 172, 198);"><strong><span style="font-size: 16px;"><br/></span></strong></span></p><p><span style="color: rgb(75, 172, 198);"><strong><span style="font-size: 16px;"><br/></span></strong></span></p><p><span style="color: rgb(75, 172, 198); font-size: 18px;"><strong><span style="color: rgb(75, 172, 198);">RCO催化燃燒技術(shù)介紹 >>></span></strong></span></p><p><span style="font-size: 18px; color: rgb(63, 63, 63);"><strong>催化燃燒的基本原理</strong></span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">催化燃燒是典型的氣-固相催化反應，其實(shí)質(zhì)是活性氧參與深度氧化作用。在催化燃燒過(guò)程中，催化劑的作用是降低反應的活化能，同時(shí)使反應物分子富集于催化劑表面，以提高反應速率。借助催化劑可使有機廢氣在較低的起燃溫度條件下發(fā)生無(wú)焰燃燒，并氧化分解為CO2和H2O，同時(shí)放出大量熱。</span></p><p><span style="font-size: 18px; color: rgb(63, 63, 63);"><strong>催化燃燒的特點(diǎn)</strong></span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">起燃溫度低，節省能源。</span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">有機廢氣催化燃燒與直接燃燒相比，具有起燃溫度低、能耗低的特點(diǎn)。在某些情況下，催化燃燒達到起燃溫度后便無(wú)需外界供熱。</span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">適用范圍廣</span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">催化燃燒可以處理烴類(lèi)有機廢氣及惡臭氣體。對于有機化工、涂料、絕緣材料等行業(yè)排放的低濃度、多成分、無(wú)回收價(jià)值的廢氣，采用吸附-催化燃燒法的處理效果。</span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">處理效率高，無(wú)二次污染</span></p><p style="text-indent: 2em;"><span style="font-size: 18px; color: rgb(63, 63, 63);">用催化燃燒法處理有機廢氣的凈化率一般都在95%以上，終產(chǎn)物為CO2和H2O （雜原子有機化合物還有其他燃燒產(chǎn)物），且由于燃燒溫度低，能大量減少NOX的生成，因此不會(huì )造成二次污染。</span></p><p style="text-align: center;"><img id="ae4c7540cf31b4901bbdb8988af6869b_img_308" src="/uploadfile/ueditor/image/20201228/1609138798630777.png" title="圖片5.png" alt="圖片5.png" width="800" height="600" border="0" vspace="0" style="width: 800px; height: 600px;"/></p> </div> </section> </div>   <footer id="footer"> <div 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