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/> <script type="text/javascript" src="http://www.shubhyatraindia.com/static/js/jquery.jqzoom-core.js"></script> <script type="text/javascript"> $(document).ready(function() { $('.jqzoom').jqzoom({ zoomType: 'standard', lens:true, preloadImages: false, alwaysOn:false, zoomWidth: 320, zoomHeight: 250 }); }); </script> <div class="product_detail" id="pd1"> <h6 style="text-align: center;"><strong>? <span style="font-size: 24px;color: #333">化工園區企業VOCs排放治理技術的評價分析</span></strong> <p class="smal-hide"><span>發布時間：2019-03-12 16:24</span> <span>點擊：<script src="/plus/count.php?view=yes&aid=198&mid=1" type='text/javascript' language="javascript"></script></span></p> </h6> <div class="wznr"><p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">以浙江省某典型化工園區為研討方針,經過對園區內化工企業的出產工藝、VOCs排放狀況及VOCs處理設備的具體調研,總結園區內企業VOCs排放特征,從技術和經濟兩方面對園區內干流VOCs辦理技術進行了剖析和評價,為化工企業挑選VOCs辦理技術提供參閱.</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> <img alt="VOCs廢氣治理" src="/uploads/allimg/190312/1-1Z312162Z5114.jpg" style="width: 411px; height: 622px;" /></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> </p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">和吸收法的技術老到度*高，出資本錢和工作本錢較低，但VOCs的去除率差別大，效果不穩定。等離子體法技術老到度不高，電暈放電方法的等離子體法出資和工作本錢較低，其他放電方法的等離子體法出資和工作本錢較高，但在現在的運用事例中整體去除效果不抱負。燃燒法包括直接燃燒法和蓄熱式熱力燃燒法(RTO)，VOCs去除率高，合適大部分中高濃度、低含氯的VOCs廢氣，但出資本錢和工作本錢高于其他處理辦法。<br /> <img alt="VOCs廢氣治理" src="/uploads/allimg/190312/1-1Z31216305E35.jpg" style="width: 404px; height: 745px;" /></span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> </p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">在出資費用和工作費用中，+的多少代表費用的凹凸(1)吸收法。吸收法是運用VOCs組分在吸收劑中的溶解性差異對不同VOCs吸收別離的技術[8]。吸收法在化工園區內運用率*高，首要原因是技術老到、工藝流程簡略、出資工作費用低?；て髽I排放的VOCs廢氣中水溶性組分，選用水噴淋吸收法具有較好的處理效果；酸性、堿性組分則可運用酸堿中和原理，分別選用堿性、酸性的噴淋液吸收。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> </p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">表2列舉了典型企業吸收法的相關方針。由于化工企業排放VOCs種類凌亂，當單級吸收處理功率有限時，可選用多級吸收方法。在調研中發現，吸收法運用時存在吸收液替換不及時等問題，會導致處理功率嚴峻下降。因而，化工企業需求及時替換并妥善處理吸收液，如有回用價值，可對吸收液進行精餾處理。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">(2)吸附法。吸附法是運用固體外表的不平衡的化學鍵力或分子引力，使VOCs其間的一種或多種組分濃縮于固體外表上，以到達別離的目的。吸附法是現在處理VOCs*常見的辦法，特別適用于處理中、低濃度、總排放量較少的VOCs ，技術老到度高。吸附法設備簡略、出資小、操作便利，但廢吸附劑需求作為固廢單獨處理。高宗江等人實測了吸附法的處理功率不超越80％，而且保證吸附劑及時替換。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">表3列舉了典型企業吸附法的相關方針。吸附法的出資本錢和工作本錢較吸收法有所增加。企業E和企業F的工作本錢會集在購買吸附劑的費用。有些企業安裝了脫附再生設備則可以降低工作本錢(如企業G)?，F在吸附法運用存在的問題是吸附劑替換不及時。假設沒有當令替換或再生，吸附劑飽滿后處理功率甚至可以降至零。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> <img alt="VOCs廢氣治理" src="/uploads/allimg/190312/1-1Z31216330K45.jpg" style="width: 478px; height: 166px;" /></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">(3)燃燒法。燃燒法是現在運用較為廣泛的VOCs辦理技術之一。本次調研中觸及的燃燒法為直接燃燒和RTO?；て髽I排放的廢氣往往溫度較高，選用燃燒法可以運用這部分熱量。直接燃燒法工藝簡略、技術老到度高，但能耗高、工作本錢高，且不適于處理含氯有機廢氣，否則易產生C1，、COCl2，、NOX、多氯二苯呋喃等有毒副產物。RTO則經過蓄熱資料收回熱量，可以到達90％～95％的熱收回率，工作費用降低。園區內選用燃燒法的企業VOCs排放組分凌亂，包括甲苯、二氯甲烷、二甲基亞砜、甲醇等十幾種，底子來自出產工藝(如精餾、反應釜等)排放的廢氣。燃燒法的處理功率一般以為可到達95％以上。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">表4列舉了燃燒法的相關方針。直接燃燒法的出資本錢低于RTO法，但工作本錢高于RTO法?，F在運用的首要問題是燃燒法出資本錢和工作本錢均較高，且存在二嗯英污染風險。<br /> <img alt="VOCs廢氣治理" src="/uploads/allimg/190312/1-1Z31216332R07.jpg" style="width: 474px; height: 143px;" /></span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> </p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">(4)等離子體法。低溫等離子體法運用高壓脈沖放電取得高能電子、離子和自由基等活性粒子可與VOCs發作效果，將VOCs轉化為CO2、H2O等無害或低害物質，從而使廢氣得到凈化。有研討標明，等離子體簡單翻開C—S和S—H，關于臭味和苯系物的凈化均具有杰出的效果。等離子體法適合處理低濃度、大風量的廢氣，但是實踐運用的處理效果一般不超越70％。表5列舉了等離子體法處理的相關方針。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255); text-align: center;"> <img alt="VOCs廢氣治理" src="/uploads/allimg/190312/1-1Z312163349C3.jpg" style="width: 481px; height: 118px;" /></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">等離子體處理設備對惡臭方針有必定的處理效果，但對VOCs凈化功率不高?，F在等離子體處理在化工園區內的運用存在的問題是企業關于其效果機理研討不夠充沛，還沒有構成規律性認識，許多企業只是在仿照這項技術，并沒有真實掌握中心機理。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <strong><span style="color: rgb(51, 51, 51);">3 結束語</span></strong></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">園區內化工企業以溶劑耗費型企業為主，VOCs廢氣排放量大且濃度較高。廢氣成分凌亂、種類繁多，廢氣排放與化工企業出產狀況息息相關，并伴有惡臭異味等，導致化工企業VOCs處理難度大。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">園區內VOCs排放辦理技術覆蓋率為85％，以吸收法及其組合工藝為主，部分企業選用活性炭吸附、燃燒法、等離子體等技術。鑒于園區內VOCs排放特征凌亂，部分企業選用的辦理技術去除效果一般。園區內正推行燃燒法等高效辦理技術，以提高vOCs處理功率。</span></p> <p style="word-wrap: break-word; margin: 5px 0px; font-family: 宋體; font-size: 14px; color: rgb(40, 40, 40); text-indent: 2em; background-color: rgb(240, 248, 255);"> <span style="color: rgb(51, 51, 51);">園區內VOCs排放辦理技術在長時間的運用過程中存在不同程度的問題，首要有辦理設備監管不力、吸附劑或吸收液替換不及時等。因而園區內企業應提高處理設備工作辦理水平，保證處理設備的正常工作。</span></p> </div> <p id="cztz">版權聲明：本網注明來源為“環亞環?！钡奈淖?、圖片內容，版權均屬本站所有，如若轉載，請注明本文出處：http://www.shubhyatraindia.com 。同時本網轉載內容僅為傳播資訊，不代表本網觀點。如涉及作品內容、版權和其它問題，請與本網站聯系，我們將在及時刪除內容。</p> <p><br></p> <span class="czt"> <li id="tjyd"> 推薦閱讀：<a class="czt" href="/style/hyxw/2020/0629/1843.html">雖然工業污染治理成效顯著但是廢氣治理仍任重道遠</a> </li> </span> <div class="page" id="qhfy">上一篇：<a href='/style/hyxw/2018/0707/136.html'>工業焊煙設備</a> 下一篇：<a href='/style/hyxw/2019/0313/200.html'>淺談廢氣處理設備的性價比</a> </div> </div> <div class="czt">您可能喜歡：</div><br> <div class="czc"> <li class="flic"> <a class="czt" href="/style/xdt/2019/1118/1206.html"> <div class="tpcd"><img src="/uploads/allimg/191118/1-19111Q40113c3-lp.jpg" alt="環亞環保給您講述煙臺p" class="tpcs"/></div> <p class="cba">環亞環保給您講述煙臺p</p> </a> </li> <li class="flic"> <a class="czt" href="/style/crsryh/2018/0702/127.html"> <div class="tpcd"><img 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