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<div class="vnrthjv" id="content">有機廢氣管理是指用多種技術(shù)措施，經(jīng)過(guò)不同途徑削減石油損耗、削減有機溶劑用量或排氣凈化以消除有機廢氣污染。有機廢氣污染源分布廣泛。為避免污染，除削減石油損耗、削減有機溶劑用量以削減有機廢氣的發(fā)生和排放外，排氣凈化是現在切實(shí)可行的管理途徑。常用的辦法有吸附法、吸收法、催化焚燒法、熱力焚燒法等。選用凈化辦法時(shí)，應依據具體情況由縣選用費用低、耗能少、無(wú)二次污染的辦法，盡量做到化害為利，充分收回使用成分和余熱。多數情況下，石油化工業(yè)因排氣濃度高，選用冷凝、吸收、直接焚燒等辦法；涂料施工、印刷等職業(yè)因排氣濃度低，選用吸附、催化焚燒等辦法。<br /> 　　管理辦法：<br /> 　　1、冷凝收回法：把有機廢氣直接導入冷凝器經(jīng)吸附、吸收、解板、分離，可收回有價(jià)值的有機物，該法適用于有機廢氣濃度高、溫度低、風(fēng)量小的工況，需求隸屬冷凍設備，首要應用于制藥、化工職業(yè)，印刷企業(yè)較少選用。<br /> 　　2、吸收法：一般選用物理吸收，即將廢氣引入吸收液進(jìn)凈化，待吸收液飽滿(mǎn)后經(jīng)加熱、解析、冷凝收回；本法適用于大氣量、低溫度、低濃度的廢氣，但需裝備加熱解析收回設備，設備體積大、出資較高。<br /> 　　一般選用活性炭吸附法：經(jīng)過(guò)活性炭吸附廢氣，當吸附飽滿(mǎn)后，活性炭脫附再生，將廢氣吹脫后催化焚燒，轉化為無(wú)害物質(zhì)，再生后的活性炭繼續運用。當活性炭再生到必定次數后，吸附容量明顯下降，則需求再生或更新活性炭。<br /> <p> 　　活性炭是現在處理有機廢氣運用最多的辦法，對苯類(lèi)廢氣具有良好的吸附功能，但對烴類(lèi)廢氣吸附性較差。首要缺陷是運行成本較高，不適合于濕度大的環(huán)境，但就現在市場(chǎng)應用來(lái)說(shuō)，選用活性炭吸附最為常用?；钚蕴窟x用最多為：活性炭顆粒及活性炭纖維，選用活性炭顆粒價(jià)格比較便宜，但效果差些，相比來(lái)說(shuō)選用活性炭纖維價(jià)格相對高些，效果好些。 </p> <p> <img src="UpLoadFile/image/20190416/20190416095511191119.jpg" width="300" height="400" alt="廣東環(huán)保工程公司" /> </p> 　　有機氣體專(zhuān)用活性碳：<br /> 　?。ㄒ唬?、比表面積大，有效吸附量高。由于同樣重量的活性炭的表面積是煤質(zhì)活性炭顆粒的近十倍，所以需求填充的活性炭的重量十分小，但是吸附功率卻十分高，依據所處理廢氣的有機氣體含量和其它物理特性的不同，吸附功率在85％至98％之間，多級吸附工藝可以達到99.99％,遠遠高于一般活性碳顆粒吸附法的最高吸附率88％，并且體積及總重量也都很小。<br /> 　?。ǘ?、吸附﹑脫附行程短，速度快；脫附﹑再生耗能低?；钚蕴繉τ袡C氣體吸附量比一般顆粒狀活性炭(GAC)大幾倍至幾十倍，對無(wú)機氣體也有很好的吸附能力，并能保持較高的吸附脫附速度和較長(cháng)的運用壽命。如用水蒸氣加熱10-30分鐘，即可徹底脫附，耐熱功能好，在惰性氣體中耐高溫1000℃以上，在空氣中著(zhù)火點(diǎn)達450℃以上。<br /> 　?。ㄈ?、形狀可變，運用便利。有柱狀，球形顆粒，所以替換起來(lái)十分便利，不會(huì )對人體造成任何損害。<br /> 　?。ㄋ模?、可依據需求出產(chǎn)出具有特殊功能的專(zhuān)用活性炭；強度好，不會(huì )造成二次污染。<br /> 　　3、直接焚燒法：使用燃氣或燃油等輔助燃料焚燒，將混合氣體加熱，使有害物質(zhì)在高溫效果下分解為無(wú)害物質(zhì)；本法工藝簡(jiǎn)略、出資小，適用于高濃度、小風(fēng)量的廢氣，但對安全技術(shù)、操作要求較高。<br /> 　　4、催化焚燒法：把廢氣加熱經(jīng)催化焚燒轉化成無(wú)害無(wú)臭的二氧化碳和水；本法起燃溫度低、節能、凈化率高、操作便利、占地面積少、出資出資較大，適用于高溫或高濃度的有機廢氣。<br /> 　　5、吸附法：<br /> 　?。?）直接吸附法：有機廢氣經(jīng)活性炭吸附，可達95%以上的凈化率，設備簡(jiǎn)略、出資小，但活性炭替換頻頻，添加了裝卸、運送、替換等作業(yè)程序，導致運行費用添加。<br /> 　?。?）吸附-收回法：使用纖維活性炭吸附有機廢氣，在挨近飽滿(mǎn)后用過(guò)熱水蒸汽反吹，進(jìn)行脫附再生；本法要求提供必要的蒸汽量。<br /> 　?。?）新式吸附-催化焚燒法：此法綜合了吸附法及催化焚燒法的長(cháng)處，選用新式吸附材料（蜂窩狀活性炭）吸附，在挨近飲和后引入熱空氣進(jìn)行脫附、解析，脫附后廢氣引入催化焚燒床無(wú)焰焚燒，將其徹底凈化，熱氣體在系統中循環(huán)運用，大大下降能耗。本法具有運行穩定牢靠、出資省、運行成本低、修理便利等特點(diǎn)，適用于大風(fēng)量、低濃度的廢氣管理，是現在國內管理有機廢氣較老練、實(shí)用的辦法。<br /> 　　文章源自：廣東環(huán)保工程公司 <a href="../" target="_blank">http://m.wxbaozhenjx.com/</a><br /></div> <div id="zpbnpfh" class="flickr"></div> <div class="vdptvpb" id="pageview" class="clear"> <ul> <li><a href="content.asp?id=997&tp=Free001" title="Previous">上一條：工業(yè)廢水處理要遵守什么原則</a></li> <li><a href="content.asp?id=995&tp=Free001" title="Next">下一條：不同氣體處理要注意什么</a></li> </ul> </div> </div></p></div> </div><div id="rrvpfrt" class="clear" style="height:30px;"></div></div></div></div> <div class="vxrdrth" id="fft"> <div class="rbxzvzr" id="indexb"> <img src="Template/Free001/Images/hsewm_41.jpg" border="0" align="absmiddle" style="float:right; margin-top:50px;"/> <div class="zrlxfrt" 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