亚洲午夜精品一区二区三区_VOCs來(lái)源_山東明晟環(huán)?？萍加邢薰?/title> <link href="/css/bootstrap.min.css" rel="stylesheet"> <link href="/css/responsive-nav.css" rel="stylesheet"> <link href="/css/style.css" rel="stylesheet" type="text/css"/> <link href="/css/content.css" rel="stylesheet" type="text/css"/>  <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <div id="6wsg0" class="pl_css_ganrao" style="display: none;"><abbr id="6wsg0"></abbr><dd id="6wsg0"></dd><cite id="6wsg0"></cite><acronym id="6wsg0"><rt id="6wsg0"><pre id="6wsg0"></pre></rt></acronym><td id="6wsg0"><code id="6wsg0"><strike id="6wsg0"></strike></code></td><menu id="6wsg0"></menu><s id="6wsg0"></s><tr id="6wsg0"><abbr id="6wsg0"><nav id="6wsg0"></nav></abbr></tr><tfoot id="6wsg0"></tfoot><optgroup id="6wsg0"></optgroup><input id="6wsg0"></input><strike id="6wsg0"></strike><th 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href="/">首頁(yè)</a>><a href="">VOCs治理</a>><a href="javascript:;">VOCs來(lái)源</a> </div> </div> <div id="x44bvwc1ic" class="row"> <div id="x44bvwc1ic" class="r_bt col-md-12">VOCs來(lái)源</div> </div> <div id="x44bvwc1ic" class="row"> <div id="x44bvwc1ic" class="col-md-12"> <p style="background:#FFFFFF;padding:0px;line-height:1.75em;text-indent:0em;margin-top:9px;margin-right:0px;margin-bottom:25px;"><span style="font-family:"noto sans cjk jp regular";font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">VOCs</span><span style="font-family:"宋體","simsun";font-size:14px;">是指常溫下飽和蒸汽壓大于</span><span style="font-family:"宋體","simsun";font-size:14px;">133.32 Pa</span><span style="font-family:"宋體","simsun";font-size:14px;">、常壓下沸點(diǎn)在</span><span style="font-family:"宋體","simsun";font-size:14px;">50-260℃</span><span style="font-family:"宋體","simsun";font-size:14px;">以下的有機化合物，或在常溫常壓下任何能揮發(fā)的有機固體或液體。</span></span></p><p style="background:#FFFFFF;padding:0px;line-height:1.75em;text-indent:0em;margin-top:9px;margin-right:0px;margin-bottom:25px;"><span style="font-family:"noto sans cjk jp regular";font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;"><span style="font-family:"noto sans cjk jp regular";font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;"><span style="font-family:"noto sans cjk jp regular";font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">按照化學(xué)結構來(lái)講，VOCs</span><span style="font-family:"宋體","simsun";font-size:14px;">可分為八類(lèi)：烷類(lèi)、芳烴類(lèi)、烯類(lèi)、鹵烴類(lèi)、酯類(lèi)、醛類(lèi)、酮類(lèi)和其他。它的主要成分有烴類(lèi)、鹵代烴、氧烴和氮烴，包括苯系物、有機氯化物、氟里昂系列、有機酮、胺、醇、醚、酯、酸和石油烴化合物等。</span></span><span style="font-family:"宋體","simsun";font-size:14px;">具體有</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">芳香類(lèi)碳氫化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（苯、甲苯、二甲苯、苯乙烯等），</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">脂肪類(lèi)碳氫化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（丁烷、正丁烷、汽油等），</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">鹵代烴</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（四氯化碳、氯仿、氯乙烯、氟利昂等），</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">醇、醛、酮、多元醇類(lèi)化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（甲醇、丙醇、異丁醇、甲醛、乙醛、丙酮、環(huán)己酮等），</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">醚、酚、環(huán)氧類(lèi)化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（乙醚、甲酚、苯酚、環(huán)氧乙烷、環(huán)氧丙烷等）、</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">酯、酸類(lèi)化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（乙酸乙酯、乙酸丁酯等）、</span><strong><span style="font-family:"宋體","simsun";font-size:14px;">胺、腈類(lèi)化合物</span></strong><span style="font-family:"宋體","simsun";font-size:14px;">（二甲基甲酰胺、丙烯腈等）以及其他（甲基溴、氟氯碳化合物等）等８類(lèi)。</span></span></span></span></span></p><p style="text-align:center;text-indent:0em;"><span style="font-family:宋體, simsun;font-size:14px;"><img width="600" height="286" title="圖片1.png" style="width:600px;height:286px;float:none;" src="/uploadfiles/image/2020/12/20201222104112_951.png" border="0" hspace="0" /><br /></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><strong><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">1. 煤化工企業(yè)</span><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">VOCs氣體來(lái)源</span><br style="padding:0px;box-sizing:border-box;" /></strong></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="font-family:"宋體","simsun";">煤化工過(guò)程中產(chǎn)生的廢氣主要來(lái)源于煤制焦和煤制氣這兩個(gè)過(guò)程。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-weight:700;box-sizing:border-box;">1.1 </span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">煤制焦廢氣</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="font-family:"宋體","simsun";">主要來(lái)自于對于煤炭的裝煤、煉焦、化產(chǎn)回收過(guò)程。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="font-family:"宋體","simsun";">在裝煤的階段，煤炭原料在高溫下與大氣直接接觸，會(huì )產(chǎn)生大量的煙塵、多種對人體有害的有機多環(huán)芳香烴類(lèi)氣體；</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="font-family:"宋體","simsun";">煤</span><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">焦化</span><span style="font-family:"宋體","simsun";font-size:14px;">VOCs廢氣主要來(lái)源于</span></span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">化產(chǎn)區域和污水處理區域</span></span><span style="font-family:"宋體","simsun";">?；a(chǎn)區域分為</span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">冷鼓工段、脫硫工段、硫氨工段、粗苯工段</span></span><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">，</span><span style="font-family:"宋體","simsun";font-size:14px;">在不同工段內其特征污染物有所不同、排口形式不同。</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-size:14px;box-sizing:border-box;">1）冷鼓工段逸散氣主要包含氨氣、硫化氫、萘及少量的VOCs，來(lái)自于焦油貯槽、氨水槽、焦油中間槽、焦油船、地下水封槽等區域，具有排氣連續、濃度低及溫度高等特點(diǎn)。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-size:14px;box-sizing:border-box;">2）脫硫／硫銨工段逸散氣主要包含氨氣、硫化氫和少量的VOCs，來(lái)自于母液槽、再生槽和破泡沫槽等區域，具有排氣連續、氨含量高等特點(diǎn)。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-size:14px;box-sizing:border-box;">3）粗苯工段逸散氣主要包含苯系物，來(lái)自于粗苯貯槽、貧油槽、洗油槽、地下槽和粗苯計量槽等區域，具有氣量小、濃度高等特點(diǎn)。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-size:14px;box-sizing:border-box;">4）污水處理區域廢氣排放形式主要為揮發(fā)排放和氣體夾帶，主要污染物為苯系物、硫化氫和氨，來(lái)自于事故池、調節池、缺氧池、曝氣池、污泥壓濾機等區域，具有氣量大、濃度低、含水高特</span><span style="font-family:"宋體","simsun";font-size:14px;">點(diǎn)。</span></p><p style="text-align:center;text-indent:0em;"><span style="font-family:宋體;"><img width="600" height="355" title="圖片2.png" style="width:600px;height:355px;float:none;" src="/uploadfiles/image/2020/12/20201222104224_840.png" border="0" hspace="0" /></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";font-weight:700;box-sizing:border-box;">1.2 </span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">煤制氣廢氣</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:1px;margin-bottom:10px;"><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">煤制氣行業(yè)多采用固定床碎煤加壓氣化、低溫甲醇洗酸性氣凈化、甲烷合成生成天然氣工藝。根據工藝流程特點(diǎn)，</span><span style="font-family:"宋體","simsun";font-size:14px;">VOCs主要排放點(diǎn)有四處分別為：</span></span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">低溫甲醇洗酸性氣凈化后排放尾氣、煤氣水常壓儲罐呼吸廢氣、污水處理裝置散發(fā)的惡臭氣體和罐區儲罐呼吸廢氣。</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">1.2.1 </span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">低溫甲醇洗</span></span><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">排放的廢氣含有甲烷、乙烯、乙烷、丙烯、丙烷、甲醇等物質(zhì)，很難回收，如果想達到能再利用的純度，在經(jīng)濟上幾乎無(wú)法承受，因此只能采用破壞方法，即將</span><span style="font-family:"宋體","simsun";font-size:14px;">VOCs轉化為無(wú)害物質(zhì)后再排入大氣。</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">RTO和RCO的投資費用大致相當，由于RCO的燃燒溫度要低于RTO，故RCO操作費用要省，但由于此股廢氣中含有硫會(huì )導致催化劑中毒失活而不能再生，因此選用RTO較宜。</span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">1.2.2 </span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">煤氣水儲罐呼吸廢氣</span></span><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">主要是儲罐呼吸閥排出的無(wú)組織廢氣，以硫化氫和氨為主，</span><span style="font-family:"宋體","simsun";font-size:14px;">VOCs濃度高，由于受到環(huán)境溫度等的影響，流量和濃度波動(dòng)較大。</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">此股氣體不具回收價(jià)值，可以考慮采用</span><span style="font-family:"宋體","simsun";font-size:14px;">RTO直接燃燒處理。在壓降滿(mǎn)足的前提下，可以將此股氣體通過(guò)管道輸送到低溫甲醇洗RTO裝置進(jìn)行處理，節省設備的投資。</span></span></p><p style="padding:0px;color:#484747;line-height:1.75em;text-indent:0em;font-family:微軟雅黑;font-size:14px;white-space:normal;box-sizing:border-box;background-color:#FFFFFF;margin-top:0px;margin-bottom:10px;"><span style="padding:0px;font-family:"宋體","simsun";box-sizing:border-box;">1.2.3 </span><span style="padding:0px;font-weight:700;box-sizing:border-box;"><span style="font-family:"宋體","simsun";">污水處理裝置廢氣</span></span><span style="font-size:15px;"><span style="font-family:"宋體","simsun";font-size:14px;">，一類(lèi)廢氣是在預處理單元的調節池、勻質(zhì)罐、隔油池、酸化水解池等裝置的散發(fā)氣體，氣量和濃度波動(dòng)范圍較大，</span><span style="font-family:"宋體","simsun";font-size:14px;">VOCs含量較高；另一類(lèi)是曝氣池、污泥脫水間的氣體，惡臭氣味明顯，主要以硫化物、揮發(fā)酚收率大于95%，大大降低熱法結晶規模。</span></span></p><p style="line-height:1.75em;text-indent:0em;"><span style="padding:0px;font-family:"宋體","simsun";font-weight:700;box-sizing:border-box;">2.冶煉企業(yè)VOCs氣體來(lái)源</span></p><p style="line-height:1.75em;text-indent:0em;"><span style="font-family:"宋體","simsun";font-size:14px;">鋼鐵工業(yè)燒結過(guò)程VOCs的生成機制分析。一般認為VOCs主要來(lái)源于燃煤。由于燒結過(guò)程使用燃料，因而不可避免地會(huì )產(chǎn)生VOCs。燒結過(guò)程中，VOCs是由焦炭、含油氧化鐵皮等原燃料中的揮發(fā)性物質(zhì)形成的，以氣體形式排放，在某些操作條件下同時(shí)形成二噁英和呋喃。燒結預熱帶溫度范圍基本為100℃～900℃，厚度大約為100mm～200mm，持續時(shí)間為10min左右。隨燒結進(jìn)行，燃料顆粒溫度升高，內部有機揮發(fā)物呈氣態(tài)揮發(fā)到氣流中，隨氣流向下運動(dòng)，下部溫度較低，含有機揮發(fā)物的氣流熱交換后溫度降低，其中的有機揮發(fā)物根據沸點(diǎn)高低逐步冷凝。由于冷凝速度較快，形成許多微小顆粒，這也是粉塵形成的原因之一。</span></p><p><br /></p> </div> </div> </div> </div> </div> <footer> <div id="x44bvwc1ic" class="foot1 hidden-xs hidden-sm"> <div id="x44bvwc1ic" class="container"> <div id="x44bvwc1ic" class="row"> <div id="x44bvwc1ic" class="item"> <div><a href="/about/?uuid=D1872E30-4AEB-41CC-A1B5-E615937018A6">關(guān)于明晟</a></div> <ul> <li><a href="/about/?uuid=3EE1E130-5E28-4343-8B36-AC687E7DC273" >企業(yè)簡(jiǎn)介</a></li> <li><a href="/about/?uuid=6116D542-10A2-4BDE-95B7-F247F9AA33BB" >組織架構</a></li> <li><a href="/content/?uuid=306101CA-2D69-4B36-B86A-FAF827605021" >核心文化</a></li> <li><a href="/content/?uuid=20D846B8-7EF0-41C4-9158-338983A8A026" >企業(yè)優(yōu)勢</a></li> </ul> </div> <div 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