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> VOC廢氣處理

活性炭吸附、脫附、催化燃燒

▌設備概述:

有(you)機廢氣吸(xi)附催(cui)化(hua)一體化(hua)裝置(zhi)適用(yong)(yong)于低濃(nong)度不(bu)宜采用(yong)(yong)直接(jie)燃燒或催(cui)化(hua)燃燒法及吸(xi)附回收法處(chu)理(li)的有(you)機廢氣,尤其對大風量的處(chu)理(li)場合,可獲得滿意的處(chu)理(li)效果。


▌工作原理:

本凈化(hua)(hua)裝(zhuang)(zhuang)置成套系統是根據(ju)吸附(效率(lv)高)和催化(hua)(hua)燃燒(shao)(節(jie)能)兩(liang)個基本原理(li)設計的,即吸附濃縮—催化(hua)(hua)燃燒(shao)法。本凈化(hua)(hua)裝(zhuang)(zhuang)置處理(li)流程包括三部分:干式除(chu)塵、吸附氣(qi)(qi)體流程、脫附氣(qi)(qi)體流程;


▌干式過濾器:

待(dai)處理的(de)有(you)機廢氣由風(feng)管引出后進入干式過濾(lv)器(qi),可(ke)過濾(lv)廢氣中的(de)顆(ke)粒物(wu)及粘性(xing)成分,延長活性(xing)炭的(de)吸附周期及使用壽命;


▌吸附氣體流程:

利用(yong)活性(xing)炭的(de)(de)物理特性(xing)對(dui)VOC有(you)機(ji)廢氣進(jin)行吸(xi)附,且蜂窩狀活性(xing)炭比(bi)表面積大、吸(xi)附能力強特性(xing),將(jiang)有(you)機(ji)廢氣吸(xi)附到活性(xing)炭的(de)(de)微孔(kong)中(zhong),從而使氣體得以凈化,凈化后的(de)(de)氣體再(zai)通過(guo)風機(ji)排(pai)空(kong),達到有(you)機(ji)廢氣治(zhi)理的(de)(de)效果;


▌脫附氣體流程:

當(dang)活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)微孔(kong)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)飽和(he)時(shi)(shi),將(jiang)不能(neng)(neng)(neng)再(zai)(zai)進(jin)(jin)行吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu),此時(shi)(shi)利用(yong)(yong)(yong)催(cui)化(hua)(hua)床(chuang)(chuang)產生的(de)(de)(de)(de)(de)高溫熱風對活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)進(jin)(jin)行脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu),活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)微孔(kong)中的(de)(de)(de)(de)(de)有機物遇(yu)高溫后自動脫(tuo)(tuo)離活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan),使活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)再(zai)(zai)生。脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu)下來的(de)(de)(de)(de)(de)有機物已被濃(nong)(nong)縮(濃(nong)(nong)度較原來提高幾十倍)并被送入催(cui)化(hua)(hua)燃(ran)燒(shao)(shao)(shao)室進(jin)(jin)行催(cui)化(hua)(hua)燃(ran)燒(shao)(shao)(shao),在催(cui)化(hua)(hua)劑上(shang)于250~300℃進(jin)(jin)行催(cui)化(hua)(hua)氧化(hua)(hua),使其(qi)轉(zhuan)化(hua)(hua)為(wei)無害的(de)(de)(de)(de)(de)CO2和(he)H2O排(pai)出, 當(dang)有機廢氣(qi)(qi)(qi)(qi)濃(nong)(nong)度達(da)(da)到(dao)2000PPm以(yi)上(shang)時(shi)(shi),有機廢氣(qi)(qi)(qi)(qi)在催(cui)化(hua)(hua)床(chuang)(chuang)可(ke)維持自燃(ran), 不用(yong)(yong)(yong)另(ling)外(wai)再(zai)(zai)行加熱,燃(ran)燒(shao)(shao)(shao)后的(de)(de)(de)(de)(de)尾(wei)氣(qi)(qi)(qi)(qi)一(yi)部(bu)(bu)份直接排(pai)到(dao)大(da)氣(qi)(qi)(qi)(qi),大(da)部(bu)(bu)份熱氣(qi)(qi)(qi)(qi)流(liu)被再(zai)(zai)次(ci)循環送往(wang)(wang)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang),用(yong)(yong)(yong)于對活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)的(de)(de)(de)(de)(de)脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu)再(zai)(zai)生。這樣既(ji)能(neng)(neng)(neng)滿足燃(ran)燒(shao)(shao)(shao)和(he)脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu)所需(xu)熱能(neng)(neng)(neng),又能(neng)(neng)(neng)達(da)(da)到(dao)節能(neng)(neng)(neng)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de),再(zai)(zai)生后的(de)(de)(de)(de)(de)活(huo)性(xing)(xing)(xing)(xing)流(liu)被再(zai)(zai)次(ci)循環送往(wang)(wang)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang),用(yong)(yong)(yong)于對活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)的(de)(de)(de)(de)(de)脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu)再(zai)(zai)生。這樣既(ji)能(neng)(neng)(neng)滿足燃(ran)燒(shao)(shao)(shao)和(he)脫(tuo)(tuo)附(fu)(fu)(fu)(fu)(fu)所需(xu)熱能(neng)(neng)(neng),又能(neng)(neng)(neng)達(da)(da)到(dao)節能(neng)(neng)(neng)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de),再(zai)(zai)生后的(de)(de)(de)(de)(de)活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)可(ke)用(yong)(yong)(yong)于下次(ci)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)。該設(she)備(bei)可(ke)采用(yong)(yong)(yong)雙氣(qi)(qi)(qi)(qi)路連續(xu)工作(zuo)(zuo),工作(zuo)(zuo)量(liang)(liang)較大(da)時(shi)(shi)設(she)兩(liang)個或多個吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang)交(jiao)替(ti)(ti)切換使用(yong)(yong)(yong)或序列交(jiao)替(ti)(ti)使用(yong)(yong)(yong),一(yi)個催(cui)化(hua)(hua)燃(ran)燒(shao)(shao)(shao)室,先將(jiang)有機廢氣(qi)(qi)(qi)(qi)經其(qi)中一(yi)個活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang)對氣(qi)(qi)(qi)(qi)流(liu)中的(de)(de)(de)(de)(de)廢氣(qi)(qi)(qi)(qi)進(jin)(jin)行吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu),當(dang)活(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)快達(da)(da)到(dao)飽和(he)時(shi)(shi)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang)兩(liang)端的(de)(de)(de)(de)(de)密閉閥門同時(shi)(shi)關閉,即停止吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)工作(zuo)(zuo),同時(shi)(shi)另(ling)一(yi)臺吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang)自動打(da)開(kai)開(kai)始接替(ti)(ti)吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)工作(zuo)(zuo)。如此以(yi)來兩(liang)臺或多臺吸(xi)(xi)(xi)(xi)(xi)附(fu)(fu)(fu)(fu)(fu)床(chuang)(chuang)切換運(yun)行可(ke)實現大(da)工作(zuo)(zuo)量(liang)(liang)的(de)(de)(de)(de)(de)連續(xu)工作(zuo)(zuo)。


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