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生物凈化洗滌塔基本特(te)征是(shi)在(zai)廢(fei)(fei)氣(qi)處理構筑物(wu)(wu)內(nei)設(she)置微(wei)生(sheng)(sheng)(sheng)物(wu)(wu)生(sheng)(sheng)(sheng)長(chang)聚集的(de)載體,在(zai)充氧(yang)的(de)條件下,微(wei)生(sheng)(sheng)(sheng)物(wu)(wu)在(zai)填料表(biao)面積聚附著形成(cheng)生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)。當廢(fei)(fei)氣(qi)經(jing)過時,生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)中(zhong)的(de)微(wei)生(sheng)(sheng)(sheng)物(wu)(wu)吸收分(fen)解廢(fei)(fei)氣(qi)中(zhong)的(de)有(you)機(ji)物(wu)(wu),使廢(fei)(fei)氣(qi)得到(dao)(dao)凈化,同時微(wei)生(sheng)(sheng)(sheng)物(wu)(wu)也得到(dao)(dao)增(zeng)殖,生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)隨(sui)之(zhi)增(zeng)厚。當生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)增(zeng)長(chang)到(dao)(dao)一定厚度,向生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)內(nei)部擴散的(de)氧(yang)受(shou)到(dao)(dao)限制,其表(biao)面仍是(shi)好(hao)氧(yang)狀態,而內(nei)層則會(hui)呈缺氧(yang)甚至(zhi)厭氧(yang)狀態,并導致生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo)的(de)脫落。隨(sui)后,填料表(biao)面還會(hui)繼(ji)續生(sheng)(sheng)(sheng)長(chang)新的(de)生(sheng)(sheng)(sheng)物(wu)(wu)膜(mo),周(zhou)而復始,使廢(fei)(fei)氣(qi)得到(dao)(dao)凈化。
生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta)與精餾塔(ta)(ta)(ta)類似,由(you)塔(ta)(ta)(ta)體(ti),塔(ta)(ta)(ta)板(ban),再沸(fei)(fei)器,冷凝器組(zu)成。由(you)于(yu)生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta)是進行(xing)粗分(fen)離的(de)(de)設備,所以(yi)塔(ta)(ta)(ta)板(ban)數量一(yi)般較少,通常不(bu)會超過十級。 生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta)適(shi)用(yong)于(yu)含有(you)少量粉塵的(de)(de)混合氣(qi)體(ti)分(fen)離,各組(zu)分(fen)不(bu)會發生(sheng)(sheng)(sheng)反應,且產(chan)(chan)(chan)物(wu)(wu)應容易(yi)液化(hua)(hua),粉塵等雜質(也可以(yi)稱之為高(gao)沸(fei)(fei)物(wu)(wu))不(bu)易(yi)液化(hua)(hua)或(huo)(huo)凝固(gu)。當(dang)混合氣(qi)從(cong)生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta)中部(bu)(bu)通入生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta),由(you)于(yu)塔(ta)(ta)(ta)板(ban)間存(cun)在產(chan)(chan)(chan)物(wu)(wu)組(zu)分(fen)液體(ti),產(chan)(chan)(chan)物(wu)(wu)組(zu)分(fen)氣(qi)體(ti)液化(hua)(hua)的(de)(de)同時(shi)蒸(zheng)發部(bu)(bu)分(fen),而(er)雜質由(you)于(yu)不(bu)能被(bei)液化(hua)(hua)或(huo)(huo)凝固(gu),當(dang)通過有(you)液體(ti)存(cun)在的(de)(de)塔(ta)(ta)(ta)板(ban)時(shi)將(jiang)會被(bei)產(chan)(chan)(chan)物(wu)(wu)組(zu)分(fen)液體(ti)固(gu)定下來,產(chan)(chan)(chan)生(sheng)(sheng)(sheng)洗(xi)滌(di)(di)作用(yong),生(sheng)(sheng)(sheng)物(wu)(wu)洗(xi)滌(di)(di)塔(ta)(ta)(ta)就是根據這一(yi)原(yuan)理設計和制造的(de)(de)。
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