
粉狀活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)具體內容是(shi)定量得(de)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)在標(biao)準碘(dian)(dian)液(ye)中吸附碘(dian)(dian)得(de)多少,一般用(yong)來表示活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)對小(xiao)分子雜質的(de)吸附能力,實(shi)際對活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)得(de)性(xing)(xing)(xing)(xing)能沒(mei)有(you)什么(me)意義,也就(jiu)是(shi)說,碘(dian)(dian)值高得(de)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)不(bu)見(jian)得(de)就(jiu)是(shi)好,粉狀活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)碘(dian)(dian)值表征(zheng)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)略大(da)(da)于1.0nm微孔得(de)發(fa)達程度。由于碘(dian)(dian)分子大(da)(da)小(xiao)為0.6nm左右。碘(dian)(dian)值就(jiu)表征(zheng)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)大(da)(da)于0.6nm的(de)有(you)機物的(de)吸附量,同時也表征(zheng)了大(da)(da)于該1nm活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)孔隙的(de)多少。粉狀活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)碘(dian)(dian)值的(de)檢(jian)測(ce)方法(fa)粉狀活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)作為一種優良(liang)的(de)物理、化學吸附劑,越來越受到人們的(de)重視。隨(sui)著(zhu)活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)用(yong)途的(de)增加,粉狀活(huo)(huo)(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)的(de)檢(jian)測(ce)方法(fa)也越來越多。但(dan)不(bu)同的(de)檢(jian)測(ce)方法(fa)有(you)可能會發(fa)生不(bu)同的(de)性(xing)(xing)(xing)(xing)能指標(biao)。
碘值(zhi)一(yi)直是評估活性(xing)(xing)炭吸附能(neng)力的標準(zhun)。碘值(zhi)越高直徑在2.0-8.0mm之間,大小誤差(cha)在5%之間,顆(ke)粒越細越小果殼活性(xing)(xing)炭質量越好。六個指(zhi)標教你區分果殼活性(xing)(xing)炭的好壞催化載體活性(xing)(xing)炭。
杏殼活性炭(tan)比(bi)表面積:
比(bi)表(biao)面積是將(jiang)一克果(guo)殼(ke)活(huo)性(xing)炭內部空間產開呈現一個(ge)面,這個(ge)平面的面積就(jiu)是果(guo)殼(ke)活(huo)性(xing)炭的比(bi)表(biao)面積,比(bi)表(biao)面積大的果(guo)殼(ke)活(huo)性(xing)炭質(zhi)量就(jiu)越好。
機械強(qiang)(qiang)度(du):機械強(qiang)(qiang)度(du)決定(ding)了(le)果殼活性(xing)炭(tan)的(de)使(shi)用壽命,機械強(qiang)(qiang)度(du)越(yue)高,果殼活性(xing)炭(tan)強(qiang)(qiang)度(du)就越(yue)高,質量就越(yue)好(hao)。
灰分(fen):灰分(fen)主要是過(guo)客活性炭燒制后(hou)殘留(liu)物(wu)(wu),灰分(fen)越(yue)(yue)(yue)低說明果(guo)殼活性炭的(de)燒制過(guo)程(cheng)越(yue)(yue)(yue)規范,殘留(liu)物(wu)(wu)也就越(yue)(yue)(yue)少。
決定(ding)果殼活性炭質量的因素又很多,只有通過(guo)各方面的綜合對比,才能(neng)確(que)保果殼活性炭的質量。
粉狀活性炭的微孔(kong)(kong)(kong)可以(yi)吸(xi)(xi)附(fu)(fu)低(di)分(fen)(fen)(fen)子(zi)(zi)量(liang)(liang)的氣體和(he)溶液中(zhong)的小分(fen)(fen)(fen)子(zi)(zi),但分(fen)(fen)(fen)子(zi)(zi)量(liang)(liang)較(jiao)(jiao)高(gao)的分(fen)(fen)(fen)子(zi)(zi)不能進入微孔(kong)(kong)(kong)內,中(zhong)孔(kong)(kong)(kong)提供進入微孔(kong)(kong)(kong)的通(tong)道(dao),本身又能吸(xi)(xi)附(fu)(fu)分(fen)(fen)(fen)子(zi)(zi)量(liang)(liang)較(jiao)(jiao)高(gao)的物(wu)質,大(da)孔(kong)(kong)(kong)則(ze)兼有(you)(you)提供通(tong)道(dao)和(he)吸(xi)(xi)附(fu)(fu)的作用(yong)。如果用(yong)活性炭吸(xi)(xi)附(fu)(fu)小分(fen)(fen)(fen)子(zi)(zi)物(wu)質,例如某些氣體(毒氣)和(he)低(di)分(fen)(fen)(fen)子(zi)(zi)量(liang)(liang)的有(you)(you)機物(wu),可以(yi)使(shi)用(yong)微孔(kong)(kong)(kong)較(jiao)(jiao)多的產品;但如果要吸(xi)(xi)附(fu)(fu)較(jiao)(jiao)大(da)的分(fen)(fen)(fen)子(zi)(zi),則(ze)要選用(yong)有(you)(you)較(jiao)(jiao)多中(zhong)孔(kong)(kong)(kong)的產品。
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