
粉(fen)(fen)狀(zhuang)(zhuang)(zhuang)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)具體內(nei)容是定量(liang)得(de)(de)(de)(de)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)在標準碘液中吸(xi)附(fu)碘得(de)(de)(de)(de)多(duo)(duo)少,一般用來(lai)表示活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)對小分子(zi)雜質的(de)(de)(de)(de)吸(xi)附(fu)能(neng)力,實(shi)際對活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)得(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)沒有什么(me)意義,也就(jiu)是說,碘值高(gao)得(de)(de)(de)(de)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)不見得(de)(de)(de)(de)就(jiu)是好,粉(fen)(fen)狀(zhuang)(zhuang)(zhuang)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)碘值表征(zheng)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)略大于(yu)1.0nm微孔得(de)(de)(de)(de)發達(da)程度。由于(yu)碘分子(zi)大小為0.6nm左右。碘值就(jiu)表征(zheng)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)大于(yu)0.6nm的(de)(de)(de)(de)有機物(wu)的(de)(de)(de)(de)吸(xi)附(fu)量(liang),同時也表征(zheng)了大于(yu)該1nm活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)孔隙的(de)(de)(de)(de)多(duo)(duo)少。粉(fen)(fen)狀(zhuang)(zhuang)(zhuang)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)碘值的(de)(de)(de)(de)檢(jian)測方法粉(fen)(fen)狀(zhuang)(zhuang)(zhuang)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)作為一種優(you)良的(de)(de)(de)(de)物(wu)理、化(hua)學(xue)吸(xi)附(fu)劑,越來(lai)越受到(dao)人(ren)們的(de)(de)(de)(de)重視。隨著活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)用途的(de)(de)(de)(de)增(zeng)加,粉(fen)(fen)狀(zhuang)(zhuang)(zhuang)活(huo)(huo)(huo)性(xing)(xing)(xing)炭(tan)(tan)(tan)(tan)的(de)(de)(de)(de)檢(jian)測方法也越來(lai)越多(duo)(duo)。但(dan)不同的(de)(de)(de)(de)檢(jian)測方法有可能(neng)會發生不同的(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)指(zhi)標。
碘值一直是評估活(huo)性(xing)(xing)炭吸附能力的標準(zhun)。碘值越高直徑在2.0-8.0mm之(zhi)間(jian),大小(xiao)誤差(cha)在5%之(zhi)間(jian),顆粒越細(xi)越小(xiao)果殼活(huo)性(xing)(xing)炭質量越好。六個(ge)指標教你(ni)區分果殼活(huo)性(xing)(xing)炭的好壞催化載體活(huo)性(xing)(xing)炭。
杏殼活性(xing)炭比表面積:
比表(biao)面(mian)(mian)(mian)積是(shi)將(jiang)一克果(guo)殼活性(xing)(xing)炭(tan)內部空間產開呈現一個面(mian)(mian)(mian),這個平(ping)面(mian)(mian)(mian)的(de)面(mian)(mian)(mian)積就(jiu)是(shi)果(guo)殼活性(xing)(xing)炭(tan)的(de)比表(biao)面(mian)(mian)(mian)積,比表(biao)面(mian)(mian)(mian)積大的(de)果(guo)殼活性(xing)(xing)炭(tan)質(zhi)量就(jiu)越好。
機械(xie)強(qiang)(qiang)度:機械(xie)強(qiang)(qiang)度決定了(le)果殼活性炭的使用壽命,機械(xie)強(qiang)(qiang)度越高(gao),果殼活性炭強(qiang)(qiang)度就越高(gao),質量就越好(hao)。
灰分(fen)(fen):灰分(fen)(fen)主要是過客活性炭燒制(zhi)后殘(can)留(liu)物,灰分(fen)(fen)越(yue)低說明(ming)果(guo)殼活性炭的燒制(zhi)過程(cheng)越(yue)規范,殘(can)留(liu)物也就越(yue)少(shao)。
決(jue)定果殼(ke)活性炭質量的(de)因素(su)又很多,只有通(tong)過各方面(mian)的(de)綜(zong)合對比,才能確保果殼(ke)活性炭的(de)質量。
粉狀活(huo)性炭(tan)的(de)(de)微(wei)(wei)孔(kong)(kong)可(ke)以吸(xi)附低分(fen)(fen)子(zi)(zi)(zi)量的(de)(de)氣(qi)體和溶(rong)液(ye)中(zhong)的(de)(de)小(xiao)分(fen)(fen)子(zi)(zi)(zi),但分(fen)(fen)子(zi)(zi)(zi)量較(jiao)高的(de)(de)分(fen)(fen)子(zi)(zi)(zi)不能進入(ru)微(wei)(wei)孔(kong)(kong)內,中(zhong)孔(kong)(kong)提(ti)供進入(ru)微(wei)(wei)孔(kong)(kong)的(de)(de)通(tong)道,本(ben)身又能吸(xi)附分(fen)(fen)子(zi)(zi)(zi)量較(jiao)高的(de)(de)物質,大(da)孔(kong)(kong)則(ze)兼(jian)有提(ti)供通(tong)道和吸(xi)附的(de)(de)作用。如(ru)果用活(huo)性炭(tan)吸(xi)附小(xiao)分(fen)(fen)子(zi)(zi)(zi)物質,例如(ru)某(mou)些氣(qi)體(毒(du)氣(qi))和低分(fen)(fen)子(zi)(zi)(zi)量的(de)(de)有機物,可(ke)以使用微(wei)(wei)孔(kong)(kong)較(jiao)多(duo)的(de)(de)產品;但如(ru)果要吸(xi)附較(jiao)大(da)的(de)(de)分(fen)(fen)子(zi)(zi)(zi),則(ze)要選用有較(jiao)多(duo)中(zhong)孔(kong)(kong)的(de)(de)產品。
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