低温与特气
低溫與特氣
저온여특기
LOW TEMPERATURE AND SPECIALTY GASES
2015年
2期
25-30
,共6页
活性炭%H3 PO4%二次活化%乙烷%吸附
活性炭%H3 PO4%二次活化%乙烷%吸附
활성탄%H3 PO4%이차활화%을완%흡부
secondary activation%phosphate%activated carbon%ethane%adsorption
采用H3 PO4浸渍法对椰壳活性炭进行二次活化，并探究了活化后样品对低浓度乙烷的吸附性能。通过正交实验和单因素实验分析考察了浸渍条件和活化条件对活性炭样品吸附乙烷性能的影响，针对乙烷吸附性能得出二次活化最佳应用条件。结果表明：样品对乙烷吸附量随活化温度升高而降低，随浸渍率、活化时间、浸渍时间增大呈先增大后降低趋势。当活化温度为300℃，浸渍率为0．8，活化时间为120 min，浸渍时间为180 min时，样品对乙烷的吸附性能最佳，穿透吸附量达246．42 ugg－1，较未处理椰壳活性炭提高了129％。
採用H3 PO4浸漬法對椰殼活性炭進行二次活化，併探究瞭活化後樣品對低濃度乙烷的吸附性能。通過正交實驗和單因素實驗分析攷察瞭浸漬條件和活化條件對活性炭樣品吸附乙烷性能的影響，針對乙烷吸附性能得齣二次活化最佳應用條件。結果錶明：樣品對乙烷吸附量隨活化溫度升高而降低，隨浸漬率、活化時間、浸漬時間增大呈先增大後降低趨勢。噹活化溫度為300℃，浸漬率為0．8，活化時間為120 min，浸漬時間為180 min時，樣品對乙烷的吸附性能最佳，穿透吸附量達246．42 ugg－1，較未處理椰殼活性炭提高瞭129％。
채용H3 PO4침지법대야각활성탄진행이차활화，병탐구료활화후양품대저농도을완적흡부성능。통과정교실험화단인소실험분석고찰료침지조건화활화조건대활성탄양품흡부을완성능적영향，침대을완흡부성능득출이차활화최가응용조건。결과표명：양품대을완흡부량수활화온도승고이강저，수침지솔、활화시간、침지시간증대정선증대후강저추세。당활화온도위300℃，침지솔위0．8，활화시간위120 min，침지시간위180 min시，양품대을완적흡부성능최가，천투흡부량체246．42 ugg－1，교미처리야각활성탄제고료129％。
The coconut shell activated carbon was carbonized secondarily by chemical activation with H3 PO4 impregnation. The adsorption properties of the samples after the activation to ethane were tested.The effects of impregnation conditions and carbonized conditions were investigated by orthogonal experiments and composite analysis of single factor experiment. The results showed the adsorption properties of ethane decreased with carbonization temperature increasing, reduced after the first increase with dipping ratio rising.The influence of carbonation time and impregnation time to the adsorption proper-ties retained the same trends compared with impregnation ratio.The most appropriate application conditions were as fol-lows:the carbonization temperature of 300℃, impregnation ratio of 0.8, carbonization time of 120min, impregnation time of 180min and the maximum adsorption breakthrough attained 246.42 ugg-1 , having improved 129 percent in terms of un-treated coconut shell activated carbon.
