河南化工
河南化工
하남화공
HENAN CHEMICAL INDUSTRY
2011年
13期
48-50
,共3页
污泥%麦秸%吸附剂%比表面积%孔径
汙泥%麥秸%吸附劑%比錶麵積%孔徑
오니%맥갈%흡부제%비표면적%공경
sewage sludge%wheat straw%adsorbent%surface area%aperture
利用外热式固定床反应器,在400～700℃范围内对脱水污泥和麦秸的混合物进行共热解,研究了热解条件对炭粉吸附特性的影响。实验结果表明：在相同的秸秆掺混比下,400℃制得的含炭吸附剂的碘吸附值最高,在406.6～542.1 mg/g之间;孔径分布较宽,以中孔为主,微孔和比表面积较小。总孔容积随热解温度的升高而增大,700℃热解的纯污泥总孔容积最大,达到0.223 6 mL/g,中孔占71.9%。污泥与秸秆以5∶5的混合比例热解后所得固体吸附剂总孔容有所下降,但孔径分布集中,中孔含量达到81.1%,大孔含量高达18.9%。
利用外熱式固定床反應器,在400～700℃範圍內對脫水汙泥和麥秸的混閤物進行共熱解,研究瞭熱解條件對炭粉吸附特性的影響。實驗結果錶明：在相同的秸稈摻混比下,400℃製得的含炭吸附劑的碘吸附值最高,在406.6～542.1 mg/g之間;孔徑分佈較寬,以中孔為主,微孔和比錶麵積較小。總孔容積隨熱解溫度的升高而增大,700℃熱解的純汙泥總孔容積最大,達到0.223 6 mL/g,中孔佔71.9%。汙泥與秸稈以5∶5的混閤比例熱解後所得固體吸附劑總孔容有所下降,但孔徑分佈集中,中孔含量達到81.1%,大孔含量高達18.9%。
이용외열식고정상반응기,재400～700℃범위내대탈수오니화맥갈적혼합물진행공열해,연구료열해조건대탄분흡부특성적영향。실험결과표명：재상동적갈간참혼비하,400℃제득적함탄흡부제적전흡부치최고,재406.6～542.1 mg/g지간;공경분포교관,이중공위주,미공화비표면적교소。총공용적수열해온도적승고이증대,700℃열해적순오니총공용적최대,체도0.223 6 mL/g,중공점71.9%。오니여갈간이5∶5적혼합비례열해후소득고체흡부제총공용유소하강,단공경분포집중,중공함량체도81.1%,대공함량고체18.9%。
Co-pyrolysis of sludge and wheat straw is carried out by using an externally heated fixed-bed reactor at 400~700 ℃.The effect of co-pyrolysis conditions on the carbon adsorption are investigated.The result indicates that adsorbent are produced with straw in the same mixing ratio at 400 ℃,which can adsorb the largest number of iodine,406.6~542.1 mg/g.And the adsorbent have wide aperture,but the tiny holes account for the small proportion,primarily are middle holes account for 71.9%,which have smaller surface area.The total pore volume increases with pyrolysis temperature together,so pyrolysis of sewage sludge has largest total pore volume at 700 ℃,which is 0.223 6 mL/g.Adsorbent is obtained by pyrolysis of sludge with straw mixed in the ratio of 5∶5,which has smaller total pore volume and more concentrated distribution,and middle holes account for 81.1%.
