摘要
利用外热式固定床反应器，在400～700℃下对不同比例的城市污泥与玉米秸秆混合物进行共热解，研究热解条件对炭粉的产率、比表面积、孔径分布的影响。结果表明，随热解温度的提高和玉米秸秆量的增加，炭粉的产率逐渐减小，700℃时，纯污泥热解的炭粉得率是51．5％（以干原料计），添加45％的秸秆时，炭粉得率是41．75％；炭粉的比表面积随热解温度的提高而增大，随玉米秸秆量的增加而增大，700℃时，比表面积在50-80m^2/g;纯污泥热解炭粉的孔径以中大孔为主，随玉米秸秆添加量的增大，炭粉的孔径分布由中大孔趋向中微孔。
Co-pyrolysis of sewage sludge and corn stalk was carried out by using an externally heated fixed-bed reactor at 400-700 ℃. The effects of co-pyrolysis conditoons on carbon yield, specific surface area and pore size distribution were investigated. The results indicate that the yield of carbon decreases with the increasing of final pyrolysis temperature, at 700 ℃, the carbon powder yield for pure sludge （dry base） is 51.5%, and is 41.75% wit addition of 45% of corn stalk; The specific surface area of carbon powder increases with pyrolysis temperature rise and corn stalk dosage rise, the range is 50-80 m^2/g. The pore of the carbon powder obtained from pure sludge is mainly in medium and large sizes, and with increase of corn stalk dosage, the pore tend to be in medium and micro sizes.
出处
《可再生能源》
CAS
北大核心
2011年第2期74-77,共4页
Renewable Energy Resources
基金
江苏省自然基金(BK2009097)
关键词
污泥
炭粉
共热解
产率
比表面积
sewage sludge
carbon
co-pyrolysis
yield
specific surface area
