基于移动床的印染污泥微波热解及固相产物的表征与分析
发布时间：2019-06-26 14:14
【摘要】：采用微波热解技术,通过改变微波功率、热解温度、气体和固体停留时间、添加催化剂,探究印染污泥热解的特性。采用元素分析、扫描电镜(SEM)、BET比表面积仪、X射线荧光光谱仪(XRF)、X射线衍射仪(XRD)和电感耦合等离子体质谱仪(ICP-MS)对印染污泥和泥炭进行了分析。实验结果表明,随着温度的升高,泥炭产率逐渐降低,750℃时降到63.87%(质量);气体产率随温度逐渐增加。添加Ca O和Fe,泥炭产率增加,不可凝气体中CO2含量减少,H_2、CO和CH_4含量增加,最大H_2含量达64.17%。随着热解温度的升高,泥炭中C、H、N元素含量逐渐降低,S含量有所升高。热解温度在550℃时,泥炭的比表面积达到最大值91.9 m~2·g~(-1)。经微波热解后,污泥中的重金属符合农业排放标准的要求。
[Abstract]:The pyrolysis characteristics of printing and dyeing sludge were studied by changing microwave power, pyrolysis temperature, gas and solid residence time and adding catalyst. Printing and dyeing sludge and peat were analyzed by elemental analysis, scanning electron microscope (SEM), BET specific surface product instrument, X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD) and inductively coupled plasma mass spectrometer (ICP-MS). The experimental results show that with the increase of temperature, the peat yield decreases gradually, which decreases to 63.87% (mass) at 750 鈩，
本文编号：2506244
[Abstract]:The pyrolysis characteristics of printing and dyeing sludge were studied by changing microwave power, pyrolysis temperature, gas and solid residence time and adding catalyst. Printing and dyeing sludge and peat were analyzed by elemental analysis, scanning electron microscope (SEM), BET specific surface product instrument, X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD) and inductively coupled plasma mass spectrometer (ICP-MS). The experimental results show that with the increase of temperature, the peat yield decreases gradually, which decreases to 63.87% (mass) at 750 鈩，
本文编号：2506244
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