张立国, 刘蕾, 张秋云, 成文. 市政污水污泥催化热解特性研究[J]. 华南师范大学学报(自然科学版), 2011, (4).
引用本文: 张立国, 刘蕾, 张秋云, 成文. 市政污水污泥催化热解特性研究[J]. 华南师范大学学报(自然科学版), 2011, (4).
ZHANG Li-Guo- Liu-Lei- Zhang-Qiu-Yun- Cheng-Wen- Chen-Cui-Ying- Wu-Hong-Hai, . CATALYTIC PYROLYSIS CHARACTERISTICS OF MUNICIPAL SEWAGE SLUDGE[J]. Journal of South China Normal University (Natural Science Edition), 2011, (4).
Citation: ZHANG Li-Guo- Liu-Lei- Zhang-Qiu-Yun- Cheng-Wen- Chen-Cui-Ying- Wu-Hong-Hai, . CATALYTIC PYROLYSIS CHARACTERISTICS OF MUNICIPAL SEWAGE SLUDGE[J]. Journal of South China Normal University (Natural Science Edition), 2011, (4).

市政污水污泥催化热解特性研究

CATALYTIC PYROLYSIS CHARACTERISTICS OF MUNICIPAL SEWAGE SLUDGE

  • 摘要: 为了考察城市污水污泥的催化热解特性,以CaO、ZnCl2、K2CO3三种物质作为催化剂,采用热重法(TG)和差热分析法(DSC),对比研究了干化污泥的催化热解过程及其动力学。结果表明,无论对于污泥原样还是添加催化剂的污泥,其热解过程都分为水分析出、挥发分析出和固定碳燃尽三个阶段。与原始污泥样品相比,添加催化剂的污泥在固定碳燃尽阶段热解速率有较大提高。添加催化剂后污泥样品的活化能E、频率因子A都有所下降,在三种催化剂之中CaO的催化效果最好。

     

    Abstract: To investigate the catalytic pyrolysis characteristics of dewatered municipal sewage sludge, the pyrolysis experiments were conducted using CaO, ZnCl2, K2CO3 as catalysts by the methods of thermogravimetry (TG) and Differential scanning calorimeter (DSC). The results showed that the pyrolysis process of dried sewage sludge was divided into three phases: moisture loss, volatile matter loss and fixed carbon loss for all sludge samples. The pyrolysis rate was greatly enhanced during the fixed carbon loss and the activation energy and pre-exponential factor decreased for the sludge sample with addition of catalyst. The catalytic activity of CaO were best among three catalysts.

     

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