【摘要】 为了研究污泥热解特性,利用铝甑反应器对城市污泥进行了热解实验。实验结果表明:随着温度逐渐升高,热解程度逐渐加深,高温时热解液体的收率略有降低;热解过程可分为3个阶段,即水分析出阶段、挥发分析出阶段和残留有机物继续分解碳化阶段。在热解实验基础上进行能量平衡分析,结果发现,采用热解油气循环供热,既可以完全满足污泥热解过程的能量需求,还可为干燥过程节约51.43%的能量。更多还原

【Abstract】 In order to study the pyrolysis characteristics of municipal sludge, the experiments were conducted in an aluminium retort reactor. The results showed that pyrolysis degree was gradually increased with the increase of temperature. There was a maximum yield of bio-oil appeared at 700 ℃.The TG profiles of sludge can be divided into three obvious stages of dissociative water and external water bounded by surface tension, main thermal decomposition reactions and residues decomposition.The experimental results combined with calculation demonstrated that pyrolysis can be used to dispose without external heat supply and the energy of drying can be decreased by 51.43% through the use of combustion of bio-gas.更多还原