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Characterisation of products from pyrolysis of waste sludges

机译：废物污泥热解产物的表征

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The pyrolysis of waste sludges was investigated using thermogravimetry/mass spectrometry (TG/MS) and a fixed-bed reactor. Two types of sludge were used, namely mixed sludge and oil sludge. In TGA/MS measurements, two degradation steps were observed. Degradation of organic structures, in sludge took place in the first step, while inorganic materials in sludge were mainly decomposed in a second step (above 500 deg C). In a fixed-bed reactor, the catalytic effect of inorganic matter in addition to organic matter was monitored the quality and yield of products from pyrolysis. Pyrolysis of oil sludge produced a larger amount of oil containing more aliphatic compounds and a high calorific value. On the other hand, pyrolysis of mixed sludge gave a smaller amount of oil being rich in polar compounds. The gaseous products from pyrolysis consist of high amount of combustable gases. Landfilling was found to be the best alternative to dispose off the pyrolytic char obtained from pyrolysis.
机译：使用热重/质谱（TG / MS）和固定床反应器研究了废渣的热解。使用了两种类型的污泥，即混合污泥和油污泥。在TGA / MS测量中，观察到两个降解步骤。第一步，污泥中的有机结构发生降解，而第二步（高于500摄氏度）则主要分解污泥中的无机物质。在固定床反应器中，除了有机物外，还监测了无机物对热解产物的质量和收率的催化作用。油泥的热解产生了大量的油，其中含有更多的脂肪族化合物，并且发热量高。另一方面，混合污泥的热解产生了少量的富含极性化合物的油。热解产生的气态产物由大量可燃气体组成。发现掩埋是处置从热解获得的热解炭的最佳选择。

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