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热解与燃烧是两种有前景的含油污泥处理技术。利用热重-Fourier变换红外光谱仪对含油污泥的热解与燃烧过程进行了研究。结果表明,两反应过程均经历了干燥脱气、轻质油分反应、重质油分反应、半焦反应以及矿物质反应共5个阶段。由于O2的存在,燃烧过程的失重率大于热解过程,且以轻质油分反应阶段的失重差异最为显著。热解与燃烧过程的主要气体产物分别为HCS与CO2,气体产物的析出特性在低于600℃时差异明显。含油污泥的热解与燃烧在反应过程上较为相似,反应产物上则有明显差异。
Pyrolysis and combustion are two promising oil-bearing sludge treatment technologies. The pyrolysis and combustion of oily sludge were studied by TG-Fourier transform infrared spectroscopy. The results showed that the two reaction processes all experienced five phases: dry degassing, light oil reaction, heavy oil reaction, semi-coke reaction and mineral reaction. Due to the presence of O2, the rate of weight loss in the combustion process is greater than that in the pyrolysis process, and the difference in weight loss during the light oil fraction reaction is most pronounced. The main gas products of pyrolysis and combustion are HCS and CO2, respectively. The precipitation characteristics of gas products are obviously different below 600 ℃. The pyrolysis and combustion of oily sludge are similar in the reaction process, but there are obvious differences on the reaction products.