Zhou Xiehong, Jia Hanzhong, Qu Chengtun, Fan Daidi, Wang Chuanyi
a Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments , Chinese Academy of Sciences , Urumqi , People's Republic of China.
b School of Chemical Engineering , Northwest University , Xi'an , People's Republic of China.
Environ Technol. 2017 Feb;38(3):361-369. doi: 10.1080/09593330.2016.1194481. Epub 2016 Jun 13.
Pyrolysis is potentially an effective treatment of oily sludge for oil recovery, and its kinetics and efficiency are expected to be affected by additives. In the present study, the pyrolysis parameters, including heating rate, final pyrolysis temperature, and pyrolysis time of oily sludge in the presence of agricultural biomass, apricot shell, were systematically explored. As a result, maximum oil recovery is achieved when optimizing the pyrolysis conditionas15 K/min, 723 K, and 3 h for heating rate, final pyrolysis temperature, and pyrolysis time, respectively. Thermogravimetric experiments of oily sludge samples in the presence of various biomasses conducted with non-isothermal temperature programmes suggest that the pyrolysis process contains three stages, and the main decomposition reaction occurs in the range of 400-740 K. Taking Flynn-Wall-Ozawa analysis of the derivative thermogravimetry and thermogravimetry results, the activation energy (E) values for the pyrolysis of oily sludge in the presence and absence of apricot shell were derived to be 35.21 and 39.40 kJ mol, respectively. The present work supports that the presence of biomass promotes the pyrolysis of oily sludge, implying its great potential as addictive in the industrial pyrolysis of oily sludge.
热解可能是一种用于回收石油的有效处理含油污泥的方法，其动力学和效率预计会受到添加剂的影响。在本研究中，系统地探索了在农业生物质杏壳存在下含油污泥的热解参数，包括加热速率、最终热解温度和热解时间。结果表明，分别将加热速率、最终热解温度和热解时间优化为15 K/min、723 K和3 h时，可实现最大的石油回收率。采用非等温热程序对存在各种生物质的含油污泥样品进行热重实验表明，热解过程包括三个阶段，主要分解反应发生在400 - 740 K范围内。通过对微商热重和热重结果进行弗林-沃尔-小泽分析，得出在有和没有杏壳存在的情况下，含油污泥热解的活化能（E）值分别为35.21和39.40 kJ mol。目前的工作支持生物质的存在促进了含油污泥的热解，这意味着其在含油污泥工业热解中作为添加剂具有巨大潜力。
