Oxidation Kinetics of Oil Shale Semicokes: Reactivity as a Function of Pyrolysis Temperature and Shale Origin
Oxidation Kinetics of Oil Shale Semicokes: Reactivity as a Function of Pyrolysis Temperature and Shale Origin
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DOI：
10.1021/ef3015052
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发表时间：
2013-01
期刊：
影响因子：
5.3
通讯作者：
Jillian L. Goldfarb;A. D’Amico;C. Culin;E. Suuberg;I. Külaots
中科院分区：
文献类型：
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作者：
Jillian L. Goldfarb;A. D’Amico;C. Culin;E. Suuberg;I. Külaots
作为原油价格不稳定而受到关注的替代化石燃料，油页岩在看似迫在眉睫的商业化之前面临着一些障碍。其广泛使用的最大环境障碍之一是石油开采过程中的主要副产品：半焦。由于大多数半焦在露天垃圾填埋场处置，这种废物流对环境构成威胁，其处置很可能代表了潜在可用副产品的浪费。先前的研究表明，来自爱沙尼亚、中国和美国的油页岩在 500 和 1000 °C 下以 20 °C min–1 的速率热解，产生有机炭含量相对较高和表面积较大的半焦。为了确定页岩来源和热解温度如何影响油页岩半焦燃烧的活化能，我们研究了在这两个温度下热解的油页岩半焦的氧化动力学。半焦在空气中的活化能范围为 108–130 kJ mol–1...
As an alternative fossil fuel garnering attention in the wake of unstable crude oil prices, oil shale faces several obstacles before its seemingly imminent commercialization. One of the largest environmental stumbling blocks to its widespread use is the primary byproduct of oil extraction processes: semicoke. With the majority of semicoke disposed of in open landfills, this waste stream poses a threat to the environment, and its disposal may well represent a waste of a potentially useable byproduct. Previous studies show that oil shale from Estonia, China, and the United States, pyrolyzed at 500 and 1000 °C at a rate of 20 °C min–1, yield semicokes with relatively high organic char contents and high surface areas. To determine how shale origin and pyrolysis temperature impact the activation energy of oil shale semicoke combustion, we investigate the oxidation kinetics of oil shale semicokes pyrolyzed at these two temperatures. Activation energies in air are in the range of 108–130 kJ mol–1 for the semicok...