添加碳酸钙对油页岩热解和燃烧反应特性的影响

Influence of Addition of CaCO_3 on Pyrolysis and Combustion of Oil Shale

先将油页岩和Ca CO3以不同的比例进行掺混(油页岩:Ca CO3质量比从9:1到2:8之间),然后利用热重分析技术(TG)研究了Ca CO3的加入对油页岩热解和燃烧反应特征的影响规律。结果表明:在油页岩有机质热解和燃烧过程中其反应的转化率基本都随着Ca CO3添加比例的增加而增大;而其活化能基本都随着Ca CO3添加比例的增加而降低,在Ca CO3添加比例为2:8时,对于热解过程,活化能由纯油页岩反应时的120.69 k J/mol降至90.22 k J/mol,对于燃烧过程,活化能由纯油页岩下的58.69k J/mol降至54.83 k J/mol。

Oil shale（OS） and Ca CO3 were respectively mixed in the mass ratios of OS to Ca CO3 from 9：1 to 2：8, and then influence of Ca CO3 addition on the pyrolysis and combustion of OS was studied by thermogravimetric（TG） technique. The results indicate that, for kerogen pyrolysis and combustion of OS, the conversion increases with increasing of Ca CO3 proportion; while the activation energy decreases with the increase of Ca CO3 proportion. When the mass ratio of OS to Ca CO3 is 2：8, the activation energy of OS pyrolysis drops from 120.69 k J/mol to 90.22 k J/mol, while the activation energy of OS combustion drops from 58.69 k J/mol to 54.83 k J/mol.