CAJ | 학술논문

以桦甸油页岩为试样,研究了油页岩在热解过程中重金属元素的挥发规律,并对油页岩中重金属元素的挥发动力学机理进行了分析.结果表明：随着热解温度的升高,重金属挥发率变化情况基本相似,其热解过程迁移曲线均呈现S形状,Weibull函数能够很好地描述重金属元素在油页岩热解过程中的挥发行为;在油页岩热解过程中,重金属元素挥发动力学活化能E处于30~130kJ/mol;各重金属元素迁移的频率因子相对较低,均不高于1×107min-1.活化能E和频率因子A之间呈线性关系;初始热解温度低的元素其挥发活化能也较低.
이화전유혈암위시양,연구료유혈암재열해과정중중금속원소적휘발규률,병대유혈암중중금속원소적휘발동역학궤리진행료분석.결과표명：수착열해온도적승고,중금속휘발솔변화정황기본상사,기열해과정천이곡선균정현S형상,Weibull함수능구흔호지묘술중금속원소재유혈암열해과정중적휘발행위;재유혈암열해과정중,중금속원소휘발동역학활화능E처우30~130kJ/mol;각중금속원소천이적빈솔인자상대교저,균불고우1×107min-1.활화능E화빈솔인자A지간정선성관계;초시열해온도저적원소기휘발활화능야교저.
Taking the Huadian oil shale as an object of study,volatilization behavior of heavy metals during oil shale pyrolysis was studied,while the kinetic mechanism analyzed.Results show that with the increase of pyrolysis temperature,the volatilization rate of heavy metals is basically the same with each other.The migration curve of heavy metals shows an S shape during oil shale pyrolysis,for which Weibull function can be used to describe the migration behavior.Moreover,the migration activation energy of heavy metals lies in 30-130 kJ/mol,with a relatively low frequency factor,generally less than 1×107/min.There exists a liner relationship between the E and lnA.Besides,elements with lower initial pyrolysis temperature usually represent lower migration activation energy as well.