化工学报2025，Vol.76Issue(11)：5594-5603,10.DOI:10.11949/0438-1157.20250403
超临界水转化页岩生烃气反应动力学研究
Reaction kinetics on supercritical water conversion of shale for hydrocarbon gas production
摘要
Abstract
To study the kinetics mechanism on supercritical water conversion of shale for gas production,the experiment was carried out in a batch reactor with high temperature and pressure,which the reaction temperature and reaction time were 450-550℃ and 0-480 min,respectively.The results show that the intermediate products have complex compositions,but are mainly dibutyl phthalate and naphthalene derivatives.The gases produced are mainly CH4,C2H6,C3H8,H2 and CO2.The total gas production increases with temperature and reaction time.A simple iterative method based on Peng-Robinson(PR)equation is used to calculate the amount of substance in the gas mixture.Based on the experiment results and lumped parameter method,the reaction kinetics model of shale-intermediate-gas was established.This model can explain the oil and gas changes caused by chemical reaction of shale in supercritical water atmosphere,and can quantitatively describe the mutual conversion of gases.The determination coefficient of the calculated and experimental values of the model is greater than 0.98,which indicates that gas concentrations for different reaction times can be fitted within acceptable deviations over the experimental temperature range.In this study,the mechanism of shale transformation and gas production in supercritical water has been more deeply understood.This provides a deeper understanding for gas production mechanism of shale by supercritical water conversion.关键词
超临界水/页岩/反应动力学/气体/碳氢化合物Key words
supercritical water/shale/reaction kinetics/gas/hydrocarbon分类
化学化工引用本文复制引用
张延龙,赵秋阳,李章剑,陈引,金辉,郭烈锦..超临界水转化页岩生烃气反应动力学研究[J].化工学报,2025,76(11):5594-5603,10.基金项目
国家自然科学基金项目(52488201,52376146) （52488201,52376146）
