煤顶底板破碎岩体对CO2气体吸附特性的实验研究
Experimental Research of Coal Roof and Floor Broken Rock on CO2 Adsorption Characteristics
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摘要: 为揭示煤和页岩吸附CO2气体的特性，在理论上分析了煤和页岩吸附CO2气体的机理和影响其吸附特性的重要因素，应用WY-98A型吸附常数测定仪对煤和页岩对CO2气体的吸附情况进行研究，通过分析实验数据总结煤和页岩样吸附CO2气体的特性，并分别分析了其对CO2气体吸附特性的变化规律，采取了4种经典的吸附模型模拟了煤和页岩对CO2气体的吸附情况，归纳出最佳的描述煤、页岩吸附CO2气体的模型；最后，详细计算了南阳坡和陈四楼以及红庙3个煤矿1 t煤和1 t页岩可吸附CO2的量。研究表明：Dubinin-Astakhov(D-A)方程更适合描述煤和页岩吸附CO2气体的行为。Abstract: For revealing the adsorption characteristics of coal and shale on CO2, the main mechanism and influence factors of CO2 adsorption capacity was studied with theories. The paper studied coal and shale adsorbed CO2 gas phenomena by using WY-98A adsorption determinator systematically. Then the adsorption characteristics of CO2 had been obtained according to a large number of tests results, and different adsorption characteristics and change rules were analyzed. The absorption effect of the imitated coal and shale samples had been evaluated and a suitable model for describing the adsorption of CO2 about coal and shale were selected. Finally, the adsorbed amount of CO2 for 1 t coal and 1 t shale were calculated in Nanyangpo, Chensilou and Hongmiao mining areas. It is better to describe the CO2 adsorption about coal and shale by Dubinin-Astakhov(D-A).
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Keywords:
- coal /
- shale /
- carbon dioxide /
- adsorption characteristic /
- adsorption model /
- adsorption isotherm
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