高阶煤变温变压吸附性能的数学分析-YQ4-15为例

Mathematical Analysis of High Rank Coal's Swing Adsorption under Variable Temperature and Pressure-Taking YQ4-15 as Example

在恒压条件下,因LI温-压-吸附方程的温度偏导(V/T)_P数值小于零,高阶煤的吸附能力随着温度增加而降低。在恒温条件下,因LI温-压-吸附方程的压力偏导(V/P)_T数值大于零,高阶煤的吸附能力随着吸附压力增加而增加。LI温-压-吸附方程的全微分可以计算变温变压条件下,来至吸附温度对高阶煤的吸附能力的负面影响和来至吸附压力对煤的吸附能力的正面影响如何参与竞争。

LI temperature-pressure-adsorption （LI T-P-A） equation can be obtained through the regres- sion method. Under isobaric condition, if LI T-P-A equation＇s partial differential for temperature （δV/δT）P . less than zero, the temperature has a negative impact on coal adsorption capacity. Under isothermal eon- （0V） isgreaterthanzero, thepressurehas dition, if LI T-P-A equation＇s partial differential for pressure （δV/δT）T a positive impact on coal adsorption capacity. The total differentiation of LI T-P-A equation suggests that there is a competition from negative impaet of temperature change and positive impact of pressure change.