热解煤气吸附动力学研究

针对热解煤气变压吸附提氢过程，开展了CO₂、CO、N₂、CH₄等主要杂质气体在不同吸附剂上的吸附热力学研究，测量了各种杂质气体在不同温度下的吸附等温线，并通过计算获得了相应的吸附焓。结果发现，温度增加导致CO₂、CO、N₂、CH₄吸附能力减弱，吸附压力的增大导致CO₂、CO、N₂、CH₄吸附量增加。不同吸附剂对CO₂吸附能力的顺序:炭分子筛＞活性炭＞铜吸附剂，不同吸附剂对CO吸附能力的顺序:铜吸附剂＞炭分子筛＞活性炭，随着吸附压力的增大，N₂和CH₄吸附焓为定值，不随吸附量变化而变化。

Study on adsorption kinetics of pyrolysis gas

In view of hydrogen extraction process of hydrogen extraction by pressure adsorption of pyrolysis gas，the chemical kinetic of CO₂，CO，N₂，CH₄ in pyrolysis gas was studied by various adsorbents.The adsorption isotherm of gas was measured and adsorption enthalpy was calculated at different temperatures.The results showed that adsorption capacity of CO₂，CO，N₂，CH₄ were reduced with increasing temperature，but improved with increasing pressure.The adsorption capacity of CO₂ increased as molecular sieve >activated carbon >copper-bearing adsorbent.The adsorption capacity of CO increased as copper-bearing adsorbent＞molecular sieve＞activated carbon.The adsorption enthalpy of N₂ and CH₄ was fixed with increasing pressure.