In this study, two types of adsorbents, Molecular sieve 3 Å and Silica gel 8–20 mesh were used for CO₂ separation from CO₂/N₂ mixture in a fixed bed column. The impact of the temperature, superficial velocity and CO₂ partial pressure on the breakthrough behavior, adsorption capacity and mass transfer zone has been thoroughly investigated. The breakpoint time declined with increased temperature, and maximal breakthrough period of 870 s was attained at a temperature of 30 °C using molecular sieve 3 Å, which is significantly higher than that obtained for Silica gel 8–20 mesh. Furthermore, the width of the mass transfer zone (MTZ) increases with reduced bed temperatures, which signifies the extent of utilization of bed capacity at the breakpoint. The breakpoint time increases with reduced superficial velocity, and the prolonged breakthrough time was achieved at a minimal superficial velocity of 0.026 m/s for MS 3 Å. The adsorption capacity reduced considerably with elevated temperature, and the maximal adsorption capacity of 903.8 mmol CO₂/Kg adsorbent was determined at a temperature of 30 °C for MS 3 Å. The capacity increases considerably with increased feed superficial velocity, and the capacities of 792 mmol CO₂/Kg and 152.9 mmol/Kg adsorbent were achieved for MS 3 Å and SG 8–20 mesh, respectively, at a constant superficial velocity of 0.042 m/s. The capacity increases considerably with increased partial pressure of the CO₂, and an adsorption capacity of 894.7 mmol CO₂/Kg adsorbent was acquired with an equilibrium partial pressure of 0.4 bars utilizing MS 3 Å. An adsorption capacity of 167.84 mmol/Kg adsorbent was evaluated at a partial pressure of 0.40 bars by controlling the temperature at 30 °C for SG 8–20 mesh. Owing to its remarkably higher capacity, the MS 3 Å adsorbent can be economically utilized for separation of CO₂ from CO₂/N₂ mixture.

在这项研究中，两种类型的吸附剂，分子筛3埃和硅胶8-20目被用于CO ₂分离由CO ₂ / N ₂在固定床柱混合物。温度，表面速度和CO _2的影响分压对突破行为，吸附能力和传质区的影响已得到深入研究。断点时间随着温度的升高而下降，在30°C的温度下使用3Å分子筛可达到870 s的最大穿透时间，这明显高于8-20目硅胶。此外，传质区（MTZ）的宽度随着床层温度的降低而增加，这表明在临界点床层容量的利用程度。断点时间随着表观速度的降低而增加，对于MS 3Å，在最小表观速度为0.026 m / s的情况下延长了突破时间。吸附量随温度的升高而显着降低，最大吸附量为903.8 mmol CO对于MS 3，在30°C的温度下确定了₂ / Kg吸附剂。容量随着进料表观速度的增加而显着增加，在恒定表观速度为0.042 m / m的情况下，MS 3Å和SG 8-20筛分分别达到792 mmol CO ₂ / Kg和152.9 mmol / Kg吸附剂。 s。随着CO _2的分压增加，容量显着增加，并且吸附容量为894.7 mmol CO ₂使用MS 3，在0.4 bar的平衡分压下获得/ Kg吸附剂。通过控制30°C的SG 8-20筛网的温度，在0.40 bar的分压下，吸附容量为167.84 mmol / Kg吸附剂。由于其明显更高的容量，MS 3吸附剂可以经济地用于从CO ₂ / N ₂混合物中分离出CO ₂。