Desublimation-based Carbon dioxide (CO₂) removal from the natural gas (NG) in a cryogenic packed bed becomes challenging due to the dry ice formation inside the packed bed. Therefore, the cryogenic packed bed has been used for NG purification only in batch processes. However, to fulfill the energy requirements, it is crucial to develop a continuous process for NG purification, which is difficult for a single cryogenic packed bed. In the current research, a novel cryogenic packed bed system is proposed for continuous capture of desublimation based CO₂ capture from natural gas. The process feasibility of the switching concept was proved through dynamic simulation and experimental study on CO₂ separation from multi-component NG. It was observed that increasing CO₂ content decreases the switching and saturation time of the cryogenic packed bed. The total energy required per packed bed per cycle in the switching system is 133.35. The saturation time for pure CO₂ feed, NG sample-1, and NG sample-2 were 300, 500, and 600 s, respectively. An excellent agreement was observed between the results obtained from the experimental results and that obtained through dynamic simulation. A switching time of 200 s was found for a CO₂ recovery of more than 98 %. This research work offers scientific data and theoretical support for the industrial application of switched cryogenic packed bed setup in CO₂ capture from natural gas in the future. Moreover, in the current research work, scale-up study, and automatic control system for the switched packed bed are recommended for the future.

由于填充床内部形成了干冰，因此在低温填充床中从天然气（NG）中去除基于升华的二氧化碳（CO ₂）变得颇具挑战性。因此，低温填充床仅在间歇过程中用于NG纯化。但是，为了满足能源需求，开发连续的NG提纯工艺至关重要，这对于单个低温填充床来说是困难的。在当前的研究中，提出了一种新颖的低温填充床系统，用于从天然气中连续捕获基于升华的CO ₂捕集。通过动态模拟和对CO _2的实验研究证明了切换概念的工艺可行性。与多组分天然气分离。观察到增加的CO ₂含量减少了低温填充床的转换和饱和时间。交换系统中每个循环每个填充床所需的总能量为133.35。纯CO ₂进料，NG样品1和NG样品2的饱和时间分别为300、500和600 s。从实验结果获得的结果与通过动态模拟获得的结果之间观察到极好的一致性。对于200 ％以上的CO ₂回收率，发现切换时间为200 s 。该研究工作为CO ₂交换式低温填充床装置的工业应用提供了科学数据和理论支持。将来从天然气中捕获。此外，在当前的研究工作中，建议在将来进行放大研究，以及交换床的自动控制系统。