Considering the critical roles of hydrogen in energy transition and the renewable character of biogas, an integrated process linking ionic liquid (IL) based biogas upgrading and thermal plasma (TP) assisted hydrogen production is conceptually proposed and studied from the process intensification point of view. To select a practically suitable IL absorbent for biogas upgrading, an IL screening is first conducted from an experimental database exhaustively collected from the literature. Following the thermodynamic screening and the assessment of important physical properties, the retained IL is evaluated in the conceptual biogas upgrading process. After that, the upgraded biogas with high biomethane purity is fed into a simulated TP reactor for the production of hydrogen by decarbonisation, where solid carbon could be simultaneously obtained as a second product. The improvement of the combined process is further examined by strategies of heat and power integration. The configuration of the whole integrated process is finally presented, showing a promising scenario for energy efficient and sustainable production of hydrogen.

考虑到氢在能源转型中的关键作用和沼气的可再生特性，从过程强化的角度，概念性地提出并研究了一种将基于离子液体 (IL) 的沼气提纯和热等离子体 (TP) 辅助制氢的集成过程联系起来。为了选择实际适用于沼气升级的 IL 吸收剂，首先从从文献中详尽收集的实验数据库中进行 IL 筛选。在热力学筛选和重要物理特性评估之后，在概念沼气升级过程中评估保留的 IL。之后，将具有高生物甲烷纯度的提纯沼气送入模拟 TP 反应器，通过脱碳制氢，其中固体碳可以作为第二个产品同时获得。热电一体化策略进一步检验了联合工艺的改进。最后介绍了整个集成过程的配置，展示了能源高效和可持续生产氢气的前景。