Excessive fossil–fuel consumption to meet increased energy demand is considered as the main reason of the climatic change. To prevent this devastating change, hydrogen has gained much attention as an intermediate to replace fossil–fuel–based energy systems by sustainable green energy system. Since most of the H₂ is produced through natural gas process, a trade–off in terms of huge amounts of CO₂ emissions should be concerned. Accordingly, integration of the H₂ production and carbon capture facility actively, called blue H₂, emerges as a workable alternative. In addition, with the rise in CO₂ demand, the liquefaction of captured CO₂ has become an attractive strategy in terms of long–term storage and transportation. Therefore, a comprehensive study is performed to assess the feasibility of an integrated system based on carbon capture using monoethanol amine and four CO₂ liquefaction systems such as Linde-Hampson, dual pressure Linde-Hampson, vapor compression refrigerant, and absorption refrigerant systems (later will use as case 1 to 4, respectively). Based on energy and exergy evaluations, case 4 reflects the higher efficiencies with specific energy consumption of 0.188_el and 0.733th GJ ton CO₂^-1 and exergy efficiency of 85.55 %. In addition, techno-economic analysis calculates unit LCO₂ production of each case; 22.19, 21.35, 21.00, and 24.60 $ ton^-1 for cases 1, 2, 3, and 4, respectively. The quantified climate change impacts were estimated by life-cycle assessment; 0.629, 0.620, 0.608. and 0.674 kg CO₂-eq kg LCO₂^-1 for cases 1, 2, 3, and 4, respectively. Furthermore, analytic hierarchy process is performed to provide comprehensive guidelines of liquefied CO₂ production under technical, economic, and environmental aspects.

为满足不断增长的能源需求而过度消耗化石燃料被认为是气候变化的主要原因。为了防止这种破坏性的变化，氢作为一种中间体，通过可持续的绿色能源系统取代基于化石燃料的能源系统而受到广泛关注。由于大部分 H ₂是通过天然气工艺生产的，因此应该考虑在大量 CO ₂排放方面的权衡。因此，积极整合 H ₂生产和碳捕获设施，称为 blue H ₂，成为一种可行的替代方案。此外，随着 CO ₂需求的增加，捕获的 CO _2液化就长期储存和运输而言，已成为一种有吸引力的策略。因此，进行了一项综合研究，以评估基于使用单乙醇胺和四种 CO ₂液化系统（如 Linde-Hampson、双压力 Linde-Hampson、蒸汽压缩制冷剂和吸收制冷剂系统（后来）的碳捕获的集成系统的可行性将分别用作情况 1 至 4）。基于能量和火用评估，案例 4 反映出更高的效率，单位能耗为 0.188 _el和 0.733th GJ ton CO ₂ ^-1以及火用效率为 85.55%。此外，技术经济分析计算单位 LCO ₂每个案例的制作；案例 1、2、3 和 4 分别为22.19、21.35、21.00 和 24.60 $ ton ^{-1 。}通过生命周期评估估算了量化的气候变化影响；0.629、0.620、0.608。和 0.674 kg CO ₂ -eq kg LCO ₂ ^-1对于情况 1、2、3 和 4，分别。此外，执行层次分析法以在技术、经济和环境方面提供液化 CO _{2生产的综合指南。}