Carbon capture and sequestration (CCS) technology is needed for fossil fuels (FFs) based power generation, in order to make it sustainable in future. Calcium looping gasification (CLG) is a novel energy technology that fulfils CCS, unlike IGCC post combustion, CO₂ capture is not required, making it less energy demanding and saving capital cost, moreover CaO-CaCO₃ is an exothermic reaction, hence the generated heat is adequate to perform CLG. In this study, both experiments and simulations of CLGCC, with CaO as a CO₂ sorbent, were performed at varying gasifier temperatures and pressures using Aspen Plus, while results were compared to maximize the overall efficiency. Here, we propose calcium looping gasification with combined cycle (CLGCC) simulation using Aspen Plus with CaO as CO₂ sorbent, and results are validated against experimental data in terms of gasifier temperature and pressure. The IGCC without CCS system along with CLGCC are simulated simultaneously for comparison. The CLGCC system achieved an efficiency as high as 54.93%, while IGCC's system without CCS efficiency was calculated as 53.22% and corresponding exergetic efficiencies are 51.67% and 50.03%, respectively. The carbon capture efficiency of CLGCC is 83.5 % with 94.4 vol% of CO₂ achieved after steam condensation for carbon capture system. On the basis of results, we demonstrate the applicability of CLGCC against the conventional power plants and it has a great window for adaptation in the future in advanced power plants.

基于化石燃料 (FF) 的发电需要碳捕获和封存 (CCS) 技术，以使其在未来具有可持续性。钙循环气化 (CLG) 是一种实现 CCS 的新型能源技术，与 IGCC 后燃烧不同，不需要CO ₂捕获，从而降低了能源需求并节省了资金成本，而且 CaO-CaCO ₃是放热反应，因此生成热量足以执行 CLG。在本研究中，使用 CaO 作为 CO ₂的 CLGCC 的实验和模拟吸附剂，使用 Aspen Plus 在不同的气化器温度和压力下进行，同时比较结果以最大限度地提高整体效率。在这里，我们建议使用 Aspen Plus 和 CaO 作为 CO ₂吸附剂的联合循环（CLGCC）模拟钙循环气化，并根据气化炉温度和压力方面的实验数据验证结果。不带 CCS 系统的 IGCC 和 CLGCC 被同时模拟以进行比较。CLGCC 系统实现了高达 54.93% 的效率，而没有 CCS 的 IGCC 系统计算效率为 53.22%，相应的火用效率分别为 51.67% 和 50.03%。CLGCC 的碳捕获效率为 83.5 %，CO ₂为 94.4 vol%碳捕集系统蒸汽冷凝后实现。根据结果​​，我们证明了 CLGCC 对常规发电厂的适用性，并且它在未来在先进发电厂中具有很大的适应性。