Novel adsorbents applied to integrated energy-efficient industrial CO2 capture

英国政府制定了一个雄心勃勃的目标，到2050年将二氧化碳排放量减少80%。工业过程占欧盟二氧化碳排放总量的25%，而且它们已经达到或接近理论上的效率极限。因此，二氧化碳捕获和储存(CCS)是唯一能够实现所需减排的技术。然而，与二氧化碳捕获相关的效率和资本成本惩罚阻碍了CCS的部署。在这里，工业CCS有机会在更宽的温度范围内运行，并将可用热流与现场脱硫剂再生所需的热量相结合。这项多学科的提案联合了赫里奥特-瓦特大学、赫尔大学和纽卡斯尔大学的顶尖工程师和科学家，以实现我们的愿景，即将新型水滑石固体吸附剂与先进的热集成工艺相结合，用于工业二氧化碳捕获。水滑石材料表现出比其他高温脱硫剂更快的动力学和更好的可再生性，因此在工业CCS中具有很大的潜力；然而，它们在工业捕集过程中的应用在很大程度上仍有待开发。我们将研究新的方法，以增强和定制水滑石在工业过程中所需的各种条件下捕获二氧化碳的性能。我们还将解决这样的挑战：设计一种合适的工艺，在一系列工艺条件(温度、压力、湿度、气体成分)中结合热管理(用于解吸的热回收)和传质(吸附和解吸)的作用，并具有一定程度的经济和技术上可行的灵活性。

The UK Government has an ambitious target to reduce CO2 emissions by 80% by 2050. Industrial processes account for 25% of total EU CO2 emissions, and moreover, they are already operating at or close to the theoretical limits of efficiency. Therefore, CO2 capture and storage (CCS) is the only technology that can deliver the required emission reductions. However, efficiency and capital cost penalties associated with CO2 capture are hindering the deployment of CCS. There is an opportunity here for industrial CCS to operate at a wider range of temperatures and to integrate available thermal streams with heat required for on-site sorbent regeneration. This multidisciplinary proposal unites leading engineers and scientists from the Universities of Heriot-Watt, Hull and Newcastle to realise our vision of integrating novel hydrotalcite solid sorbents with advanced heat integration processes for industrial CO2 capture. Hydrotalcite materials present a big potential for industrial CCS, as they show faster kinetics and better regenerability over other high temperature sorbents; however, their application in industrial capture processes remains largely unexplored. We will research novel methodologies to enhance and tailor performance of hydrotalcites for CO2 capture over a wide range of conditions needed in industrial processes. We will also address the challenge of designing a suitable process that combines the roles of heat management (heat recovery for desorption) and mass transfer (ad- and desorption) across a range of process conditions (temperature, pressure, humidity, gas constituents) with a degree of flexibility that is economically and technically viable.