Energy–saving CO₂ Capture Using Hydrogen Stripping

Abstract

We propose an energy–efficient carbon dioxide (CO₂) capture system for Carbon Capture and Utilization (CCU). In our approach, CO₂ reacts with hydrogen (H₂) derived from renewable energy sources to produce methane. The gas mixture used in the reactor consists of CO₂ and renewable–origin H₂. When hydrogen is introduced into the CO₂ desorption section of the separation process, the partial pressure of CO₂ decreases, leading to an accelerated CO₂ desorption. This acceleration significantly contributes to energy savings across various technologies, including absorption liquid, adsorbent, or membrane separation methods.