Carbon dioxide desorption intensified by metal atom

Chemical absorption is an effective method to capture CO₂ in industry. The advanced solvent is the key to improve CO₂ capture performance. The single atom fluid, containing a single metal atom in a solvent, is developed as a new solvent to reduce the energy consumption. A density functional theory model coupled with fluid flow is developed for the single atom fluid to capture CO₂. The experiment is performed to validate the model. According to the model, the effects of temperature, pressure, and weight fraction on CO₂ capture performance are studied carefully. It is concluded that the CO₂ desorption occurs at 333 K and the mass transfer coefficient is improved up to 17.95%. The film stretch phenomenon is identified, which produces the slag phenomenon by increasing and decreasing of temperature, pressure, and weight fraction to intensify the CO₂ capture. The mass transfer coefficient improvement is attributed to thinner film, resulting in mass transfer resistance reduction. The energy consumption is finally reduced to 0.85 GJ/t against the conventional 3.0 to 3.9 GJ/t. This provides an alternative and effective method for CO₂ capture.