Spontaneous supergravity field drives liquid-phase microelements to enhance CO2 capture through self revolution coupling

Abstract

In the pursuit of global carbon neutrality, the emissions of carbon-containing flue gas resulting from methanol production pose a significant challenge to the chemical industry’s efforts to achieve this goal. It is imperative to develop cost-effective and low-carbon carbon capture technologies. This study introduces the hydro-jet oscillating purifier (HOP) that utilizes spontaneous supergravity to promote the self-revolution coupling motion of liquid-phase microelements, thereby enhancing mass transfer efficiency. The research further investigates the effect of the HOP’s overflow pipe model on the mass transfer process and determines optimal parameters for carbon capture. The gas phase generates a vortex supergravity field that disrupts the liquid column, leading to the formation of uniformly dispersed liquid-phase microelements that engage in self-revolution coupling motion. The presence of these liquid-phase microelements increases the turbulent kinetic energy within the vortex supergravity field, which accelerates the movement of surface molecules in the liquid phase. Mass transfer efficiency and carbon capture efficiency can be improved by increasing the mass transfer area, increasing the absorption capacity, and minimizing the liquid film resistance. A mass transfer coefficient model was established for various overflow pipe lengths, resulting in a maximum mass transfer coefficient of 36 kmol·kPa⁻¹·m⁻³·s⁻¹ and a carbon capture efficiency of 83%. This article presents a high-efficiency technology for flue gas carbon capture, which is expected to facilitate the low-carbon transition in the chemical industry and support the timely achievement of carbon neutrality goals.