A perspective on multi-component resistance analogy analysis for process intensification: Taking supercritical water gasification of coal as an example

Resistance analysis widely focuses on many aspects of scientific research such as flow, heat transfer, and electrical conductivity. However, resistance analysis is often limited to a specific field, and engineering applications (such as supercritical water gasification process) often require the coupling of multiple resistances. Supercritical water gasification (SCWG) provides a clean and low-carbon way of coal utilization for hydrogen production. Realizing the complete gasification of coal under mild temperature conditions is the prerequisite for the industrialization of this technology. Therefore, measures must be taken to reduce the process resistance and accomplish the process intensification. In this paper, a novel idea of multi-component resistance analogy analysis was applied to solve this problem from the perspective of intensification of interface reaction, boundary layer, and vertex diffusion, respectively. Based on the current research progress and outstanding issues, the further research will focus on the application of resistance analogy analysis to general multiphase flow and reactor optimization design and scale-up.