Enhancing dehydrogenation performance of liquid organic hydrogen carriers based on reactor design:Research progress
Liquid organic hydrogen carrier(LOHC)technology is a promising liquid hydrogen storage technology,but slow kinetics during LOHC dehydrogenation process has restricted the development of LOHC.The reactor design based on heat transfer,mass transfer and kinetics enhancement is an inevitable choice.This paper analyzed the mechanism of LOHC dehydrogenation kinetics enhancement,and pointed out that high concentration of reactants and high temperature on the catalyst surface were the key to high reaction rate,and the byproducts and catalyst deactivation should be reduced.It proposed heat transfer and mass transfer enhancement strategies and introduced the objectives and measures of heat transfer enhancement of fixed bed reactor as an example.It pointed out that mass transfer enhancement should increase the external diffusion rate and avoid the influence of internal diffusion.The research summarized progress and intensification strategies of various types of LOHC"gas-liquid-solid"three-phase reactors.Finally,it summarized the characteristics of these reactors and put forward the possible new reactor design direction.It could provide theoretical ideas and reference for developing new reactors for LOHC dehydrogenation process.
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