Characterization of a highly integrated, natural convection-driven, condensing methanol reactor

A highly integrated, natural convection-driven, condensing methanol reactor with the catalyst bed, heat integration section and liquid product separation in a single pressure vessel without moving parts is successfully tested. Space-time yields of up to 600 kg MeOH m cat. − 3 h − 1 are demonstrated, comparable to other CO 2 -to-methanol processes. The internal recycle by natural convection is successfully achieved as well as significant heat integration. A further reduction of heat losses to the environment is needed for autothermal operation. The dynamic characteristics of the process, with fast start-up times, a high turn-down ratio add to the potential to deal with intermittent feed supply. Overall the LOGIC 2.0 reactor concept is a promising process configuration for green methanol production. • A highly integrated, natural convection-driven, condensing CO 2 to methanol reactor was demonstrated. • Multiple functions (catalyst bed, heat integration and product separation) were integrated in the same device. • Space-time yields of up to 600 kg MeOH ∕m 3 cat. ∕h, comparable to other CO 2 -to-methanol processes, are demonstrated. • Equilibrium limitations are bypassed by circulating the unconverted reactants internally using free convection. • Favourable dynamics (fast start-up and a high turn-down ratio) are proven, showing the potential to operate intermittently.