Methanol synthesis from CO ₂ and H ₂ in a bench‐scale test plant

Abstract

A small-scale test plant with a methanol production capacity of 50 kg day À1 has been designed and constructed in order to examine the performance of a previously developed Cu/ ZnO-based catalyst under practical reaction conditions. The reaction model for methanol synthesis over the developed catalyst is presented. In addition, the methanol production rates measured in the test plant were found to fit the rates calculated based on the kinetic equations. A 4000 t day À1 methanol synthesis plant from CO 2 and H 2 was designed based on the kinetic equations and the selectivity to methanol over the developed catalyst.

Power-to-liquidviasynthesis of methanol, DME or Fischer–Tropsch-fuels: a review

“…26 By-product formation is promoted by catalyst impurities (residual amounts of alkalis), high pressures, high temperatures (requiring adequate control of the converter temperature), higher CO/H 2 and CO/CO 2 ratios, as well as lower space velocities (higher residence time). 115,116 In industrial applications the common catalyst life time is 4-6 years 95,117,118 with up to 8 years being reported. 102 Life time is limited by catalyst deactivation caused by poisoning and thermal sintering.…”

Ottokraftstoffe aus erneuerbarem Methanol

“…Im Unterschied zum Lurgi‐Verfahren handelt es sich dabei um ein einstufiges Verfahren mit einem isotherm betriebenen Reaktor. Für den kommerziellen Einsatz soll die Abfuhr der Reaktionswärme durch Dampferzeugung realisiert werden .…”

Methanol Synthesis – Industrial Challenges within a Changing Raw Material Landscape

“…The debate regarding the use and implementation of sustainable feedstocks and CO 2 ‐neutral processes for methanol synthesis arrived in the scientific community in the early 90s via contributions from both academic and industrial research groups . As a consequence, new feedstocks are under discussion in order to find methanol synthesis concepts with increasingly lower carbon footprints.…”

“…CO 2 ‐rich gas streams can be captured from industrial processes such as chemical or cement industry as well as combustion‐based power plants . Demonstration facilities at the small and industrial scale have led to enhanced knowledge concerning the advantages and drawbacks of CO 2 ‐based methanol synthesis , , . A benefit of a CO 2 ‐rich MUG for methanol synthesis is the lower heat duty emerging from CO 2 hydrogenation.…”

“…A benefit of a CO 2 ‐rich MUG for methanol synthesis is the lower heat duty emerging from CO 2 hydrogenation. Another advantage compared to conventional processes is the lower catalyst selectivity towards hydrocarbon side‐products, e.g., ketones, leading to lower costs in product purification , , , , , . The main drawbacks of CO 2 ‐based methanol synthesis arise from an increased H 2 consumption due to the formation of H 2 O, leading to lower LHE ext , equilibrium conversion and space time yield , , .…”