On the temperature control in a microstructured packed bed reactor for methanation of CO/CO₂ mixtures

Abstract

Microreactor technology is widely used for process intensification and is essential for fast and strongly exothermic reactions exhibiting mass and heat transfer limitations. In the scope of the MINERVE Power‐to‐Gas project, sponsored by KIC InnoEnergy from 2012 to 2015, a micro packed bed reactor was developed for conversion of syngas containing CO2 into methane. This work focuses on heat removal and temperature control in a manufactured device using syngas throughputs less than 1.4 Nm3/h (10% CO, 7% CO2, H2/C = 4) while examining the cooling potential of different cooling fluids, e.g., air, steam and water. © 2016 American Institute of Chemical Engineers AIChE J, 63: 120–129, 2017

Hydrogen‐assisted Carbon Dioxide Thermochemical Reduction on La0.9Ca0.1FeO3−δ Membranes: A Kinetics Study

“…Capturing and utilizing CO 2 has both environmental and economic benefits . As CO 2 is an abundant and cheap C 1 feedstock for industry applications, upgrading CO 2 to value‐added chemicals such as CO, CH 3 OH, and CH 4 is an essential step towards a low‐carbon economy. Recently, CO 2 thermal reduction into CO and O 2 was achieved in a ceria membrane reactor at 1500 °C .…”

“…[1] Capturing and utilizingC O 2 has both environmental and economic benefits. [2][3][4][5] As CO 2 is an abundant andc heap C 1 feedstock for industry applications, [3,6] upgrading CO 2 to value-added chemicals such as CO, [7][8][9] CH 3 OH, [10] and CH 4 [11,12] is an essential step towardsalow-carbon economy.R ecently,C O 2 thermalr eduction into CO and O 2 was achieved in ac eria membrane reactor at 1500 8C. [13] Herein, we focus on af uel-assisted CO 2 thermochemicalr eduction process on an oxygen-permeable membrane (OPM), which operates within al ower temperature range of 850-1030 8C.…”

CO2 Methanation in Microstructured Reactors – Catalyst Development and Process Design

“…The methanation in microchannel reactors or better microstructured reactors has been investigated initially more than a decade ago by the group of Brooks from PNNL in the USA . The potential of different cooling agents such as water, steam, and air was evaluated for a micro‐fixed‐bed reactor by Belimov et al . Then, evaporation‐cooling was chosen by Dittmeyer et al from the same group for CO 2 methanation.…”

Enhanced CO2 Methanation by New Microstructured Reactor Concept and Design

“…Normally, inner diameters are in the range of 10-100 micra and 1-10 mL for microchannel reactors and for millichannels reactors respectively [6]. These kind of reactor have a large surface to volume ratio in comparison with the conventional ones, leading to dramatically improved mass and heat transfer coefficients [7,8]. This feature minimizes hot spots formation, thus avoiding or minimizing catalysts sintering and increasing the reaction performance 10-20% compared to conventional reactors [9,10].…”