Methanation of carbon monoxide by a fluidized catalyst bed

Abstract

Methanation of CO in a fluid bed, carried out by Ni catalyst at 573 K and atmospheric pressure, was studied experimentally and theoretically. Reaction rates of methanation and the water-gas shift reaction were measured in a fixed bed reactor. A fluid bed model considering a decrease in number of moles caused by reactions is proposed to analyze the data obtained with a fluid bed reactor of 8.1cm i.d. An effective bubble diameter is introduced as an adjustable parameter in the model. The experimental results are well explained by the model when the bubble diameter is assumed to be 3.6 cm. It is found that the influence of the decrease in number of moles on conversion cannot be ignored in analyzing the fluid-bed reaction data. © 1984, The Society of Chemical Engineers, Japan. All rights reserved.