Optimization of the reaction conditions of steam/carbon dioxide and autothermal reforming of methane
E. S. MIKHAYLOVA, A. V. SALNIKOV, S. R. KHAIRULIN
Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
Keywords: coal mine methane, steam/carbon dioxide reforming, autothermal reforming
Pages: 59-63
Abstract
In order to develop a technology for the chemical processing of methane from the coal industry into valuable products, conditions for the reactions of combined steam/carbon dioxide and autothermal reforming of methane were optimized. The effects of temperature (600-900 °C), volumetric feed rate (50-400 mL/min), contact time (0.04-0.45 s) and the molar ratio of components (O2/CH4 = 0.25-1.0, CO2/H2O = 0.5-2.0) of the reaction mixture on the conversion rates of initial reagents (CH4, CO2, O2) and the yield of target reaction products (H2, CO) were studied. It has been shown that the use of combined reforming allows regulating the H2/CO molar ratio within a wide range (4.1-0.9). Optimal process conditions have been established to ensure the complete conversion of methane and the maximum yield of useful products for the effective utilization of methane-air mixtures in coal production with the generation of a hydrogen-containing gas.
DOI: 10.15372/CSD2023439
EDN: GHZGJH
|
