OP-II-3

OP-III-B-180.25. All experiments were performed at atmospheric pressure with a pre-mixedmethane-air feed; in order to change the fuel-to-oxygen ratio, methane flow rate wasvaried at constant air flow rate (35 l/min). The content of carbon oxides and oxygen inthe reaction mixture was monitored by a permanent gas analyzer; periodically themixture composition (H 2 , O 2 , N 2 , CH 4 , CO, CO 2 ) was analyzed using a CG equippedwith a TC detector and two packed columns (molecular sieves 13X and Porapak Q).ResultsIt was found that being oxidized in the 3D burner, methane can be efficientlyconverted into a H 2 - and CO-containing gas mixture. A stable oxidation is takingplace in a wide range of O 2 /CH 4 ratios. An example of concentration trends of themain reaction products and methane at varied oxygen-to-methane ratio is presentedon Fig.1. Concentrations of H 2 and CO decrease at increasing oxygen content in theinitial mixture, whereas CO 2 content increases. The comparison with the results ofadiabatic thermodynamic calculations demonstrates that the measured values areConcentration, vol.%2015105Н2СО2СОСН4very close to calculated ones: at[O 2 ] 0 /[CH 4 ] 0 = 0.8 and almost totaloxygen consumption hydrogenconcentration varies from 18 to 22 %and CO - from 11 to 14 % atequilibrium values ~25 and ~14%,respectively. CO 2 concentration00.5 1 1.5 2O 2 /CH 4Fig. 1. Concentrations of components in the outlet gasvs.initial oxygen-to-methane ratio.approaches its equilibrium value athigh [CH 4 ] 0 . A treatment of the tilewalls with active catalyticcomponents leads to a significantwidening of the combustion limit for methane-rich mixtures.Thus, the combustion of natural gas (methane) in volumetric permeable matrixburners in the conditions of locked infrared radiation can be considered as a highproductionand adaptable way of syngas and hydrogen production for various lowscale applications.References[1]. V.M. Shmelev and A.D. Margolin. Khim. Fiz., 2000, Vol. 19, No. 5, p. 36.[2]. V.S. Arutyunov, V.M. Shmelev, I.N. Lobanov, and G.G. Politenkova. Theor. Found. Chem. Eng.,2010, Vol. 44, No. 1, p. 20.216