Resumo

GOMEZ, ELÍAS; JARAMILLO, ALEJANDRO  e  SANCHEZ, MAURICIO. FLAMELESS COMBUSTION OF NATURAL GAS ON MAGNESIUM OXIDE PACKED BED. Dyna rev.fac.nac.minas [online]. 2007, vol.74, n.151, pp.107-1114. ISSN 0012-7353.

Systems for the combustion of natural gas over MgO with a two-dimensional pseudohomogeneous model were designed. Two packed bed reactors were built: one of carbon steel and the other of ceramic material, both with electric heating and flow and temperature controls. MgO showed activity for the complete oxidation of natural gas without CO or hydrocarbon emissions, maintaining combustion gases temperature below 1400°C. Natural gas oxidation was initiated at 500°C and depending on flow conditions, complete conversion was between 650°C and 850°C. CH4 Conversion was obtained with a catalyst quantity lower than the model predicted value which can be explained from the kinetic point of view because of the presence of iron and calcium on the catalyst surface as MgO activity promoters.

Palavras-chave : Flameless combustion; Natural gas; Magnesium oxide; Packed bed reactors.

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