Resumo

SANCHEZ, Mauricio E.; GOMEZ, Elías de J.; VASQUEZ, César A.  e  JARAMILLO, Alejandro. Light hydrocarbons emission treatment with MgO-CaO. Ing. compet. [online]. 2012, vol.14, n.2, pp.91-102. ISSN 0123-3033.

Most current energy requirements for electricity generation, industry and transportation are supplied from fossil fuels by thermal combustion processes, which generates emissions of gases containing light hydrocarbons such as methane, ethane and propane. Among them, methane is a major promoter of the greenhouse effect, many times more harmful than CO2, furthermore it is the hydrocarbon more difficult to oxidize due to its high chemical stability. Among the technologies developed to control those emissions, catalytically supported thermal combustion has been gaining interest. The best results have been achieved with noble metals and simple or combined metal oxides which remain having difficulties with thermal stability and high cost. This project focused on the development and testing of a material based on magnesium oxide doped with calcium oxide, which shown to be low cost, active and thermally stable to promote the complete oxidation of natural gas (3.0%), LPG (0.5%) and mixtures thereof in the presence of CO2 (10%) and excess oxygen below the lower limit of flammability. The presence of LPG facilitated the combustion of natural gas while the presence of CO2 reduced the activity of the material for the hydrocarbons oxidation but decreased CO emissions

Palavras-chave : Catalytic combustion; LPG; MgO-CaO; Methane; Propane.

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