Influence of the Methane Combustion Kinetic Model on the Operating Conditions of an Autothermal Catalytic Reactor

Autor:	Eduardo Lopez, Carlos Eugenio Gigola, Verónica Bucalá, Noemi S. Schbib
Rok vydání:	2001
Předmět:	Methane reformer Chemistry business.industry General Chemical Engineering Catalytic combustion General Chemistry Industrial and Manufacturing Engineering Methane Reaction rate chemistry.chemical_compound Chemical engineering Natural gas Heat generation Combustor business Unburned hydrocarbon
Zdroj:	Industrial & Engineering Chemistry Research. 40:5199-5205
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie001063t
Popis:	This work focuses on the study of the influence of the methane combustion kinetics on the operation of an autothermal catalytic reactor for heat generation (domestic scale). The feed (methane and air) is preheated by means of a direct heat exchange by recycling a fraction of the hot gases leaving the catalytic combustor (recycle monolithic reactor). Two kinetic models are proposed to represent the reaction. The kinetic parameters were adjusted using experimental data obtained from methane combustion over a laboratory catalyst (Pd on γ-Al 2 O 3 wash-coated cordierite monolith). Experiments were carried out for different feed temperatures (310-500°C), total flow rates (250-750 cm 3 /min (STP)), and inlet methane concentrations (0.8-1.6%). A heterogeneous unidimensional steady-state model was employed to analyze the autothermal reactor performance. Using the best-fitted reaction rate expressions, conservative operating conditions are estimated to guarantee reactor stability, almost complete methane conversion (i.e., minimal unburned hydrocarbon emissions), and a high heat generation rate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b577452016e3cc509207b5001653b1e8 https://doi.org/10.1021/ie001063t Zobrazit plný text záznamu