000			01626nab a2200205 4500
005			20260520000841.0
008			260224s2009 xxu
245	0	0	_aCoproduction of syngas and lime by combined CaCO3-calcination and CH4-reforming using a particle-flow reactor driven by concentrated solar radiation
260			_a _b _cnov./dic. 2009
270			_a09/06/2010 ; 09/06/2010
300			_a6 p. ; 6207-6212
520			_aTranscripción del resumen del autor. The combined CaCO3-calcination and CH4-reforming process is investigated using concentrated solar energy as the source of high-temperature process heat. The thermodynamic equilibrium composition indicates the coproduction of lime and syngas (H2/CO molar ratio = 1) at above 1200 K and 1 bar. Exploratory experimental runs were carried out with a 5 kW solar chemical reactor comprised of a windowed cavity-receiver containing a flow of CH4 with suspended CaCO3 particles and directly exposed to high-flux solar radiation. At an optimal reactor configuration, CaCO3 and CH4 conversions of 83% and 38%, respectively, were achieved during 11 min of irradiation at a solar concentration ratio of 1884 suns and a nominal temperature of 1223 K. Effecting simultaneously both reactions in a single solar-driven reactor eliminates CO2 emissions derived from the separate fossil-fuel-based production of these two energy-intensive material commodities.
581			_a6
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aNikulshina, V. _942463
100	1		_aHalmann, M. _942464
100	1		_aSteinfeld, A. _942465
999			_c170872 _d170872