000			01732nab a2200205 4500
005			20260520000835.0
008			260224s2009 xxu
245	0	0	_aInfluence of TiO2 additive on vaporization of potassium during straw combustion
260			_a _b _cnov./dic. 2009
270			_a08/06/2010 ; 08/06/2010
300			_a7 p. ; 5367-5374
520			_aTranscripción del resumen del autor. In this work, the influence of TiO2 on the vaporization of K during combustion of straw under fixed bed condition was investigated experimentally. Controlled combustion experiments with a varied amount of TiO2 in straw pellets were performed in an 8 kW pellet burner together with sampling of particles (impactor and absolute filter), analysis of the flue gas composition (Fourier transform infrared, FTIR), and chemical analyses of the collected particles and bottom ash (inductively coupled plasma-atomic emission spectroscopy (ICP-AES), scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS), and X-ray diffraction (XRD)). The experimental results showed that the vaporization of K from the fuel bed was significantly reduced when TiO2 was used as an additive. The vaporization of K was reduced by 40-50% for an optimal amount of TiO2 additive. The optimal added TiO2 for the straw used in this work corresponds to a Ti/K (wt) ratio between 0.6-1.0. If more TiO2 was added to the fuel, the release of K to the gas phase was not further reduced and unreacted TiO2 was found in the bottom ash.
581			_a6
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aWiinikka, Henrik _935998
100	1		_aGrönberg, Carola _942228
100	1		_aÖhrman, Olov _942229
999			_c170767 _d170767