000			02510nab a2200205 4500
005			20260520000842.0
008			260224s2009 xxu
245	0	0	_aComparison between MAT flow fixed bed and batch fluidized bed reactors in the evaluation of FCC catalysts _bNaphtha composition
260			_a _b _cjul./ago. 2009
270			_a15/06/2010 ; 14/06/2010
300			_a7 p. ; 3510-3516
520			_aTranscripción del resumen del autor. A comparison was performed between the performances of a MAT type reactor (flow fixed bed) and a CREC riser simulator reactor (batch fluidized bed) in the conversion of two VGO feedstocks (aromatic and paraffinic types) over three commercial equilibrium FCC catalysts, under similar conditions. In both units the reaction temperatures were 500 and 550 °C. The catalyst-to-oil relationships were from 2.3 to 6.2 (cumulative) and 6.2, and the times were from 15 to 40 s (time on stream) and from 5 to 30 s (reaction time) in the MAT reactor and the CREC riser simulator reactor, respectively. Results were compared in terms of the composition of the naphtha, in view of its contribution to the gasoline pool. Advantages were observed with data from the CREC riser simulator reactor, mainly derived from the fact that naphtha yields were, in general, closer to commercial values and showed a stable primary product behavior. Thus, they are easier to analyze as naphtha selectivities did not depend on the conversion reached. On the contrary, naphtha yields in the MAT reactor showed a maximum as a function of conversion. The comparison of the product distributions observed in the naphthas from each unit at the same conversion level showed that they can be very different; the naphtha obtained in the CREC riser simulator reactor was more paraffinic and less aromatic than the one obtained with the MAT reactor, and the proportions were similar to commercial values. Ranks of catalysts based on the various hydrocarbon fractions observed in the naphtha from each setup also differed in most of the cases. The differences in the results could be the consequence of notoriously different contact between reactants and catalyst and operative modes in each reactor, then impacting on the complex set of reactions occurring in FCC.
581			_a4
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aPassamonti, Francisco J. _941784
100	1		_aSedran, Ulises _924502
100	1		_aDe la Puente, Gabriela _942634
999			_c171003 _d171003