Alberto Gonzalo

@article{Sanchez2005,

title = {Straw black liquor steam reforming in a fluidized bed reactor. Effect of temperature and bed substitution at pilot scale},

author = {José Luis Sánchez and Alberto Gonzalo and Gloria Gea and Rafael Bilbao and Jesús Arauzo},

url = {https://pubs.acs.org/sharingguidelines},

doi = {10.1021/ef050020s},

issn = {08870624},

year  = {2005},

date = {2005-09-01},

journal = {Energy and Fuels},

volume = {19},

number = {5},

pages = {2140--2147},

publisher = {American Chemical Society},

abstract = {Gasification via the steam reforming of straw black liquor (BL) was performed in a pilot-plant fluidized bed reactor. The effects of bed material replacement (from an initial bed of calcium carbonate to a bed composed of BL char) and bed temperature (575-640 °C) on the dry gas composition, the dry gas lower heating value (LHV), gas yield, fraction of carbon to gas, and cold gas efficiency have been investigated. Although bed defluidization problems were experienced under the operating conditions tested, a medium heating value gas (with a dry gas LHV of ∼8200 kJ/m3 STP) (where STP indicates standard temperature and pressure) was obtained, composed mainly of H2 (65 vol %) and CO2 (30 vol %). Because of the high ratio of steam to biomass used, little influence of the reaction temperature on the gas composition was observed at >550 °C. At 600 °C, which is a temperature lower than that usually utilized in biomass gasification, ∼2.2 m3 STP/kg daf of gas production, 75% carbon conversion to gas, and a cold gas efficiency of 90% were achieved, showing that the low-temperature steam reforming of BL could be a suitable process if bed defluidization can be overcome. textcopyright 2005 American Chemical Society.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Manya2005,

title = {Air gasification of dried sewage sludge in a fluidized bed: Effect of the operating conditions and in-bed use of alumina},

author = {Joan Josep Manyà and José Luis Sánchez and Alberto Gonzalo and Jesús Arauzo},

url = {https://pubs.acs.org/sharingguidelines},

doi = {10.1021/ef0497614},

issn = {08870624},

year  = {2005},

date = {2005-03-01},

journal = {Energy and Fuels},

volume = {19},

number = {2},

pages = {629--636},

publisher = {American Chemical Society},

abstract = {Sewage sludge has recently become a particularly important problem all over the world because of its harmful impact on the environment. The consequent need to develop alternative processes for the use of dried sewage sludge for energy purposes, such as gasification, requires experimental tests in order to quantify the potential energy power of the sludge, as well as to evaluate the optimum conditions for its gasification. There is, however, little information available. In this study, the gasification with air of dried sewage sludge was experimentally investigated using a bubbling fluidized bed. Attention was focused on the influence of the temperature (750-850 °C), the equivalence ratio (25-35%), and the fluidizing velocity (5, 8, and 11 times the value of Umf) on the product yields, gas composition, thermal efficiency, and tar content. The results obtained show the potential for using sewage sludge gasification with air as an option for energy recovery and waste treatment. However, the high tar yield obtained needs to be reduced. Consequently, experiments involving the in-bed use of alumina were carried out. This primary measure has proven effective for tar removal (the content decreases by nearly 40% with in-bed use of alumina at 5 wt%). textcopyright 2005 American Chemical Society.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Sanchez2004,

title = {Kinetic study of the thermal degradation of alkaline straw black liquor in nitrogen atmosphere},

author = {José Luis Sánchez and Gloria Gea and Alberto Gonzalo and Rafael Bilbao and Jesús Arauzo},

doi = {10.1016/j.cej.2004.06.003},

issn = {13858947},

year  = {2004},

date = {2004-11-01},

journal = {Chemical Engineering Journal},

volume = {104},

number = {1-3},

pages = {1--6},

publisher = {Elsevier},

abstract = {The kinetics of solid weight loss in the pyrolysis of straw black liquor solids at low temperature (<500°C) has been studied by thermogravimetric techniques in nitrogen atmosphere. Isothermal and dynamic experiments have been performed. Assuming a first order for the thermal decomposition rate of the solid at a given temperature, the instantaneous kinetic constant for the same temperature diminishes as the reaction proceeds. This could be due mainly to the heterogeneity of straw black liquor solids. Both, the pre-exponential factor and the activation energy of the Arrhenius law, seem to vary linearly with the solid conversion. textcopyright 2004 Elsevier B.V. All rights reserved.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}