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Email: uxue@unizar.es
Address: Office 4.1.01 Aragón Institute Engineering Research (I3A) R&D Building 50018 Zaragoza, Spain
ABOUT ME
Research interests
- High temperature chemistry
- Combustion
- Chemical kinetic modelling
- Biofuel conversion
- Thermochemical processes
- Minimization of pollutant emissions (NOx, SO2, PAH, soot, etc)
PUBLICATIONS
1995
Bilbao, Rafael; Alzueta, María U; Millera, Ángela; Cantín, Valentín
Experimental study and modelling of the burnout zone in the natural gas reburning process Journal Article
In: Chemical Engineering Science, vol. 50, no. 16, pp. 2579–2587, 1995, ISSN: 00092509.
@article{Bilbao1995a,
title = {Experimental study and modelling of the burnout zone in the natural gas reburning process},
author = {Rafael Bilbao and María U Alzueta and Ángela Millera and Valentín Cantín},
doi = {10.1016/0009-2509(95)00119-P},
issn = {00092509},
year = {1995},
date = {1995-08-01},
journal = {Chemical Engineering Science},
volume = {50},
number = {16},
pages = {2579--2587},
publisher = {Pergamon},
abstract = {The reburning process with natural gas is an effective technique which can be applied in existing coal combustors in order to reduce the NOx emissions. The importance of the burnout zone in this process is great, because significant amounts of CO, unburned fuel and reactive nitrogen can reach this zone. The influence of the temperature and the air excess introduced in the burnout zone on the concentration of the nitrogenous species has been studied. Experimental results have been determined of the concentrations of NO, HCN and NH3 in the exit gas for temperatures ranging between 900 and 1100°C and air excesses between 5 and 15%. An empirical correlation which fits the output NO concentration has been obtained. A simplified model has been developed to predict the output concentrations of the most interesting nitrogenous species. textcopyright 1995.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The reburning process with natural gas is an effective technique which can be applied in existing coal combustors in order to reduce the NOx emissions. The importance of the burnout zone in this process is great, because significant amounts of CO, unburned fuel and reactive nitrogen can reach this zone. The influence of the temperature and the air excess introduced in the burnout zone on the concentration of the nitrogenous species has been studied. Experimental results have been determined of the concentrations of NO, HCN and NH3 in the exit gas for temperatures ranging between 900 and 1100°C and air excesses between 5 and 15%. An empirical correlation which fits the output NO concentration has been obtained. A simplified model has been developed to predict the output concentrations of the most interesting nitrogenous species. textcopyright 1995.
Bilbao, Rafael; Alzueta, María U; Millera, Ángela; Duarte, Mario
Simplified Kinetic Model of the Chemistry in the Reburning Zone Using Natural Gas Technical Report
1995.
@techreport{Bilbao1995c,
title = {Simplified Kinetic Model of the Chemistry in the Reburning Zone Using Natural Gas},
author = {Rafael Bilbao and María U Alzueta and Ángela Millera and Mario Duarte},
url = {https://pubs.acs.org/sharingguidelines},
year = {1995},
date = {1995-01-01},
booktitle = {Ind. Eng. Chem. Res},
volume = {34},
pages = {4540--4548},
abstract = {A simplified kinetic model of the chemistry of NO reduction by the action of natural gas has been obtained. This model consists of 87 elementary reactions and 38 chemical species. It takes into account the natural gas decomposition and oxidation, the interaction between NO and hydrocarbons, and the conversion of the intermediate nitrogenous species. The concentrations of the species calculated with the model have been compared with those obtained experimentally using the operating conditions for which a good efficiency in the rebuming zone is achieved. The comparison between the theoretical and experimental data of NO, HCN, CO, and CO2 has been extended to the results obtained over a wide range of values of the operating conditions in the reburning zone.},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
A simplified kinetic model of the chemistry of NO reduction by the action of natural gas has been obtained. This model consists of 87 elementary reactions and 38 chemical species. It takes into account the natural gas decomposition and oxidation, the interaction between NO and hydrocarbons, and the conversion of the intermediate nitrogenous species. The concentrations of the species calculated with the model have been compared with those obtained experimentally using the operating conditions for which a good efficiency in the rebuming zone is achieved. The comparison between the theoretical and experimental data of NO, HCN, CO, and CO2 has been extended to the results obtained over a wide range of values of the operating conditions in the reburning zone.
1994
Bilbao, Rafael; Millera, Ángela; Alzueta, María U
Influence of the Temperature and Oxygen Concentration on NOx Reduction in the Natural Gas Reburning Process Journal Article
In: Industrial and Engineering Chemistry Research, vol. 33, no. 11, pp. 2846–2852, 1994, ISSN: 15205045.
@article{Bilbao1994a,
title = {Influence of the Temperature and Oxygen Concentration on NOx Reduction in the Natural Gas Reburning Process},
author = {Rafael Bilbao and Ángela Millera and María U Alzueta},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/ie00035a039},
issn = {15205045},
year = {1994},
date = {1994-11-01},
journal = {Industrial and Engineering Chemistry Research},
volume = {33},
number = {11},
pages = {2846--2852},
publisher = {American Chemical Society},
abstract = {The reburning process with natural gas is an effective technique which can be applied in existing coal combustors in order to reduce the NOx emissions. The influence of the reburning temperature (1200–1500 °C) and the oxygen concentration coming from the primary combustion zone (0–5%) have been studied. Experimental results of NO, HCN, NH3, CO, CO2, and CH4 concentrations in the exit gas have been determined. The influence of the natural gas decomposition on these results has been analyzed. The experimental trends obtained have been compared with those calculated with the model of Kilpinen et al. (1992). textcopyright 1994, American Chemical Society. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The reburning process with natural gas is an effective technique which can be applied in existing coal combustors in order to reduce the NOx emissions. The influence of the reburning temperature (1200–1500 °C) and the oxygen concentration coming from the primary combustion zone (0–5%) have been studied. Experimental results of NO, HCN, NH3, CO, CO2, and CH4 concentrations in the exit gas have been determined. The influence of the natural gas decomposition on these results has been analyzed. The experimental trends obtained have been compared with those calculated with the model of Kilpinen et al. (1992). textcopyright 1994, American Chemical Society. All rights reserved.