The Experts below are selected from a list of 201 Experts worldwide ranked by ideXlab platform
Didier Dalmazzone - One of the best experts on this subject based on the ideXlab platform.
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Modernization and validation of an isoperibol rotating Bomb Calorimeter for the measurement of energies of combustion of sulphur compounds
Journal of Thermal Analysis and Calorimetry, 2010Co-Authors: Mohammed Ellaite, Didier DalmazzoneAbstract:A rotating Bomb Calorimeter belonging to the Laboratory of Chemistry and Process Engineering (UCP) at ENSTA ParisTech since the 1960s was modernized and re-set in order of service for the measurement of heats of combustion of sulphur-containing compounds. The parts of the Calorimeter that were replaced concerned essentially the thermal regulation, firing system and data acquisition, while most of the mechanical organs were found to work perfectly. The apparatus was tested extensively and calibrated using standard benzoic acid. The standard energy of combustion of thianthrene was measured to validate the operating protocol for sulphur compounds.
Rafael Kandiyoti - One of the best experts on this subject based on the ideXlab platform.
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coal blend performance during pulverised fuel combustion estimation of relative reactivities by a Bomb Calorimeter test
Fuel, 2001Co-Authors: D Peralta, N P Paterson, D R Dugwell, Rafael KandiyotiAbstract:Blending coals as fuel for pulverised-fuel-fired power stations provides a way of minimising costs and increasing fuel flexibility. The use of blends can, however, introduce operating difficulties, such as poor ignition, carbon losses in ash, flame instability and emissions to atmosphere. A simple laboratory method is presented for assessing the changes in the reactivity of coal blends with blend composition. It is based on a commercial Bomb Calorimeter, with small modifications to hardware and procedures. The test is applicable to any size fraction. Two sets of coal samples and their blends, previously tested in a single-burner pilot plant and in a commercial power station, respectively, have been studied using the new Bomb-Calorimeter procedure. The combustion performance of the individual coals was not always consistent with performance at the larger scale. However, the technique was able to distinguish between the combustion reactivities of different blends and reproduce the trends observed in the pilot-scale burner and the full-sized power plant. This laboratory-scale experiment provides a simple means of assessing the relative combustion reactivity of coal blends, using equipment that is simple and generally available.
Mohammed Ellaite - One of the best experts on this subject based on the ideXlab platform.
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Modernization and validation of an isoperibol rotating Bomb Calorimeter for the measurement of energies of combustion of sulphur compounds
Journal of Thermal Analysis and Calorimetry, 2010Co-Authors: Mohammed Ellaite, Didier DalmazzoneAbstract:A rotating Bomb Calorimeter belonging to the Laboratory of Chemistry and Process Engineering (UCP) at ENSTA ParisTech since the 1960s was modernized and re-set in order of service for the measurement of heats of combustion of sulphur-containing compounds. The parts of the Calorimeter that were replaced concerned essentially the thermal regulation, firing system and data acquisition, while most of the mechanical organs were found to work perfectly. The apparatus was tested extensively and calibrated using standard benzoic acid. The standard energy of combustion of thianthrene was measured to validate the operating protocol for sulphur compounds.
D Peralta - One of the best experts on this subject based on the ideXlab platform.
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coal blend performance during pulverised fuel combustion estimation of relative reactivities by a Bomb Calorimeter test
Fuel, 2001Co-Authors: D Peralta, N P Paterson, D R Dugwell, Rafael KandiyotiAbstract:Blending coals as fuel for pulverised-fuel-fired power stations provides a way of minimising costs and increasing fuel flexibility. The use of blends can, however, introduce operating difficulties, such as poor ignition, carbon losses in ash, flame instability and emissions to atmosphere. A simple laboratory method is presented for assessing the changes in the reactivity of coal blends with blend composition. It is based on a commercial Bomb Calorimeter, with small modifications to hardware and procedures. The test is applicable to any size fraction. Two sets of coal samples and their blends, previously tested in a single-burner pilot plant and in a commercial power station, respectively, have been studied using the new Bomb-Calorimeter procedure. The combustion performance of the individual coals was not always consistent with performance at the larger scale. However, the technique was able to distinguish between the combustion reactivities of different blends and reproduce the trends observed in the pilot-scale burner and the full-sized power plant. This laboratory-scale experiment provides a simple means of assessing the relative combustion reactivity of coal blends, using equipment that is simple and generally available.
Michael Ngadi - One of the best experts on this subject based on the ideXlab platform.
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Optimization of the energy value determination method for rice husk using Bomb Calorimeter
2013 Kansas City Missouri July 21 - July 24 2013, 2013Co-Authors: Mohammed Bakari, Michael NgadiAbstract:Abstract. Rice husk is one of the most abundant lignocellulose biomass from postharvest processing of rice, with a high potential as a feedstock for biofuel production. However, in order to utilize it for that purpose, it’s physical, chemical, and thermochemical characteristics’ including its energy (heating) value needs to be determined. In this study, effective method of determining the heating value of rice husk samples using oxygen Bomb Calorimeter (Parr 6772) and ash analysis based on ASTM standard was studied. The result showed that densification of rice husk at medium pressures, using 15% moisture and hold time of 60 seconds produced pellets with good impact resistance index; which combust completely in the oxygen Bomb without spillage. The results also showed that although the impact resistances of pellets from different rice husk samples were significantly different at hold time of 20 seconds, there was no difference in impact resistance at hold time of 60 seconds.