- Email: [email protected]
03943 Recovery of nickel and vanadium from a fly ash of bitumen-in-water emulsion by chemical vapor transport
10
Engines
(power
generation
and propulsion,
electric
vehicles)
95/03943 Recovery of nickel and vanadium from a fly ash of bitumen-in-water emulsion by chemical vapor transport Murase, K. et al., Chem. Left., 1994, (lo), 1845-1848. Discusses the optimum technology for the recovery of Ni and V from a fly ash (from bitumen-in-water emulsion firing, Orimulsion fuel).
95103944 Release rates of volatile matter and sulfur from the solid phase in rapid pyrolysis of coals Sugawara, K. et al., Kagaku Kogaku Ronbunshu, 1994, 20, (6), 971-975. (In Japanese) Kinetic parameters were determined for the release rates of volatile material and sulphur compounds from coals at 1120-1550 K in a free-fall pyroiyzer equipped for rapid heating of coal particles at 2 X 10’ KS.
95103952 Su ercriticai burning of liquid oxygen (LOX) drop. let with detatie 8 chemistry Daou, J. et al., Combustion & Flame, Apr. 1995, 101, (I), 153-169. A numerical study of the supercritical combustion of a liquid oxygen (LOX) droplet in a stagnant environment of hot hydrogen is carried out with a detailed chemistrv model. Soecial attention is devoted to irmition process and diffusion flame structure. Ignition consists typically% the propagation of a premixed flame which is initiated in the Hz-rich hot side.
95103953 Surface phenomena in aiuminium combustion (Communication) Dreizin, E. L. and Tnmov, M. A. Combusrion & Flame, May 1995, 101, (31. \ 378-382. Discusses the widespread research on metal combustion which has revealed some of its primary features. However, some important phenomena observed in early studies still cannot be explained by existing models, and some new results in this field are beynond the scope of the current concepts. II
Similitude and the interpretation of turbulent diffu95103945 sion flames Blake, T. R. and McDonald, M. Combustion & Flame, Apr. 1995, 101, (1). 175-184. Liikrature data on turbulent diffusion flames, such as flame length, momentum flux and mass entrainment, is interpreted through the application of dimensional analysis and a simple integral method for solving the equations of a turbulenijet. The integral theory is adapted from thit of Peters and Gottgens by introducing Morton’s entrainment hypothesis and nondimensionalizing the equations in accord with Blake and McDonald. The data are shown to be functions of a density weighted Froude number, a flame to ambient density ratio, a Shvab-Zel’dovich variable defined by the stoichiometry of the flame, and the original orientation of the jet.
Sin let methyiene removal by saturated and unsat95103946 urated hydrocar \ ons Hayes, F. et al., Combustion & Flame, Mar. 1995, 100, (4), 653-660. Describes the technique of laser flash photolysis/laser absorption which has been used to obtain absolute removal rate constants for singlet methylene.
95103947 Spontaneous ignition limits of siiane and phosphine Kondo. S. ef al.. Combustion & Flame, Aor. 1995. 101. (1). 170-174. Spontaneous ignition limits of silane and phdsphine have been’investigated at relatively low concentrations. For silane, the spontaneous ignition occurs if the mixture concentration is such that the silaneioxygen ratio is higher than a certain threshold limit value. In other words, the mixture is not stable if the ratio is higher than a certain value. On the other hand, in the case of uhosohine the threshold limit line has been found to be a little curved, ihough the reason for the fact is not clear. At any rate, it is concluded that the spontaneous ignition of both siiane and phosphine occurs as a result of a competition of chain branching and chain-breaking reactions, in a way that is qualitatively similar to that in hydrogen oxidation.
95lO3954 Upstream interactions between planar symmetric iaminar methane premixed flames C%;!37Cg. L. and Sohrab, S. H. Combusfion & Flame, May 1995, 101, (3), Unsteady upstream interactive combustion of two stoichiometric planar methane premixed flames that propagate towards each other as they consume the finite slab of combustible gas in betweeen them is numerically investigated.
95103955 The use of image analysis In the modeiiing of coal combustion Lester, E. et al., IChemE Res. Event, Two-Dqy Symp., Inst. Chemical Engineers, Rugby, UK, 1994, 2, 667-669. Describes the link between the petrographic composition of coal and ifs combustion behaviour. Image analysis techniques were used to predict the reactivity of coal as a function of its visual appearance, and also to characterize the chars produced by coal particles after passing through a droptube furnace.
95103956 Veioclt and scalar characteristics of premixed turbulent flames stab1*Trzed by weak swirl Cheng, R. K. Combustion & Flame, AprA995, 101, (l), 1-14. Velocity and scalar statistics of premixed flames stabilized in a novel weak-swirl burner has been studied under a broad range of mixture and turbulence conditions. The nonreacting flows are also investigted to determine the influence of weak-swirl on isotropic turbulence. Deduced from the data are the flame speeds, combustion induced flow acceleration, flame generated turbulence, and flame crossing frequencies. They are compared with previous results obtained in other flame configurations.
c
95103946 Stimulation of diesel-fuel ignition by benzyi radicals (Communication) Clothier, P. Q. et al., Combustion & Flame, May 1995, 101, (3), 383-386.
95103949 Stoichiometric flames and their stabiiitv Aldushin, A. P. et al., Combustion & Flame, Apr. 1995, lOi, (l), 15-25. The authors consider the flame in a stoichiometric combustible mixture of two reactions, A and B, having different diffusivities. They employed a thin reaction zone app_roximat&t and assumed that the reaction ceases when the concentration and temperature approach their thermodynamic equilibrium values. Thus, the analysis accounts for the possibility of a reversible stage in the combustion reactions. They found uniform flames and analyzed both their cellular and pulsating instabilities. The results were compared with those from a one reactant flame as well as with previously obtamed results for a stoichiometric mixture of two reactants.
The structure
of a stoichiometric
Ccl,-CH,-air
fiat
Miller, G. P. Combustion & Flame, Apr. 1995, 101, (l), 101-112. A 244-reaction mechanism containing 60 species was used with the PREMIX computer program to model a stoichiometric carbon tetrachloride-methane-air flat flame with a Cl/H ratio of 0.33. The flame was found to progress in three stages, an initiation stage, a chlorine inhibited oxidation stage, and a CO burnout stage. Some important reactions occurring in each stage were identified.
Suifidation of mixed metal oxides in a fiuidized-bed 95103951 reactor Christoforou, S. C. et al., 1nd. Eng. Chem. Rex, 1995, 34, (I), 83-93. Mixed metal oxide sorbents were prepared for the removal of hydrogen sulphide from a hot gas stream. The desulphurization performance was studied in a fluidized-bed reactor.
262
Fuel and Energy Abstracts
July 1995
10 ENGINES Power Generation Vehicles
and Propulsion,
Electric
95103957 Combined heat and power/ Jones, P. er al., Bldg. Serv. CIBSE J., Feb. 1995, 17, (2), 23-30. Contains three short articles on cogeneration.
Dresden’s energy concept and the significance of 95103956 the Nossener Brucke heat and power plant Stamer, J. H. Fern. Int., Jan.-Feb. 1995, 24, (l), 19-27. (In German) Reports on the Nossener Brucl(e natural-gas fired gas turbine heat and power plant which will shortly go into operation. The new plant will replace the old lignite-burning heat and power plant.
95103959 Effect of control modes and turbine cooling on the part load performance in the gas turbine cogeneration system fic2Ti S. and Ro, S. T. Heat Recovery Sys. CHP, Apr. 1995, 15, (3), Discusses an analysis of the part-load performance in a cogeneration system which consists of a single-shaft gas turbine and a heat recovery steam generator. Considers two distinct part load control modes - constant air flow and variable air flow. Evaluates the effect of variation in the coolant fraction, whose purpose is to maintain the blade temperature as high as possible and thus minimise the coolant consumption.
Engines
(power
generation
and propulsion,
electric
vehicles)
95/03943 Recovery of nickel and vanadium from a fly ash of bitumen-in-water emulsion by chemical vapor transport Murase, K. et al., Chem. Left., 1994, (lo), 1845-1848. Discusses the optimum technology for the recovery of Ni and V from a fly ash (from bitumen-in-water emulsion firing, Orimulsion fuel).
95103944 Release rates of volatile matter and sulfur from the solid phase in rapid pyrolysis of coals Sugawara, K. et al., Kagaku Kogaku Ronbunshu, 1994, 20, (6), 971-975. (In Japanese) Kinetic parameters were determined for the release rates of volatile material and sulphur compounds from coals at 1120-1550 K in a free-fall pyroiyzer equipped for rapid heating of coal particles at 2 X 10’ KS.
95103952 Su ercriticai burning of liquid oxygen (LOX) drop. let with detatie 8 chemistry Daou, J. et al., Combustion & Flame, Apr. 1995, 101, (I), 153-169. A numerical study of the supercritical combustion of a liquid oxygen (LOX) droplet in a stagnant environment of hot hydrogen is carried out with a detailed chemistrv model. Soecial attention is devoted to irmition process and diffusion flame structure. Ignition consists typically% the propagation of a premixed flame which is initiated in the Hz-rich hot side.
95103953 Surface phenomena in aiuminium combustion (Communication) Dreizin, E. L. and Tnmov, M. A. Combusrion & Flame, May 1995, 101, (31. \ 378-382. Discusses the widespread research on metal combustion which has revealed some of its primary features. However, some important phenomena observed in early studies still cannot be explained by existing models, and some new results in this field are beynond the scope of the current concepts. II
Similitude and the interpretation of turbulent diffu95103945 sion flames Blake, T. R. and McDonald, M. Combustion & Flame, Apr. 1995, 101, (1). 175-184. Liikrature data on turbulent diffusion flames, such as flame length, momentum flux and mass entrainment, is interpreted through the application of dimensional analysis and a simple integral method for solving the equations of a turbulenijet. The integral theory is adapted from thit of Peters and Gottgens by introducing Morton’s entrainment hypothesis and nondimensionalizing the equations in accord with Blake and McDonald. The data are shown to be functions of a density weighted Froude number, a flame to ambient density ratio, a Shvab-Zel’dovich variable defined by the stoichiometry of the flame, and the original orientation of the jet.
Sin let methyiene removal by saturated and unsat95103946 urated hydrocar \ ons Hayes, F. et al., Combustion & Flame, Mar. 1995, 100, (4), 653-660. Describes the technique of laser flash photolysis/laser absorption which has been used to obtain absolute removal rate constants for singlet methylene.
95103947 Spontaneous ignition limits of siiane and phosphine Kondo. S. ef al.. Combustion & Flame, Aor. 1995. 101. (1). 170-174. Spontaneous ignition limits of silane and phdsphine have been’investigated at relatively low concentrations. For silane, the spontaneous ignition occurs if the mixture concentration is such that the silaneioxygen ratio is higher than a certain threshold limit value. In other words, the mixture is not stable if the ratio is higher than a certain value. On the other hand, in the case of uhosohine the threshold limit line has been found to be a little curved, ihough the reason for the fact is not clear. At any rate, it is concluded that the spontaneous ignition of both siiane and phosphine occurs as a result of a competition of chain branching and chain-breaking reactions, in a way that is qualitatively similar to that in hydrogen oxidation.
95lO3954 Upstream interactions between planar symmetric iaminar methane premixed flames C%;!37Cg. L. and Sohrab, S. H. Combusfion & Flame, May 1995, 101, (3), Unsteady upstream interactive combustion of two stoichiometric planar methane premixed flames that propagate towards each other as they consume the finite slab of combustible gas in betweeen them is numerically investigated.
95103955 The use of image analysis In the modeiiing of coal combustion Lester, E. et al., IChemE Res. Event, Two-Dqy Symp., Inst. Chemical Engineers, Rugby, UK, 1994, 2, 667-669. Describes the link between the petrographic composition of coal and ifs combustion behaviour. Image analysis techniques were used to predict the reactivity of coal as a function of its visual appearance, and also to characterize the chars produced by coal particles after passing through a droptube furnace.
95103956 Veioclt and scalar characteristics of premixed turbulent flames stab1*Trzed by weak swirl Cheng, R. K. Combustion & Flame, AprA995, 101, (l), 1-14. Velocity and scalar statistics of premixed flames stabilized in a novel weak-swirl burner has been studied under a broad range of mixture and turbulence conditions. The nonreacting flows are also investigted to determine the influence of weak-swirl on isotropic turbulence. Deduced from the data are the flame speeds, combustion induced flow acceleration, flame generated turbulence, and flame crossing frequencies. They are compared with previous results obtained in other flame configurations.
c
95103946 Stimulation of diesel-fuel ignition by benzyi radicals (Communication) Clothier, P. Q. et al., Combustion & Flame, May 1995, 101, (3), 383-386.
95103949 Stoichiometric flames and their stabiiitv Aldushin, A. P. et al., Combustion & Flame, Apr. 1995, lOi, (l), 15-25. The authors consider the flame in a stoichiometric combustible mixture of two reactions, A and B, having different diffusivities. They employed a thin reaction zone app_roximat&t and assumed that the reaction ceases when the concentration and temperature approach their thermodynamic equilibrium values. Thus, the analysis accounts for the possibility of a reversible stage in the combustion reactions. They found uniform flames and analyzed both their cellular and pulsating instabilities. The results were compared with those from a one reactant flame as well as with previously obtamed results for a stoichiometric mixture of two reactants.
The structure
of a stoichiometric
Ccl,-CH,-air
fiat
Miller, G. P. Combustion & Flame, Apr. 1995, 101, (l), 101-112. A 244-reaction mechanism containing 60 species was used with the PREMIX computer program to model a stoichiometric carbon tetrachloride-methane-air flat flame with a Cl/H ratio of 0.33. The flame was found to progress in three stages, an initiation stage, a chlorine inhibited oxidation stage, and a CO burnout stage. Some important reactions occurring in each stage were identified.
Suifidation of mixed metal oxides in a fiuidized-bed 95103951 reactor Christoforou, S. C. et al., 1nd. Eng. Chem. Rex, 1995, 34, (I), 83-93. Mixed metal oxide sorbents were prepared for the removal of hydrogen sulphide from a hot gas stream. The desulphurization performance was studied in a fluidized-bed reactor.
262
Fuel and Energy Abstracts
July 1995
10 ENGINES Power Generation Vehicles
and Propulsion,
Electric
95103957 Combined heat and power/ Jones, P. er al., Bldg. Serv. CIBSE J., Feb. 1995, 17, (2), 23-30. Contains three short articles on cogeneration.
Dresden’s energy concept and the significance of 95103956 the Nossener Brucke heat and power plant Stamer, J. H. Fern. Int., Jan.-Feb. 1995, 24, (l), 19-27. (In German) Reports on the Nossener Brucl(e natural-gas fired gas turbine heat and power plant which will shortly go into operation. The new plant will replace the old lignite-burning heat and power plant.
95103959 Effect of control modes and turbine cooling on the part load performance in the gas turbine cogeneration system fic2Ti S. and Ro, S. T. Heat Recovery Sys. CHP, Apr. 1995, 15, (3), Discusses an analysis of the part-load performance in a cogeneration system which consists of a single-shaft gas turbine and a heat recovery steam generator. Considers two distinct part load control modes - constant air flow and variable air flow. Evaluates the effect of variation in the coolant fraction, whose purpose is to maintain the blade temperature as high as possible and thus minimise the coolant consumption.