Study of the deactivation and regeneration of copper chromite on ?-alumina and magnesium chromite on ?-alumina catalysts for fuel combustion

1992 ◽  
Vol 15 (4) ◽  
pp. 347-351 ◽  
Author(s):  
D. A. Arendarskii ◽  
Z. R. Ismagilov ◽  
G. B. Barannik
Keyword(s):  
Copper Chromite ◽  
Fuel Combustion ◽  
Magnesium Chromite ◽  
Alumina Catalysts

WET BURNING – THE MODERN TREND IN ENVIRONMENTAL BENIGN FUEL COMBUSTION AND IN SOLUTION TO THE PROBLEM OF SUSTAINABLE DEVELOPMENT OF THE POWER GENERATION

2018 ◽  
pp. 96-117 ◽  
Author(s):  
B. S. Soroka
Keyword(s):  
Numerical Simulation ◽  
Nitrogen Oxides ◽  
Chemical Kinetics ◽  
Fuel Combustion ◽  
Transport Processes ◽  
Cfd Modeling ◽  
Furnace Chamber ◽  
Modern Trend ◽  
Atmospheric Air ◽  
No Formation

The article considers the role and place of water and water vapor in combustion processes with the purpose of reduction the effluents of nitrogen oxides and carbon oxide. We have carried out the complex of theoretical and computational researches on reduction of harmful nitrogen and carbon oxides by gas fuel combustion in dependence on humidity of atmospheric air by two approaches: CFD modeling with attraction of DRM 19 chemical kinetics mechanism of combustion for 19 components along with Bowman’s mechanism used as “postprocessor” to determine the [NO] concentration; different thermodynamic models of predicting the nitrogen oxides NO formation. The numerical simulation of the transport processes for momentum, mass and heat being solved simultaneously in the united equations’ system with the chemical kinetics equations in frame of GRI methane combustion mechanism and NO formation calculated afterwards as “postprocessor” allow calculating the absolute actual [CO] and [NO] concentrations in dependence on combustion operative conditions and on design of furnace facilities. Prediction in frame of thermodynamic equilibrium state for combustion products ensures only evaluation of the relative value of [NO] concentration by wet combustion the gas with humid air regarding that in case of dry air – oxidant. We have developed the methodology and have revealed the results of numerical simulation of impact of the relative humidity of atmospheric air on harmful gases formation. Range of relative air humidity under calculations of atmospheric air under impact on [NO] and [CO] concentrations at the furnace chamber exit makes φ = 0 – 100%. The results of CFD modeling have been verified both by author’s experimental data and due comparing with the trends stated in world literature. We have carried out the complex of the experimental investigations regarding atmospheric air humidification impact on flame structure and environmental characteristics at natural gas combustion with premixed flame formation in open air. The article also proposes the methodology for evaluation of the nitrogen oxides formation in dependence on moisture content of burning mixture. The results of measurements have been used for verification the calculation data. Coincidence of relative change the NO (NOx) yield due humidification the combustion air revealed by means of CFD prediction has confirmed the qualitative and the quantitative correspondence of physical and chemical kinetics mechanisms and the CFD modeling procedures with the processes to be studied. A sharp, more than an order of reduction in NO emissions and simultaneously approximately a two-fold decrease in the CO concentration during combustion of the methane-air mixture under conditions of humidification of the combustion air to a saturation state at a temperature of 325 K.

Modeling of Solid Fuel Combustion in Furnaces with a Circulating Fluidized Bed

2008 ◽  
Vol 39 (1) ◽  
pp. 65-78
Author(s):  
Yu. S. Teplitskii ◽  
V. A. Borodulya ◽  
V. I. Kovenskii ◽  
E. P. Nogotov
Keyword(s):  
Fluidized Bed ◽  
Solid Fuel ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Solid Fuel Combustion

FLUE GAS PURIFICATION FROM SULFUR OXIDES AND ASH DURING SOLID FUEL COMBUSTION IN LOW-POWER BOILERS

2020 ◽  
Vol 21 (4) ◽  
pp. 355-374
Author(s):  
S. V. Plashykhin ◽  
T. V. Bojko ◽  
D. N. Skladannyy ◽  
Ju. A. Zaporozhets ◽  
Artem S. Safiants
Keyword(s):  
Low Power ◽  
Solid Fuel ◽  
Flue Gas ◽  
Fuel Combustion ◽  
Sulfur Oxides ◽  
Gas Purification ◽  
Solid Fuel Combustion ◽  
Flue Gas Purification

OXY-FUEL COMBUSTION OF CRUDE GLYCEROL USING THERMOGRAVIMETRIC ANALYSIS

2019 ◽  
Author(s):  
Diogo Nunes ◽  
Gretta Larisa Aurora Arce Ferrufino ◽  
Ivonete Ávila
Keyword(s):  
Thermogravimetric Analysis ◽  
Crude Glycerol ◽  
Fuel Combustion

THE ENERGIES AND MOLECULAR PARAMETERS INVOLVED IN THE REACTION OF CH + 1,3-BUTADIENE

2020 ◽  
Author(s):  
A. NIKOLAYEV ◽  
◽  
A. M. Mebel ◽  
V. N. Azyazov ◽  
◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Combustion Products ◽  
Fuel Combustion ◽  
Molecular Parameters ◽  
Earth’S Atmosphere ◽  
Earth's Atmosphere ◽  
Reduce Emissions

This research is devoted to the problem of environmental pollution. The study of various pathways that reduce emissions of fuel combustion products into the Earth's atmosphere is still applicable today.

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