2013 1(12)

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Soroka B.S., Zgurskiy V.A.

The Gas Institute NAS of Ukraine, Kiev, Ukraine


Soroka, B.S. and Zgurskiy, V.A., (2013) CFD modeling of transfer processes and of pollutan's formation by premixed combustion the natural gas with air humidified by means of maisotsenko cycle, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(12), PP. 403 - 409.


carbon oxides CO; CFD modeling; combustion; equilibrium thermodynamics; humidified air-oxidant; Maisotsenko cycle; natural gas (methane); nitrogen oxides NO (NOx)


The systematic researches of power and environmental characteristics of combustion process the premixed natural gas (methane) flow with humid air –oxidant has been carried out by means of equilibrium thermodynamics and CFD-modeling techniques.
Possibility of significant improvement of environmental characteristics of combustion including NO and CO formation by an air humidification has been stated. Estimation of harmful substances yield is carried out by means of comparison the NO and CO concentrations at the combustion chamber exit: [NO]еx, [СO]еx – respectively. Specific yields of harmful substances per unit of useful energy are computed with account of combustion efficiency by processing the initial thermodynamic or kinetic data on [NO], [СO] and the flame temperatures. Increase of an air absolute moisture content da by any (even small) air preheats causes the lowering impact of humidity on pollutants formation, being stronger that negative (increasing) effect of temperature growth. As a result of forestalling influence of d the [NO] and [СO] are reduced.
As an example the environmental characteristics improvement somebody can indicate 18 – times reduction of [NO]еx and 2.13 – times [СO]еx decrease by methane burning with saturated air at Та = 325 K in comparison with the pollutants content in flue gases by conditions of dry air-oxidant.


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