2013 1(12)

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Pages:

368 - 374

Language:

RU

Ref.:

10


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2013_1(12)_66.pdf

 

 

LOW-EMISSION BURNING OF PREMIXED GAS-AIR MIXTURES IN THE CHAMBER BY COMBUSTION PRODUCTS RECIRCULATION

Soroka B.S.1, Zgurskiy V.A.1, Khinkis M.2

1 The Gas Institute NAS of Ukraine, Kiev, Ukraine
2 Gas Technology Institute (GTI), Des Plaines, USA


Citation:

Soroka B.S. Low-emission burning of premixed gas-air mixtures in the chamber by combustion products recirculation / B.S. Soroka, V.A. Zgurskiy, M. Khinkis // Modern Science: Researches, Ideas, Results, Technologies. - Dnepropetrovsk: SPIC "Triacon". - 2013. - Iss. #1(12). - PP. 368 - 374


Keywords:

carbon oxides CO; low-emission burning; natural gas; nitrogen oxides NO; power and environmental analysis; premixed flow; recirculation; insert (sleeve); water vapor; wet (humid) combustion


Abstracts:

Toxic substances formation: oxides of nitrogen NO and of carbon CO – by premixed flow of natural gas (methane) with an air oxidant combustion has been studied by the procedures of CFD modeling. The combustion process under consideration takes place in cylindrical chamber by various operation conditions. Combustion products (flue gases) recirculation due to arrangement the Recirculation Sleeve coaxially to the chamber walls and an air-oxidant humidification are considered as an impact factors to reduce NO (NOx) issue. It has been stated that we’ve succeeded to great reduction of NO concentration (in combustion products for 4.3 – 4.5 times) by joint effect of both mentioned factors even in conditions of low (20.4 g/kg of dry air) content of water vapor in combustion air. An important advantage of this combined approach makes the attendant lowering of outlet CO concentration at the combustion chamber exit – up to 25 – 30 %. The shortcoming of combustion air humidification is presented by some lowering the power efficiency of the combustion chamber.


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