The paper aims to confirm the syngas application as a reburning fuel to reduce e.g. NO emission during natural gas combustion. The main aim of this modelling work was to predict pollutants generated in the exhaust gases and to indicate the influence of the syngas on the natural gas combustion process. The effect of residence time of fuel-air mixture was also been performed. Calculations were made with CHEMIKN-PRO for reburning process using syngas. The boundary conditions of the reburning process were based on experimental investigations. The addition of 5, 10, 15 and 19% of reburning fuel into natural gas combustion was studied. The effects of 0.001 to 10 s of residence time and the addition of 5, 10, and 15% of syngas on combustion products were determined. The performed numerical tests confirmed that co-combustion of the natural gas with syngas (obtained from sewage sludge gasification) in the reburning process is an efficient method of NOx reduction by c.a. 50%. Syngas produced from sewage sludge can be utilised as a reburning fuel.
Topical report number 14, 1999. Reburning technologies for the control of nitrogen oxides emissions from coalfired boilers. A report on three projects conducted under separate cooperative agreements between: The U.S.
Department of Energy and The Babcock & Wilcox Company, Energy and Environmental Research Corporation, New York State Electric & Gas Corporation.
Adamczuk M., Radomiak H., 2010. The use of computer programs for the numerical modelling of combustion process and gas dynamics in heating furnaces. Arch. Combust., 30, 4, 451-458.
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