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International Symposium on Multiphase Flow and Transport Phenomena
November, 5-10, 2000, Antalya, Turkey

DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhen


ISBN Print: 1-56700-162-9

MEASUREMENT OF NITROGEN OXIDE EMISSIONS FROM 2MW OIL BURNER FURNACE SYSTEM

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ABSTRACT

This paper presents experimental results obtained from a 2 MW oil burner/furnace system during the warming-up and steady state phase. The experimental work includes temperature profiles and NO-NOx measurements obtained using Chemilimunisence technique and CO measurements obtained using Infrared gas analyser. Measurements were carried out under two operating conditions which were obtained by alterations in power and oil/flow rates. The operating conditions considered during the system operation were at air inlet pressure of 5 mbar (or mixture ratio 1.16) and air inlet pressure of 8 mbar (or mixture ratio 1.63) for 60° oil jet spray angle. The results were analysed and compared for an operating power range of 0.4 to 1.5 MW and two main mixture ratios.

The objectives of this paper are to investigate the performance of a practical light fuel oil spray combustion system and the pollutant gases arising from that system with particular attention on NOx, examine the operating factors that determine the level of emissions such as the effect of inlet air pressure on the levels of NOx as well as searching for new reduction techniques for emissions levels which can be applied to this kind of system.

In this study, NO, NOx, SO2 , N2O, CO and CO2 were measured during the drying-out process, warm-up and steady-state phase. However, most of the discussions are focused on NOx measurements obtained from the furnace, as the levels of SO2, N2O and CO were very small generally. The experimental result showed that the majority of NO formed close to the burner via the oxidation of nitrogenous species. The maximum temperatures occurred closer to the burner exit and flame.

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