Community Research and Development Information Service - CORDIS

Characterisation of the ignition and combustion behaviour of coal/sec fuel mixtures by measurements in a scaled down (0.5MWTH) turbulent flame

Optical fibre flame monitoring system based on analysis of flame pulsation parameters has been developed. The system has been tested in laboratory stand (0.5 MWt) for coal combustion equipped with scaled down (1:10) low-NOx burner. Obtained results show that developed optical fibre system can be applied for characterisation of the ignition and combustion behaviour of different pulverised fuel mixtures

Properties of pulverised fuel, like LHV, volatile content, reactivity, particle size distribution, and other factors influence behaviour of the flame produced in the combustion chamber downstream the model burner. In particular, addition of secondary fuel to the coal affects flame behaviour.

Different pulverised fuels fired in similar turbulent flow conditions produce flames of different brightness, length, pulsation characteristics, and stability limits.

The optical signals from the flame can be recorded by optical fibre system and processed, in order to obtain numerical values, which can be used for flame characterisation.

Such approach can also answer the question whether certain amount of secondary fuel mixed with coal substantially changes flame parameters.

Any new fuel ore mixture of the fuels can be investigated and compared with already investigated one.

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Instytut Energetyki
5 ul. Augustowka 5
02 981 Warszawa
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