Abstract:
Biogas is emitted from landfills, anaerobic digesters, and many other biomass
sources. Emitted biogas is usually burnt in order to reduce greenhouse effect and to
get energy. Burning of biogas emits several pollutants, mainly CO
2
.
Reducing the of emissions is very important in combustion. Emissions of combustion
can be analysed experimentally or by computer simulations. Experiments are very
accurate and expensive. Computer simulation is an economic way of analysing
combustion systems. In this study emissions of biogas combustion are analysed with
computer simulations.
There are several methods of reducing emissions in combustion such as excess air
control, air staging, fuel Staging, flue gas recirculation etc. In this study, the effect of
excess air in biogas combustion is analysed. The range of optimum equivalent ratio
was found as 0.85-1.1.
Emitted gasses get dissipated in the atmosphere with the wind. The environmental
effect from emissions of a 20kW industrial biogas burner in Colombo area was
analysed using CFD simulations. Results show that the ground level is below
environmental standard limits.
, NO
x
and SO
2
Citation:
Bandara, A.M.N. (2021). Development of a biogas combustion CFD model for the analysis of trace emissions [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. http://dl.lib.uom.lk/handle/123/22536