TITLE : A PHOENICS MODEL FOR REFUSE INCINERATORS

BY : NNC Ltd. - R P Hornby

FOR : NNC Ltd. D,P&E Business Division

DATE : 1994

PHOENICS Version : 1.6 , 2.0

DETAILS :

• Three-Dimensional steady or transient flow
• Variable incinerator geometry
• Combustion model with eddy breakup reaction rate

NOTES :

• CFD is a valuable tool in understanding the flows generated in refuse incinerators and determining their effect on the combustion efficiency
• The model may be used to assess the benefits from proposed design changes to existing incinerators

The pictures are as follows:

1.Flow generated in a typical refuse incinerator.The air flow is approximately 18 m^3/s with one third of this being introduced as secondary flows. 2.Combustion takes place on and above the angled grate and heat is extracted from the flow by tubed water boilers.Total heat generated by combustion is about 60MW. 3.Thermal NOX calculation showing concentration of nitric oxide

For further information about the above model or CFD at NNC please contact :-

Dr Bob Hornby NNC Ltd. Tel : 0565 - 633800 x 3912 Fax : 0565 - 633659

Flow generated in a typical refuse incinerator
Combustion takes place on and above the angled grate
Thermal NOX calculation showing concentration of nitric oxide

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