Specific QMetaData
	Id	CPMXFRTOOL1998-06-10937
	DateConceived
	DataType
	Represents
	Method	Since it is difficult to say anything about the radical formation of the various materials, NOx formation has been assumed to be proportional to their heat content. This involves the assumption that the thermal NOx formation plays a more important role. Se notes.
	Literature Reference
	Notes	The emissions of NOx are more dependent on the technical aspects of inceneration than the composition of the material. NOx are invariably formed during inceneration. It may be formed from the nitrogen content of the fuel of the nitrogen in the combustion air. In the incineration of waste which has low contents of nitrogen, the formation of NOx mostly comes from the nitrogen in the air. The NOx is formed from the air in two different ways. 1. Immidiate NOx formation from the nitrogen in the air at the front of the frame due to hydrocarbon radicals from fuel. The amount is fairly small during lage-scale incineration and in most cases can be disregarded. 2. Thermal NOx formation starts at 900 degrees Celsius, but only becomes significant at 1200 degrees Celsius. The higher the temperature and the longer the flue gases remain in the high-temperature zone, the greater the NOx emissions. Refering to McKinsey & Company, Inc. ’’Integrated substance chain management’’ (and appendix); Association of the Dutch Chemical Industry (VNCI); Leidschendamm, The Netherlands; 1991.

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