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Untersuchung der Schadstoffemissionen bei der Verbrennung von Treibstoffen in Luftatmosphäre

Combustion of propellants in air - emission products of environmental interest
 
: Gröbel, V.; Weiser, V.; Eisenreich, N.; Krause, H.H.

Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Waste management of energetic materials and polymers
Pfinztal, 1992 (Proceedings of the International Annual Conference of ICT 23)
ISSN: 0722-4087
pp.15.1-15.15
Fraunhofer-Institut für Chemische Technologie (Internationale Jahrestagung) <23, 1992, Karlsruhe>
German
Conference Paper
Fraunhofer ICT ()
combustion; exhaust gas; explosives; flame temperature; incineration; nitrocellulose; NOx; propellant; thermal disposal

Abstract
It was developed and build up an apparatus in laboratory scale to investigate the incineration of propellants by various air-ratios. The apparatus allowed to sample and to analyse the exhaust-gases. Nitrocelluloses (NC) with 13.1 weight-% nitrogen was used as model-substance. Flame temperatures were measured under various air-ratios. It was determined a maximum flame temperature of 1900 K. The exhaust-gases showed very high emissions of NOsubx they are high above the thermodynamic equilibrium. Lowest NOsubx-emissions were found at the range about the stoichiometric air-ratio corresponding to the highest temperatures, therefore, to achieve best primery NOsubx reduction is the thermodynamic equilibrium concentration at the corresponding temperature. Additionally NC was mixed with urea (mol-ratio: urea:nitrocelluloses is equal 1.3:1), which caused a 50% NOsubx reduction. This mixtures showed maximum flame temperatures of about 1300 K correspondent to an air ratio of 1.6.

: http://publica.fraunhofer.de/documents/PX-37781.html