Combustion processes in laboratory devices — fire simulations using the lambda' concept — extent of formation of hydrocyanic acid and aromatic compounds

Abstract

Model combustions are performed in order to simulate a real fire situation. The model used, however, and parameters chosen have a considerable impact on combustion products formed and on their amounts. Formation of hydrocyanic acid from nitrogen-containing molecules was studied. For combustion, the VCI-apparatus (Heraeus) was used. The substances a) linuron, b) triazophos (70% formulation) and c) sheep wool contained 10 to 15% nitrogen. At temperatures of 600 and 950°C, portions in the range of 0.4 to 25 mg were combusted. Formation of aromatic compounds at 950°C was studied for triazophos (70% formulation) and 2-ethylhexyl-thioglycolate.