THE DESTRUCTION OF METHYLENE-CHLORIDE IN LEAN POST-FLAME CONDITIONS

Lean post flame oxidation is used as an environment to examine the des truction and byproduct formation of CH2 Cl-2. These conditions are sim ilar to poor operating conditions that may occur in hazardous waste co mbustors, where unconsumed CHCs escape the primary flame zone and reac t in the cooler post-flame region. The main byproduct for the injected compound was COCl2. CH2Cl2 also produced C2HCl3 and cis and trans 1, 2-C2H2Cl2. The comparison of these results with data from previously r eported flowreactor studies at pyrolytic and at oxidative pyrolytic co nditions show significant differences in the concentration of the bypr oducts. The main reaction routes for the destruction of the injected C H2Cl2 and for the formation of the detected byproducts are discussed.