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Show All these reactions consume Cl atoms that would otherwise react with C2HSCl (via Reaction 189 and 191) and give positive sensitivities. CONCLUSIONS A stirred-reactor model was used to gain insight into the chemical kinetics of combustion of chloroethane. The operating conditions that maximized the destruction efficiency are high temperature, long residence times, equivalence ratios near one, and high dilution. The effect of pressure was more complex, with a minimum in destructive efficiency found near 10 atm. The reaction-rate constants that exhibited the largest sensitivity with respect to destructive efficiency were related to the H2/CO reaction submechanism. In the chlorinated hydrocarbon submechanism, the reactions that exhibited the highest sensitivities were concerned with the fate of the Cl atom. If the Cl atom reacted with chloroethane, the destructive efficiency was increased. If Cl atom reacted with other species, the destructive efficiency was usually reduced . ACKNOWLEDGMENTS The authors thank E. M. Fisher for sending us her chemical kinetic mechanism and paper prior to publication. We also thank Prof. R. F. Sawyer, Prof. Kathy Koshland, Dr. M. J. Hall, Dr. D. Lucas for very useful discussions. We greatly appreciate Dr . W. Tsang sending us his paper prior to publication. This work was supported by Internal Research and Development program of Lawrence Livermore National Laboratory and by the U. S. Department of Energy, Office of Energy Research, Office of Basic Energy Sciences, Division of Chemical Sciences. This work was carried out under the auspices of the U. S. Department of Energy by the Lawrence Livermore National Laboratory under contract No. W-740S-ENG-48 . -6- |