NOVELTY - An apparatus comprises microwave plasma torch system that provides high-temperature plasma torch in discharge tube (70); fuel injection system that injects hydrocarbon fuels into plasma torch, generates large volume of plasma flame (F1) and maintains all the way to exhaust exit (120); reaction chamber (150) connected in series to flame exit of microwave plasma burner consisted of fuel injection system so that plasma flame enters chamber; and air supply system that supplies contaminated air into reaction chamber through input ports to eliminate warfare agents by exposure to plasma flame.    USE - For eliminating chemical and biological warfare agents e.g. volatile organic compounds and soot from diesel engines or diesel combustion devices; hydrocarbon fuels in gaseous or liquid state e.g. methane, ethane, propane, butane, kerosene, diesel and gasoline in air (claimed) for purifying the interior air of large volume in an isolated space such as buildings, commercial transportation systems, and military vehicles contaminated with chemical and biological warfare agents. The apparatus can also purify air contaminated with volatile organic compounds and eliminate soot from diesel engines.    ADVANTAGE - The apparatus optimizes the fuel injection system so that the injected fuel molecules contact the high temperature torch and decompose effectively without interfering the plasma torch mechanism. This elimination and burnout system is effective against a wide range of chemical and biological warfare agents with a microwave plasma burner connected to a reaction chamber. It achieves efficient and rapid elimination of the toxic agents by oxidation with a microwave plasma torch connected in series to a fuel injector and an appropriate reaction chamber.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a process for eliminating toxic materials in an air stream by exposure to high-temperature plasma flame generated from a microwave plasma burner involving    (1) forming an atmospheric-pressure plasma torch in a discharge tube by electromagnetic waves from a magnetron with the help of an ignition system;    (2) injecting hydrocarbon fuels into the plasma torch, which generate a large volume of high-temperature plasma flame and maintain the plasma flame all the way to exhaust exit;    (3) flowing air contaminated with the toxic materials through input ports so that the air enters the outer compartment of the reaction chamber, swirls in the outer compartment and is preheated;    (4) passing the air through slits from the outer compartment to inner compartment of the reaction chamber to swirl the air in the inner compartment;    (5) oxidizing and burning out the toxic materials in air by oxygen radicals and hot gases generated in the plasma flame inside the inner compartment;and    (6) discharging the air purified by the plasma flame through exhaust exit.    DESCRIPTION OF DRAWING(S) - The figure shows a cross sectional view of apparatus    Discharge tube (70)    Input port (102)    Exhaust exit (120)    Reaction chamber (150)    Plasma flame (F1)