A vertical wet scrubber chamber is communicatively connected with the exit end of the secondary combustion chamber and the combustion gas is directed to pass upwardly therethrough to prevent harmful combustion gases from escaping through the exhaust. This portable incinerator is used for the disposal of small amounts of hazardous waste material in a non-solid and fluent state, and more particularly to such an incinerator wherein a boiling chamber is provided for vaporizing the hazardous waste material, a combustion chamber provides total oxidation of the vaporized waste gas, and a wet scrubber prevents the escape of harmful combustion gases through the exhaust. With the foregoing in mind, it is an object of the present invention to provide a small portable hazardous waste incinerator which is inexpensive to manufacture and may be easily moved to the location where the hazardous waste material is produced so that the hazardous waste material may be disposed of in an economical manner and with a minimum of exhaust combustion gases. The portable incinerator includes a boiling chamber for receiving small amounts of the hazardous waste material therein and for heating and vaporizing the hazardous waste material to form waste gas thereof. A primary combustion chamber is spaced from the boiling chamber and the vaporized waste gas is conducted from the boiling chamber into the entrance end of the primary combustion chamber. Electric arcs are positioned in the entrance end of the primary combustion chamber for igniting and ionizing the mixture of gas and oxygen. A catalytic converter is positioned at the exit end of the primary combustion chamber and the oxidized waste gas passes through the catalytic converter for obtaining total oxidation of the combustion gases.