Abstract: A transportable thermal stripping system for removing volatile organic compounds (VOC) from soil is provided. The system includes a vessel in which contaminated soil is placed into contact with a hot gas. The gas is discharged from the vessel and ambient air is introduced into the gas to ensure that the gas remains combustible. A blower circulates the gas to a cyclone separator where fine soil particles and ash are removed from the gas. Next the VOC in the gas are removed by combustion in a burner fired with a supplemental fuel. A portion of the combusted gas is exhausted to atmosphere and the remainder is recirculated to the vessel where the process is repeated.

Abstract: A transportable thermal stripping system for removing volatile organic compounds (VOC) from soil is provided. The system includes a vessel in which contaminated soil is placed into contact with a hot gas. The gas is discharged from the vessel and ambient air is introduced into the gas to ensure that the gas remains combustible. A blower circulates the gas to a cyclone separator where fine soil particles and ash are removed from the gas. Next the VOC in the gas are removed by combustion in a burner fired with a supplemental fuel. A portion of the combusted gas is exhausted to atmosphere and the remainder is recirculated to the vessel where the process is repeated.

Abstract: An apparatus and method are provided for removing volatile organic compounds from soil in order to comply with environmental regulations. The apparatus is comprised of a rotating drum in which the contaminated soil is loaded. The drum contains an auger mechanism which aerates the soil. An air heater generates hot air which is directed to the drum and circulates there-through, causing rapid volatilization of the volatile organic compounds. The volatile organic compounds are then expelled to atmosphere. The removal of volatile organic compounds is conducted in a batch fashion, loading and unloading the drum following each processing cycle. The apparatus is mobile and may be transported to any clean up site.