Indirect Fired Thermal Desorption
The indirect thermal desorption unit (TDU) consists of an inner rotating barrel enclosed by a heating chamber. Contaminated material is fed continuously into the rotating barrel, which is
indirectly heated by burners in the surrounding heating chamber to desorb the contaminants. Contaminants amenable to treatment via an indirect TDU include essentially all desorption compounds, but the Indirect TDU is ideal for oils and petroleum products. For specific projects such as, drill cuttings, tank bottoms or process filter cake, contamination levels of 30% hydrocarbons or more can be treated.