Patent ID: 9718103
Date: 2017-08-01
CPC Classifications: B09C,F24T,Y02E

Claim:
1. A method for removing a contaminant from soil, the method comprising introducing at least one perforated column into a contaminated region of the soil; introducing at least one non-perforated column into the contaminated region of the soil; heating the non-perforated column to create a contaminant vapor within the soil; and extracting the contaminant vapor via the perforated column, thereby providing remediated soil, wherein the non-perforated column is connected to a surface-located device comprising a combustion, a heating, and a control unit for heating and thereby cleaning the soil, and wherein the non-perforated column comprises: an inner wall; an outer wall positioned around the inner wall so as to create an annular space between the inner and outer walls; a combustion chamber located within the inner wall, the chamber having an entrance and an exit; a primary fluid inlet configured to inject a primary fluid into the entrance of the combustion chamber; a primary fluid inlet valve; a secondary fluid inlet configured to inject a secondary fluid into the annular space; and a secondary fluid inlet valve; wherein the secondary fluid inlet valve controls the flow of the secondary fluid through the annular space between the outer wall and the inner wall, and wherein the secondary fluid cools the temperature of the outer wall and the inner wall and lowers the temperature at the exit of the combustion chamber to 750-850° C.