Device for removing carbonizable residues

Device for removing carbonizable residues comprising a closed furnace heatable to low-level carbonization temperature, said furnace having an outlet for carbonization gases formed therein, means for burning off carbonization gases from carbonizable residues and utilizing the heat of combustion therefrom for heating the furnace, said means comprising a burner and a combustion chamber connected to said burner and forming part of a hot gas circulatory system, said hot gas circulatory system also including a container wherein said furnace is disposed so as to be heatable by hot gas circulating through said hot gas circulatory system, and a hot gas return line connecting said container with a mixing chamber communicating with said combustion chamber, a carbonization gas return line connecting said furnace and said combustion chamber for returning to said combustion chamber carbonization gases formed in said furnace, and an inert gas line communicating with the interior of said furnace for supplying inert gas thereto.