Kernforschungsanlage Julich Gesellschaft MIT Beschrankter Haftung

Werner Jablonski

Heinz Mallek

Dorothee Ermisch

Friedhelm Augustin

Willi Plum

Peter Pelzer

A method of and apparatus for treating radioactively contaminated solvent ste. The solvent waste is supplied to material such as peat, vermiculite, diaton, etc. This material effects the distribution or dispersion of the solvent and absorbs the foreign substances found in the solvent waste. Air or an inert gas flows through the material in order to pick up the solvent portions which are volatile as a consequence of their vapor pressure. The thus formed gas mixture, which includes air or inert gas and solvent portions, is purified in a known manner by thermal, electrical, or catalytic combustion of the solvent portions.

Method of treating radioactively contaminated solvent waste

A method of and furnace for burning waste material. The furnace has a cenl chute for receiving the waste material, and a combustion chamber which is arranged below the chute and has a closed bottom. The transition between the central chute and the combustion chamber is designed as a constriction. The waste material is accumulated above the constriction, where it is dried and degasified up to the point of combustion by being heated up under the exclusion of air in the central chute. Heated up fresh air is supplied ahead of the constriction at below stoichiometric ratio to the heated up waste material and to the exhaust gases formed during the heating up of the waste material. The exhaust gases are withdrawn downwardly through the constriction, and further fresh air is supplied to the exhaust gases and to the degasified waste material for their common combustion at the constriction, so that essentially only ashes pass downwardly into the combustion chamber through the constriction. Fresh air supply lines discharge at the constriction and in the lower portion of the chute above the constriction. A portion of the combustible gases resulting during the degasification and the destructive distillation of the waste material are removed at the constriction. The flue gases formed in the combustion chamber are guided to a flue through discharge openings in the exhaust chamber of the combustion chamber. The exhaust chamber is designed in such a way that it surrounds the central chute. A device is provided in this chute for storing the waste material. Conduits, which extend into the chute from outside and are connectable to a suction device, discharge at the constriction.

Method of and furnace for burning waste material

A furnace for waste material. The furnace has a central chute for receiving he waste material, and a combustion chamber which is arranged below the chute and has a closed bottom. The transition between the central chute and the combustion chamber is designed as a constriction in such a way that the waste material remains above the constriction in the central chute for drying and degasification up to the point of combustion. Essentially, only ashes pass through the constriction downwardly into the combustion chamber. The gases which are withdrawn downwardly out of the chute are also guided through the constriction into the combustion chamber. Fresh air supply lines discharge at the constriction and in the lower portion of the chute above the constriction. The flue gases formed in the combustion chamber are guided to a flue through discharge openings in the exhaust chamber of the combustion chamber. The exhaust chamber is designed in such a way that it surrounds the central chute. A device is provided in the chute for stirring the waste material. A guide arrangement is provided below the transition area between the central chute and the combustion chamber. Starting from this transition area, the guide arrangement is formed as an intermediate wall in such a way that the combustion chamber is divided into an inwardly lying step-down flow portion, and an outwardly lying chamber which at the same time forms the lower portion of the exhaust chamber. Further fresh air supply lines discharge in the region of the lower portion of the exhaust chamber.

Furnace for waste material

A method of and furnace for burning waste material, according to which the aste material is for drying and degasifying same heated in a container whereupon the thus degasified waste material and the waste gases formed during such heating and drying operation are burned in a combustion chamber directly following the container while fresh air is added to the degasified waste material and to the waste gases formed during the heating operation. The heating of the waste material in the container is effected under exclusion of air, and the thus formed waste gases together with the degasified waste material are passed through a constriction located between the container receiving the waste material to be burned and the combustion chamber, the fresh air being added to the degasified waste material and to the waste gases at the constriction.

A plant for burning waste which has a main combustion chamber to be charged ith the waste to be burnt and with fresh gases for burning the waste. From this main combustion chamber the burnt material and unburnt residual material including gases pass through a grate into a post-combustion chamber, the bottom of which is adapted to be closed, and which has lateral outlets for the waste gas. The post-combustion chamber which has a volume at least equalling the volume of the main combustion chamber has a wall structure extending from above into said post-combustion chamber for guiding gases passing through the grate toward the bottom of the post-combustion chamber. This wall structure is open at its lower end and is of highly heat resistant material as e.g. steel. The post-combustion chamber has a waste gas outlet through which the waste gas from the post-combustion chamber is discharged after it has, prior thereto, been purified by passing through filters between an outer wall and inner wall of the post-combustion chamber.

Growing community of inventors

Linnich, Tetz, Germany

Werner Jablonski