Method for thermic disposal of waste materials

A method of thermic disposal of waste materials such as sewage sludge, special garbage and the like, comprising the steps:

• predrying waste materials, passing the predried waste materials through a cyclone at temperatures in excess of 1500.degree. C. forming molten slag low in noxious substances and hot gas containing valuable substances and noxious substances;
• passing the exhaust gas from the cyclone through a first exhaust gas cooling process and separating valuable substances from the gas following the first exhaust gas cooling;
• passing the exhaust gases through a second exhaust gas cooling and separating out noxious substances by partial condensation;
• utilizing exhaust gas from the second cooling for said predrying of material;
• further passing cyclone exhaust gas following the second cooling step through dedusting and superfine gas scrubbing processes separating dust residues and noxious substances not removed in the cooling steps.

A mechanism for thermic disposal of waste materials such as sewage sludge, special garbage or the like, comprising in combination:

• a high temperature cyclone maintained at a temperature above 1500.degree. C. for burning dried waste materials;
• means for delivering dried waste materials to said cyclone;
• a first cooler connected to receive hot exhaust gas from the cyclone containing valuable substances and noxious substances and separating out valuable substances by partial condensation in the cooler;
• and
• a second cooler connected to receive exhaust gas from the first cooler and separating out noxious substances.

A mechanism for thermic disposal of waste materials such as sewage sludge, special garbage of the like, comprising in combination:

• a high temperature cyclone for burning dried waste materials;
• means for delivering dried waste materials to said cyclone;
• a first cooler connected to receive hot exhaust gas from the cyclone containing valuable substances and noxious substances and separating out valuable substances by partial condensation in the cooler;
• a second cooler connected to receive exhaust gas from the first cooler and separating out noxious substances;
• and a bulk fill filter for superfine dedusting and gas scrubbing receiving gas from the second cooler.

A mechanism for thermic disposal of waste materials such as sewage sludge, special garbage of the like, comprising in combination:

• a high temperature cyclone for burning dried waste materials;
• means for delivering dried waste materials to said cyclone;
• a first cooler connected to receive hot exhaust gas from the cyclone containing valuable substances and noxious substances and separating out valuable substances by partial condensation in the cooler;
• a second cooler connected to receive exhaust gas from the first cooler and separating out noxious substances;
• and means for adding dust to said first cooler.