Burning apparatus with means for heating and cleaning polluted products of combustion

Apparatus for burning material such as waste material and the like from which gases with entrained pollutants are produced comprising:

• at least two combustion chambers, comprising an upper combustion chamber and a lower combustion chamber, said upper and lower combustion chambers being in vertical and lateral stepped adjacency;
• said lower combustion chamber including a grate comprising means for supporting material to be burned, said grate being disposed at a predetermined level;
• said upper chamber including a grate comprising means for supporting material to be burned, disposed at a predetermined level above said lower chamber grate;
• means adjacent said upper combustion chamber for exhausting gases produced by the burning of the material supported on said grates to the atmosphere;
• first fluid communication means between said upper and lower combustion chambers located above said lower chamber grate and below said upper chamber grate;
• second fluid communication means between said upper combustion chamber and said lower combustion chamber located above said upper chamber grate, said second fluid communication means comprising an open area and said upper chamber great being a conveyor grate comprising means for conveying burned and burning material deposited thereon to and through said open area for depositing the burned and burning waste material on said lower chamber grate;
• said upper and lower combustion chamber, said first and second fluid communication means and said exhausting means constituting composite flue means for drawing to below said upper chamber grate a first portion of the flames and gases issuing from the burning material supported on said lower chamber grate and drawing said first portion of flames and gases upwardly through said upper chamber grate and through the burning material supported thereon;
• and
• for comcomitantly drawing to above said upper chamber grate a second portion of the flames and gases issuing from the burning material supported on said lower chamber grate and drawing towards atmospheric exhaust said second portion of flames and gases in admixture with the flames and gases issuing from the burning material supported on said upper chamber grate.