Rich fume incinerator

Claim 2

IN AN INCINERATION SYSTEM OF FRO EXHAUST GASES EMITTING FROM A STACK, THE COMBINATION COMPRISING: A HOUSING CONFLUENT WITH AND LOCATED OVER RHE UPPER PORTION OF THE STACK, MEANS DEFINING A RESTRICTED ANNULAR PASSAGEWAY IMMEDIATELY SURROUNDING THE EXIT OPENING OF THE STACK AND CONFLUENT WITH THE LOWER PORTION OF THE HOUSING, MEANS FOR SUPPIYING AIR FROM THE SAID ANNULAR PASSAGEWAY AND INTO SAID HOUSING TO PRODUCE AN ANNULAR STREAM OF AIR EFFECTIVE THROUGH ITS ASPIRATING ACTION TO ENHANCE THE EGRESS OF THE EXHAUST GASES FROM SAID STACK INTO SAID HOUSING AND ENTRAIN THEN IN SAID AIR STREAM, AT LEAST ONE BURNER LOCATED WITHIN SAID HOUSING ADJACENT AND LATERALLY OUTWARD OF THE EXIT END OF SAID ANNULAR PASSAGEWAY, MEANS FOR SENSING THE TEMPERATURE IN SAID HOUSING, MEANS RESPONSIVE TO SAID SENSING MEANS FOR CONTROLLING THE QUANTITY OF AIR FROM SAID PASSAGEWAY AND CONTROLLING THE QUANTITY OF AIR AND FUEL TO SAID BURNERS.

Claim 3

The incineration system of claim 1 wherein said housing is provided with a plurality of tangential burners located therein immediately above the exit end of the stack and laterally outward of the exit end of said annular passageway.

Claim 4

In an incineration system for exhaust gases emitting from a stack, the combination comprising: a housing having an upper chamber, a lower chamber, and a reduced section therebetween of essentially cylindrical form, the stack being received within said housing with its exhaust end located within the reduced section of said housing to define therewith a restricted annular passageway communicating with both said upper and lower chambers and immediately surrounding the exit opening of the stack, means for supplying air to said lower chamber to produce an annular stream of air exiting from said annular passageway into said upper chamber and effective through its aspirating action to enhance the egress of the exhaust gases from said stack into said upper chamber and entrain them in said air stream, burner means located within said upper chamber adjacent and laterally outward of the exit end of said annular passageway, means for sensing the temperature in said upper chamber, and means responsive to said temperature sensing means for controlling said air supply means and said burner means.

Claim 5

In an incineration system for exhaust gases emitting from a stack, the combination comprising: a housing having an upper chamber, a lower chamber, and a reduced section therebetween of essentially cylindrical form, the stack being received within said housing with its exhaust end located within the reduced section of said housing to define therewith a restricted annular passageway communicating with both said upper and lower chambers and immediately surrounding the exit opening of the stack, means for supplying air to said lower chamber to produce an annular stream of air exiting from said annular passageway into said upper chamber and effective through its aspirating action to enhance the egress of the exhaust gases from said stack into said upper chamber and entrain them in said air stream, burner means located within said upper chamber adjacent and laterally outward of the exit end of said annular passageway, means for sensing the temperature in said upper chamber, and means responsive to said temperature sensing means for controlling said air supply means and said burner means.

Claim 6

The incineration system of claim 3 wherein said burner means comprises a plurality of burners located adjacent and laterally outward of the exit end of said annular passageway with their longitudinal axes directed generally tangentially relative to the stack.

Claim 7

An incinerator for exhaust gases emitting from a stack and containing combustibles but insufficient oxygen to support the substantially complete combustion thereof, said incinerator comprising a housing having an upper chamber, a lower chamber, and a reduced passageway section therebetween of essentially cylindrical form, the stack being received within said housing with its exhaust end located within the reduced passageway section of said housing to define therewith a restricted annular passageway communicating with both said upper and lower chambers and immediately surrounding the exit opening of the stack, means for supplying air to said lower chamber to produce an annular stream of air exiting from said annular passageway into said upper chamber and effective through its aspirating action to enhance the egress of the exhaust gases from said stack into said upper chamber and entrain them in said air stream, an upwardly facing lateral shoulder in said upper chamber forming the lower end thereof and located immediately above and surrounding the exit end of said stack for stabilizing thereat the flame of the burning exhaust gases in the upper housing, and burner means in said upper housing located adjacent and laterally outward of the exit end of said annular passageway.

Claim 8

An incinerator for exhaust gases emitting from a stack and containing combustibles but insufficient oxygen to support the substantially complete combustion thereof, said incinerator comprising a housing having an upper chamber, a lower chamber, and a reduced passageway section therebetween of essentially cylindrical form, the stack being received within said housing with its exhaust end located within the reduced passageway section of said housing to define therewith a restricted annular passageway communicating with both said upper and lower chambers and immediately surrounding the exit opening of the stack, means for supplying air to said lower chamber to produce an annular stream of air exiting from said annular passageway into said upper chamber and effective through its aspirating action to enhance the egress of the exhaust gases from said stack into said upper chamber and entrain them in said air stream, an upwardly facing lateral shoulder in said upper chamber forming the lower end thereof and located immediately above and surrounding the exit end of said stack for stabilizing thereat the flame of the burning exhaust gases in the upper housing, and burner means in said upper housing located adjacent and laterally outward of the exit end of said annular passageway.

Claim 9

An incinerator as specified in claim 5 wherein the inside wall of said stack is flared out at its upper end to approximately meet with the outside wall of the stack.

Claim 10

An incinerator as specified in claim 5 wherein said burner means comprises a plurality of burners located with their longitudinal axes directed generally tangentially relative to the stack.