초록 ▼

A burner assembly for the destruction of noxious vapors and other waste streams includes an inner burner element in the form of a sudden expansion burner and an outer burner element that encircles the inner burner element and forms an annular passageway between the two elements. Waste vapors may be

A burner assembly for the destruction of noxious vapors and other waste streams includes an inner burner element in the form of a sudden expansion burner and an outer burner element that encircles the inner burner element and forms an annular passageway between the two elements. Waste vapors may be conducted directly into the flame of the inner burner element (direct inject) or routed through the annular passageway and preheated, for injection at the flame or beyond. The burner elements may include solid or perforated cones mounted on their exits to enhance mixing and injection of the streams. The burner assembly may be equipped with water injection nozzles for flash oxidation of contaminants in waste waters.

대표청구항 ▼

What is claimed is: 1. A burner system for destruction of vapors and a waste water stream containing hydrocarbon contaminants comprising: a generally tubular elongated outer burner element having a sidewall, a front end having an opening, an opposed open back end, and a flange mounted to said front

What is claimed is: 1. A burner system for destruction of vapors and a waste water stream containing hydrocarbon contaminants comprising: a generally tubular elongated outer burner element having a sidewall, a front end having an opening, an opposed open back end, and a flange mounted to said front end; a generally tubular elongated inner burner element disposed within and spaced inwardly from said outer burner element, said inner burner element being open at opposed front and back ends thereof, including a small diameter front inlet and a larger diameter combustion zone at said back end; an annular passageway formed between the inner burner element and the outer burner element for bypassing cooling air past and around the flame so that vapors may be consumed downstream of the flame; a vapor duct assembly connected to said front inlet, said vapor duct assembly including a duct portion, and a step plate attached to said duct portion and said flange; a spark igniter connected to said vapor duct assembly and passing through said front inlet and into said combustion zone; at least one fuel ignition device mounted to said inner burner element at said combustion zone; one or more cooling water spray nozzles in said burner system; at least one spray nozzle for spraying said waste water stream into said burner system and to atomize the water component; a bypass opening connected to said step plate in fluid connection with said annular passageway; and a fan located adjacent the front end of the burner system connected to said bypass opening for moving air or vapors into said annular passageway. 2. The burner system according to claim 1, further comprising an outer mixing ring disposed in said annular passageway, said ring having a plurality of openings therein. 3. The burner system according to claim 1, further comprising a converging inner mixing cone connected to the back end of said inner burner element. 4. The burner system according to claim 1, further comprising a converging outer mixing cone connected to the back end of said outer burner element. 5. The burner system according to claim 4, further comprising a converging inner mixing cone connected to the back end of said inner burner element. 6. The burner system according to claim 5, further comprising a plurality of openings in said inner mixing cone. 7. The burner system according to claim 5, further comprising a plurality of openings in said inner mixing cone. 8. The burner system according to claim 3, further comprising a plurality of openings in said outer mixing cone. 9. The burner system according to claim 1, wherein said cooling water spray nozzles are located in said vapor duct assembly. 10. The burner system according to claim 1, wherein said waste water spray nozzles is located in said annular passageway. 11. The burner system according to claim 2, wherein said waste water spray nozzles is located at said outer mixing ring. 12. The burner system according to claim 4, further comprising a venturi section attached to the outer mixing cone, said venturi section comprising: a cylindrical duct section; and a diverging conical section. 13. The burner system according to claim 12, wherein said cooling water spray nozzles are located at said venturi section. 14. The burner system according to claim 5, wherein the length of said outer cone is between 쩌 to twenty times the length of said inner cone. 15. The burner system according to claim 5, wherein the width of the outlet of said outer cone is between 쩌 to two times the length of said inner cone. 16. A method for the destruction of waste vapors and a waste water stream containing hydrocarbon contaminants comprising the steps of: providing an elongated chamber having a sidewall, a front end with an opening, and an opposite open back end; providing a sudden expansion burner having an inlet and a back end disposed within said chamber having a relatively small diameter inlet, a relatively larger diameter, elongated combustion zone, and at least one fuel nozzle extending into said combustion zone and an inner mixing cone located at said back end; providing an outer burner element having a front end and a back end, and an outer mixing cone located at said back end; providing a fan located adjacent the front end of the elongated chamber; forming an annular passageway between said burner and said outer burner element; injecting a waste vapor/air mixture into said annular passageway; providing a spray nozzle to inject said waste water stream into said outer burner element and atomize the water component to form a fog; injecting a water spray into said chamber; passing waste vapors into said combustion zone; injecting fuel from said fuel nozzle into said combustion zone; igniting the vapors and the fuel in the combustion zone to produce heat and flame; evaporating the fog; and flash oxidizing the hydrocarbon contaminants. 17. The method according to claim 16, further comprising the steps of: restricting the flow of air and vapors in the annular passageway; and restricting the flow of vapors and combustion products in said sudden expansion burner. 18. The method according to claim 17, further comprising the step of: injecting the waste vapor/air mixture from said annular passageway around and between the inner mixing cone and the outer mixing cone to mix with the flame and heat. 19. A method for the destruction of a first vapor waste stream, a second vapor waste stream, and a waste water stream containing hydrocarbon contaminants in a single burner assembly comprising the steps of: providing an elongated chamber having a sidewall, a front end with an opening, and an opposite open back end; providing a sudden expansion burner disposed within said chamber having a relatively small diameter inlet, a relatively larger diameter, elongated combustion zone, and at least one fuel nozzle extending into said combustion zone; providing a fan located adjacent said front end of said elongated chamber; forming an annular passageway between said burner and said chamber; providing a spray nozzle to inject said waste water stream into said annular passageway; injecting said waste water stream into said annular passageway and atomizing the water component of said waste water stream to form a fog; injecting the first waste vapor stream into said annular passageway; injecting the second waste vapor stream into said combustion zone; injecting fuel from said fuel nozzle into said combustion zone; igniting the air and the fuel in the combustion zone; evaporating the fog; and flash oxidizing the hydrocarbon contaminants. 20. The method according to claim 19, further comprising the step of: injecting the first waste vapor stream into said combustion zone. 21. A method for the destruction of a waste vapor stream and a waste water stream containing hydrocarbon contaminants comprising the steps of: providing an elongated chamber having a sidewall, a front end with an opening, and an opposite open back end; providing a sudden expansion burner disposed within said chamber having a relatively small diameter inlet, a relatively larger diameter, elongated combustion zone, and at least one fuel nozzle extending into said combustion zone; providing a fan located adjacent said front end of said elongated chamber; forming an annular passageway between said burner and said chamber; providing an atomizing spray nozzle for injecting the waste water stream into the annular passageway; injecting said waste water stream into said annular passageway and forming a fog from the water; injecting the waste vapor stream into said annular passageway and said inlet; injecting fuel from said fuel nozzle into said combustion zone; igniting the air and the fuel in the combustion zone; evaporating the fog; and flash oxidizing the hydrocarbon contaminants.