TH46205B - Methods and equipment for lubricating molded glass molten forms? - Google Patents

Abstract

DC60 (25/06/46) Burner (16, 116, 216) Surface mixing type. It accepts a carbon-containing fuel, for example, an acetylene-based fuel, from the fuel line (20) and an oxidizer, for example, relatively pure oxygen, from the oxidizer line (18). The oxidizer is fed to the burner at a rate sufficient to result in complete combustion of the fuel, thus producing a soot-like flame which is useful for the lubrication of the soot particles to the molten glass contact surfaces of the glassmaking equipment. The burner, which is operated intermittently by a solenoid valve (38) in the oxidizer line and by a solenoid valve (40) in the fuel line, has a fuel inlet passage (60) that extends along the longitudinal axis of the burner's end element (56) and an annular inlet passage (64) that surrounds the fuel inlet passage. The fuel inlet passage is otherwise closed at the end in the direction of its flow. The burners terminate in multiples of separate passages (62) arranged in an annular arrangement, where fuel exits the annular end of the burner on the inside of the oxidizer exiting the annular burner via passage (66) in one ring between the end element and the enclosure element (58) of the burner. The burner serves to ensure rapid mixing of the fuel and oxidizer streams in the direction of the burner stream, thus forming a rapidly ignitable mixture which can be ignited by a spark igniter (54). Two solenoid valves (38, 40) are provided in the oxidizer and fuel lines, respectively, to allow the burner to operate intermittently. The surface mixing type burners (16, 116, 216) accept carbon-containing fuel, for example, an acetylene-based fuel, from the fuel line (20) and an oxidizer, for example, relatively pure oxygen. From the oxidizing line (18), the oxidizing agent is fed into the burner at a rate sufficient to result in complete combustion of the fuel, thus producing a soot flame which is useful for the lubrication of the soot particles to the molten glass contact surfaces of the glassmaking equipment. The burner, which is operated intermittently by solenoid valves (38) in the oxidizing line and by solenoid valves (40) in the fuel line, has a fuel inlet passage (60) that extends along the longitudinal axis of the burner's end element (56) and an annular inlet passage (64) that surrounds the fuel inlet passage. The fuel inlet passage, which is otherwise closed at the end in the direction of its flow, terminates in a number of multiples of separate passages (62) arranged in an annular arrangement, and where the fuel exits the burner's end in an annular fashion. On the inside of the oxidizer, which exits the burner in a ring-like fashion, through a passage (66) in a ring located between the end element and the housing element (58) of the burner, the burner serves to ensure rapid mixing of the fuel and oxidizer streams in the direction of the burner stream, thus forming a rapidly ignitable mixture which can be ignited by a spark igniter (54). Two-way solenoid valves (38, 40) are provided in the oxidizer and fuel lines, respectively, to allow the burner to operate intermittently.

Claims (18)

1. Method of introducing soot particles to the molten glass contact elements of a glassmaking machine. The method consists of: pulsed conveyance of a carbon-containing fuel source to a surface mixing type burner; staggered pulsed conveyance of an oxidizing agent at a rate sufficient to completely oxidize the fuel in the burner; combined intake of fuel and oxidizing agent from the burner, flowing in separate streams to the mold, where they are incorporated as a combustion mixture at the direction of the nozzle stream; and ignition of the combustion mixture of fuel and oxidizing agent between the nozzle and the mold, introducing soot into the mold. 2. Methods in accordance with Claim 1 where the fuel is an acetylene-based fuel. 3. A method in accordance with claim number 2 where the fuel is an acetylene-based fuel consisting of a mixture of acetylene and propadine. 4. A method in accordance with claim 3 where the oxidizing agent consists primarily of pure oxygen. 5. Equipment for producing a soot-filled flame for the application of soot particles to the contact surface of the molten glass in a glassmaking machine. Such equipment consists of a surface-mixing type burner for the separate flow of fuel and oxidizer through which they pass; an oxidizer line for the direct delivery of the oxidizer to the burner; a fuel line for the delivery of carbon-containing fuel to the burner without prior mixing of the fuel and oxidizer; and an igniter for igniting the combustion mixture of fuel and oxidizer at a position in the direction of the flow of the outlet channel from the burner. 6. The device conforms to claim number 5 where the oxidizing line includes only one solenoid for the discontinuous delivery of the oxidizing agent to the burner, and where the fuel line consists of only one solenoid for the discontinuous delivery of the fuel to the burner. 7. Equipment in compliance with claim number 6 and including the oxidizing manifold for conveying the oxidizing agent to the oxidizing line and the fuel manifold for conveying the fuel to the fuel line. 8. Equipment in compliance with claim number 7 and comprising thereto includes a first pressure regulator in the oxidizer manifold for controlling the pressure at which the oxidizer is delivered to the oxidizer line and a second pressure regulator in the fuel manifold for controlling the pressure at which the fuel is delivered to the fuel line. 9. Equipment conforming to claim 5 in which the oxidizing agent is conveyed to the burner to flow in an annular pattern parallel to the axis passing through the longitudinal center of the burner, and the fuel is conveyed to the burner to flow through the burner along a path which is within the radial path followed by the oxidizing agent. 10. An apparatus conforming to claim 9 where the burner consists of an end and a housing, a ring enclosing at least part in the direction of the flow of such end, where the fuel is conveyed to the burner along the longitudinal axis through the end and out of the end through a number of multiples of passages separated from the end, the passages separated from the end arranged in an annular arrangement, and where the oxidizer is conveyed from the burner in the ring between the outside of the end and the inside of the housing and in the flow enclosing the annular passages through which the fuel flows. 11. Equipment in compliance with claim number 10 where the fuel line includes a flash suppressor. 12. Equipment in compliance with claim number 10 where the oxidizing agent includes a flash suppressor. 13. The nozzle of a burner for the partial oxidation of a mixture of fuel and oxidizer to produce soot for use in the glass manufacturing process. The burner nozzle consists of an inner part and an outer part that encloses at least a portion in the direction of the flow of the inner part, and an annular arrangement with the outer part. An expanded passage through the inner part is created for the conveyance of the first gas through the inner part to at least one single outlet from the inner part. An expanded passage through the inner part in the annular arrangement enclosing this first passage is created for the conveyance of a second gas from the burner through the annular arrangement between the outer part and the inner part. 14. The burner, in accordance with claim 13, where the passage extends through the inner part, consists of numerous separate passages which extend from there in an annular sequence. 15. The burner, in accordance with claim 14, where each passage of such separate passage is extended by an angle converging from the longitudinal axis of such internal part. 16. Ignition device in accordance with claim number 5 where such ignition device includes an electrode and a ground electrode and is connected to a source of compressed air, the source of compressed air having a number of outlets directed to such electrode and a number of outlets directed to such ground electrode. 17. The burner, in accordance with claim 18, where such source of compressed air is further comprised of numerous outlets directed to the outside of the surface in the direction of the flow of such burner. 18. The combustion device, in accordance with claim 1 and thereafter, where the process of ignition of the combustible mixture is accomplished by a spark igniter with an electrode and a ground electrode, and thereafter, involves the burning of soot accumulated from the electrode and ground electrode during pulses of fuel containing carbon and an oxidizing agent.