CN117720072A - A method for removing trace amounts of water from sulfur dioxide protective gas in glass annealing kiln - Google Patents

Abstract

A method for removing sulfur dioxide shielding gas trace water of a glass annealing furnace relates to a method for removing sulfur dioxide trace water, wherein a single liquefied sulfur dioxide tank is connected with shielding gas passages (20) of two sets of cooling systems through pipelines or two liquefied sulfur dioxide tanks are respectively connected with shielding gas passages of one set of cooling system, and a water removal box is arranged on each shielding gas passage pipeline; an air inlet pipe (27) arranged at one end of the water removal box is connected with an air inlet direction pipeline of the protective air passage, an exhaust pipe (33) arranged at the other end of the water removal box is connected with a hot air cooling pipe (15) of the protective air passage, water absorption paper (30) for isolating the air inlet pipe from the exhaust pipe and leading through is arranged in a box cavity (40) of the water removal box, and trace water in sulfur dioxide is left in the water removal box by the water absorption paper; the present disclosure obtains a reduction in trace amounts of water from the water absorbing paper that alternately uses two sets of cooling system water removal cartridges by arranging the cooling systems in two sets.

Description

A method for removing trace amounts of water from sulfur dioxide protective gas in glass annealing kiln

Technical field

The present invention relates to a method for removing trace amounts of sulfur dioxide water. Specifically, the invention relates to a method for removing trace amounts of water from sulfur dioxide protective gas in a glass annealing kiln.

Background technique

As a high-end product in float glass, electronic glass is constantly being developed and applied. Its quality requirements are also increasing with the expansion of application fields. The continuous stability of product quality has become the ultimate goal pursued by all electronic glass companies. How to make it To achieve this goal, every step of the product from raw materials to molding needs to be continuously stable; sulfur dioxide is a protective gas used in float glass processing. Sulfur dioxide has certain effects on improving the physical, chemical and mechanical properties of the glass surface and extending the service life of the rollers. Therefore, improving the purity of sulfur dioxide as a protective gas has become the key to improving the above indicators. Improving the purity can effectively reduce the adhesion and oxidation of tin and ensure a uniform film layer. Since sulfur dioxide contains trace amounts of water, how to remove trace amounts of sulfur dioxide during use? Water has become a major requirement for improving quality; in conjunction with Figure 1, the manufacturing process of float glass is to put the raw materials into the furnace (9) with the kiln roof (11) through the feeding port, and the raw materials in the furnace (9) are heated by high temperature After melting, the molten glass (10) is formed, and the flowing molten glass (12) on the upper part of the molten glass (10) flows into the surface of the molten tin (7) of the tin bath (6) through the connection groove (8) and the baffle (14). Under the action of gravity and surface tension, the molten glass molten glass (12) on the surface of the molten tin (7) spreads and flattens out on the surface of the molten tin to form glass strips with flat surfaces and parallel to each other, and then moves towards the tail of the tin bath (6) Pulling, and then through polishing, thinning, hardening, and cooling, this process passes through the flattening polishing area (13), cold coating area (16), thinning area (18), and cooling area (19) in sequence, and the glass is After pulling out the tin bath (6), it enters the annealing kiln (2) through the supporting roller B (5) and onto the supporting roller A (3) set above the kiln bottom (4). It is then annealed and cut to obtain the flat glass (1) ; Among them, the flattening and polishing area (13), the cold coating area (16), the thinning area (18) and the cooling area are distributed in the upper part of the tin bath (6) from the direction of the melting furnace (9) to the direction of the annealing furnace (2). (19), the aforementioned zone is achieved by passing the sulfur dioxide into the upper part of the tin bath (6) through the protective gas passage (20) and the hot air cooling pipe (15) and then ejected from multiple air nozzles (17); when the liquefied sulfur dioxide enters The removal of trace amounts of water from sulfur dioxide in front of the hot air cooling pipe (15) is one of the research and development topics of this unit.

Contents of the invention

The object of the present invention is to disclose a method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln based on the existing deficiencies, by setting the cooling system into two sets, and obtaining the absorbent paper using two sets of cooling system water removal boxes alternately. Reduction of trace amounts of water.

In order to achieve the purpose of the present invention, this application discloses the following technical solutions:

A method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln. A hot air cooling pipe and multiple air nozzles are introduced into the upper part of the tin bath through the protective gas passage to form a cooling system. A single liquefied sulfur dioxide tank connects two cooling systems through pipelines. The protective gas passage or the two liquefied sulfur dioxide tanks are respectively connected to the protective gas passage of a cooling system, and a water removal box is provided on each protective gas passage pipe; the air inlet pipe provided at one end of the water removal box is connected to the protective gas passage. The incoming gas direction pipe is connected, and the exhaust pipe set at the other end of the water removal box is connected to the hot air cooling pipe direction pipe that protects the gas passage. An absorbent paper is provided in the water removal box cavity to isolate the air inlet pipe and the exhaust pipe. The absorbent paper keeps trace amounts of water in the sulfur dioxide in the water removal box; the water removal boxes connected to the two cooling systems are used alternately.

In the method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln, the water removal box has a rectangular structure. An air inlet pipe is provided in the middle of one end of the rectangular structure of the water removal box, and an air inlet pipe is provided in the middle of the other end of the rectangular structure of the water removal box. There is an exhaust pipe; one end of the fixed clamping plate is high and the other end is low. The four sides of the fixed clamping plate are fixedly connected to the four walls of the box cavity of the water removal box. The high end of the fixed clamping plate is fixed on the upper part of the pipe hole of the exhaust pipe. The fixed clamp The lower end of the holding plate is fixed at the lower part of the tube hole of the air inlet pipe. An array of mesh B is distributed in the middle of the fixed holding plate. Multiple sheets of absorbent paper are placed on the upper part of the fixed holding plate. The movable holding plate makes the The plurality of absorbent papers are clamped between the movable clamping plate and the fixed clamping plate. The movable clamping plate is provided with mesh A corresponding to the array of mesh B of the fixed clamping plate.

In the described method of removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln, an air inlet pipe with connecting threads is provided in the middle of one end of the rectangular structure water removal box, and an air inlet pipe with connecting threads is provided in the middle of the other end of the rectangular structure water removal box. exhaust pipe.

The described method of removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln consists of multiple screws passing through the perforations near the surroundings of the movable clamping plate in sequence, the absorbent paper surrounding the holes, and then connecting to the screw holes A of the fixed clamping plate near the surroundings.

In the described method of removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln, a step is provided around the inner wall of the upper mouth of the water removal box, a rubber gasket is placed on the step, and the cover plate is buckled on the upper part of the rubber gasket on the step. Pass the screw through the through hole of the cover plate and the light hole of the rubber gasket in order, and then connect to the screw hole B on the step.

In the method for removing trace amounts of water from sulfur dioxide protective gas in a glass annealing kiln, the absorbent paper is industrial dust-free absorbent paper.

Through the above disclosure, the beneficial effects of the present invention are:

The method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to the present invention changes the original single cooling system into two sets of cooling systems, and then uses tee pipes and pipes to connect to the liquefied sulfur dioxide tank, and on the other side of the tee pipe The two outlets are connected through pipelines respectively. Install valves and water removal boxes A and Drainage Box B on the two outlet pipelines respectively, and then use the pipelines to connect the hot air cooling pipes and multiple air nozzles of the two sets of cooling systems respectively, so that it is convenient. The trace water in the liquefied sulfur dioxide can be further removed by using the water removal box A or the water removal box B regularly. The absorbent paper in the water removal box A or the water removal box B can further remove the trace water in the liquefied sulfur dioxide. The removal improves the purity of sulfur dioxide, effectively reduces the adhesion and oxidation of tin, and ensures a uniform film layer.

Description of the drawings

Figure 1 is a schematic structural diagram of an existing glass melting furnace;

Figure 2 is a schematic structural diagram of the present invention;

Figure 3 is a schematic structural diagram of the water removal box of the present invention;

Figure 4 is a schematic diagram of the three-dimensional assembly structure of the water removal box of the present invention;

In the picture: 1. Glass; 2. Annealing kiln; 3. Support roller A; 4. Kiln bottom; 5. Support roller B; 6. Tin tank; 7. Tin liquid; 8. Connecting tank; 9. Melting furnace; 10. Molten glass; 11. Kiln roof; 12. Molten glass; 13. Flattening and polishing area; 14. Baffle; 15. Hot air cooling pipe; 16. Cold coating area; 17. Air nozzle; 18. Thinning area ; 19. Cooling area; 20. Protective gas passage; 21. Hot air cooling pipe A; 22. Hot air cooling pipe B; 23. Water removal box A; 24. Water removal box B; 25. Cover plate; 26. Screws; 27 , air intake pipe; 28. fixed clamping plate; 29. movable clamping plate; 30. absorbent paper; 31. mesh A; 32. mesh B; 33. exhaust pipe; 34. through hole; 35. rubber gasket ; 36. Optical hole; 37. Perforation; 38. Screw hole A; 39. Step; 40. Box cavity; 41. Screw hole B.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not the only limitation on the protection scope of the present invention, but are only used to explain one of the embodiments within the disclosed scope of the technical solution of the present invention.

Combined with the method of removing trace amounts of water from the sulfur dioxide protective gas of the glass annealing kiln as described in Figures 2 to 4, the hot air cooling pipe 15 and the plurality of air nozzles 17 leading into the upper part of the tin bath 6 through the protective gas passage 20 form a cooling system. A single liquefied sulfur dioxide tank is connected to the protective gas passages 20 of two sets of cooling systems through pipelines, or two liquefied sulfur dioxide tanks are respectively connected to the protective gas passages 20 of a cooling system, and a water removal box is provided on each protective gas passage 20 pipe; The air inlet pipe 27 provided at one end of the water removal box is connected to the air incoming direction pipe of the protective gas passage 20, and the exhaust pipe 33 provided at the other end of the water removal box is connected to the hot air cooling pipe 15 direction pipe of the protective gas passage 20. The water box cavity 40 is provided with an absorbent paper 30 that isolates the air inlet pipe 27 and the exhaust pipe 33. The absorbent paper 30 allows trace amounts of water in the sulfur dioxide to remain in the water removal box; the water removal boxes connecting the two sets of cooling systems alternate use.

With reference to Figure 2, 3 or 4, the water removal box has a rectangular structure. An air inlet pipe 27 with a connecting thread is provided in the middle of one end of the rectangular structure of the water removal box. The middle of the other end of the rectangular structure of the water removal box is provided with an air inlet pipe 27. The exhaust pipe 33 has a connecting thread; one end of the fixed clamping plate 28 is high and the other end is low. The four sides of the fixed clamping plate 28 are fixedly connected to the four walls of the box cavity 40 of the water removal box. The high end of the fixed clamping plate 28 is fixed on the exhaust pipe. The upper part of the tube hole of the tube 33, the lower end of the fixed clamping plate 28 is fixed on the lower part of the tube hole of the air inlet pipe 27, an array of mesh B32 is distributed in the middle of the fixed clamping plate 28, and a plurality of absorbent papers 30 are placed on On the upper part of the fixed clamping plate 28, the plurality of absorbent papers 30 are clamped between the movable clamping plate 29 and the fixed clamping plate 28 by the movable clamping plate 29. Corresponding fixed clips are provided on the movable clamping plate 29. The mesh A31 of the mesh B32 of the holding plate 28 is in an array, and a plurality of screws are passed through the perforations 37 of the movable clamping plate 29 near the surroundings in sequence, and the absorbent paper 30 is connected to the holes of the surroundings by the fixed clamping plate 28. Screw hole A38; a step 39 is provided around the inner wall of the upper mouth of the water removal box. A rubber washer 35 is placed on the step 39. The cover plate 25 is buckled on the upper part of the rubber washer 35 on the step 39, and a plurality of screws 26 pass through it in sequence. The through hole 34 of the cover plate 25 and the light hole 36 of the rubber gasket 35 are connected to the screw hole B41 on the step 39 .

To implement the method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to the present invention, with reference to Figures 2 to 4, the hot air cooling pipe 15 originally located at the upper part of the tin bath 6 is transformed into two hot air cooling pipes A21 and B22. root, and set and install air nozzles 17 at the bottom of hot air cooling pipe A21 and hot air cooling pipe B22 respectively; make two water removal boxes A23 and water removal boxes B24 of the same structure according to Figures 3 and 4, in which two fixed clamping plates 28 is fixed in the water removal box A23 and the water removal box B24 by welding; the absorbent paper 30 of the present application is an industrial dust-free absorbent paper. Before use, the perforations 37 of the movable clamping plate 29 and the screw holes of the fixed clamping plate 28 are used. Press out the corresponding hole at position A38.

With reference to the accompanying drawings 2 to 4, when the application is used, the raw materials are put into the melting furnace 9 through the feeding port in conjunction with the accompanying drawing 2. The raw materials in the melting furnace 9 are melted at high temperature to form molten glass 10, and the flowing molten glass in the upper part of the molten glass 10 is 12 flows into the surface of the tin liquid 7 of the tin bath 6 through the connection groove 8 and the baffle 14. The molten glass liquid 12 on the surface of the tin liquid 7 spreads and flattens on the surface of the tin liquid 7 under the action of gravity and surface tension, forming a The glass ribbons with flat surfaces and parallel to each other are then pulled toward the tail of the tin bath 6. At this time, the liquefied sulfur dioxide tank with the valve opened flows into the water removal box A23 through the protective gas passage 20 "pipeline" and the filtered trace water in the water removal box A23 is removed by the absorbent paper 30. , and then through the hot air cooling pipe 15 and the air nozzle 17, the glass ribbon is polished, thinned, hardened and cooled in the flat polishing area 13, cold coating area 16, thinning area 18 and cooling area 19 on the upper part of the tin bath 6, and then the After the glass ribbon is pulled out of the tin bath 6, it enters the annealing kiln 2 through the supporting roller B5 and onto the supporting roller A3 installed on the upper part of the kiln bottom 4, and then is annealed and cut to obtain the flat glass 1; if the customer's requirements are extremely strict, this application can be A sulfur dioxide purity online detection system is installed on the exhaust pipe 33 of the water box A23 and the water removal box B24 to control the purity to a higher level.

The preferred embodiments of the present invention have been described in detail above, but it should be understood that after reading the above teaching content of the present invention, those skilled in the art can make various changes or modifications within the protection scope of the present invention. These equivalent forms also fall within the scope defined by the appended claims of this application.

The parts not described in detail in the present invention are prior art.

Claims (6)

1. A method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln. The hot air cooling pipe (15) and multiple air nozzles (17) at the upper part of the tin bath (6) are passed through the protective gas passage (20) to form a set of cooling The system is characterized by: a single liquefied sulfur dioxide tank is connected to the protective gas passages (20) of two cooling systems through pipelines, or two liquefied sulfur dioxide tanks are respectively connected to the protective gas passages (20) of a cooling system. In each protective gas A water removal box is provided on the pipeline of the passage (20); the air inlet pipe (27) provided at one end of the water removal box is connected to the gas incoming direction pipe of the protective gas passage (20), and the exhaust pipe (27) provided at the other end of the water removal box 33) The hot air cooling pipe (15) of the protective gas passage (20) is connected to the direction pipe, and an absorbent paper (20) directly connected to the air inlet pipe (27) and the exhaust pipe (33) is provided in the water removal box cavity (40). 30), the trace water in the sulfur dioxide is left in the water removal box by the absorbent paper (30); the water removal boxes connected to the two sets of cooling systems are used alternately. 2. The method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to claim 1, characterized in that: the water removal box has a rectangular structure, and an air inlet pipe (27) is provided in the middle of one end of the rectangular structure water removal box. ), the other end of the rectangular structure water removal box is provided with an exhaust pipe (33) in the middle of the end face; the fixed clamping plate (28) has one end high and the other end low, and the fixed clamping plate (28) is surrounded by the box cavity (33) of the water removal box 40) The four walls are fixedly connected, the high end of the fixed clamping plate (28) is fixed on the upper part of the pipe hole of the exhaust pipe (33), and the lower end of the fixed clamping plate (28) is fixed on the lower part of the pipe hole of the intake pipe (27) , there is an array of mesh B (32) distributed in the middle of the fixed clamping plate (28), and multiple absorbent papers (30) are placed on the upper part of the fixed clamping plate (28), and the movable clamping plate (29) The plurality of absorbent papers (30) are clamped between the movable clamping plate (29) and the fixed clamping plate (28), and the movable clamping plate (29) is provided with a corresponding fixed clamping plate (28) Mesh A (31) of mesh B (32) in an array. 3. The method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to claim 1 or 2, characterized in that an air inlet pipe (27) with connecting threads is provided in the middle of one end of the rectangular structure water removal box, which is rectangular. An exhaust pipe (33) with connecting threads is provided in the middle of the end face of the other end of the structural water removal box. 4. The method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to claim 1 or 2, characterized in that multiple screws are passed through the movable clamping plate (29) in sequence through the surrounding perforations (37), water absorption After the paper (30) is close to the surrounding holes, connect the fixed clamping plate (28) close to the surrounding screw holes A (38). 5. The method for removing trace amounts of water from the sulfur dioxide protective gas of a glass annealing kiln according to claim 1, characterized in that steps (39) are provided around the inner wall of the upper mouth of the water removal box, and rubber is placed on the steps (39). The washer (35) and the cover plate (25) are buckled on the upper part of the rubber washer (35) on the step (39). A plurality of screws (26) pass through the through hole (34) of the cover plate (25) and the rubber washer (35) in sequence. The light hole (36) of 35) is connected to the screw hole B (41) on the step (39). 6. The method for removing trace amounts of water from sulfur dioxide protective gas in a glass annealing kiln according to claim 1, characterized in that the absorbent paper (30) is industrial dust-free absorbent paper.