Glass kiln and use method thereof

Abstract

The invention discloses a glass kiln and a using method thereof, and relates to the technical field of glass kilns, the glass kiln comprises a furnace body, molten pools are arranged in the furnace body side by side, a partition pool wall is arranged between every two adjacent molten pools, a heat storage chamber is arranged on the side face of the molten pool on the outermost side, and the heat storage chamber is communicated with the molten pools through a small furnace. When the glass furnace is used, raw materials with different colors are put into the molten pools in the furnace body, the small furnace works to convey fuel and combustion-supporting air in the heat storage chamber to the upper parts of the molten pools for combustion work, so that glass is melted, the transverse flame melting furnace periodically performs reversing combustion, and the temperatures of the upper sides of the two molten pools are adjusted; therefore, the glass in the two molten pools is accurately heated and molten, stable melting work of the glass with different colors is guaranteed, and the fixed asset investment cost and the operation cost of a unit product are remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of glass furnace technology, and in particular to a glass furnace and its method of use. Background Technology

[0002] Traditional single-melting-zone furnaces have only one melting pool and can only produce glass products of the same color at a time. If different colors need to be produced, a color-changing operation is required. This process generates a large number of defective products with transitional colors, resulting in wasted production. If two different colors of glass are desired, two separate furnaces need to be built, leading to high fixed asset investment and operating costs per unit of product.

[0003] For example, announcement number CN212741122U discloses a glass furnace, including a furnace body. The furnace body includes a molten pool and a feeding section. The feeding section is located at the feeding end of the molten pool and is connected to the molten pool. Let the length of the molten pool be L1 and the width of the molten pool be W1, then the value of L1 / W1 ranges from 1.8 to 2.2. Let the length of the feeding section be L2, then the value of L2 / W1 ranges from 0.34 to 0.4. Let the width of the feeding port of the feeding section be W2, then the value of W2 / L2 ranges from 0.47 to 0.56. The glass furnace disclosed above can only melt glass of one type, resulting in poor practicality. Summary of the Invention

[0004] The purpose of this invention is to provide a more practical glass furnace. This invention, by setting up different molten pools within the furnace body and periodically switching the combustion direction of regenerators and small furnaces located on both sides of the furnace body, adjusts the temperature on the upper side of the two molten pools, precisely heating and melting the glass in both pools. This ensures stable melting of glass of different colors, thus improving practicality.

[0005] To achieve the above objectives, the technical solution adopted by the present invention to solve its technical problem is: a glass furnace, including a furnace body, wherein molten pools are arranged side by side in the furnace body, and a partition wall is provided between adjacent molten pools, and a heat storage chamber is provided on the side of the outermost molten pool, wherein the heat storage chamber is connected to the molten pool through a small furnace.

[0006] Each of the molten pools is provided with a neck at one end, and a cooling section is provided at the end of the neck away from the molten pool.

[0007] The inner wall at the connection between the cooling section and the neck is sloped.

[0008] Each of the heat storage chambers is provided with a grid body at the bottom, and the furnace body is provided with a main flue. The main flue is connected to the waste heat boiler and is connected to the grid body through a branch flue.

[0009] An air exchanger is installed inside the branch flue.

[0010] Bubbles are formed on the bottom wall of the molten pool.

[0011] The partition wall is a hollow, coolable wall brick, and the bottom of the partition wall is embedded in the bottom brick of the molten pool.

[0012] The flame length of the kiln is greater than 2 / 3 of the total width of the molten pool.

[0013] A method of using a glass furnace as described above includes the following steps: Step 1: Add different raw materials to different molten pools in the furnace; Step 2: The small furnace on one side of the furnace body operates by inputting the fuel and combustion air from the regenerator into the molten pool for combustion, thereby melting the raw materials in the molten pool; Step 3: Periodic reversing combustion within the furnace; Step 4: After the fuel and combustion air are mixed in the small furnace on one side, they are introduced into the molten pool for combustion, and the high-temperature flue gas enters the regenerator on the opposite side from the small furnace on the opposite side. Step 5: The flue gas flows downward through the grid at the lower end of the regenerator, where it exchanges heat with the grid. The high-temperature flue gas heats the grid, causing its temperature to drop, and then enters the main flue through the branch flue. The flue gas from each small furnace merges into the main flue and enters the waste heat boiler through the main flue. Step 6: After reversing, the ambient temperature combustion air enters the branch flue from the air exchanger and passes upward through the high temperature grid body, where it is heated to the temperature required by the process. Step 7: Bubbling process - Inert gas is injected into the high-temperature molten glass to stabilize the bubble boundary; Step 8: The molten glass solutions of different types pass through different chucks and cooling sections and enter two branch lines to finally complete the production of different types of glass; Step 9: Adjust the pulling speed and pulling amount of the branch glass to adjust the position of the bubble boundary, thereby achieving a reasonable glass melting process for different molten pools.

[0014] The small furnaces on both sides of the furnace body switch directions every 20-30 minutes.

[0015] The beneficial effects of this invention are: When using a glass furnace, raw materials of different colors are fed into the molten pools within the furnace body. The small furnace operates by transporting fuel and combustion air from the regenerator to the upper part of the molten pools for combustion, thereby melting the glass. The horizontal flame furnace periodically reverses the combustion direction, adjusting the temperature of the upper sides of the two molten pools to precisely heat and melt the glass in both pools. This ensures stable melting of glass of different colors and significantly reduces the fixed asset investment cost and operating cost per unit product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the glass furnace structure of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of another embodiment of a glass furnace.

[0018] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of a glass furnace.

[0019] In the attached diagram: 1-partitioned pool wall, 2-molten pool, 3-choke, 4-cooling section, 5-grid body, 6-air exchanger, 7-bubbling, 8-regenerator, 9-small furnace, 10-furnace body, 11-branch flue, 12-main flue. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0022] like Figure 1 As shown, the glass furnace includes a furnace body 10, with molten pools 2 arranged side by side inside the furnace body 10. A partition wall 1 is provided between adjacent molten pools 2. A regenerator 8 is provided on the side of the outermost molten pool 2. The regenerator 8 is connected to the molten pool 2 through a small furnace 9. Specifically, the number of molten pools 2 is selected according to actual needs. In this embodiment, there are two molten pools 2, which produce two different colors of glass respectively. Two regenerators 8 are symmetrically arranged on both sides of the furnace body 10. Each regenerator 8 is connected to the furnace body 10 through eight small furnaces 9. The number of small furnaces 9 can be increased or decreased according to the production capacity.

[0023] When the glass furnace is in use, raw materials of different colors are put into the molten pool 2 in the furnace body 10. The small furnace 9 works to transport the fuel and combustion air in the regenerator 8 to the upper part of the molten pool 2 for combustion, thereby melting the glass. The horizontal flame furnace periodically changes the combustion direction to adjust the temperature of the upper side of the two molten pools 2, thereby precisely heating and melting the glass in the two molten pools 2, thus ensuring the stable melting of glass of different colors, and significantly reducing the fixed asset investment cost and operating cost per unit product.

[0024] Each molten pool 2 has a neck 3 at one end, and a cooling section 4 is located at the end of the neck 3 furthest from the molten pool 2. The molten glass solution passes through the completely separated neck 3 and cooling section 4 and enters two branch lines, ultimately completing the production of two different colored glass varieties. With increased production capacity, the glass can be further divided into two branch lines at the position of the neck 3, such as... Figure 2 From the neck 3, two branch lines, neck 3-1 and 3-2, and cooling sections 4-1 and 4-2, are further branched off, increasing the number of branch production lines to three or four. This allows for the simultaneous production of different thickness specifications.

[0025] The inner wall of the connection between the cooling section 4 and the neck 3 is inclined, which facilitates the stable flow of molten glass from the neck 3 into the cooling section 4, prevents the molten glass from getting blocked during flow, causing the glass solution to lose temperature, and thus ensures the outflow of the glass solution and the quality of the finished glass product.

[0026] Each regenerator chamber 8 has a grid body 5 at its bottom. The furnace body 10 has a main flue 12, which is connected to the waste heat boiler. The main flue 12 is connected to the grid body 5 through a branch flue 11. The grid body 5 absorbs the heat from the high-temperature flue gas flowing in the branch flue 12. The absorbed heat heats the combustion air entering the furnace body 10, thereby increasing the thermal efficiency of the fuel. Specifically, the grid body 5 is a huge "honeycomb" or "chessboard" structure made of a large number of refractory bricks (special grid bricks) stacked in an orderly manner.

[0027] An air exchanger 6 is installed in the branch flue 11. When the air exchanger 6 is working, it delivers ambient temperature combustion air to the branch flue 11, so that after the combustion is reversed in the furnace body 10, there is sufficient combustion air in the furnace body 10, thereby ensuring the stable melting of glass in the furnace body 10. Specifically, the air exchanger 6 is a gate-type air-flue gas exchange device.

[0028] Bubbling 7 is provided on the bottom wall of the molten pool 2. When the bubble 7 is working, it injects gas into the bottom of the molten glass in the molten pool to achieve stirring, homogenization, promote clarification and stabilize the liquid flow. Specifically, the bubble 7 is connected to a nitrogen cylinder. Nitrogen, as an inert gas, stirs the molten glass in the molten pool 2, thereby achieving homogenization of the molten glass. This helps to stabilize and strengthen the bubble boundary, ensuring that only fully melted and well-clarified molten glass can enter the cooling section, thus significantly improving the glass quality.

[0029] The partition wall 1 is a hollow, coolable wall brick. The bottom of the partition wall 1 is embedded in the bottom brick of the molten pool 2, thereby ensuring the stable melting of different glasses in the two molten pools 2. Specifically, the coolable wall in the partition wall 1 is cooled by air cooling or water cooling.

[0030] The flame length of the furnace is greater than 2 / 3 of the total width of the molten pool 2, thereby ensuring that the flame burning in the furnace body 10 can stably burn the glass in the molten pool 2.

[0031] A method of using a glass furnace as described above includes the following steps: Step 1: Add different raw materials to different molten pools 2 in the furnace body 10; Step 2: The small furnace 9 on one side of the furnace body 10 operates to input the fuel and combustion air in the regenerator 8 into the molten pool 2 for combustion, thereby melting the raw materials in the molten pool 2; Step 3: Periodic reversing combustion within the furnace body 10; Step 4: After the fuel and combustion air are mixed in the small furnace 9 on one side, they are introduced into the molten pool 2 for combustion, and the high-temperature flue gas enters the regenerator 8 on the opposite side from the small furnace 9 on the other side. Step 5: The flue gas flows downward through the grid 5 at the lower end of the regenerator 8. The flue gas exchanges heat with the grid 5. After the high-temperature flue gas heats the grid 5, its temperature decreases and it enters the main flue 12 through the branch flue 11. The flue gas from each small furnace 9 merges into the main flue 12 and enters the waste heat boiler through the main flue 12. Step 6: After the reversal, the ambient temperature combustion air enters the branch flue 11 from the air exchanger and passes upward through the high temperature grid 5, where the combustion air is heated to the temperature required by the process. Step 7: Bubbling 7 involves injecting inert gas into the high-temperature molten glass to stabilize the bubble boundary. Step 8: The molten glass solutions of different types pass through different chucks 3 and cooling sections 4 and enter two branch lines to finally complete the production of different types of glass; Step 9: Adjust the pulling speed and pulling amount of the branch glass to adjust the position of the bubble boundary, thereby achieving a reasonable glass melting process for different molten pools.

[0032] Specifically, the small furnaces 9 on both sides of the furnace body 10 are reversed every 20-30 minutes, as in this embodiment.

[0033] In summary, during operation, the two raw materials are fed into the two molten pools 2 within the furnace body 10. The smaller furnace 9 transports the fuel and combustion air from the regenerator 8 to the upper part of the molten pool 2 for combustion, thereby melting the glass. The horizontal flame furnace periodically reverses its combustion direction. The fuel and combustion air are mixed in one side of the smaller furnace 9 and then introduced into the molten pool 2 for combustion. High-temperature flue gas enters the opposite regenerator 8 from the opposite smaller furnace 9. The flue gas flows downwards through the grid 5 at the lower end of the regenerator 8, where it exchanges heat with the grid 5, heating the grid 5. After the temperature decreases, the gas enters the main flue 12 through the branch flue 11. The flue gas from each small furnace 9 merges into the main flue 12 and enters the waste heat boiler through the main flue 12. By adjusting the bubbling 7 to blow inert gas into the molten pool 2, and by adjusting the different drawing speeds and drawing amounts of the branch glass, the position of the bubble boundary is adjusted. This enables precise heating and melting of glass in different molten pools 2 within the same furnace body 10, thereby ensuring stable melting of different colored glass and significantly reducing the fixed asset investment cost and operating cost per unit product.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glass furnace, characterized in that, The furnace includes a furnace body (10), in which molten pools (2) are arranged side by side, and a partition wall (1) is provided between adjacent molten pools (2). A heat storage chamber (8) is provided on the side of the outermost molten pool (2), and the heat storage chamber (8) is connected to the molten pool (2) through a small furnace (9).

2. The glass furnace according to claim 1, characterized in that, Each of the molten pools (2) is provided with a neck (3) at one end, and a cooling section (4) is provided at the end of the neck (3) away from the molten pool (2).

3. The glass furnace according to claim 2, characterized in that, The inner wall of the connection between the cooling section (4) and the neck (3) is inclined.

4. The glass furnace according to claim 1, characterized in that, Each of the heat storage chambers (8) has a grid body (5) at the bottom, and the furnace body (10) has a main flue (12) inside. The main flue (12) is connected to the waste heat boiler, and the main flue (12) is connected to the grid body (5) through a branch flue (11).

5. The glass furnace according to claim 4, characterized in that, An air exchanger (6) is installed inside the branch flue (11).

6. The glass furnace according to claim 1, characterized in that, Bubbles (7) are provided on the bottom wall of the molten pool (2).

7. The glass furnace according to claim 1, characterized in that, The partition wall (1) is a hollow, coolable wall brick, and the bottom of the partition wall (1) is embedded in the bottom brick of the molten pool (2).

8. The glass furnace according to claim 1, characterized in that, The flame length of the kiln is greater than 2 / 3 of the total width of the molten pool (2).

9. A method of using a glass furnace as described in any one of claims 1-8, characterized in that, The specific steps include: Step 1: Add different raw materials to different molten pools (2) in the furnace body (10); Step 2: The small furnace (9) on one side of the furnace body (10) operates to input the fuel and combustion air in the regenerator (8) into the molten pool (2) for combustion, thereby melting the raw materials in the molten pool (2); Step 3: Periodic reversing combustion within the furnace body (10); Step 4: After the fuel and combustion air are mixed in the small furnace (9) on one side, they are introduced into the molten pool (2) for combustion, and the high-temperature flue gas enters the regenerator (8) on the opposite side from the small furnace (9). Step 5: The flue gas flows downward through the grid (5) at the lower end of the heat storage chamber (8). The flue gas exchanges heat with the grid (5). After the high-temperature flue gas heats the grid (5), the temperature decreases and it enters the main flue (12) through the branch flue (11). The flue gas from each small furnace (9) merges into the main flue (12) and enters the waste heat boiler through the main flue (12). Step 6: After the reversal, the ambient temperature combustion air enters the branch flue (11) from the air exchanger and passes upward through the high temperature grid (5), where the combustion air is heated to the temperature required by the process. Step 7, Bubbling (7) Injecting inert gas into the high-temperature glass melt to stabilize the bubble boundary; Step 8: The molten glass solutions of different types pass through different chucks (3) and cooling sections (4) and enter two branch lines to finally complete the production of different types of glass; Step 9: Adjust the pulling speed and pulling amount of the branch glass to adjust the position of the bubble boundary, thereby achieving a reasonable glass melting process for different molten pools.

10. The method of using the glass furnace according to claim 9, characterized in that, The small furnaces (9) on both sides of the furnace body (10) are reversed every 20-30 minutes.

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