Waste heat recovery device for cooling fused quartz
By combining the sliding steer module and the heat exchange module, the problems of waste heat recovery and uneven cooling during the cooling process of molten quartz are solved, achieving high efficiency and energy saving, as well as high temperature resistance of the equipment, and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGHAI HECHUANG SILICON MATERIAL CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-05
AI Technical Summary
Existing fused silica cooling processes suffer from energy waste, uneven cooling, short equipment lifespan, and insufficient process controllability. In particular, it is difficult to effectively recover waste heat and ensure uniform cooling in high-temperature environments.
The system employs a sliding trolley module and a heat exchange module, including a slide rail, sliding trolley, winch, silicon carbide heat pipe array, and corundum brick. It combines low-temperature inert gas cooling and heat pipe array for uniform cooling and waste heat recovery. The sliding trolley module facilitates the transport of quartz products, and the heat exchange module transfers heat to the evaporator through the heat pipe array.
It achieves uniform cooling of quartz products, extends equipment life, improves energy efficiency, reduces production costs, and simplifies operation procedures.
Smart Images
Figure CN224202209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat recovery technology in quartz processing, specifically a waste heat recovery device for cooling molten quartz. Background Technology
[0002] After being formed at high temperatures, fused silica requires precise cooling to avoid defects such as thermal stress cracks and crystallization (devitrification). Traditional cooling methods typically employ natural cooling or forced gas convection cooling, but these methods have the following problems:
[0003] (1) Energy waste: During the process of cooling molten quartz from above 1700°C to room temperature, a large amount of high-temperature waste heat (500~1200°C) is directly emitted into the environment and cannot be effectively recycled, resulting in high energy consumption and increased production costs.
[0004] (2) Poor cooling uniformity: Traditional cooling methods rely on radiation and gas convection, which may lead to inconsistent cooling rates in different parts of quartz products, generating thermal stress and affecting product quality.
[0005] (3) Insufficient process controllability: The existing cooling system is difficult to precisely adjust the cooling rate and cannot meet the cooling requirements of quartz products of different specifications (such as thick-walled products need to be cooled slowly, while thin-walled products can be cooled quickly).
[0006] (4) Short equipment life: Under high temperature environment, the inner wall material of the cooling chamber is susceptible to thermal shock and chemical corrosion (such as SiO2 vapor corrosion), which leads to the peeling of refractory materials and high maintenance costs.
[0007] Currently, some waste heat recovery technologies (such as heat exchangers and regenerative combustion systems) have been applied in the metallurgical and glass industries. However, there are still areas for improvement in the high-temperature waste heat recovery of molten silica cooling process. For example, ordinary metal heat exchangers cannot withstand extreme temperatures of >1000℃ for a long time, and the SiO2 vapor volatilized from molten silica is easily deposited on the heat exchange surface, reducing heat transfer efficiency. In addition, the equipment needs to ensure cooling uniformity while efficiently recovering waste heat and avoiding interference with the production process.
[0008] Therefore, there is an urgent need for a high-efficiency, high-temperature resistant, and precisely temperature-controlled waste heat recovery device for molten silica cooling to solve the above problems. Utility Model Content
[0009] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a waste heat recovery device for cooling molten quartz that is highly efficient, energy-saving, high-temperature resistant, and can recover waste heat while cooling and molding quartz products.
[0010] The technical problem to be solved by this utility model is achieved through the following technical solution: a waste heat recovery device for cooling fused silica, which includes a cooling chamber, a sliding trolley module and a heat exchange module.
[0011] The side wall of the cooling chamber has an opening, at which an industrial sliding door is installed for the sliding steer module to enter and exit. Cooling gas supply pipes are installed on the bottom wall of the cooling chamber, and several exhaust pipes are installed on the top wall of the cooling chamber.
[0012] The sliding steer module includes a slide rail, a sliding steer, and a winch. One end of the slide rail is placed on the bottom wall of the cooling chamber, and the other end extends outside the opening of the cooling chamber. The winch is installed on the slide rail outside the cooling chamber, and the sliding steer is placed on the slide rail.
[0013] The heat exchange module includes a heat pipe array and an evaporator placed outside the cooling chamber. One end of the heat pipe array is the evaporation section and the other end is the condensation section. The evaporation section of the heat pipe array is placed inside the cooling chamber and above the opening, while the condensation section of the heat pipe array is placed inside the bottom of the evaporator drum.
[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the waste heat recovery device for cooling molten quartz described above has corundum bricks fixedly installed on the inner wall of the vertical surface and the inner wall of the top surface of the cooling chamber.
[0015] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned waste heat recovery device for cooling molten quartz has a number of gas outlets on the cooling gas supply pipe, and the gas outlets are connected to the bottom of the cooling chamber at intervals.
[0016] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned waste heat recovery device for cooling molten quartz, wherein the cooling gas supply pipes are symmetrically arranged on both sides of the slide rail.
[0017] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the waste heat recovery device for cooling molten quartz described above, wherein the sliding trolley is fixedly provided with a hook on the side wall of the end facing the winch to facilitate the use of the winch.
[0018] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the waste heat recovery device for cooling fused silica described above, wherein the heat pipe array group comprises a number of silicon carbide heat pipes arranged horizontally and vertically at intervals.
[0019] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned waste heat recovery device for cooling molten quartz has several sets of rollers that can move linearly along the slide rail rotatably installed on the bottom surface of the sliding trolley.
[0020] Compared with the prior art, the beneficial technical effects of this utility model are:
[0021] (1) The heat pipe array of the heat exchange module, in conjunction with the evaporator, can effectively recover waste heat while cooling the molded quartz products, thereby improving energy utilization efficiency and achieving high efficiency and energy saving.
[0022] (2) Corundum bricks are fixedly installed on the inner wall of the vertical surface and the inner wall of the top surface of the cooling chamber, which enhances the high temperature resistance of the device, enables it to adapt to the high temperature environment during the cooling process of molten quartz, and extends the service life of the device.
[0023] (3) Several gas outlets are set on the cooling gas supply pipe and connected to the bottom of the cooling chamber at intervals. They are also symmetrically arranged on both sides of the slide rail, which can make the cooling gas more evenly distributed in the cooling chamber, ensuring uniform cooling of quartz products and improving cooling quality.
[0024] (4) The device adopts a sliding trolley module, including a slide rail, a sliding trolley and a winch, which makes it easy to send quartz products into and out of the cooling chamber. Through the cooperation of the winch and the hook on the sliding trolley, the operation is simple and convenient, and the work efficiency is improved.
[0025] (5) The heat pipe array consists of several silicon carbide heat pipes arranged horizontally and vertically. The silicon carbide heat pipes have good thermal conductivity and can quickly transfer the heat in the cooling chamber to the evaporator, further improving the waste heat recovery efficiency. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the main structure of this utility model before use;
[0027] Figure 2 This is a schematic diagram of the main structure of the present invention after use.
[0028] In the diagram: 1. Cooling chamber; 2. Opening; 3. Industrial sliding door; 4. Cooling gas supply pipe; 5. Exhaust pipe; 6. Gas outlet; 7. Corundum brick; 8. Slide rail; 9. Sliding trolley; 10. Winch; 11. Hook; 12. Roller; 13. Heat pipe array; 14. Evaporator; 15. Rail flatcar. Detailed Implementation
[0029] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.
[0030] Example 1, referring to Figure 1-2 A waste heat recovery device for cooling fused silica, comprising a cooling chamber 1, a sliding trolley module and a heat exchange module;
[0031] The side wall of the cooling chamber 1 has an opening 2, which is roughly square. An industrial sliding door 3 is installed at the opening 2 for the sliding trolley module to enter and exit. The industrial sliding door 3 is existing technology and its specifications can be selected according to the usage requirements. A cooling gas supply pipe 4 is installed on the bottom wall of the cooling chamber 1. The cooling gas supply pipe 4 can be a low-temperature inert gas, such as nitrogen or argon, to reduce the surface temperature of the quartz product after molding. Several exhaust pipes 5 are installed on the top wall of the cooling chamber 1. The cooling gas supply pipes 4 have several exhaust heads 6. The number of exhaust heads 6 can be selected according to the usage requirements. The exhaust heads 6 are connected to the bottom of the cooling chamber 1 at intervals. The cooling gas supply pipes 4 are symmetrically arranged on both sides of the slide rail to cool the molded quartz product on the slide rail.
[0032] Since heat tends to accumulate in the top of the cooling chamber 1, in order to improve the high temperature resistance of the top wall of the cooling chamber 1, corundum bricks 7 are fixed on the inner wall of the vertical surface and the inner wall of the top surface of the cooling chamber 1. The thickness of the corundum bricks can be selected according to the usage requirements, which enhances the high temperature resistance of the device and enables it to adapt to the high temperature environment during the cooling process of molten quartz.
[0033] The sliding steer module includes a slide rail 8, a sliding steer 9, and a winch 10. One end of the slide rail 8 is placed on the bottom wall of the cooling chamber 1, and the other end extends to the opening 2 of the cooling chamber 1. The winch 10 is installed on the end of the slide rail 8 outside the cooling chamber 1. The winch 10 can be an electric winch 10 with a steel cable wound on it. The sliding steer 9 is placed on the slide rail 8 and is formed into a roughly horizontal plate structure. Its top surface is used to support the shaped quartz products. A hook 11 is fixed on the side wall of the sliding steer 9 facing the winch 10 to facilitate the use of the winch 10. Several sets of rollers 12 that can move linearly along the slide rail 8 are rotatably installed on the bottom surface of the sliding steer 9. The model and specifications of the slide rail 8 and the rollers 12 can be selected according to the usage requirements.
[0034] It should be noted that the slide rail 8 consists of two parallel slide rails 8, with a certain gap between the closer ends of the two slide rails 8. This gap is used to accommodate the bottom edge of the industrial sliding door 3 when it is closed. Since the bottom of the sliding car 9 has multiple sets of rollers 12, whenever the roller 12 passes through this gap, the other sets of rollers 12 will not deviate horizontally from the track because they will continue to move along the slide rail 8.
[0035] Because molten quartz releases a large amount of heat after being molded into quartz products, a heat exchange module is added to absorb this heat. The heat exchange module includes a heat pipe array 13 and an evaporator 14 placed outside the cooling chamber 1. The heat pipes in the evaporator 14 and the heat pipe array 13 are existing technologies and can be selected according to usage requirements. One end of the heat pipe array 13 is an evaporation section and the other end is a condensation section. The evaporation section of the heat pipe array 13 is placed inside the cooling chamber 1 and above the opening 2. The condensation section of the heat pipe array 13 is placed inside the bottom of the boiler drum of the evaporator 14, thereby transferring heat to the water in the boiler drum of the evaporator 14 to form a heat exchange. The heat pipe array 13 consists of several silicon carbide heat pipes arranged horizontally and vertically at intervals. The cooperation between the heat pipe array 13 and the evaporator 14 of the heat exchange module can effectively recover waste heat while cooling the molded quartz products, improve energy utilization efficiency, and achieve high efficiency and energy saving.
[0036] The working principle of the waste heat recovery device for cooling fused silica in Example 1 is as follows:
[0037] When cooling of the fused quartz product after molding is required, the overhead crane first hoists the rail car 15 in the factory area onto the slide rail 8 of the sliding trolley 9 module. Then, the quartz product to be cooled is placed on the sliding trolley 9. At this time, the rail car 15 is driven to directly push the front sliding trolley 9, causing the sliding trolley 9 to move into the cooling chamber 1. Then, the industrial sliding door 3 is closed. Inside the cooling chamber 1, the cooling gas supply pipe 4 evenly supplies low-temperature inert gas, such as nitrogen or argon, to the bottom of the cooling chamber 1, which is then sprayed out through the gas outlet 6 to cool the quartz product. At the same time, the top wall of the cooling chamber 1 and the... The corundum bricks 7 on the inner wall of the facade can withstand high temperature environment and ensure the stability of the cooling chamber 1 structure. As cooling proceeds, the large amount of heat emitted by the quartz products causes the temperature inside the cooling chamber 1 to rise. Since the evaporation section of the heat pipe array group 13 is located inside the cooling chamber 1 and above the opening 2, it can fully absorb the high temperature heat inside the cooling chamber 1. The condensation section of the heat pipe array group 13 is located inside the bottom of the evaporator 14 outside the cooling chamber 1, so the heat absorbed by the evaporation section can be quickly transferred to the condensation section, so that the water in the evaporator 14 absorbs heat and forms heat exchange, thereby realizing waste heat recovery.
[0038] After cooling is complete, open the industrial sliding door 3, attach the end of the steel wire on the winch 10 to the hook 11 on the sliding trolley 9, start the winch 10, pull the sliding trolley 9 out of the cooling chamber 1, and take out the cooled quartz products. At the same time, the gas in the cooling chamber 1 is discharged through the exhaust pipe 5, completing the entire cooling and waste heat recovery process.
Claims
1. A waste heat recovery device for cooling fused silica, characterized in that: It includes a cooling chamber, a sliding steer module, and a heat exchange module; The side wall of the cooling chamber has an opening, at which an industrial sliding door is installed for the sliding steer module to enter and exit. Cooling gas supply pipes are installed on the bottom wall of the cooling chamber, and several exhaust pipes are installed on the top wall of the cooling chamber. The sliding steer module includes a slide rail, a sliding steer, and a winch. One end of the slide rail is placed on the bottom wall of the cooling chamber, and the other end extends outside the opening of the cooling chamber. The winch is installed on the slide rail outside the cooling chamber, and the sliding steer is placed on the slide rail. The heat exchange module includes a heat pipe array and an evaporator placed outside the cooling chamber. One end of the heat pipe array is the evaporation section and the other end is the condensation section. The evaporation section of the heat pipe array is placed inside the cooling chamber and above the opening, while the condensation section of the heat pipe array is placed inside the bottom of the evaporator drum.
2. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: Corundum bricks are fixedly installed on the inner walls of the vertical facade and the inner wall of the top facade of the cooling chamber.
3. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: The cooling gas supply pipe has several gas outlets, which are connected to the bottom of the cooling chamber at intervals.
4. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: The cooling gas supply pipes are symmetrically arranged on both sides of the slide rail.
5. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: The sliding trolley is fixed with a hook on the side wall facing the winch to facilitate its use with the winch.
6. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: The heat pipe array consists of several silicon carbide heat pipes arranged laterally and longitudinally at intervals.
7. The waste heat recovery device for cooling fused silica according to claim 1, characterized in that: Several sets of rollers that can move linearly along the slide rails are rotatably mounted on the bottom surface of the sliding steer.