Waste gas recovery system of germanium dioxide reduction furnace

Abstract

The utility model relates to the technical field of waste gas recovery, and discloses a waste gas recovery system of a germanium dioxide reduction furnace, which comprises a waste gas treatment mechanism and a separation recovery mechanism, and the waste gas treatment mechanism comprises a first container tank and a second container tank. The waste gas treatment mechanism is composed of a first container tank and a second container tank, waste gas can sequentially pass through the two container tanks to be treated, targeted reactions can be conducted according to different components in the waste gas in the stage treatment mode, and the waste gas treatment effect is effectively improved. Sealing rings are arranged at the top and the bottom of the polymeric membrane, and slots matched with the sealing rings are formed in the upper mounting plate and the lower mounting plate, so that the polymeric membrane is stably mounted, meanwhile, the sealing rings can effectively prevent waste gas from leaking from mounting gaps, and an operator can conveniently and quickly open or close the fastening cover through the rotating plate; and parts in the tank can be conveniently mounted, maintained and replaced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas recovery technology, specifically to a waste gas recovery system for a germanium dioxide reduction furnace. Background Technology

[0002] In the production of germanium dioxide, the reduction furnace generates a large amount of waste gas. If this waste gas is directly discharged, it will not only cause serious environmental pollution, but may also waste any valuable components that may be present, such as hydrogen, which can be recycled and reused. Therefore, the effective treatment and recycling of waste gas from germanium dioxide reduction furnaces has become an urgent problem to be solved. At present, there is a lack of a system on the market that is specifically designed for the waste gas from germanium dioxide reduction furnaces and can efficiently and comprehensively treat and recycle it. Some existing treatment methods may have problems such as incomplete treatment and low recycling efficiency, and cannot meet the requirements of fully recovering the components in the waste gas and environmentally friendly emissions.

[0003] Meanwhile, the design of the waste gas recovery system needs to consider multiple stages in the waste gas treatment process, such as waste gas transportation, treatment, and separation and recovery of target components. Existing similar systems may have shortcomings in structural design and functional implementation. For example, in the process of hydrogen recovery, the installation, sealing, and replacement of key polymer membranes are not convenient and reliable enough, which greatly affects the recovery of hydrogen. To address these issues, we propose a waste gas recovery system for a germanium dioxide reduction furnace. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a waste gas recovery system for germanium dioxide reduction furnace to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a waste gas recovery system for a germanium dioxide reduction furnace, comprising a waste gas treatment mechanism and a separation and recovery mechanism. The waste gas treatment mechanism includes a first container tank and a second container tank. A first connecting pipe is installed on the upper part of the first container tank, and the other end of the first connecting pipe passes through the upper right side of the second container tank and extends to the lower part inside the second container tank. The separation and recovery mechanism includes a separation and recovery tank. An installation seat is fixedly installed on the bottom inner wall of the separation and recovery tank. An installation groove is opened on the top of the installation seat, and a lower installation plate is provided in the installation groove opened on the top of the installation seat. A fastening cover is provided on the upper part of the separation and recovery tank, and a movable plate is provided inside the fastening cover. An upper installation plate is rotatably connected to the bottom surface of the movable plate, and a polymer membrane is provided between the upper installation plate and the lower installation plate.

[0006] As a preferred embodiment of this utility model, the upper part of the inner ring of the separation and recycling tank is provided with a threaded groove, the outer ring of the fastening cover is provided with a thread that matches the threaded groove on the upper part of the inner ring of the separation and recycling tank, and a rotating plate is fixedly installed on the top surface of the fastening cover.

[0007] As a preferred embodiment of this utility model, a groove is provided on the bottom surface of the fastening cover, and a spring is fixedly installed on the side of the top inner wall of the groove that is close to the top surface of the movable plate.

[0008] As a preferred embodiment of this utility model, the top and bottom of the polymer membrane are provided with sealing rings, and the upper and lower mounting plates are provided with slots that match the sealing rings on their respective sides. Three mounting rods that penetrate the lower mounting plate are evenly installed on the bottom surface of the upper mounting plate. The lower part of the mounting rod is provided with threads, and the outer rings on both sides where the mounting rod penetrates the lower mounting plate are provided with matching nuts for fixation.

[0009] As a preferred embodiment of this utility model, the top of the separation and recycling tank is fitted with a top cover via a snap fastener, and a sealing gasket is provided between the top cover and the separation and recycling tank. An exhaust pipe is installed in the middle of the left side of the separation and recycling tank.

[0010] As a preferred embodiment of the present invention, a second connecting pipe is installed on the top of the second container tank, and the other end of the second connecting pipe passes through the bottom of the separation and recovery tank and through the mounting base. An air pump is installed on the second connecting pipe.

[0011] As a preferred technical solution of this utility model, a vent pipe is installed on the upper right side of the first container tank, which penetrates and extends to the lower part of the first container tank. Both the first container tank and the second container tank are equipped with liquid filling pipes on the upper part of the front side in an inclined manner, and the liquid filling pipes are provided with sealing caps.

[0012] As a preferred embodiment of this utility model, both the first container and the second container can be made of glass. The bottom of the first container and the second container is equipped with a drain pipe and a solenoid valve. The bottom of the first container and the second container is equipped with multiple support legs.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The waste gas recovery system of the germanium dioxide reduction furnace consists of a first container tank and a second container tank. The two container tanks are connected by a first connecting pipe, so that the waste gas can be processed by passing through the two container tanks in sequence. This staged treatment method can target different components in the waste gas for specific reactions, effectively improve the waste gas treatment effect, and ensure that harmful substances in the waste gas are fully removed or transformed.

[0015] 2. The waste gas recovery system of this germanium dioxide reduction furnace uses a separation and recovery tank connected to the tank body by a fastening cover and a rotating plate on the top of the fastening cover. This ensures the airtightness of the tank body, preventing waste gas leakage and environmental pollution. The tank is also clamped and fixed by upper and lower mounting plates. Sealing rings are installed at the top and bottom of the polymer membrane, and slots matching the sealing rings are opened on the upper and lower mounting plates. This design makes the polymer membrane securely installed, and the sealing rings effectively prevent waste gas from leaking from the installation gaps, ensuring the smooth progress of the separation and recovery process. It also allows operators to quickly open or close the fastening cover by rotating the plate, facilitating the installation, maintenance, and replacement of the internal components of the tank. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the separation and recovery tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the polymer membrane installation structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the polymer membrane structure of this utility model.

[0020] In the diagram: 1. First container tank; 2. Second container tank; 3. Separation and recovery tank; 301. Exhaust pipe; 302. Top cover; 303. Sealing gasket; 304. Rotating plate; 305. Polymer membrane; 306. Lower mounting plate; 307. Mounting rod; 308. Fastening cover; 309. Spring; 310. Upper mounting plate; 311. Movable plate; 312. Sealing ring; 313. Mounting base; 4. Drain pipe; 5. Support leg; 6. Liquid filling pipe; 7. Vent pipe; 8. First connecting pipe; 9. Second connecting pipe; 10. Vacuum pump. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figures 1-4 The waste gas recovery system for the germanium dioxide reduction furnace comprises a waste gas treatment mechanism and a separation and recovery mechanism. The waste gas treatment mechanism includes a first container tank 1 and a second container tank 2, both made of glass for easy observation of their internal components. The first container tank 1 can hold solutions such as sodium hydroxide, and the second container tank 2 can hold solutions such as concentrated sulfuric acid. This system treats the waste gas emitted from the germanium dioxide reduction furnace. A vent pipe 7 is installed on the upper right side of the first container tank 1, extending through and into the lower part of the first container tank 1 to introduce the waste gas generated by the germanium dioxide reduction furnace into the first container tank 1. Both the first and second container tanks have inclined liquid addition pipes 6 installed on their upper sides, with sealing caps on the pipes. Liquid addition pipes 6 allow the treated waste gas to be added to both the first and second container tanks. The required liquids, such as sodium hydroxide solution and concentrated sulfuric acid, are handled by a first connecting pipe 8 installed on the upper part of the first container tank 1. The other end of the first connecting pipe 8 passes through the upper right side of the second container tank 2 and extends to the lower part of the second container tank 2, allowing the waste gas to enter the second container tank 2 for further treatment after being treated in the first container tank 1 through the first connecting pipe 8. A drain pipe 4 is installed at the bottom of the first container tank 1 and the second container tank 2. A solenoid valve is installed on the drain pipe 4. When the liquid in the container tank reaches a certain level of use or needs to be replaced, the liquid can be discharged by controlling the drain pipe 4 through the solenoid valve. The solenoid valve for the concentrated sulfuric acid container can be a fluoropolymer-lined solenoid valve, and the solenoid valve for the sodium hydroxide container can be a heat-insulated discharge valve. Multiple support legs 5 are also installed at the bottom of the first container tank 1 and the second container tank 2 to support the entire waste gas treatment mechanism.

[0023] The separation and recycling mechanism includes a separation and recycling tank 3. A mounting base 313 is fixedly installed on the inner bottom wall of the separation and recycling tank 3. A mounting groove is formed on the top of the mounting base 313, and a lower mounting plate 306 is installed within the mounting groove. A fastening cover 308 is provided on the upper part of the separation and recycling tank 3. A movable plate 311 is installed inside the fastening cover 308. An upper mounting plate 310 is rotatably connected to the bottom surface of the movable plate 311. A polymer membrane 305 is provided between the upper mounting plate 310 and the lower mounting plate 306. Sealing rings 312 are provided at both the top and bottom of the polymer membrane 305. Sealing rings 312 are provided on the sides of the upper mounting plate 310 and the lower mounting plate 306 that are close to each other. 2. Matching slots, through the cooperation of sealing ring 312 and slots, ensure the sealing of the installation location of polymer membrane 305. Three mounting rods 307 penetrating the lower mounting plate 306 are evenly installed on the bottom surface of the upper mounting plate 310. The lower part of the mounting rod 307 is provided with threads, and the outer rings on both sides where the mounting rod 307 penetrates the lower mounting plate 306 are provided with matching nuts for fixation. This ensures that the upper mounting plate 310 and the lower mounting plate 306 clamp and fix the polymer membrane 305, and facilitates the subsequent replacement of the polymer membrane 305. The upper part of the inner ring of the separation and recovery tank 3 is provided with a threaded groove, and the outer ring of the fastening cover 308 is provided with... The separation and recovery tank 3 has threads that match the upper threaded groove of the inner ring. A rotating plate 304 is fixedly installed on the top surface of the fastening cover 308. The fastening cover 308 can be easily tightened or loosened by rotating the plate 304, which facilitates the installation and removal of the polymer membrane 305. A groove is provided on the bottom surface of the fastening cover 308. A spring 309 is fixedly installed on the side of the top inner wall of the groove that is close to the top surface of the movable plate 311. The spring 309 provides a certain elastic force so that the upper mounting plate 310 can better press the polymer membrane 305. The top of the separation and recovery tank 3 is fitted with a top cover 302 by a snap fastener, and the top cover 302 is connected to the separation and recovery tank 3. A sealing gasket 303 is provided between the separation and recovery tank 3 to further ensure the sealing of the separation and recovery tank 3. An exhaust pipe 301 is installed in the middle of the left side of the separation and recovery tank 3. The gas after separation and recovery by the polymer membrane 305 can be discharged through the exhaust pipe 301 and collected, thus achieving the purpose of recovering the waste gas from the germanium dioxide reduction furnace. A second connecting pipe 9 is installed on the top of the second container tank 2. The other end of the second connecting pipe 9 passes through the bottom of the separation and recovery tank 3 and through the mounting base 313. An air pump 10 is installed on the second connecting pipe 9. The air pump 10 can draw the treated waste gas in the second container tank 2 into the separation and recovery tank 3 for separation and recovery.

[0024] In actual use, the exhaust gas first enters the first container tank 1 through the vent pipe 7, where it undergoes a preliminary reaction with the sodium hydroxide solution in the first container tank 1. Then, it enters the second container tank 2 through the first connecting pipe 8, where it undergoes further treatment with the concentrated sulfuric acid in the second container tank 2 to remove moisture from the exhaust gas. The treated exhaust gas, under the action of the suction pump 10, enters the separation and recovery tank 3 through the second connecting pipe 9. After separation and recovery by the polymer membrane 305, the valuable hydrogen component is separated and discharged through the exhaust pipe 301. At this time, the discharged hydrogen can be recovered. When the polymer membrane 305 needs to be replaced after use, the fastening cover 308 can be unscrewed by rotating the plate 304, the nut on the mounting rod 307 can be loosened, the lower mounting plate 306 can be removed, a new polymer membrane 305 can be replaced, and then it can be reinstalled.

[0025] Example 2: Please refer to Figures 1-4 The waste gas recovery system of the germanium dioxide reduction furnace in this embodiment is similar to that in embodiment one in terms of overall structure, but some details have been optimized. Similarly, the waste gas treatment mechanism consists of a first container tank 1 and a second container tank 2 made of glass. The first container tank 1 receives waste gas through the vent pipe 7. The first container tank 1 and the second container tank 2 add treatment liquid through the liquid addition pipe 6. The first connecting pipe 8 connects the two container tanks to realize continuous treatment of waste gas. The setting of the drain pipe 4 and the solenoid valve facilitates liquid discharge. The support leg 5 provides stable support.

[0026] In the separation and recovery mechanism, the mounting structure of the separation and recovery tank 3, including the mounting base 313, lower mounting plate 306, fastening cover 308, movable plate 311, upper mounting plate 310, and polymer membrane 305, is the same as in Embodiment 1. The difference is that in this embodiment, the threaded connection between the fastening cover 308 and the separation and recovery tank 3 uses a finer thread design, increasing the tightness and sealing of the connection and reducing the possibility of exhaust gas leakage. Simultaneously, the elastic coefficient of the spring 309 has been optimized to ensure that the upper mounting plate 310 presses the polymer membrane 305 firmly. Meanwhile, the high elasticity will not damage the polymer membrane 305, and the two nuts at the bottom of the mounting rod 307 can also provide some protection for the polymer membrane 305. The sealing gasket 303 between the top cover 302 and the separation and recovery tank 3 uses a new type of sealing material, which has better corrosion resistance and sealing performance, and extends the service life of the sealing gasket 303. The air pump 10 on the second connecting pipe 9 is a more stable model, which can more accurately control the air pumping volume, so that the waste gas can stably enter the separation and recovery tank 3 for treatment.

[0027] In actual operation, the waste gas treatment process is the same as in Example 1. However, the system in this example has been optimized in terms of sealing and stability, which can treat waste gas more efficiently, reduce the impact of waste gas leakage on the environment, and improve the service life and separation and recovery effect of the polymer membrane 305.

[0028] Example 3: Please refer to Figures 1-4 Based on Embodiment 1 and Embodiment 2, the waste gas recovery system of the germanium dioxide reduction furnace in this embodiment further adds intelligent control function. The structure and function of the first container tank 1 and the second container tank 2 of the waste gas treatment mechanism are the same as those of the previous two embodiments. The waste gas is received, treated and the liquid is discharged through components such as the vent pipe 7, the liquid adding pipe 6, the first connecting pipe 8, the liquid draining pipe 4 and the support leg 5.

[0029] In the separation and recovery mechanism, the installation structure of each component of the separation and recovery tank 3 is the same as in the previous two embodiments, but the control has been improved. Pressure sensors and gas concentration sensors are installed in the separation and recovery tank 3. The pressure sensor is used to monitor the pressure in the separation and recovery tank 3 in real time, and the gas concentration sensor is used to monitor the gas concentration after separation and recovery by the polymer membrane 305. These sensors transmit the monitored data to an external controller. The controller controls the speed of the vacuum pump 10 and the opening and closing of the solenoid valve according to preset parameters. For example, when the pressure in the separation and recovery tank 3 is too high, the controller will reduce the speed of the vacuum pump 10 to reduce the amount of waste gas entering, so as to ensure the safe operation of the system. After the hydrogen is separated, the valve at the exhaust pipe 301 is opened to discharge the hydrogen and collect it. When the liquid concentration or treatment effect is not good, the controller will control the solenoid valve to open the drain pipe 4 to discharge the waste liquid and replenish the new treatment liquid through the liquid addition pipe 6.

[0030] In addition, this embodiment has optimized the replacement reminder of the polymer membrane 305. The controller is equipped with a function to record the usage time of the polymer membrane 305. When the usage time of the polymer membrane 305 reaches the preset replacement cycle, the controller will issue an alarm to remind the operator to replace the polymer membrane 305 in time.

[0031] In practical applications, the system in this embodiment, through intelligent control, can more accurately control the process of waste gas treatment and separation and recovery, improve the system's automation level and operating efficiency, reduce manual intervention, and further ensure the effectiveness of waste gas treatment and the safety of the system.

[0032] Implementation effect: The waste gas treatment mechanism consists of a first container tank 1 and a second container tank 2, which are connected by a first connecting pipe 8, so that the waste gas can be treated sequentially through the two container tanks. This staged treatment method can target different components in the waste gas for targeted reactions, effectively improve the waste gas treatment effect, and ensure that harmful substances in the waste gas are fully removed or transformed.

[0033] The separation and recovery tank 3 is threadedly connected to the tank body via a fastening cover 308, and a rotating plate 304 is provided on the top of the fastening cover 308. This ensures the airtightness of the tank body, preventing waste gas leakage and environmental pollution. The tank is also clamped and fixed by an upper mounting plate 310 and a lower mounting plate 306. A sealing ring 312 is provided on the top and bottom of the polymer membrane 305, and slots matching the sealing ring 312 are provided on the upper mounting plate 310 and the lower mounting plate 306. This design makes the polymer membrane 305 securely installed, and the sealing ring 312 effectively prevents waste gas from leaking from the installation gaps, ensuring the smooth progress of the separation and recovery process. It also allows operators to quickly open or close the fastening cover 308 via the rotating plate 304, facilitating the installation, maintenance, and replacement of the internal components of the tank.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas recovery system for a germanium dioxide reduction furnace, comprising a waste gas treatment unit and a separation and recovery unit, characterized in that: The waste gas treatment mechanism includes a first container tank (1) and a second container tank (2). A first connecting pipe (8) is installed on the upper part of the first container tank (1). The other end of the first connecting pipe (8) passes through the upper right side of the second container tank (2) and extends to the lower part of the second container tank (2). The separation and recovery mechanism includes a separation and recovery tank (3). An installation seat (313) is fixedly installed on the bottom inner wall of the separation and recovery tank (3). An installation groove is opened on the top of the installation seat (313), and a lower installation plate (306) is provided in the installation groove opened on the top of the installation seat (313). A fastening cover (308) is provided on the upper part of the separation and recovery tank (3). A movable plate (311) is provided in the fastening cover (308). An upper installation plate (310) is rotatably connected to the bottom surface of the movable plate (311). A polymer membrane (305) is provided between the upper installation plate (310) and the lower installation plate (306).

2. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: The upper part of the inner ring of the separation and recycling tank (3) is provided with a threaded groove, and the outer ring of the fastening cover (308) is provided with a thread that matches the threaded groove on the upper part of the inner ring of the separation and recycling tank (3). A rotating plate (304) is fixedly installed on the top surface of the fastening cover (308).

3. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: The bottom surface of the fastening cover (308) is provided with a groove, and a spring (309) is fixedly installed on the side of the top inner wall of the groove that is close to the top surface of the movable plate (311).

4. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: The top and bottom of the polymer film (305) are provided with sealing rings (312). The upper mounting plate (310) and the lower mounting plate (306) are provided with slots that match the sealing rings (312) on their respective sides. Three mounting rods (307) that penetrate the lower mounting plate (306) are evenly installed on the bottom surface of the upper mounting plate (310). The lower part of the mounting rod (307) is provided with threads, and the outer rings on both sides where the mounting rod (307) penetrates the lower mounting plate (306) are provided with matching nuts for fixation.

5. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: The top of the separation and recycling tank (3) is fitted with a top cover (302) by a snap fastener, and a sealing gasket (303) is provided between the top cover (302) and the separation and recycling tank (3). An exhaust pipe (301) is installed in the middle of the left side of the separation and recycling tank (3).

6. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: The second container (2) is equipped with a second connecting pipe (9) at the top. The other end of the second connecting pipe (9) passes through the bottom of the separation and recovery tank (3) and through the mounting base (313). A vacuum pump (10) is installed on the second connecting pipe (9).

7. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: A vent pipe (7) is installed on the upper right side of the first container (1) and extends to the lower part of the container (1). Both the first container (1) and the second container (2) are equipped with liquid filling pipes (6) on the upper part of the front side, and the liquid filling pipes (6) are provided with sealing caps.

8. The waste gas recovery system for the germanium dioxide reduction furnace according to claim 1, characterized in that: Both the first container (1) and the second container (2) can be made of glass. The bottom of the first container (1) and the second container (2) is equipped with a drain pipe (4) and a solenoid valve is installed on the drain pipe (4). The bottom of the first container (1) and the second container (2) is equipped with multiple support legs (5).

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