Sponge zirconium production tail gas purification treatment system

Abstract

The utility model discloses a sponge zirconium production tail gas purification treatment system, and relates to the field of sponge zirconium production tail gas treatment, the sponge zirconium production tail gas purification treatment system comprises a gravity dust collector, a gas inlet, a gas outlet and a slag discharge valve port, the gas inlet is fixed on the left side of the upper end of the gravity dust collector, and the gas outlet is fixed on the right side of the upper end of the gravity dust collector; a slag discharge valve port is mounted below the side edge of the gravity dust collector; and the air outlet is connected with the spray tower through a guide pipe. According to the sponge zirconium production tail gas purification treatment system, through the gravity dust collector, small particles in the process of discharging magnesium chloride in sponge zirconium production can be settled, the follow-up treatment load is relieved, and through cooperation with the vibration deslagging mechanism, impurities gathered in the gravity dust collector can be conveniently discharged; chlorine, hydrogen chloride, a small amount of chlorides and the like contained in the tail gas are removed through the spray tower, other impurities in the tail gas are further treated through the graphene adsorption tank, and the purpose of final purification is achieved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology in sponge zirconium production, specifically a purification and treatment system for exhaust gas in sponge zirconium production. Background Technology

[0002] Zirconium metal, also known as sponge zirconium, is widely used as a structural material in aerospace, military, nuclear, and chemical industries due to its exceptional high-temperature resistance, corrosion resistance, and extremely high hardness and strength. Regarding the magnesothermic reduction technology commonly used both domestically and internationally, compared to the single-furnace reduction method, the dual-furnace reduction method, through improvements in process, equipment, and control methods, separately processes zirconium tetrachloride and magnesium. After meeting the reduction conditions, an electrically heated channel is connected between the two reactors to carry out the reduction reaction and produce sponge zirconium.

[0003] The reduction reaction of zirconium tetrachloride is a gas-liquid reaction between gaseous zirconium tetrachloride and liquid magnesium, producing sponge zirconium that sinks to the bottom of the crucible and gradually grows. Along with the production of sponge zirconium, the byproduct magnesium chloride also increases with the increase of sponge zirconium crystals. When the magnesium chloride storage reaches a certain level, it is necessary to periodically discharge magnesium chloride to maintain the reaction liquid level. Ultimately, all magnesium chloride in the crucible needs to be discharged to reduce the load on the distillation stage and ultimately control the chlorine content in the sponge zirconium product. The discharge of magnesium chloride also generates a large amount of flue gas, which contains fine particles, chlorine, hydrogen chloride, and small amounts of chlorides. To avoid environmental pollution from the exhaust gas emissions, a sponge zirconium production exhaust gas purification system is designed to meet actual production needs. Utility Model Content

[0004] The purpose of this invention is to provide a system for purifying and treating exhaust gas from sponge zirconium production, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste gas purification system for sponge zirconium production, comprising a gravity dust collector, an air inlet, an air outlet, and a slag discharge valve. The air inlet is fixed to the upper left side of the gravity dust collector, and the air outlet is fixed to the upper right side of the gravity dust collector. A slag discharge valve is installed on the lower side of the gravity dust collector. The air outlet is connected to a spray tower via a conduit. The spray tower is fixed on a water tank, and a water pump is installed on the water tank. The spray tower is connected to an adsorption tank via a conduit, and the adsorption tank is connected to a chimney via a conduit and a booster pump.

[0006] Preferably, a vibration motor is fixed to the lower end face of the gravity dust collector, and the gravity dust collector is fixed to the base plate by a first spring. The vibration motor and the first spring provide a basic guarantee for the vibration dust collector to remove slag.

[0007] Preferably, the gravity dust collector has a fixed partition inside, and cleaning mechanisms are symmetrically installed on the sides of the partition. Through the action of the partition, the exhaust gas can be guided, which facilitates the settling of particulate matter in the exhaust gas.

[0008] Preferably, the cleaning mechanism includes a vertical rod, a counterweight, a second spring, a fixing plate, and a scraper. The vertical rod is symmetrically fixed to the partition plate at the front and back, and the counterweight is slidably connected to the vertical rod. The sliding guide effect between the counterweight and the vertical rod can ensure the stability of the counterweight's movement.

[0009] Preferably, a second spring is fixed between the counterweight and the vertical rod, and the second spring is symmetrically distributed about the center line of the counterweight. Through the elastic action of the second spring, the counterweight can move up and down within a certain range.

[0010] Preferably, a fixing plate is also fixed on the counterweight block, and scrapers are fixed on the fixing plate at equal intervals. The scrapers and the partition are slidably connected. Through the sliding action between the scrapers and the partition, the dust and impurities adhering to the surface of the partition can be scraped and cleaned to ensure that the surface of the partition is clean.

[0011] Preferably, a filter screen is installed inside the spray tower, and a spray head is also fixed inside the spray tower. The spray head is connected to a water pump through a conduit. With the above structure, the exhaust gas can be sprayed to remove chlorine, hydrogen chloride and a small amount of chloride from the exhaust gas.

[0012] Preferably, graphene plates are fixed at equal intervals inside the adsorption tank, and the graphene plates have a wavy structure. Through the action of the graphene plates, other impurities in the exhaust gas can be adsorbed and treated.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This sponge zirconium production tail gas purification and treatment system can settle the tiny particles emitted during the magnesium chloride emission process of sponge zirconium production through a gravity dust collector, reducing the load on subsequent treatment. In addition, with the cooperation of the vibration slag discharge mechanism, it can facilitate the discharge of impurities accumulated in the gravity dust collector. The spray tower removes chlorine, hydrogen chloride and a small amount of chloride contained in the tail gas. The graphene adsorption tank further treats other impurities in the tail gas, achieving the final purification purpose. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the overall structure of the device of this utility model;

[0015] Figure 2 This is a front view schematic diagram of the gravity dust collector of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the partition and cleaning mechanism of this utility model.

[0017] In the diagram: 1. Gravity dust collector; 101. Vibration motor; 102. First spring; 103. Base plate; 104. Partition plate; 2. Air inlet; 3. Air outlet; 4. Slag discharge valve; 5. Cleaning mechanism; 501. Vertical rod; 502. Counterweight; 503. Second spring; 504. Fixing plate; 505. Scraper; 6. Water tank; 7. Water pump; 8. Spray tower; 801. Filter screen; 802. Spray head; 9. Adsorption tank; 901. Graphene plate; 10. Booster pump; 11. Chimney. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3 This utility model provides a technical solution: a waste gas purification system for sponge zirconium production, including a gravity dust collector 1, an air inlet 2, an air outlet 3, and a slag discharge valve 4. The air inlet 2 is fixed on the upper left side of the gravity dust collector 1, the air outlet 3 is fixed on the upper right side of the gravity dust collector 1, and the slag discharge valve 4 is installed on the lower side of the gravity dust collector 1. The air outlet 3 is connected to a spray tower 8 through a conduit. The spray tower 8 is fixed on a water tank 6, and a water pump 7 is installed on the water tank 6. The spray tower 8 is connected to an adsorption tank 9 through a conduit, and the adsorption tank 9 is connected to a chimney 11 through a conduit and a booster pump 10.

[0020] A vibration motor 101 is fixed to the lower end face of the gravity dust collector 1, and the gravity dust collector 1 is fixed to the base plate 103 by the first spring 102; a partition 104 is fixed inside the gravity dust collector 1, and cleaning mechanisms 5 are symmetrically installed on the left and right sides of the partition 104; a filter screen 801 is installed inside the spray tower 8, and a spray head 802 is also fixed inside the spray tower 8, and the spray head 802 is connected to the water pump 7 through a conduit; graphene plates 901 are fixed at equal intervals inside the adsorption tank 9, and the graphene plates 901 have a corrugated structure;

[0021] When using this sponge zirconium production exhaust gas purification system, such as Figures 1-3As shown; the exhaust gas enters the gravity dust collector 1 through the air inlet 2. With the guidance of the baffle 104, the flow velocity of the exhaust gas in the gravity dust collector 1 can be reduced, which facilitates the settling of particulate matter in the exhaust gas in the gravity dust collector 1. After settling, the exhaust gas enters the spray tower 8 through the air outlet 3. With the help of the water pump 7, the water in the water tank 6 is transported to the nozzle 802 through the conduit and sprayed out. The water mist sprayed by the nozzle 802 can remove chlorine, hydrogen chloride and a small amount of chloride in the exhaust gas, thereby realizing the secondary treatment of the exhaust gas. The exhaust gas after secondary treatment is filtered through the filter screen 801. The filtered exhaust gas enters the adsorption tank 9 through the conduit. The corrugated graphene plate 901 in the adsorption tank 9 can increase the contact area with the exhaust gas, thereby adsorbing other impurities in the exhaust gas. Finally, the treated exhaust gas enters the chimney 11 through the booster pump 10 and is discharged outward.

[0022] The cleaning mechanism 5 includes a vertical rod 501, a counterweight 502, a second spring 503, a fixing plate 504, and a scraper 505. The vertical rod 501 is symmetrically fixed to the partition plate 104, and the counterweight 502 is slidably connected to the vertical rod 501. The second spring 503 is fixed between the counterweight 502 and the vertical rod 501, and the second spring 503 is symmetrically distributed about the center line of the counterweight 502. The fixing plate 504 is also fixed to the counterweight 502, and the scraper 505 is fixed at equal intervals on the fixing plate 504, and the scraper 505 is slidably connected to the partition plate 104.

[0023] After the device has been used for a period of time, such as Figures 1-3 As shown, when it is necessary to clean the impurities settled inside the gravity dust collector 1, simply open the slag discharge valve 4 and start the vibration motor 101. Through the action of the vibration motor 101 and the first spring 102, the gravity dust collector 1 vibrates, thereby discharging the impurities settled inside the gravity dust collector 1 through the slag discharge valve 4. When the gravity dust collector 1 vibrates, through inertia, gravity, and the elastic action of the second spring 503, the counterweight 502 moves up and down with the vibration of the gravity dust collector 1. With the sliding guide effect between the counterweight 502 and the vertical rod 501, the stability of the movement of the counterweight 502 can be ensured. When the counterweight 502 moves, it simultaneously drives the fixed plate 504 and the scraper 505 to abut against each other. Through the sliding action between the scraper 505 and the partition 104, the impurities adhering to the surface of the partition 104 can be scraped off, ensuring that the surface of the partition 104 is clean, thereby completing the cleaning function of the gravity dust collector 1. This is the working principle of the sponge zirconium production tail gas purification and treatment system.

[0024] 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 system for purifying and treating exhaust gas from sponge zirconium production, comprising a gravity dust collector (1), an air inlet (2), an air outlet (3), and a slag discharge valve (4), wherein the air inlet (2) is fixed to the upper left side of the gravity dust collector (1), the air outlet (3) is fixed to the upper right side of the gravity dust collector (1), and the slag discharge valve (4) is installed on the lower side of the gravity dust collector (1), characterized in that: The air outlet (3) is connected to the spray tower (8) via a conduit. The spray tower (8) is fixed on the water tank (6). A water pump (7) is installed on the water tank (6). The spray tower (8) is connected to the adsorption tank (9) via a conduit. The adsorption tank (9) is connected to the chimney (11) via a conduit and a booster pump (10). A partition (104) is fixed inside the gravity dust collector (1). A cleaning mechanism (5) is symmetrically installed on the left and right sides of the partition (104). The cleaning mechanism (5) includes a vertical rod (501), a counterweight (502), and a second spring (503). A fixed plate (504) and a scraper (505) are provided. The vertical rod (501) is symmetrically fixed on the partition plate (104) and a counterweight (502) is slidably connected on the vertical rod (501). A second spring (503) is fixed between the counterweight (502) and the vertical rod (501), and the second spring (503) is symmetrically distributed about the center line of the counterweight (502). A fixed plate (504) is also fixed on the counterweight (502), and scrapers (505) are fixed at equal intervals on the fixed plate (504), and the scrapers (505) are slidably connected to the partition plate (104).

2. The waste gas purification system for sponge zirconium production according to claim 1, characterized in that: The lower end face of the gravity dust collector (1) is fixed with a vibration motor (101), and the gravity dust collector (1) is fixed to the base plate (103) by a first spring (102).

3. The waste gas purification system for sponge zirconium production according to claim 1, characterized in that: The spray tower (8) is equipped with a filter screen (801) and a nozzle (802) is fixed inside the spray tower (8). The nozzle (802) is connected to the water pump (7) through a conduit.

4. The waste gas purification system for sponge zirconium production according to claim 1, characterized in that: The adsorption tank (9) is fixed with graphene plates (901) at equal intervals, and the graphene plates (901) have a wavy structure.

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