Tail gas separation treatment and recovery device for aqua regia gold smelting

Abstract

The utility model provides a tail gas separation treatment and recovery device for aqua regia gold smelting, which belongs to the technical field of tail gas purification and comprises a support frame, a first treatment tank, a second treatment tank, a third treatment tank, a third treatment tank, a fourth treatment tank and a fourth treatment tank. And the spraying structure comprises a water pump fixed to one side of the top end of the supporting frame, a water conveying pipe installed at the output end of the water pump and a rotating assembly arranged at the bottom end of the water conveying pipe. According to the device disclosed by the utility model, liquid is pumped by the water pump and conveyed into the side pipe, and is uniformly sprayed into the tank by the spray head, and meanwhile, the stirring rod drives the three-way joint to synchronously rotate, so that the efficient purification function of the device is realized, the solution is conveniently dispersed into tiny liquid drops, the gas-liquid contact area is greatly increased, and the full contact of reactants is facilitated; the reaction rate and effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas purification technology, specifically to an exhaust gas separation, treatment and recovery device for aqua regia gold refining. Background Technology

[0002] The traditional method for extracting precious metals from gold ore powder is to use aqua regia to dissolve and filter the powder to recover the precious metals. However, the reaction process generates a large amount of tail gas, including acidic gases such as chlorine, nitrogen oxides, hydrogen chloride, and hydrogen sulfide. If the waste gas is not treated, it will cause serious environmental pollution. Therefore, a tail gas separation, treatment, and recovery device for aqua regia gold refining is established to absorb harmful gases such as nitrogen oxides and chlorine, thereby achieving effective purification of the waste gas and resource recovery.

[0003] Chinese patent CN218741246U discloses a treatment and absorption device for acidic exhaust gas, including an absorption chamber. An air inlet pipe is connected to the upper surface of the absorption chamber near its left side, and an intake fan is installed inside the air inlet pipe. An exhaust pipe is connected to the right side of the absorption chamber near its right side, and an exhaust fan is installed inside the exhaust pipe. A filter mechanism is provided on the upper surface of the air inlet pipe, and an absorption mechanism is provided on the upper surface of the absorption chamber. This acidic exhaust gas treatment and absorption device incorporates a filter mechanism. By installing a filter plate inside the air inlet pipe, the filter plate effectively filters dust or other particulate impurities in the acidic exhaust gas, preventing them from entering the absorption device and solving the problem of obstructed airflow for acidic exhaust gas. The filter plate is detachably connected, facilitating subsequent cleaning.

[0004] The aforementioned patent still has the following shortcomings: it has the defect of incomplete gas reaction. Because the gas in the existing device is directly injected into the tank, the gas-liquid contact area is limited, resulting in low mass transfer efficiency. Some gas cannot fully contact the reactants in the solution, resulting in incomplete reaction and reduced reaction efficiency and product yield. Utility Model Content

[0005] This invention provides a tail gas separation, treatment, and recovery device for aqua regia gold refining, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a tail gas separation, treatment, and recovery device for aqua regia refining, including a support frame and further comprising:

[0008] The first treatment tank is fixed to one side of the top of the support frame, and a first corrosion-resistant fan is installed on one side of the top of the first treatment tank. An air inlet pipe is installed on one side of the first corrosion-resistant fan, and a first air delivery pipe is installed at the bottom of one side of the first corrosion-resistant fan.

[0009] The second treatment tank is fixed on the other side of the top of the support frame, and a second corrosion-resistant fan is fixed on one side of the top of the second treatment tank. A connecting pipe connected to the first treatment tank is installed on one side of the second corrosion-resistant fan, and a second air supply pipe is installed at the bottom of one side of the second corrosion-resistant fan.

[0010] Solenoid valves are respectively installed at the bottom ends of the first gas supply pipe and the second gas supply pipe, and a gas distributor is installed on one side of the solenoid valve.

[0011] The purification structure is located on the other side of the top of the second treatment tank and is used to purify the discharged gas.

[0012] Drain valves are installed on one side of the bottom of the first treatment tank and the second treatment tank, respectively;

[0013] A drive wheel is rotatably connected to the bottom end of the support frame, and a drive belt is sleeved on the outer side of the drive wheel. A stirring rod is connected to the top end of the gas distributor, and a drive motor is installed at the bottom end of one set of drive wheels.

[0014] A spray structure is provided on one side of the top of a support frame. The spray structure includes a water pump fixed on one side of the top of the support frame, a water delivery pipe installed at the output end of the water pump, and a rotating assembly provided at the bottom end of the water delivery pipe.

[0015] Through the above technical solution, the exhaust gas is input into the first treatment tank by the first corrosion-resistant fan, so that acidic gases such as chlorine are initially absorbed by saturated brine. Then, the second corrosion-resistant fan transports the gas to the second treatment tank, where the residual acidic components are further neutralized by sodium hydroxide solution. Finally, the gas is discharged after being purified by the purification structure.

[0016] Furthermore, the rotating assembly includes a rotary joint fixed to the bottom end of the water supply pipe, a tee joint installed at the bottom end of the rotary joint and connected to the stirring rod, side pipes fixed on both sides of the tee joint, and a nozzle installed at the bottom end of the side pipe.

[0017] The above technical solution involves using a water pump to extract liquid from the first or second treatment tank and transport it to a side pipe, where it is then evenly sprayed into the tank by a nozzle. Simultaneously, a stirring rod drives the three-way connector to rotate synchronously, ensuring uniform spraying.

[0018] Furthermore, the three-way connector forms a rotating structure with the water supply pipe through a rotary joint, and the input end of the water pump is connected to the first treatment tank or the second treatment tank respectively.

[0019] The above technical solution enables the tee connector to be rotated and connected to the water pipe via a rotary joint, so as to facilitate precise spraying in different areas inside the tank.

[0020] Furthermore, several groups of nozzles are provided at the bottom end of the side tube, and the several groups of nozzles are distributed at equal intervals at the bottom end of the side tube.

[0021] Through the above technical solution, evenly spaced nozzles can form a uniform water mist coverage layer, expand the gas-liquid contact area, and improve the absorption efficiency of harmful gases.

[0022] Furthermore, the purification structure includes a fixed shell fixed to one side of the top of the second treatment tank, a demister installed inside the fixed shell, a shell detachably installed on the top of the fixed shell, an activated carbon filter detachably installed inside the shell, and an exhaust pipe threaded to the top of the shell.

[0023] The above technical solution uses a demister to intercept and remove liquid droplets entrained in the gas, an activated carbon filter to adsorb residual volatile organic compounds and trace amounts of harmful gases, and finally the purified gas is discharged through an exhaust pipe.

[0024] Furthermore, the outer side wall at the top of the outer casing is provided with an external thread, and the bottom end of the exhaust pipe is provided with an internal thread that mates with the external thread.

[0025] The above technical solution enables quick assembly and disassembly of the outer casing and exhaust pipe, ensuring both sealing and easy replacement of the activated carbon filter.

[0026] The above-described solution of this utility model has at least the following beneficial effects:

[0027] 1. This utility model uses a water pump to draw liquid and transport it to a side pipe, and then sprays it evenly into the tank through a nozzle. At the same time, the stirring rod drives the three-way connector to rotate synchronously, thereby realizing the efficient purification function of this device. It facilitates the dispersion of the solution into tiny droplets, greatly increases the gas-liquid contact area, helps the reactants to fully contact, and improves the reaction rate and effect.

[0028] 2. This utility model uses a demister to intercept and remove liquid droplets entrained in the gas, and an activated carbon filter to adsorb residual volatile organic compounds and trace amounts of harmful gases. This enables the device to perform exhaust gas treatment, effectively removing liquid droplets entrained in the exhaust gas, and removing unreacted harmful gases through physical adsorption, thereby achieving the purpose of purifying the exhaust gas. Attached Figure Description

[0029] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0030] Figure 2This is the second schematic diagram of the structure of this utility model;

[0031] Figure 3 This is the third schematic diagram of the structure of this utility model;

[0032] Figure 4 This is a three-dimensional structural diagram of the spray structure provided by this utility model;

[0033] Figure 5 This is a three-dimensional cross-sectional structural diagram of the purification structure provided by this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Support frame; 2. Spray structure; 201. Water pump; 202. Water supply pipe; 203. Rotary joint; 204. Side pipe; 205. T-joint; 206. Sprayer head; 3. Second air supply pipe; 4. Solenoid valve; 5. First air supply pipe; 6. Air inlet pipe; 7. First corrosion-resistant fan; 8. First treatment tank; 9. Purification structure; 901. Outer shell; 902. Fixed shell; 903. Demister; 904. Activated carbon filter; 905. Exhaust pipe; 10. Connecting pipe; 11. Second corrosion-resistant fan; 12. Second treatment tank; 13. Stirring rod; 14. Gas distributor; 15. Drive motor; 16. Transmission belt; 17. Transmission wheel; 18. Drain valve. Detailed Implementation

[0036] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] like Figures 1 to 5 As shown, an embodiment of this utility model provides a tail gas separation, treatment, and recovery device for aqua regia refining, including a support frame 1, and further comprising:

[0038] The first treatment tank 8 is fixed to one side of the top of the support frame 1, and a first corrosion-resistant fan 7 is installed on one side of the top of the first treatment tank 8. An air inlet pipe 6 is installed on one side of the first corrosion-resistant fan 7, and a first air delivery pipe 5 is installed at the bottom of one side of the first corrosion-resistant fan 7.

[0039] The second treatment tank 12 is fixed on the other side of the top of the support frame 1, and a second corrosion-resistant fan 11 is fixed on one side of the top of the second treatment tank 12. A connecting pipe 10 connected to the first treatment tank 8 is installed on one side of the second corrosion-resistant fan 11, and a second air supply pipe 3 is installed at the bottom of one side of the second corrosion-resistant fan 11.

[0040] Solenoid valve 4 is installed at the bottom of the first gas supply pipe 5 and the second gas supply pipe 3 respectively, and a gas distributor 14 is installed on one side of solenoid valve 4.

[0041] Purification structure 9 is located on the other side of the top of the second treatment tank 12 and is used to purify the discharged gas.

[0042] Drain valves 18 are installed on one side of the bottom of the first treatment tank 8 and the second treatment tank 12, respectively;

[0043] The transmission wheel 17 is rotatably connected to the bottom end of the support frame 1, and a transmission belt 16 is sleeved on the outer side of the transmission wheel 17. The top end of the gas distributor 14 is connected to the stirring rod 13, and a drive motor 15 is installed at the bottom end of one set of transmission wheels 17.

[0044] The spray structure 2 is located on one side of the top of the support frame 1. The spray structure 2 includes a water pump 201 fixed on one side of the top of the support frame 1, a water supply pipe 202 installed at the output end of the water pump 201, and a rotating component located at the bottom end of the water supply pipe 202.

[0045] In this embodiment of the invention, the first treatment tank 8 is filled with saturated brine, and the second treatment tank 12 is filled with sodium hydroxide solution. First, exhaust gas is input into the first treatment tank 8 through the first corrosion-resistant fan 7 and the air inlet pipe 6. The exhaust gas is then introduced into the gas distributor 14 through the first gas delivery pipe 5 by the control solenoid valve 4. The gas distributor 14 disperses the gas flow into tiny bubbles. The stirring rod 13, driven by the drive motor 15 and the transmission wheel 17, stirs the saturated brine, so that acidic gases such as chlorine are initially absorbed. After treatment, the gas is transported to another set of gas distributors 14 through the second gas delivery pipe 3 via the connecting pipe 10 and the second corrosion-resistant fan 11, so that the gas enters the second treatment tank 12. The sodium hydroxide solution in the second treatment tank 12 further neutralizes the residual acidic components. Finally, the gas is discharged after being purified by the purification structure 9. The two sets of transmission wheels 17 are linked by the transmission belt 16 so that the two sets of stirring rods 13 rotate synchronously.

[0046] like Figure 4 As shown, the rotating assembly includes a rotary joint 203 fixed to the bottom of the water supply pipe 202, a three-way joint 205 installed at the bottom of the rotary joint 203 and connected to the stirring rod 13, side pipes 204 fixed on both sides of the three-way joint 205, and nozzles 206 installed at the bottom of the side pipes 204. The three-way joint 205 forms a rotating structure with the water supply pipe 202 through the rotary joint 203. The input end of the water pump 201 is connected to the first treatment tank 8 or the second treatment tank 12 respectively. Several groups of nozzles 206 are provided at the bottom of the side pipes 204, and the several groups of nozzles 206 are distributed at equal intervals at the bottom of the side pipes 204.

[0047] In this embodiment of the invention, the liquid in the first treatment tank 8 or the second treatment tank 12 is drawn by the water pump 201 and transported to the rotary joint 203 through the water pipe 202. Then, the liquid is diverted to the side pipes 204 on both sides through the three-way joint 205 and evenly sprayed into the tank by the nozzle 206. The sprayed liquid and gas are in full contact to enhance the reaction. During this process, the stirring rod 13 drives the three-way joint 205 to rotate synchronously to ensure uniform spraying and further improve the gas-liquid mixing efficiency.

[0048] like Figure 5 As shown, the purification structure 9 includes a fixed shell 902 fixed to one side of the top of the second treatment tank 12, a demister 903 installed inside the fixed shell 902, an outer shell 901 detachably installed on the top of the fixed shell 902, an activated carbon filter 904 detachably installed inside the outer shell 901, and an exhaust pipe 905 threadedly connected to the top of the outer shell 901. The outer side wall of the top of the outer shell 901 is provided with an external thread, and the bottom end of the exhaust pipe 905 is provided with an internal thread that cooperates with the external thread.

[0049] In this embodiment of the utility model, the treated gas is introduced through the fixed shell 902, and the demister 903 intercepts and removes the liquid droplets entrained in the gas to prevent the liquid from entering the subsequent structure. Then the gas enters the interior of the shell 901 and is adsorbed by the activated carbon filter 904 to adsorb residual volatile organic compounds and trace amounts of harmful gases. Finally, the purified gas is discharged through the exhaust pipe 905. The activated carbon filter 904 adopts a detachable design for easy periodic replacement and maintenance.

[0050] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An aqua regia gold refining tail gas separation treatment and recovery device, comprising a support frame (1), characterized in that, Also includes: The first treatment tank (8) is fixed on one side of the top of the support frame (1), and a first corrosion-resistant fan (7) is installed on one side of the top of the first treatment tank (8). An air inlet pipe (6) is installed on one side of the first corrosion-resistant fan (7), and a first air delivery pipe (5) is installed at the bottom of one side of the first corrosion-resistant fan (7). The second processing tank (12) is fixed on the other side of the top of the support frame (1), and a second corrosion-resistant fan (11) is fixed on one side of the top of the second processing tank (12). A connecting pipe (10) connected to the first processing tank (8) is installed on one side of the second corrosion-resistant fan (11), and a second air supply pipe (3) is installed at the bottom of one side of the second corrosion-resistant fan (11). Solenoid valves (4) are installed at the bottom ends of the first gas pipe (5) and the second gas pipe (3), respectively, and a gas distributor (14) is installed on one side of the solenoid valves (4). The purification structure (9) is located on the other side of the top of the second treatment tank (12) and is used to purify the discharged gas. Drain valves (18) are installed on one side of the bottom of the first treatment tank (8) and the second treatment tank (12), respectively; A drive wheel (17) is rotatably connected to the bottom end of the support frame (1), and a drive belt (16) is sleeved on the outside of the drive wheel (17). A stirring rod (13) is connected to the top end of the gas distributor (14), and a drive motor (15) is installed at the bottom end of one set of the drive wheels (17). A spray structure (2) is disposed on one side of the top of the support frame (1). The spray structure (2) includes a water pump (201) fixed on one side of the top of the support frame (1), a water supply pipe (202) installed at the output end of the water pump (201), and a rotating assembly disposed at the bottom end of the water supply pipe (202).

2. The device for treating and recycling the tail gas of aqua regia gold refining according to claim 1, characterized in that, The rotating assembly includes a rotary joint (203) fixed to the bottom of the water supply pipe (202), a tee joint (205) installed at the bottom of the rotary joint (203) and connected to the stirring rod (13), side pipes (204) fixed on both sides of the tee joint (205), and a nozzle (206) installed at the bottom of the side pipe (204).

3. The device for treating and recycling the tail gas of aqua regia according to claim 2, characterized in that, The three-way connector (205) forms a rotating structure with the water pipe (202) through the rotary connector (203), and the input end of the water pump (201) is connected to the first treatment tank (8) or the second treatment tank (12) respectively.

4. The device for treating and recycling the tail gas of aqua regia according to claim 2, characterized in that, The nozzles (206) are arranged in several groups at the bottom end of the side tube (204), and the several groups of nozzles (206) are distributed at equal intervals at the bottom end of the side tube (204).

5. The device for treating and recycling the tail gas of aqua regia according to claim 1, characterized in that, The purification structure (9) includes a fixed shell (902) fixed to one side of the top of the second treatment tank (12), a demister (903) installed inside the fixed shell (902), an outer shell (901) detachably installed at the top of the fixed shell (902), an activated carbon filter (904) detachably installed inside the outer shell (901), and an exhaust pipe (905) threaded to the top of the outer shell (901).

6. The device for treating and recycling the tail gas of aqua regia according to claim 5, characterized in that, The outer side wall at the top of the outer casing (901) is provided with an external thread, and the interior of the bottom end of the exhaust pipe (905) is provided with an internal thread that cooperates with the external thread.

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