Anode material production waste gas treatment tower

Abstract

The utility model discloses a negative material production waste gas treatment tower relates to negative material production waste gas treatment technical field, including tower seat, the inside of tower seat is provided with washing liquid groove, the upper surface welding of tower seat has washing cylinder, the upper surface welding of washing cylinder has filling cylinder. This negative material production waste gas treatment tower, through the throat shape pipe, the diameter is small in the middle, reaches the highest flow rate in the throat portion, at this time, when the washing liquid is sprayed in the throat shape pipe through the shower nozzle, is atomized into extremely small droplet under the impact of high -speed airflow, and the dust in the waste gas, pitch smoke particle has violent inertia collision, intercepts and condensation effect, and from the downcomer flow to the washing liquid groove, and the waste gas after pre -treatment is when passing through the filling cylinder, and the washing liquid is even sprayed washing liquid downward through the shower nozzle no.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology in the production of negative electrode materials, specifically a waste gas treatment tower for the production of negative electrode materials. Background Technology

[0002] In the production process of lithium-ion battery anode materials (such as artificial graphite, silicon-carbon composite materials, etc.), especially in high-temperature processes such as graphitization, carbonization, coating modification and sintering, a large amount of complex process waste gas is generated. This waste gas usually contains particulate matter, asphalt fumes (containing various polycyclic aromatic hydrocarbons), tar, VOCs (volatile organic compounds) and a small amount of acidic gases (such as HF, SO2) and other pollutants. At present, bag filters are easily clogged and caking by oil mist and humidity, and ordinary water washing towers have limited efficiency in removing micron-sized dust. Therefore, there is a need for a waste gas treatment device for anode material production that can efficiently treat the waste gas. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a waste gas treatment tower for negative electrode material production, which has the advantage of good pollutant removal effect.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a waste gas treatment tower for negative electrode material production, including a tower base, a washing liquid tank is provided inside the tower base, a washing cylinder is welded to the upper surface of the tower base, a filling cylinder is welded to the upper surface of the washing cylinder, and a demister is welded to the top of the filling cylinder.

[0007] A throat-shaped tube is fixedly installed inside the washing drum via a bracket. The bottom end of the throat-shaped tube is fixedly connected to an exhaust gas pipe, and the bottom end of the exhaust gas pipe passes through the washing drum and extends to the outside of the washing drum. A downcomer is fixedly connected to the bottom of the inner end of the exhaust gas pipe. A fixing ring is fixedly installed at the throat of the throat-shaped tube. A nozzle is fixedly installed at the outer end of the fixing ring, and the output end of the nozzle extends into the inside of the throat-shaped tube. A fixing frame is fixedly installed on the inner side wall of the tower base. A circulation pump is fixedly installed on the upper surface of the fixing frame. A first conduit is fixedly installed at the output end of the circulation pump, and the top end of the first conduit is fixedly connected to the input end of the nozzle.

[0008] Both the filling cylinder and the demister are fixedly installed with a first nozzle. The bottom end of the first guide tube is fixedly connected to a branch pipe, and the input ends of both nozzles are connected to the branch pipe. The bottom end of each branch pipe is fixedly connected to a second nozzle arranged at equal intervals. A grid is fixedly installed at the bottom of the filling cylinder, and baffles are fixedly installed at equal intervals at the top of the demister.

[0009] Furthermore, a tower cover is welded to the top of the demister, and an outlet pipe is fixedly installed on the top of the tower cover via a flange.

[0010] By adopting the above technical solution, the treatment tower can be better connected to the extraction and discharge equipment through the outlet pipe and discharged.

[0011] Furthermore, a conveying pipe and a discharging pipe are fixedly connected to the outer side of the tower base, and valves are installed in the middle of both the conveying pipe and the discharging pipe.

[0012] By adopting the above technical solutions, it is possible to better add washing liquid to the washing liquid tank or discharge the washing liquid after treating the waste gas.

[0013] Furthermore, observation windows are fixedly installed on the outer surfaces of both the washing drum and the demister drum, and a filling window is fixedly installed on the outer surface of the filling drum.

[0014] By adopting the above technical solutions, operators can better observe the interior.

[0015] Furthermore, the interior of the filling cylinder is filled with a plurality of hollow spheres.

[0016] By adopting the above technical solutions, pollutants and soluble gases in the exhaust gas can be removed more effectively.

[0017] Furthermore, the second nozzle is a spiral solid cone nozzle.

[0018] By adopting the above technical solution, the sprayed cone-shaped water curtain can be used to finely wash the exhaust gas.

[0019] (III) Beneficial Effects

[0020] Compared with existing technologies, this waste gas treatment tower for anode material production has the following advantages:

[0021] This invention utilizes a circulating pump to pump the washing liquid from the tower base into the throat-shaped tube, the filling cylinder, and the demister, thereby spraying pollutants in the exhaust gas. The throat-shaped tube, with its smaller diameter at the throat, achieves the highest flow velocity. When the washing liquid is sprayed into the throat-shaped tube through the nozzle, it is atomized into extremely fine droplets under the impact of the high-speed airflow. These droplets undergo intense inertial collisions, interception, and agglomeration with dust and asphalt fume particles in the exhaust gas, and then flow from the downcomer into the washing liquid tank. The pretreated waste gas... As the gas passes through the packed cylinder, the washing liquid is evenly sprayed downwards through nozzle two. The Pall rings or hollow spheres increase the specific surface area, facilitating mass transfer absorption and washing, further removing residual pollutants and soluble gases. When the exhaust gas enters the demister, the liquid droplets it carries collide with the baffles due to inertia and are captured. After collection, the liquid flows back into the washing liquid tank at the tower base, thus ensuring that the gas discharged from the outlet pipe is clean and dry, improving the treatment effect of the device on the exhaust gas from the production of negative electrode materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the throat-shaped tube structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the external structure of the circulating pump of this utility model;

[0026] Figure 5 This is a schematic diagram of the base structure of this utility model.

[0027] In the diagram: 1-Tower base, 2-Washing cylinder, 3-Filling cylinder, 4-Demisting cylinder, 5-Outlet pipe, 6-Tower cover, 7-Observation window, 8-Filling window, 9-Exhaust gas pipe, 10-Baffle plate, 11-Nose 1, 12-Grate, 13-Throat-shaped pipe, 14-Transport pipe, 15-Discharge pipe, 16-Fixing ring, 17-Nozzle, 18-Nozzle 2, 19-Branch pipe, 20-Conduit 1, 21-Circulating pump, 22-Washing liquid tank, 23-Fixing frame, 24-Support, 25-Downcomer. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5 This utility model provides a technical solution: a waste gas treatment tower for negative electrode material production, including a tower base 1, a washing liquid tank 22 is provided inside the tower base 1, a washing cylinder 2 is welded to the upper surface of the tower base 1, a filling cylinder 3 is welded to the upper surface of the washing cylinder 2, a demister 4 is welded to the top of the filling cylinder 3, a tower cover 6 is welded to the top of the demister 4, and an outlet pipe 5 is fixedly installed at the top of the tower cover 6 through a flange, so as to better connect the treatment tower to the extraction and discharge equipment through the outlet pipe 5 and discharge it.

[0030] The outer side of the tower base 1 is fixedly connected to the conveying pipe 14 and the discharge pipe 15. Valves are installed in the middle of the conveying pipe 14 and the discharge pipe 15 to better add washing liquid to the washing liquid tank 22 or to discharge the washing liquid after treating the waste gas. The outer side of the washing cylinder 2 and the demister cylinder 4 are fixedly installed with observation windows 7. The outer side of the filling cylinder 3 is fixedly installed with a filling window 8 to better allow the operator to observe the inside. The inside of the filling cylinder 3 is filled with a number of hollow spheres to better remove pollutants and soluble gases in the waste gas.

[0031] A throat-shaped tube 13 is fixedly installed inside the washing drum 2 via a bracket 24. The bottom end of the throat-shaped tube 13 is fixedly connected to an exhaust pipe 9, and the bottom end of the exhaust pipe 9 passes through the washing drum 2 and extends to the outside of the washing drum 2. A downcomer 25 is fixedly connected to the bottom of the inner end of the exhaust pipe 9. A fixing ring 16 is fixedly installed at the throat of the throat-shaped tube 13. A nozzle 17 is fixedly installed at the outer end of the fixing ring 16, and the output end of the nozzle 17 extends into the inside of the throat-shaped tube 13. A fixing frame 23 is fixedly installed on the inner side wall of the tower base 1. A circulation pump 21 is fixedly installed on the upper surface of the fixing frame 23. A conduit 20 is fixedly installed at the output end of the circulation pump 21, and the top end of the conduit 20 is fixedly connected to the input end of the nozzle 17.

[0032] Both the filling cylinder 3 and the demister cylinder 4 have nozzles 11 fixedly installed inside. The bottom end of the guide tube 20 is fixedly connected to a branch pipe 19, and the input ends of both nozzles 11 are connected to the branch pipe 19. The bottom end of each branch pipe 19 is fixedly connected to nozzles 18 arranged at equal intervals. Nozzles 18 are spiral solid cone nozzles. The cone-shaped water curtain sprayed out can finely wash the exhaust gas. A grid 12 is fixedly installed at the bottom inside the filling cylinder 3, and baffles 10 are fixedly installed at equal intervals inside the demister cylinder 4.

[0033] Working principle: During use, the extraction equipment is connected to the outlet pipe 5 via a pipeline. During extraction, the circulation pump 21 is started, pumping the washing liquid from the tower base 1 into the throat-shaped pipe 13, the filling cylinder 3, and the demister 4 respectively. When passing through the throat-shaped pipe 13, the diameter is small in the middle, reaching the highest flow velocity at the throat. Under the impact of the high-speed airflow, it is atomized into extremely fine droplets, which undergo violent inertial collisions, interception, and agglomeration with the dust and asphalt fume particles in the exhaust gas. The liquid then flows from the downcomer 25 into the washing liquid tank 22. The pre-treated exhaust gas then... When passing through the filling cylinder 3, the washing liquid is sprayed evenly downwards through the nozzle 18. The specific surface area is increased by the filling Pall rings or hollow spheres, which facilitate mass transfer absorption and washing, further removing residual pollutants and soluble gases. When the exhaust gas enters the demister 4, the liquid droplets it carries collide with the baffle 10 under inertia and are captured. After collection, the liquid flows back into the washing liquid tank 22 of the tower base 1, thus ensuring that the gas extracted from the outlet pipe 5 is clean. Then, it is extracted by the exhaust equipment and discharged through the pipeline.

[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 treatment tower for negative electrode material production, comprising a tower base (1), characterized in that: The tower base (1) has a washing liquid tank (22) inside, a washing cylinder (2) is welded to the upper surface of the tower base (1), a filling cylinder (3) is welded to the upper surface of the washing cylinder (2), and a demister cylinder (4) is welded to the top of the filling cylinder (3). The inside of the washing drum (2) is fixedly installed with a throat-shaped tube (13) by a bracket (24). The bottom end of the throat-shaped tube (13) is fixedly connected to an exhaust pipe (9), and the bottom end of the exhaust pipe (9) passes through the washing drum (2) and extends to the outside of the washing drum (2). The bottom of the inner end of the exhaust pipe (9) is fixedly connected to a downcomer (25). A fixing ring (16) is fixedly installed at the throat of the throat-shaped tube (13). A nozzle (17) is fixedly installed at the outer end of the fixing ring (16), and the output end of the nozzle (17) extends into the inside of the throat-shaped tube (13). A fixing frame (23) is fixedly installed on the inner side wall of the tower base (1). A circulation pump (21) is fixedly installed on the upper surface of the fixing frame (23). A conduit (20) is fixedly installed at the output end of the circulation pump (21). The top end of the conduit (20) is fixedly connected to the input end of the nozzle (17). Both the filling cylinder (3) and the demister cylinder (4) are fixedly installed with nozzles (11). The bottom end of the guide tube (20) is fixedly connected to a branch pipe (19), and the input ends of the two nozzles (11) are connected to the branch pipe (19). The bottom end of each branch pipe (19) is fixedly connected to nozzles (18) arranged at equal intervals. A grid (12) is fixedly installed at the bottom inside the filling cylinder (3), and baffles (10) are fixedly installed at equal intervals inside the demister cylinder (4).

2. The waste gas treatment tower for negative electrode material production according to claim 1, characterized in that: The top of the demister (4) is welded with a tower cover (6), and the top of the tower cover (6) is fixedly installed with an outlet pipe (5) by a flange.

3. The waste gas treatment tower for negative electrode material production according to claim 1, characterized in that: The outer side of the tower base (1) is fixedly connected to a conveying pipe (14) and a discharge pipe (15), and valves are installed in the middle of both the conveying pipe (14) and the discharge pipe (15).

4. The waste gas treatment tower for negative electrode material production according to claim 1, characterized in that: The outer sides of the washing drum (2) and the demister drum (4) are both fixedly equipped with observation windows (7), and the outer side of the filling drum (3) is fixedly equipped with a filling window (8).

5. The waste gas treatment tower for negative electrode material production according to claim 1, characterized in that: The interior of the filling cylinder (3) is filled with a number of hollow spheres.

6. The waste gas treatment tower for negative electrode material production according to claim 1, characterized in that: The second nozzle (18) is a spiral solid cone nozzle.

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