A continuous carbon dioxide desulfurization unit

Abstract

This utility model discloses a continuous carbon dioxide desulfurization device, including a tower body. An inlet pipe is connected to the lower inner wall of the tower body, and an outlet pipe is connected to the lower part of the inlet pipe. A liquid inlet pipe is connected to the upper inner wall of the tower body, and a nozzle is installed below the liquid inlet pipe. An adjustment mechanism is installed inside the inlet pipe. The adjustment mechanism includes crossbars, a sealing ring, a vertical plate, a round rod, and guide columns. There are six crossbars. This utility model relates to the field of carbon dioxide treatment technology. This continuous carbon dioxide desulfurization device, through the cooperation of the crossbars, sealing ring, vertical plate, round rod, and guide columns, achieves the alteration of the internal angle of carbon dioxide gas entering the tower body. This solves the problem that because the angle of the inlet below the inlet pipe is fixed, the flow field distribution of carbon dioxide gas entering the desulfurization tower is uneven, resulting in the contact area between the gas and the desulfurizing agent being limited to a specific space, forming a large number of reaction blind zones.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide treatment technology, specifically a continuous carbon dioxide desulfurization device. Background Technology

[0002] Carbon dioxide is a colorless and odorless gas at room temperature and pressure, or a colorless and odorless gas with a slightly acidic taste in its aqueous solution. It is also a common greenhouse gas and a component of air. When carbon dioxide is purified, it needs to be desulfurized by a continuous desulfurization unit to remove the sulfur element inside the carbon dioxide.

[0003] In actual use, carbon dioxide gas enters the interior of the desulfurization tower through the inlet pipe, while desulfurizing agent is sprayed into the interior of the desulfurization tower to remove sulfur from the carbon dioxide gas.

[0004] However, when carbon dioxide enters the interior of the tower through the inlet pipe, the angle of the inlet below the inlet pipe is fixed, which results in a fixed direction of carbon dioxide ejection. This leads to an uneven distribution of the carbon dioxide gas flow field entering the desulfurization tower, which limits the contact area between the gas and the desulfurizing agent to a specific space, forming a large number of reaction blind zones. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a continuous carbon dioxide desulfurization device, which solves the problem that because the angle of the air inlet below the air inlet pipe is fixed, the direction of carbon dioxide ejection is also fixed, resulting in an uneven distribution of the carbon dioxide gas flow field entering the desulfurization tower, which limits the contact area between the gas and the desulfurizing agent to a specific space and forms a large number of reaction blind zones.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a continuous carbon dioxide desulfurization device, comprising a tower body, an inlet pipe connected to the lower part of the inner wall of the tower body, an outlet pipe connected to the lower part of the inlet pipe, a liquid inlet pipe connected to the upper part of the inner wall of the tower body, a nozzle disposed below the liquid inlet pipe, and an adjustment mechanism disposed inside the inlet pipe; the adjustment mechanism comprises a crossbar, a sealing ring, a vertical plate, a round rod, and a guide column; there are six crossbars, one of which passes through the inlet pipe and is movably connected to the inlet pipe, a sealing ring is fixedly connected to the side wall of the inlet pipe, the inner wall of the sealing ring is attached to the outer wall of one crossbar, a vertical plate is fixedly connected to the end of one crossbar, there are six vertical plates, two adjacent vertical plates are fixedly connected by a crossbar, a round rod is slidably connected to the front of the vertical plate, a guide column is fixedly connected to the back of the round rod, and the guide column is rotatably connected to the inner wall of the outlet pipe by a pin.

[0007] Preferably, an empty box is fixed to the side wall of the tower body, and an electric telescopic rod is fixed to the inner wall of the empty box by bolts. A column is fixed to the output end of the electric telescopic rod by bolts. The column passes through the empty box and is movably connected to the empty box. The bottom of the side wall of the column is fixed to the beginning of a crossbar.

[0008] Preferably, the inner wall of the tower body is fixed with connecting lugs by bolts, and a filling layer is fixed to the top of the connecting lugs.

[0009] Preferably, the top and bottom of the tower body are respectively connected to an exhaust pipe and a sewage pipe, and a support leg is fixedly connected to the bottom of the tower body.

[0010] Preferably, the inlet pipe is provided with a rotating mechanism, which consists of five sets; the rotating mechanism includes an impeller, a gear, and a gear ring; both ends of the impeller are rotatably connected to the inner wall of the inlet pipe through sealed bearings, and one end extends to the outside of the inlet pipe; one end of the impeller is fixedly connected to a gear, and the side wall of the gear is meshed with a gear ring; the gear ring is fixedly connected to the outer wall of the nozzle; the upper part of the outer wall of the nozzle is rotatably connected to the lower part of the inner wall of the inlet pipe through a sealed bearing.

[0011] Preferably, a cover is fixedly connected to the lower part of the liquid inlet pipe, and the nozzle penetrates through the cover.

[0012] Beneficial effects

[0013] This utility model provides a continuous carbon dioxide desulfurization device. It has the following advantages: This continuous carbon dioxide desulfurization device, through the cooperation of an electric telescopic rod, column, crossbar, sealing ring, vertical plate, round rod, and guide column, achieves a change in the angle at which carbon dioxide gas enters the tower. This solves the problem that because the angle of the inlet below the inlet pipe is fixed, the direction of carbon dioxide ejection is also fixed, resulting in an uneven distribution of the carbon dioxide gas flow field entering the desulfurization tower, which limits the contact area between the gas and the desulfurizing agent to a specific space, forming a large number of reaction blind zones.

[0014] By coordinating the impeller, gears, gear rings, and shroud, the desulfurization liquid is atomized into a rotating spray pattern, covering a larger area of ​​the upper part of the tower. This solves the problem of the traditional fixed spray mode, where the nozzle position and angle are fixed, and the desulfurization liquid can only cover a local area of ​​the upper part of the tower after atomization, which easily forms spray dead zones and causes the sulfide content in the final discharged gas to exceed the standard, seriously affecting the desulfurization effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 An exterior schematic diagram;

[0017] Figure 3 for Figure 1 Structural diagram of the electric telescopic mast, uprights, and tower body;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the central air intake pipe, vertical plate, and guide column;

[0019] Figure 5 for Figure 1 A schematic diagram of the structure of the liquid inlet pipe, impeller, and nozzle.

[0020] In the diagram: 1. Tower body; 2. Air inlet pipe; 3. Exhaust pipe; 4. Sewage pipe; 5. Liquid inlet pipe; 6. Filling layer; 7. Support leg; 8. Empty box; 9. Electric telescopic rod; 10. Column; 11. Horizontal bar; 12. Sealing ring; 13. Vertical plate; 14. Round rod; 15. Guide column; 16. Air outlet pipe; 17. Impeller; 18. Gear; 19. Gear ring; 20. Nozzle; 21. Cover; 22. Connecting lug. 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] Because the angle of the air inlet below the air inlet pipe is fixed, the direction of carbon dioxide ejection is also fixed, resulting in an uneven distribution of the carbon dioxide gas flow field entering the desulfurization tower. This limits the contact area between the gas and the desulfurizing agent to a specific space, creating a large number of reaction blind zones.

[0023] In view of this, the present invention provides a continuous carbon dioxide desulfurization device. Through the cooperation of the electric telescopic rod, column, crossbar, sealing ring, vertical plate, round rod and guide column, the internal angle of carbon dioxide gas entering the tower body is changed. This solves the problem that since the angle of the air inlet below the air inlet pipe is fixed, the direction of carbon dioxide spraying is also fixed, resulting in uneven distribution of carbon dioxide gas flow field entering the desulfurization tower. This causes the contact area between the gas and the desulfurizing agent to be limited to a specific space, forming a large number of reaction blind zones.

[0024] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components are connected in the order of operation. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0025] Example 1, by Figure 1-5 As can be seen, the continuous carbon dioxide desulfurization device in this case includes a tower body 1, an inlet pipe 2 connected to the lower part of the inner wall of the tower body 1, an outlet pipe 16 connected to the lower part of the inlet pipe 2, a liquid inlet pipe 5 connected to the upper part of the inner wall of the tower body 1, a nozzle 20 installed below the liquid inlet pipe 5, and an adjustment mechanism installed inside the inlet pipe 2; the adjustment mechanism includes a crossbar 11, a sealing ring 12, a vertical plate 13, a round rod 14, and a guide column 15; there are six crossbars 11, one of which passes through the inlet pipe 2. The air pipe 2 is movably connected to the air inlet pipe 2. A sealing ring 12 is fixedly connected to the side wall of the air inlet pipe 2. The inner wall of the sealing ring 12 is attached to the outer wall of a crossbar 11. A vertical plate 13 is fixedly connected to the end of the crossbar 11. There are six vertical plates 13. Two adjacent vertical plates 13 are fixedly connected to each other through the crossbar 11. A round rod 14 is slidably connected to the front of the vertical plate 13. A guide column 15 is fixedly connected to the back of the round rod 14. The guide column 15 is rotatably connected to the inner wall of the air outlet pipe 16 through a pin.

[0026] In the specific implementation process, it is worth noting that both the inlet pipe 2 and the outlet pipe 16 are used for gas transportation and are made of 316L stainless steel, which has strong corrosion resistance to ensure the durability of the gas transportation channel. The liquid inlet pipe 5 and the nozzle 20 are used to transport desulfurization liquid (such as sodium hydroxide solution or amine solution) through the liquid inlet pipe, and the nozzle 20 realizes the atomization and dispersion of the desulfurization liquid. The liquid inlet pipe 5 is made of 316L stainless steel, and the nozzle 20 adopts a silicon carbide ceramic or polytetrafluoroethylene (PTFE) coated metal substrate structure. Silicon carbide ceramic has high hardness and good chemical stability, while PTFE coating can reduce the corrosion and adhesion of desulfurization liquid to the nozzle 20. When the continuous desulfurization unit is working, the operator first... The end of the liquid inlet pipe 5 is connected to the water tank. The desulfurizing agent inside the water tank is transported to the liquid inlet pipe 5 through the conveying equipment inside the water tank. Finally, it is sprayed into the interior of the tower body 1 through the nozzle 20. At the same time, carbon dioxide gas enters the gas inlet pipe 2 and finally enters the interior of the tower body 1 through the gas outlet pipe 16. The gas and liquid come into contact and the absorption and removal of sulfides are completed in the tower body 1, and the carbon dioxide gas is continuously desulfurized. The crossbar 11, vertical plate 13, and round bar 14 are made of 304 stainless steel, which has a certain strength and corrosion resistance. The guide column is made of 304 stainless steel with wear-resistant ceramic coating (such as alumina ceramic coating) to reduce airflow erosion and wear and extend service life.

[0027] At this time, the leftmost horizontal bar 11 is in the sealing ring 12. The sealing ring 12 is made of fluororubber (FKM). Fluororubber has excellent temperature resistance, oil resistance and chemical corrosion resistance. It can stably seal in the medium environment of the desulfurization unit (such as sulfur-containing gas or desulfurization liquid vapor). The leftmost horizontal bar 11 drives the vertical plate 13 to move. Multiple vertical plates 13 move simultaneously through multiple horizontal bars 11. The vertical plate 13 drives the round rod 14 to rotate in the limiting groove on its surface. The round rod 14 drives the guide plate 15 to rotate in a circle with the pin as the axis, changing the cross-sectional area and direction of the airflow channel in the inlet pipe, thereby changing the angle at which carbon dioxide gas enters the interior of the tower body 1.

[0028] Furthermore, an empty box 8 is fixed to the side wall of the tower body 1, and an electric telescopic rod 9 is fixed to the inner wall of the empty box 8 by bolts. The output end of the electric telescopic rod 9 is fixed to a column 10 by bolts. The column 10 passes through the empty box 8 and is movably connected to the empty box 8. The lower side wall of the column 10 is fixed to the beginning of a crossbar 11.

[0029] In the specific implementation process, it is worth noting that a sliding door can be installed on the front of the empty box 8. Workers can open the door and turn the bolts to disassemble and assemble the electric telescopic rod 9. Ventilation holes can be opened on the side wall of the empty box 8 to dissipate heat from the electric telescopic rod 9, or a water-cooling device can be installed inside the empty box 8 to cool it down. The electric telescopic rod 9 is model LST-50. The connection between the electric telescopic rod 9 and the external controller uses RVSP twisted-pair shielded cable. The twisted-pair structure can cancel electromagnetic interference, and the shielding layer effectively blocks the motors and frequency converters around the tower body 1. Electromagnetic radiation from devices such as telescopic rods is minimized to ensure stable transmission of control signals (such as telescopic rod extension / retraction commands and stroke feedback signals). The operator starts the electric telescopic rod 9 through the controller, which drives the column 10 to move. The column 10 moves within the empty box 8 and is then limited. The column 10 drives the leftmost horizontal bar 11 to move, thereby causing the guide column 15 to rotate. Through the reciprocating extension and retraction of the electric telescopic rod 9, the guide column 15 swings back and forth. After completion, the operator stops the electric telescopic rod 9 through the controller, thus driving the guide column 15 to work.

[0030] Furthermore, the inner wall of the tower body 1 is fixed with connecting lugs 22 by bolts, and a filling layer 6 is fixed to the top of the connecting lugs 22.

[0031] In the specific implementation process, it is worth noting that the connecting ear 22 is made of 304 stainless steel, and the filling layer 6 is generally filled with Pall rings, Raschig rings, etc., made of plastic or metal. The staff can disassemble and replace the filling layer 6 by rotating the bolts on the connecting ear 22. When the sulfur-containing carbon dioxide gas enters the tower body 1 from the inlet pipe 2, it flows upward through the filling layer 6, while the desulfurization liquid is sprayed downward from the nozzle 20. In this process, the gas and liquid flow on the surface and between the gaps of the packing. The packing provides abundant contact sites for the gas and liquid phases. The gas-liquid contact area can be increased by several times or even tens of times, which greatly promotes the mass transfer process of sulfide gas phase to liquid phase desulfurizing agent, so that the desulfurization reaction can be carried out more fully and the desulfurization efficiency can be improved.

[0032] Furthermore, the top and bottom of the tower body 1 are respectively connected to an exhaust pipe 3 and a sewage pipe 4, and a support leg 7 is fixedly connected to the bottom of the tower body 1.

[0033] In the specific implementation process, it is worth noting that the exhaust pipe 3 and the sewage pipe 4 are made of 316L stainless steel. After the desulfurization is completed, the carbon dioxide gas is discharged from the interior of the tower body 1 through the exhaust pipe 3, and the waste liquid is discharged from the interior of the tower body 1 through the sewage pipe 4. There are four support legs 7, which support the tower body 1.

[0034] Example 2, by Figure 1 , 3 As shown in Figure 5, the inlet pipe 5 is equipped with a rotating mechanism, which consists of five sets. The rotating mechanism includes an impeller 17, a gear 18, and a gear ring 19. Both ends of the impeller 17 are rotatably connected to the inner wall of the inlet pipe 5 through sealed bearings, and one end extends to the outside of the inlet pipe 5. One end of the impeller 17 is fixedly connected to the gear 18, and the side wall of the gear 18 is meshed with the gear ring 19. The gear ring 19 is fixedly connected to the outer wall of the nozzle 20, and the upper part of the outer wall of the nozzle 20 is rotatably connected to the lower part of the inner wall of the inlet pipe 5 through a sealed bearing.

[0035] In the specific implementation process, it is worth noting that the impeller 17 is made of engineering plastics (such as polypropylene PP, polyvinylidene fluoride PVDF), the gear 18 and gear ring 19 are made of 45 steel with nitriding treatment, the sealing bearing between the impeller 17 and the liquid inlet pipe 5 is a ceramic hybrid bearing Si3N4 ceramic ball + stainless steel ring, and the sealing bearing between the nozzle 20 and the liquid inlet pipe 5 is a double row angular contact ball bearing (316L stainless steel + ceramic ball). When the desulfurization liquid flows through the liquid inlet pipe 5, it impacts the impeller 17, causing it to rotate. The impeller 17 drives the gear 18 to rotate, the gear 18 drives the gear ring 19 to rotate, and the gear ring 19 drives the nozzle 20 to rotate, so that the desulfurization liquid is atomized and sprayed in a rotating spray form, covering a larger area of ​​the upper part of the tower body 1.

[0036] Furthermore, a cover 21 is fixedly connected to the lower part of the liquid inlet pipe 5, and the nozzle 20 penetrates the cover 21.

[0037] In the specific implementation process, it is worth noting that the cover 21 is made of 304 stainless steel. The cover 21 covers the gear 18 and the gear ring 19, thereby protecting the gear 18 and the gear ring 19.

[0038] 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 continuous carbon dioxide desulfurization device comprising a tower body (1), characterized in that: The lower part of the inner wall of the tower body (1) is connected to an air inlet pipe (2), the lower part of the air inlet pipe (2) is connected to an air outlet pipe (16), the upper part of the inner wall of the tower body (1) is connected to a liquid inlet pipe (5), a nozzle (20) is provided below the liquid inlet pipe (5), and an adjustment mechanism is provided inside the air inlet pipe (2). The adjustment mechanism includes a crossbar (11), a sealing ring (12), a vertical plate (13), a round rod (14), and a guide column (15). There are six crossbars (11). One crossbar (11) passes through the air intake pipe (2) and is movably connected to the air intake pipe (2). A sealing ring (12) is fixed to the side wall of the air intake pipe (2). The inner wall of the sealing ring (12) is attached to the outer wall of one crossbar (11). A vertical plate (13) is fixed to the end of one crossbar (11). There are six vertical plates (13). Two adjacent vertical plates (13) are fixedly connected by crossbars (11). A round rod (14) is slidably connected to the front of the vertical plate (13). A guide column (15) is fixed to the back of the round rod (14). The guide column (15) is rotatably connected to the inner wall of the air outlet pipe (16) by a pin.

2. The continuous CO2 desulfurization device according to claim 1, characterized in that: The side wall of the tower body (1) is fixed with an empty box (8), and the inner wall of the empty box (8) is fixed with an electric telescopic rod (9) by bolts. The output end of the electric telescopic rod (9) is fixed with a column (10) by bolts. The column (10) passes through the empty box (8) and is movably connected to the empty box (8). The lower side wall of the column (10) is fixed to the beginning of a crossbar (11).

3. The continuous carbon dioxide desulfurization device according to claim 1, characterized in that: The inner wall of the tower body (1) is fixed with connecting lugs (22) by bolts, and the top of the connecting lugs (22) is fixed with a filling layer (6).

4. The continuous CO2 desulfurization device according to claim 1, characterized in that: The top and bottom of the tower body (1) are respectively connected to an exhaust pipe (3) and a sewage pipe (4), and a support leg (7) is fixedly connected to the bottom of the tower body (1).

5. The continuous CO2 desulfurization device according to claim 1, characterized in that: The inlet pipe (5) is equipped with a rotating mechanism, which has five sets; The rotating mechanism includes an impeller (17), a gear (18), and a gear ring (19). Both ends of the impeller (17) are rotatably connected to the inner wall of the inlet pipe (5) through sealed bearings, and one end extends to the outside of the inlet pipe (5). A gear (18) is fixedly connected to one end of the impeller (17), and a gear ring (19) is meshed with the side wall of the gear (18). The gear ring (19) is fixedly connected to the outer wall of the nozzle (20), and the upper part of the outer wall of the nozzle (20) is rotatably connected to the lower part of the inner wall of the inlet pipe (5) through a sealed bearing.

6. The continuous CO2 desulfurization device according to claim 1, characterized in that: A cover (21) is fixedly attached to the lower part of the liquid inlet pipe (5), and the nozzle (20) penetrates the cover (21).

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