A device for adsorbing carbon dioxide using calcium hydroxide.

Abstract

This utility model discloses a device for adsorbing carbon dioxide using calcium hydroxide, comprising a tank, a third connecting pipe connected to the bottom of the tank, a second connecting pipe connected to the side of the tank, a top cover fixed to the top of the tank, and a first connecting pipe fixed to the top of the top cover. The first connecting pipe is connected to the interior of the tank. A shell is fixed to the top of the top cover. A bottom pipe is rotatably disposed inside the top cover. An aeration spiral assembly is fixedly disposed on the bottom pipe. A rotating joint is connected to the top of the bottom pipe. A power assembly for rotating the bottom pipe is disposed inside the shell. After the bottom pipe rotates, it drives the spiral rod to rotate via a connecting rod, thereby achieving aeration during stirring and improving the mixing effect of waste gas and calcium hydroxide solution.

Description

Technical Field

[0001] This utility model relates to the technical field of calcium hydroxide adsorption carbon dioxide equipment, specifically a device that uses calcium hydroxide to adsorb carbon dioxide. Background Technology

[0002] In existing devices, the introduction of carbon dioxide into the calcium hydroxide solution lacks effective stirring, relying solely on natural gas diffusion. This results in low reaction efficiency, uneven gas-liquid contact, and rapid decline in adsorption capacity due to localized solution saturation. Extensive research has been conducted to address these issues. Utility Model Content

[0003] The technical problem to be solved by this invention is to provide a device for adsorbing carbon dioxide using calcium hydroxide, which can solve the problems in the prior art.

[0004] This utility model is achieved through the following technical solution: A device for adsorbing carbon dioxide using calcium hydroxide includes a tank. A third connecting pipe is connected to the bottom of the tank, and a second connecting pipe is connected to the side of the tank. A top cover is fixed to the top of the tank, and a first connecting pipe is fixed to the top of the top cover. The first connecting pipe communicates with the interior of the tank. A shell is fixed to the top of the top cover. A bottom pipe is rotatably disposed inside the top cover. An aeration spiral assembly is fixedly disposed on the bottom pipe. A rotating joint is connected to the top of the bottom pipe. A power assembly for driving the bottom pipe to rotate is disposed inside the shell.

[0005] In a further technical solution, an electric valve is also installed between the tank body and the third connecting pipe.

[0006] A further technical solution includes an aeration spiral assembly comprising multiple connecting rods fixed around the bottom pipe, a spiral rod provided on the outside of the bottom pipe, the spiral rod being fixedly connected to the connecting rods, and an air passage structure communicating with the inside of the bottom pipe being provided inside the connecting rod.

[0007] A further technical solution includes an air passage structure comprising a guide cavity disposed within the connecting rod, the guide cavity being connected to the interior of the bottom tube, and multiple air holes being disposed on the upper and lower sides of the guide cavity, the air holes being connected to the external space.

[0008] A further technical solution includes a driven bevel gear fixed to the outer surface of the bottom tube, a motor fixed to the outer surface of the housing, the output shaft of the motor rotatably extending into the housing, a driving bevel gear fixed on the output shaft of the motor, and the driving bevel gear meshing with the driven bevel gear.

[0009] In a further technical solution, the bottom tube is rotatably inserted into the housing, and a sealing ring is provided between the outer surface of the bottom tube and the inner wall of the housing.

[0010] The beneficial effects of this utility model are as follows: First, after the motor is working, it drives the active bevel gear to rotate. Since the active bevel gear and the driven bevel gear are meshed, the driven bevel gear and the bottom tube can be driven to rotate. After the bottom tube rotates, it can drive the screw rod to rotate through the connecting rod, so as to realize aeration during the stirring process, improve the mixing effect of waste gas and calcium hydroxide solution, and thus improve the mixing effect of carbon dioxide gas and calcium hydroxide solution in waste gas.

[0011] Second, since the rotating end of the rotary joint is fixedly connected to the bottom pipe, and the fixed end of the rotary joint is rotatably connected to the rotating end of the rotary joint, the rotation of the bottom pipe will not affect the introduction of gas after the fixed end of the rotary joint is connected to the input one-way valve. Furthermore, the bottom pipe, the rotating end of the rotary joint, and the fixed end of the rotary joint are isolated from the housing. The driven bevel gear and the driving bevel gear are located inside the housing, and the top of the housing is detachable (e.g., bolted). This makes it convenient for personnel to apply grease to the driven bevel gear and the driving bevel gear to ensure stable operation. Attached Figure Description

[0012] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of a device for adsorbing carbon dioxide using calcium hydroxide according to this utility model. Figure 2 for Figure 1 A schematic diagram of the internal structure of the device after the tank body has been removed; Figure 3 for Figure 2 A schematic diagram of the structure of the device from below; Figure 4 for Figure 1 A cross-sectional view of the device in the middle; Figure 5 for Figure 4 A schematic diagram at point A in the middle; Figure 6 for Figure 4 A schematic diagram at point B in the middle; Figure 7 for Figure 1 Diagram of piping connections for the intermediate device; In the figure, the components are: top cover 11, motor 12, housing 14, first connecting pipe 15, second connecting pipe 16, tank body 17, third connecting pipe 18, electric valve 19, bottom pipe 21, spiral rod 22, air hole 23, connecting rod 24, driving bevel gear 31, fixed end of rotary joint 32, rotating end of rotary joint 33, driven bevel gear 35, sealing ring 36, and guide cavity 41. Detailed Implementation

[0014] like Figures 1-7 As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationships are consistent in all directions (up, down, left, right, front, back). This utility model discloses a device for adsorbing carbon dioxide using calcium hydroxide, comprising a tank 17, a third connecting pipe 18 connected to the bottom of the tank 17, a second connecting pipe 16 connected to the side of the tank 17, a top cover 11 fixed to the top of the tank 17, a first connecting pipe 15 fixed to the top of the top cover 11, the first connecting pipe 15 communicating with the interior of the tank 17, a shell 14 fixed to the top of the top cover 11, a bottom pipe 21 rotatably disposed inside the top cover 11, an aeration spiral assembly fixedly disposed on the bottom pipe 21, a rotating joint connected to the top of the bottom pipe 21, and a power assembly for driving the bottom pipe 21 to rotate inside the shell 14. The power assembly drives the bottom pipe 21 and the aeration spiral assembly to rotate, so that carbon dioxide-containing waste gas is discharged into the calcium hydroxide solution during the rotation of the aeration spiral assembly.

[0015] Advantageously, the rotary joint includes a rotary joint rotating end 33, and a rotary joint fixed end 32 is rotatably provided inside the rotary joint rotating end 33. The rotary joint fixed end 32 is used to communicate with the input check valve. The rotary joint rotating end 33 is fixedly connected to the bottom pipe 21. The rotary joint fixed end 32 and the rotary joint rotating end 33 are connected and can transmit the medium when rotating.

[0016] Advantageously, an electric valve 19 is also connected between the tank body 17 and the third connecting pipe 18, and the electric valve 19 is used to control the discharge.

[0017] Advantageously, it also includes an air inlet pipe, the outlet side of which is connected to a gas filter to filter impurities in the gas. The outlet side of the gas filter is connected to an input check valve, which is connected to a rotary joint. Waste gas with carbon dioxide as the main component is introduced into the air inlet pipe, and after passing through the gas filter and the input check valve, it enters the rotary joint and is input from the rotary joint to the bottom pipe 21, and then diffuses from the aeration spiral assembly into the tank 17.

[0018] The gas filter connected to the air outlet side of the air inlet pipe uses a composite filter element of activated carbon and glass fiber, which can effectively remove impurities such as dust and oil in the exhaust gas and prevent the air pores 23 from becoming clogged.

[0019] Advantageously, it also includes an inlet pipe connected to the second connecting pipe 16, through which calcium hydroxide solution is introduced, so that the tank 17 is filled with calcium hydroxide solution and mixed with the waste gas. The outlet end of the third connecting pipe 18 is connected to an outlet pipe for discharging the calcium hydroxide and calcium carbonate mixture after adsorbing carbon dioxide.

[0020] Advantageously, the first connecting pipe 15 is connected to an output check valve at its outlet end, and the outlet end of the output check valve is connected to an outlet pipe. After the carbon dioxide and other acidic substances are adsorbed by the calcium hydroxide solution in the tank 17, the gas is discharged from the first connecting pipe 15, the output check valve and the outlet pipe.

[0021] Advantageously, the aeration spiral assembly includes multiple connecting rods 24 fixed around the bottom pipe 21, and a spiral rod 22 is also provided on the outside of the bottom pipe 21. The spiral rod 22 is fixedly connected to the connecting rods 24, and an air passage structure communicating with the inside of the bottom pipe 21 is provided inside the connecting rod 24.

[0022] Advantageously, the airway structure includes a guide cavity 41 disposed in the connecting rod 24, the guide cavity 41 being connected to the interior of the bottom tube 21, and a plurality of air holes 23 being disposed on the upper and lower sides of the guide cavity 41, the air holes 23 being connected to the external space.

[0023] Advantageously, the power assembly includes a driven bevel gear 35 fixed to the outer surface of the bottom tube 21, a motor 12 fixed to the outer surface of the housing 14, the output shaft of the motor 12 extending rotatably into the housing 14, and a driving bevel gear 31 fixed on the output shaft of the motor 12, the driving bevel gear 31 meshing with the driven bevel gear 35.

[0024] Advantageously, the bottom tube 21 is rotatably inserted into the housing 14, and a sealing ring 36 is provided between the outer surface of the bottom tube 21 and the inner wall of the housing 14.

[0025] When the device is in operation, the fixed end 32 of the rotary joint is connected to the input check valve. Waste gas is introduced through the inlet pipe, gas filter, and input check valve, and then enters through the fixed end 32 of the rotary joint. After passing through the bottom pipe 21 and the aeration spiral assembly, calcium hydroxide solution is introduced into the tank 17 through the liquid inlet pipe. After the liquid level of calcium hydroxide solution in the tank 17 reaches 2 / 3 of the tank volume (preset liquid level), the liquid inlet pipe valve is closed. The power unit is started to make the aeration spiral assembly rotate, so that aeration and stirring are carried out simultaneously. The carbon dioxide in the waste gas mixes with the calcium hydroxide solution and is adsorbed. Then the treated gas is discharged from the tank 17 through the first connecting pipe 15, the output check valve, and the outlet pipe.

[0026] After the calcium hydroxide solution in tank 17 is saturated with adsorption, the input check valve is closed, and then the electric valve 19 is opened to discharge the mixture in tank 17 through the third connecting pipe 18 and the outlet pipe. Then the electric valve 19 is closed again, the inlet pipe valve is opened, and calcium hydroxide solution is injected into tank 17 from the second connecting pipe 16. Then the input check valve is opened again to continue to introduce waste gas from the fixed end 32 of the rotary joint and the bottom pipe 21.

[0027] After the motor 12 starts working, it drives the active bevel gear 31 to rotate. Since the active bevel gear 31 is meshed with the driven bevel gear 35, it can drive the driven bevel gear 35 and the bottom tube 21 to rotate. After the bottom tube 21 rotates, it can drive the screw rod 22 to rotate through the connecting rod 24, so as to realize aeration during the stirring process, improve the mixing effect of waste gas and calcium hydroxide solution. Aeration and stirring are carried out simultaneously, so that carbon dioxide bubbles are evenly dispersed in the solution. The gas-liquid contact area is increased compared with traditional devices, the carbon dioxide absorption rate is improved, and the adsorption efficiency is significantly improved.

[0028] Since the rotating end 33 of the rotary joint is fixedly connected to the bottom pipe 21, and the fixed end 32 of the rotary joint is rotatably connected to the rotating end 33 of the rotary joint, the rotation of the bottom pipe 21 will not affect the introduction of gas after the fixed end 32 of the rotary joint is connected to the input check valve. This is the advantage of the rotary joint.

[0029] The tank body 17 is made of 316L stainless steel, which is resistant to corrosion by calcium hydroxide solution; the bottom pipe 21 and the spiral rod 22 are made of duplex stainless steel; and the sealing ring 36 is made of fluororubber.

[0030] A liquid level sensor can also be installed on the side wall of tank 17. A pH sensor (which monitors the solution pH value in real time and triggers an alarm when pH ≤ 10 to prompt for solution replacement) and a PLC controller can also be installed. The PLC controller is electrically connected to the electrical components of this device.

[0031] The motor 12 is a high-efficiency and energy-saving motor with parameters of power 0.75-1.5kW and speed 1450r / min. The speed of the bottom tube 21 is reduced to 30-50r / min through bevel gear reduction. The staggered distribution design of the air holes 23 extends the gas residence time and further improves the adsorption efficiency.

[0032] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without creative effort should be included within the protection scope of this utility model; therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A device for absorbing carbon dioxide by calcium hydroxide, comprising a tank body (17), a third connecting pipe (18) is arranged in communication with the bottom of the tank body (17), a second connecting pipe (16) is arranged in communication with the side of the tank body (17), a top cover (11) is fixed on the top of the tank body (17), and a first connecting pipe (15) is fixed on the top of the top cover (11), characterized in that, The first connecting pipe (15) is communicated with the inside of the tank body (17), the top of the top cover (11) is fixedly provided with a shell (14), the bottom pipe (21) rotatingly arranged in the top cover (11) is provided with an aeration spiral assembly fixedly arranged on the bottom pipe (21), a rotating joint is connected to the top of the bottom pipe (21), and the shell (14) is provided with a power assembly driving the bottom pipe (21) to rotate.

2. The device for absorbing carbon dioxide by using calcium hydroxide according to claim 1, characterized in that: An electric valve (19) is further arranged between the tank body (17) and the third connecting pipe (18).

3. The device for absorbing carbon dioxide by using calcium hydroxide according to claim 1, characterized in that: The aeration spiral assembly comprises a plurality of connecting rods (24) fixed around the bottom pipe (21), the outer side of the bottom pipe (21) is further provided with a spiral rod (22), the spiral rod (22) is fixedly and matchingly connected with the connecting rod (24), and the connecting rod (24) is provided with an air channel structure communicated with the inside of the bottom pipe (21).

4. The device for absorbing carbon dioxide using calcium hydroxide according to claim 3, characterized in that: The air channel structure comprises a guide cavity (41) arranged in the connecting rod (24), the guide cavity (41) is communicated with the inside of the bottom pipe (21), a plurality of air holes (23) are arranged on the upper and lower sides of the guide cavity (41) and communicated with the outside space.

5. The device for absorbing carbon dioxide using calcium hydroxide according to claim 1, wherein: The power assembly comprises a driven bevel gear (35) fixed to the outer surface of the bottom pipe (21), the shell (14) is fixedly provided with a motor (12), the output shaft of the motor (12) is rotatably arranged in the shell (14), the output shaft of the motor (12) is fixedly provided with a driving bevel gear (31), and the driving bevel gear (31) is meshingly arranged with the driven bevel gear (35).

6. The device for absorbing carbon dioxide using calcium hydroxide according to claim 5, wherein: The bottom pipe (21) is rotatably arranged in the shell (14), and a sealing ring (36) is arranged between the outer surface of the bottom pipe (21) and the inner wall of the shell (14).

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