Rectifying tower for purifying carbon dioxide

Abstract

The utility model belongs to the technical field of carbon dioxide purification, and particularly relates to a rectifying tower for purifying carbon dioxide, which comprises a rectifying tower and a liquid storage tank, the liquid storage tank is placed on the left side of the rectifying tower, and a purifying device is arranged in the rectifying tower. According to the rectifying tower for purifying the carbon dioxide, liquid is input into the rectifying tower through a liquid inlet pipe, and when the liquid flows into a connecting pipe, impact force generated by flowing-out of the liquid drives the connecting pipe to rotate in a rotating bearing, so that a cross-shaped pipe and an annular pipe at the bottom of the connecting pipe are driven to rotate, and a shower head is driven to rotate; the liquid sprayed by the shower head is more uniform, impurities such as sulfur in gas are adsorbed and purified through the activated carbon plate, the carbon dioxide purification efficiency is improved, and the adsorption effect of the activated carbon plate has a saturation value, so that after purification is completed, the electric heating rod is started to heat the activated carbon plate for high-temperature desulfurization, and the purification efficiency is improved. The service life of the activated carbon plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide purification, and specifically relates to a rectification column for purifying carbon dioxide. Background Technique

[0002] A rectification column is a tower-type vapor-liquid contact device for rectification. Utilizing the property that each component in the mixture has different volatilities, that is, the vapor pressures of each component are different at the same temperature, the light components (low-boiling substances) in the liquid phase are transferred to the gas phase, while the heavy components (high-boiling substances) in the gas phase are transferred to the liquid phase, so as to achieve the purpose of separation. At present, due to the uneven distribution of gas and liquid in the tower body of the existing rectification column for carbon dioxide purification, the rectification effect is poor.

[0003] As disclosed in a rectification column for carbon dioxide purification with the Chinese patent publication number CN210813987U, when in use, the user connects with the control device through the wiring hole. By starting the motor, the motor drives the connector to rotate, the connector drives the transmission belt to rotate, the transmission belt drives the runner to rotate, the runner drives the shunt pipe to rotate, and the shunt pipe drives the spray head to rotate. Liquid is added through the liquid inlet pipe and sprayed through the spray head, which is convenient for uniform distribution in the tower body, increasing the rectification effect. It is cooled by the condenser, drained by the condensation plate, and is convenient for collection through the cooperation of the condensation plate and the funnel. It is transported through the collection pipe. The vaporized substances are filtered by the activated carbon layer provided in the filling area to improve the purity of the rectification materials. Through the equalizing plate provided at the upper end of the air inlet pipe, the gas enters the tower body evenly, improving the rectification effect.

[0004] However, for the rectification column for carbon dioxide purification in the above application, it drives the runner to rotate through the transmission belt, and then drives the spray head to rotate and spray. Therefore, through holes need to be opened outside the rectification column to facilitate the operation of the transmission belt, which may cause gas leakage and affect carbon dioxide purification.

[0005] Therefore, we urgently need to provide a rectification column for purifying carbon dioxide. Content of the Utility Model

[0006] The purpose of the utility model is to provide a rectification column for purifying carbon dioxide, so as to solve the problem that in the rectification column for carbon dioxide purification mentioned in the above background technique, it drives the runner to rotate through the transmission belt, and then drives the spray head to rotate and spray. Therefore, through holes need to be opened outside the rectification column to facilitate the operation of the transmission belt, which may cause gas leakage and affect carbon dioxide purification.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A rectification column for purifying carbon dioxide, including a rectification column and a liquid storage tank. The liquid storage tank is placed on the left side of the rectification column, and a purification device is arranged inside the rectification column.

[0008] The purification device includes a spraying unit and an air inlet unit.

[0009] The spraying unit includes a liquid inlet pipe, a rotating bearing, a connecting pipe, and a spraying assembly. The liquid inlet pipe is fixedly connected above the right side of the rectification column. The rotating bearing is installed inside the bottom of the liquid inlet pipe. The connecting pipe is rotatably connected inside the rotating bearing. The spraying assembly is installed at the bottom of the connecting pipe.

[0010] Furthermore, the spraying assembly includes an annular pipe, a cross pipe, and a shower head. The annular pipe is installed outside the connecting pipe. The cross pipe is fixedly connected to the bottom of the connecting pipe and is communicated with the annular pipe. A plurality of the shower heads are fixedly connected to the bottom of the annular pipe in a ring shape. The liquid is input into the rectification column through the liquid inlet pipe. When the liquid flows into the connecting pipe, the impact force of its outflow drives the connecting pipe to rotate inside the rotating bearing, thereby driving the cross pipe and the annular pipe at the bottom of the connecting pipe to rotate, and then driving the shower heads to rotate, making the liquid sprayed through the shower heads more uniform.

[0011] Furthermore, the air inlet unit includes an air inlet pipe, a top rod, and a gas equalizing plate. The air inlet pipe is fixedly connected below the outer surface of the right side of the rectification column. Two top rods are respectively fixedly connected to the top of the air inlet pipe. The gas equalizing plate is fixedly connected to the top of the top rod, and air permeation holes are uniformly formed through its upper surface. The gas is input into the rectification column through the air inlet pipe. The gas impacts the gas equalizing plate and uniformly floats out through the air permeation holes formed on the gas equalizing plate, making the gas contact the liquid more uniformly and improving the purification effect.

[0012] Furthermore, an activated carbon plate is installed in the middle of the rectification column. An installation groove is formed inside the activated carbon plate. An electric heating rod is installed inside the installation groove. Through holes are uniformly formed through the upper surface of the activated carbon plate. The activated carbon plate is used to adsorb and purify impurities such as sulfur in the gas, improving the efficiency of carbon dioxide purification. However, the adsorption effect of the activated carbon plate itself has a saturation value. Therefore, after the purification is completed, the electric heating rod is started to heat the activated carbon plate for high-temperature desulfurization to improve the service life of the activated carbon plate.

[0013] Furthermore, an exhaust pipe is fixedly connected to the top of the back surface of the rectification column, and a drain pipe is fixedly connected to the bottom of the back surface of the rectification column. Electrically operated sealing valves are respectively installed on the outer surfaces of the exhaust pipe and the drain pipe. During high-temperature desulfurization, the electrically operated sealing valve on the exhaust pipe is opened, and the waste gas can be discharged through the exhaust pipe. When waste liquid accumulates at the bottom of the rectification column, the electrically operated sealing valve on the drain pipe is started to discharge the waste liquid.

[0014] Further improvement lies in that a condensing pipe is fixedly connected to the top of the rectifying column. A condenser is installed at the left end of the condensing pipe. A liquid delivery pipe is fixedly connected to the bottom of the condenser. The bottom of the liquid delivery pipe communicates with a liquid storage tank. The purified gas is discharged into the interior of the condenser through the condensing pipe for condensation and is input into the interior of the liquid storage tank through the liquid delivery pipe for storage.

[0015] Further improvement lies in that an observation window is installed on the front of the liquid storage tank. The observation window is made of transparent explosion-proof toughened glass. Through the liquid storage tank, the liquid collection situation inside the liquid storage tank can be observed in real time, which is convenient for timely replacement of the liquid storage tank.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. For the rectifying column for purifying carbon dioxide, the liquid is input into the interior of the rectifying column through the liquid inlet pipe. When the liquid flows into the interior of the connecting pipe, the outflow impact force drives the connecting pipe to rotate inside the rotating bearing, thereby driving the cross pipe and the annular pipe at the bottom of the connecting pipe to rotate, and then driving the shower head to rotate, making the liquid sprayed through the shower head more uniform.

[0018] 2. For the rectifying column for purifying carbon dioxide, the gas is input into the interior of the rectifying column through the gas inlet pipe. The gas impacts the gas equalizing plate and uniformly floats out through the ventilation holes opened on the gas equalizing plate, making the gas contact the liquid more uniformly and improving the purification effect.

[0019] 3. For the rectifying column for purifying carbon dioxide, the activated carbon plate is used to adsorb and purify impurities such as sulfur in the gas, improving the efficiency of carbon dioxide purification. Since the adsorption effect of the activated carbon plate itself has a saturation value, after the purification is completed, the electric heating rod is started to heat the activated carbon plate for high-temperature desulfurization, improving the service life of the activated carbon plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view structural schematic diagram of the present utility model;

[0021] Figure 2 is the side view sectional internal structural schematic diagram of the rectifying column of the present utility model;

[0022] Figure 3 is the independent split structural schematic diagram of the spraying unit of the present utility model;

[0023] Figure 4 is the independent upward view structural schematic diagram of the air inlet unit of the present utility model;

[0024] Figure 5 is the top view cross-sectional structural schematic diagram of the activated carbon plate of the present utility model.

[0025] In the figure: 1, rectifying column; 2, liquid storage tank; 301, liquid inlet pipe; 302, rotating bearing; 303, connecting pipe; 304, spraying assembly; 3041, annular pipe; 3042, cross pipe; 3043, shower head; 305, gas inlet pipe; 306, ejector rod; 307, gas equalizing plate; 308, activated carbon plate; 309, electric heating rod; 310, exhaust pipe; 311, drain pipe; 312, electric sealing valve; 401, condenser pipe; 402, condenser; 403, liquid delivery pipe; 5, observation window. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 5 , the present invention provides a technical solution:

[0028] Embodiment 1:

[0029] A rectifying column for purifying carbon dioxide includes a rectifying column 1 and a liquid storage tank 2. The liquid storage tank 2 is placed on the left side of the rectifying column 1, and a purification device is arranged inside the rectifying column 1.

[0030] The purification device includes a spraying unit and an air inlet unit.

[0031] The spraying unit includes a liquid inlet pipe 301, a rotating bearing 302, a connecting pipe 303, and a spraying assembly 304. The liquid inlet pipe 301 is fixedly connected to the upper right side of the rectifying column 1. The rotating bearing 302 is installed inside the bottom of the liquid inlet pipe 301. The connecting pipe 303 is rotatably connected inside the rotating bearing 302. The spraying assembly 304 is installed at the bottom of the connecting pipe 303.

[0032] The spraying assembly 304 includes an annular pipe 3041, a cross pipe 3042, and a shower head 3043. The annular pipe 3041 is installed outside the connecting pipe 303. The cross pipe 3042 is fixedly connected to the bottom of the connecting pipe 303 and communicates with the annular pipe 3041. A plurality of shower heads 3043 are fixedly connected to the bottom of the annular pipe 3041 in a ring shape. The liquid is input into the rectifying column 1 through the liquid inlet pipe 301. When the liquid flows into the connecting pipe 303, the impact force of its outflow drives the connecting pipe 303 to rotate inside the rotating bearing 302, thereby driving the cross pipe 3042 and the annular pipe 3041 at the bottom of the connecting pipe 303 to rotate, and thus driving the shower head 3043 to rotate, making the liquid sprayed through the shower head 3043 more uniform.

[0033] The intake unit includes an intake pipe 305, a push rod 306, and a gas equalizing plate 307. The intake pipe 305 is fixedly connected to the lower part of the outer surface on the right side of the rectification tower 1. Two push rods 306 are respectively fixedly connected to the top of the intake pipe 305. The gas equalizing plate 307 is fixedly connected to the top of the push rod 306, and air permeation holes are uniformly formed through its upper surface. The gas is input into the rectification tower 1 through the intake pipe 305. The gas impacts the gas equalizing plate 307 and uniformly floats out through the air permeation holes formed in the gas equalizing plate 307, enabling the gas to come into contact with the liquid more uniformly and improving the purification effect.

[0034] An exhaust pipe 310 is fixedly connected to the top of the back surface of the rectification tower 1, and a liquid discharge pipe 311 is fixedly connected to the bottom of the back surface of the rectification tower 1. Electrically operated sealing valves 312 are respectively installed on the outer surfaces of the exhaust pipe 310 and the liquid discharge pipe 311. During high-temperature desulfurization, the electrically operated sealing valve 312 on the exhaust pipe 310 is opened, and the waste gas can be discharged through the exhaust pipe 310. When waste liquid accumulates at the bottom of the rectification tower 1, the electrically operated sealing valve 312 on the liquid discharge pipe 311 is started to discharge the waste liquid.

[0035] A condensing pipe 401 is fixedly connected to the top of the rectification tower 1. A condenser 402 is installed at the left end of the condensing pipe 401. A liquid delivery pipe 403 is fixedly connected to the bottom of the condenser 402. The bottom of the liquid delivery pipe 403 communicates with the liquid storage tank 2. The purified gas is discharged into the condenser 402 through the condensing pipe 401 for condensation and is input into the liquid storage tank 2 through the liquid delivery pipe 403 for storage.

[0036] An observation window 5 is installed on the front surface of the liquid storage tank 2. The observation window 5 is made of transparent explosion-proof tempered glass. The internal liquid collection situation of the liquid storage tank 2 can be observed in real time through the liquid storage tank 2, which is convenient for timely replacement of the liquid storage tank 2.

[0037] Embodiment Two:

[0038] On the basis of Embodiment One, an activated carbon plate 308 is installed in the middle of the rectification tower 1. An installation groove is formed inside the activated carbon plate 308, and an electric heating rod 309 is installed inside the installation groove. Through holes are uniformly formed through the upper surface of the activated carbon plate 308.

[0039] The activated carbon plate 308 is used to adsorb and purify impurities such as sulfur in the gas, improving the efficiency of carbon dioxide purification. However, the adsorption effect of the activated carbon plate 308 itself has a saturation value. Therefore, after the purification is completed, the electric heating rod 309 is started to heat the activated carbon plate 308 for high-temperature desulfurization, improving the service life of the activated carbon plate 308.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A distillation tower for purifying carbon dioxide, comprising a distillation tower (1) and a liquid storage tank (2), wherein the liquid storage tank (2) is placed on the left side of the distillation tower (1), characterized in that: The distillation tower (1) is provided with a purification device inside; The purification device comprises a spraying unit and an air intake unit; The spray unit comprises a liquid inlet pipe (301), a rotating bearing (302), a connecting pipe (303), and a spray assembly (304); the liquid inlet pipe (301) is fixedly connected to the upper right side of the distillation tower (1); the rotating bearing (302) is installed inside the bottom of the liquid inlet pipe (301); the connecting pipe (303) is rotatably connected to the inside of the rotating bearing (302); and the spray assembly (304) is installed at the bottom of the connecting pipe (303).

2. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: The spray assembly (304) comprises an annular tube (3041), a cross tube (3042), and a shower head (3043); the annular tube (3041) is installed on the outside of the connecting tube (303); the cross tube (3042) is fixedly connected to the bottom of the connecting tube (303) and communicates with the annular tube (3041); and a plurality of shower heads (3043) are fixedly connected to the bottom of the annular tube (3041) in an annular shape.

3. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: The air intake unit comprises an air intake pipe (305), a top rod (306), and a gas distribution plate (307); the air intake pipe (305) is fixedly connected to the lower side of the right outer surface of the distillation tower (1); the two top rods (306) are respectively fixedly connected to the top of the air intake pipe (305); the gas distribution plate (307) is fixedly connected to the top of the top rod (306), and air holes are evenly opened on its upper surface.

4. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: An activated carbon plate (308) is installed in the middle of the distillation tower (1), a mounting groove is provided inside the activated carbon plate (308), an electric heating rod (309) is installed inside the mounting groove, and through holes are evenly penetrated through the upper surface of the activated carbon plate (308).

5. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: An exhaust pipe (310) is fixedly connected to the top of the back side of the distillation tower (1), and a liquid discharge pipe (311) is fixedly connected to the bottom of the back side of the distillation tower (1). Electric sealing valves (312) are respectively installed on the outer surfaces of the exhaust pipe (310) and the liquid discharge pipe (311).

6. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: A condenser (401) is fixedly connected to the top of the distillation tower (1), a condenser (402) is installed at the left end of the condenser (401), a liquid infusion tube (403) is fixedly connected to the bottom of the condenser (402), and the bottom of the liquid infusion tube (403) is in communication with the liquid storage tank (2).

7. A distillation tower for purifying carbon dioxide according to claim 1, characterized in that: An observation window (5) is installed on the front of the liquid storage tank (2), and the material of the observation window (5) is made of transparent explosion-proof tempered glass.

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