Decarburization device and carbon dioxide treatment system

Abstract

The invention discloses a decarburization device and a carbon dioxide treatment system.The decarburization device comprises a rotational flow assembly and a jet flow assembly, the rotational flow assembly comprises a rotational flow cylinder and a jacketed pipe, the jacketed pipe is vertically arranged on the inner side of the rotational flow cylinder and forms an overflow runner in an enclosing mode, and a rotational flow runner is formed between the rotational flow cylinder and the jacketed pipe; the lower end of the overflow runner is communicated with the rotational flow runner, the upper end of the overflow runner is guided to the outside of the rotational flow cylinder, the rotational flow cylinder is provided with a tangential gas inlet for decarburization gas to enter the rotational flow runner, and a plurality of jet flow holes are formed in the position, opposite to the jacketed pipe, of the rotational flow cylinder at intervals; the jet flow assembly comprises a jet flow barrel which is arranged on the rotational flow barrel in a sleeving mode and covers the outer sides of the jet flow holes, the jet flow barrel is used for being connected with a liquid supply device for spraying the decarburization solvent, the decarburization solvent forms liquid drops through the jet flow holes and is further atomized under rotational flow impact of decarburization gas, and therefore the contact area of the decarburization solvent and the decarburization gas is enlarged, and the decarburization effect is improved. The absorption efficiency of carbon dioxide is obviously improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon dioxide absorption, and in particular relates to a decarbonization device and a carbon dioxide treatment system. Background Art

[0002] Carbon dioxide capture is an important approach to achieving clean, low-carbon utilization of fossil fuels. To reduce greenhouse gas emissions like carbon dioxide, amine decarbonizers are widely used in industrial waste gas treatment. Traditional coal-fired power plants typically use chemical absorption as a post-combustion capture process due to their low flue gas pressure and low carbon dioxide concentration. However, the absorption of low-concentration carbon dioxide by alkaline solvents is affected by mass transfer rates. Consequently, traditional carbon dioxide absorption equipment, such as plate towers, bubble towers, and packed towers, suffers from bulky equipment, long gas-liquid contact times, and low mass transfer efficiency, resulting in high energy consumption and investment costs for carbon capture. Summary of the Invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a decarbonization device and a carbon dioxide treatment system, aiming to solve the technical problem of high energy consumption in carbon dioxide capture in the prior art.

[0004] To achieve the above-mentioned objectives, the present invention provides a decarbonization device and a carbon dioxide treatment system, wherein the decarbonization device includes a swirl assembly and a jet assembly, the swirl assembly includes a swirl cylinder and a jacketed tube, the jacketed tube is vertically arranged on the inner side of the swirl cylinder and encloses an overflow channel, a swirl channel is formed between the swirl cylinder and the jacketed tube, the lower end of the overflow channel is connected to the swirl channel, the upper end of the overflow channel extends out of the top of the swirl cylinder, a tangential air inlet is provided on the swirl cylinder for supplying decarbonization gas into the swirl channel, and the swirl cylinder is also provided with a plurality of jet holes at a position opposite to the jacketed tube, the jet assembly includes a jet cylinder sleeved on the swirl cylinder and covered on the outside of the plurality of jet holes, the jet cylinder is used to be connected to a liquid supply device for spraying decarbonization solvent.

[0005] In an embodiment of the present invention, the cyclone includes an air inlet portion and a cyclone portion arranged in sequence from top to bottom, a tangential air inlet is formed on the air inlet portion, a plurality of jet holes are opened on the cyclone portion, and the lower end of the jacket tube is guided to the lower end of the cyclone portion.

[0006] In an embodiment of the present invention, the swirl cylinder also includes a confluence portion arranged at the lower end of the swirl portion, the confluence portion encloses a confluence flow channel connected to the overflow flow channel, the confluence flow channel is arranged in a tapered manner back to the overflow flow channel, and the lower end of the confluence flow channel is open.

[0007] In an embodiment of the present invention, an air pipe connecting portion forming a tangential air inlet is provided on the air inlet portion, the tangential air inlet is located on one side of the jacket tube, and the tangential air inlet is arranged tangentially to the inner circumferential wall of the air inlet portion on the first inner wall side away from the jacket tube, and the extended surface of the tangential air inlet close to the second inner wall side of the jacket tube is arranged tangentially to the outer wall of the jacket tube, the jet tube is arranged on the swirl portion, and the upper end surface of the jet tube supports the air pipe connecting portion.

[0008] In an embodiment of the present invention, the lower end of the jacket tube extends downward beyond any one of the jet holes.

[0009] In an embodiment of the present invention, a plurality of jet holes are arranged in sequence along the circumference of the cyclone tube, and the jet assembly also includes two liquid inlet pipes, which are arranged on both sides of the jet tube opposite to each other and are used to be connected to the two liquid outlets of the liquid supply device in a one-to-one correspondence.

[0010] In an embodiment of the present invention, the jet holes are arranged to be inclined from the outside to the inside, away from the radial direction of the cyclone, and the inclined direction of the jet holes is used to face the cyclone direction of the decarburized gas.

[0011] To achieve the above objectives, the present invention further provides a carbon dioxide treatment system, which includes a gas supply device, a liquid supply device, a control device, and the above-mentioned decarbonization device. The gas supply device is used to communicate with the tangential gas inlet and provide decarbonization gas, the liquid supply device is used to communicate with the jet tube and spray the decarbonization solvent, and the control device is communicatively connected to the gas supply device and the liquid supply device, respectively, and is configured as follows:

[0012] The gas supply device and the liquid supply device are controlled to adjust the supply amount according to the preset conditions.

[0013] In an embodiment of the present invention, the carbon dioxide treatment system further includes a temperature control device, which includes a heat exchanger and a constant temperature circulation assembly. The tube side of the heat exchanger is connected to the liquid supply device and the ejector tube respectively. The constant temperature circulation assembly is communicatively connected to the control device and is used to pass heat exchange medium into the shell side of the heat exchanger. The control device is further configured as follows:

[0014] Control the constant temperature circulation component to adjust the temperature according to the preset conditions.

[0015] In an embodiment of the present invention, the carbon dioxide treatment system further includes a first concentration detector provided at the outlet of the overflow channel, the control device is in communication with the first concentration detector, and controlling the gas supply device and the liquid supply device to adjust the supply amount according to preset conditions further includes:

[0016] Controlling the gas supply device and the liquid supply device to supply according to initial preset conditions;

[0017] receiving a real-time carbon dioxide concentration detected by a first concentration detector;

[0018] When the real-time carbon dioxide concentration is higher than a preset maximum threshold, the gas supply device is controlled to reduce the gas supply amount, and / or the liquid supply device is controlled to increase the liquid supply amount.

[0019] Through the above technical solution, the decarbonization device and carbon dioxide treatment system provided by the embodiment of the present invention have the following beneficial effects:

[0020] When the above-mentioned decarbonization device is used, including a swirl component and a jet component, the decarbonization gas enters the swirl flow channel from the tangential air inlet, and the decarbonization gas moves spirally downward along the swirl flow channel through the enclosing effect of the jacketed tube. During the spiral movement, the liquid supply device continuously introduces the decarbonization solvent into the swirl flow channel, and the decarbonization solvent forms droplets from the jet tube through multiple jet holes. The droplets contact and collide with the spirally moving decarbonization gas, and the carbon dioxide in the decarbonization gas is absorbed by the decarbonization solvent. The jacketed tube is vertically placed on the inner side of the swirl tube and encloses an overflow flow channel. The lower end of the overflow flow channel is connected to the swirl flow channel. When the decarbonization gas passes through the lower end of the overflow flow channel along the swirl flow channel, it flows out of the swirl tube along the overflow flow channel under the action of pressure. The density of the decarbonization solvent is much greater than that of the decarbonization gas. Under the action of gravity, it converges to the bottom of the swirl tube to achieve gas-liquid separation. Since the decarbonization gas is in a high-speed swirling state, the droplets will be further atomized when the decarbonization gas hits the droplets, thereby increasing the contact area between the two and achieving the purpose of improving the carbon dioxide absorption efficiency. Compared with the traditional solution of directly introducing the decarbonization gas into the decarbonization solvent, the decarbonization device of the present invention can increase the gas-liquid contact area and duration, improve the mass transfer efficiency, and thus realize the miniaturization of the decarbonization device and reduce the cost of carbon capture.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 is a cross-sectional view of a portion of the upper structure of a decarbonization device according to one embodiment of the present invention;

[0024] Figure 2 is a perspective view of a decarburization device according to one embodiment of the present invention;

[0025] Figure 3 is an overall cross-sectional view of a decarbonization device according to one embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of a carbon dioxide treatment system according to one embodiment of the present invention;

[0027] Figure 5 is a dimensional representation of a decarburization device according to one embodiment of the present invention;

[0028] Figure 6 1 is a perspective view of a cyclone according to an embodiment of the present invention.

[0029] Description of Reference Numerals

[0030] 1 swirl assembly 11 swirl cylinder

[0031] 111 air intake section 112 swirl section

[0032] 113 confluence 114 bottom flow outlet

[0033] 115 air pipe connection 116 tangential air inlet

[0034] 117 Swirl channel 118 Jet hole

[0035] 119 confluence channel 12 jacketed tube

[0036] 121 Overflow channel 2 Jet assembly

[0037] 21 jet tube 22 liquid inlet pipe

[0038] 100 Decarbonization device 200 Gas supply device

[0039] 201 Gas supply assembly 202 Air intake control assembly

[0040] 300 Liquid supply device 400 Temperature control device

[0041] 500 Control Device DETAILED DESCRIPTION

[0042] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0043] The decarbonization device 100 and the carbon dioxide treatment system of the present invention will be described below with reference to the accompanying drawings.

[0044] like Figure 1 As shown, the present invention provides a decarbonization device 100, wherein the decarbonization device 100 includes:

[0045] The cyclone assembly 1 includes a cyclone barrel 11 and a jacketed tube 12. The jacketed tube 12 is vertically disposed inside the cyclone barrel 11 and encloses an overflow channel 121. A cyclone channel 117 is formed between the cyclone barrel 11 and the jacketed tube 12. The lower end of the overflow channel 121 communicates with the cyclone channel 117, and the upper end of the overflow channel 121 extends from the top of the cyclone barrel 11. The cyclone barrel 11 is provided with a tangential air inlet 116 for supplying decarburized gas to the cyclone channel 117. The cyclone barrel 11 is also provided with a plurality of jet holes 118 spaced apart at a position opposite to the jacketed tube 12.

[0046] The jet assembly 2 includes a jet tube 21 which is sleeved on the cyclone tube 11 and covers the outer sides of the plurality of jet holes 118 . The jet tube 21 is used to be connected to a liquid supply device 300 for spraying the decarbonization solvent.

[0047] When the above-mentioned decarburization device 100 is used, including the swirl component 1 and the jet component 2, the decarburization gas enters the swirl flow channel 117 from the tangential air inlet 116, and is blocked by the jacket tube 12, and the decarburization gas moves spirally downward along the swirl flow channel 117. During the spiral movement, the liquid supply device 300 continuously introduces the decarburization solvent into the swirl flow channel 117, and the decarburization solvent forms droplets from the jet tube 21 through the multiple jet holes 118. The droplets come into contact with the spirally moving decarburization gas. Collision, carbon dioxide in the decarbonized gas is absorbed by the decarbonized solvent, the jacketed tube 12 is vertically placed on the inner side of the cyclone 11 and encloses an overflow channel 121, the lower end of the overflow channel 121 is connected to the cyclone channel 117, when the decarbonized gas passes through the lower end of the overflow channel 121 along the cyclone channel 117, it flows out of the cyclone 11 along the overflow channel 121 under the action of pressure, and the density of the decarbonized solvent is much greater than that of the decarbonized gas, and it converges to the bottom of the cyclone 11 under the action of gravity, realizing gas-liquid separation. Since the decarbonized gas is in a high-speed cyclone state, the decarbonized gas will further atomize the droplets when it collides with the droplets, thereby increasing the contact area between the two and achieving the purpose of improving the carbon dioxide absorption efficiency. Compared with the traditional solution of directly introducing the decarbonized gas into the decarbonized solvent, the decarbonization device 100 of the present invention can increase the gas-liquid contact area and duration, improve the mass transfer efficiency, and thus realize the miniaturization of the decarbonization device 100 and reduce the cost of carbon capture. In addition, the decarbonization device 100 has the advantages of high operational flexibility, low pressure loss, and long service life, which makes it widely applicable and reliable in industrial applications.

[0048] like Figure 2 and Figure 3As shown, in an embodiment of the present invention, the cyclone cylinder 11 includes an air inlet portion 111 and a cyclone portion 112 arranged in sequence from top to bottom, a tangential air inlet 116 is formed on the air inlet portion 111, a plurality of jet holes 118 are opened on the cyclone portion 112, and the lower end of the jacket tube 12 is guided to the lower end of the cyclone portion 112. After the decarburization gas enters the cyclone 11, it will rotate around the jacket tube 12 under the stop of the cyclone part 112, and the air inlet part 111 is arranged above the cyclone part 112. The rear gas will squeeze the front gas to move downward, so that the decarburization gas forms a cyclonic motion in the cyclone part 112 and collides with the decarburization solvent back and forth, thereby ensuring that the decarburization gas and the decarburization solvent can fully contact each other and improve the absorption efficiency of carbon dioxide; the jacket tube 12 extends to the lower end of the cyclone part 112, that is, a certain movement distance is formed between the inlet and outlet of the decarburization gas, so that the decarburization gas must pass through the decarburization area formed by multiple jet holes 118, thereby preventing the decarburization gas from directly overflowing the cyclone 11 without decarburization treatment.

[0049] Specifically, in order to ensure the stability of the cyclonic motion of the decarburization gas, a cyclonic plate spirally extending around the jacket tube 12 can be provided in the cyclonic portion 112. The inner side of the cyclonic plate is connected to the outer wall of the jacket tube 12, and the outer side of the cyclonic plate is connected to the inner wall of the cyclonic portion 112 to form a stable cyclonic flow channel 117. The decarburization gas has a unique and definite movement direction along the cyclonic flow channel 117. Even if the flow rate of the decarburization gas entering the cyclonic tube 11 is unstable, turbulence will not be formed in the cyclonic tube 11.

[0050] In an embodiment of the present invention, the swirl cylinder 11 also includes a confluence portion 113 arranged at the lower end of the swirl portion 112. The confluence portion 113 encloses a confluence channel 119 that is connected to the overflow channel 121. The confluence channel 119 is arranged in a tapered manner with its back to the overflow channel 121, and the lower end of the confluence channel 119 is open. The confluence portion 113 is used to discharge the decarbonization solvent entering the cyclone portion 112. Some of the droplets formed by the decarbonization solvent fall directly under the action of gravity, and the other part of the droplets adhere to the inner wall of the cyclone tube 11 under the action of the centrifugal force generated by the cyclonic motion of the decarbonization gas, and flow out of the cyclone tube 11 along the confluence channel 119. The confluence channel 119 is designed to be a tapered funnel shape, which is convenient for collecting the decarbonization solvent on the one hand; on the other hand, it makes the bottom outlet of the cyclone tube 11 smaller, and the decarbonization solvent converges at the bottom of the confluence channel 119, which acts as a water seal to prevent the decarbonization gas from flowing out of the confluence channel 119.

[0051] Specifically, a bottom flow port 114 of equal diameter is formed at the bottom end of the confluence portion 113 to facilitate external connection of a liquid discharge pipe.

[0052] In the embodiment of the present invention, the air inlet portion 111 is provided with an air pipe connecting portion 115 forming a tangential air inlet 116, see Figure 1The tangential air inlet 116 is located on one side of the jacket tube 12. The first inner wall of the tangential air inlet 116, which is away from the jacket tube 12, is tangentially arranged to the inner circumferential wall of the air inlet portion 111. The extended surface of the tangential air inlet 116, which is close to the second inner wall of the jacket tube 12, is tangentially arranged to the outer wall of the jacket tube 12. This allows the decarburization gas to completely swirl around the jacket tube 12 in a consistent overall direction, thus avoiding turbulence. The jet tube 21 is disposed on the swirl portion 112, and the upper end surface of the jet tube 21 carries a gas pipe connection portion 115, which is used to connect to an external gas supply device 200. (See FIG. 2 ). Figure 2 The air pipe connecting portion 115 is gradually expanded toward the tangential air inlet 116 to facilitate connection to the air inlet pipe. At the same time, the flow channel of the air pipe connecting portion 115 gradually expands, which can make the airflow more stable.

[0053] In this embodiment of the present invention, the lower end of the jacket tube 12 extends downward beyond any of the jet holes 118, allowing the decarburization gas to fully contact the decarburization solution before entering the overflow channel 121. Specifically, the lower end of the jacket tube 12 does not extend beyond the bottom surface of the swirl portion 112 to avoid generating a high pressure at the bottom of the converging channel 119 and prevent the decarburization gas from flowing out of the bottom flow port 114.

[0054] In this embodiment of the present invention, multiple jet holes 118 are sequentially spaced along the circumference of the cyclone tube 11. The jet assembly 2 also includes two liquid inlet pipes 22, which are disposed on opposite sides of the jet tube 21 and are used to connect one-to-one with the two liquid outlets of the liquid supply device 300. The multiple jet holes 118 arranged in an annular manner allow the decarburization gas to strike the liquid droplets multiple times, thereby improving the decarburization efficiency. The liquid supply device 300 introduces the decarburization solvent from opposite sides of the jet tube 21, ensuring that the jet pressure of the jet holes 118 at different positions is the same, and a good atomization effect can be achieved at different angles.

[0055] Specifically, see Figure 1 or Figure 3 The cross-sectional height of the jet tube 21 is greater than the cross-sectional height of the liquid inlet pipe 22, and a plurality of jet holes 118 are provided in the height direction, that is, a plurality of jet hole groups are formed on the swirl portion 112, each jet hole group includes a plurality of jet holes 118 arranged in sequence along the circumference of the swirl tube 11, and the plurality of jet hole groups are arranged in sequence along the height direction of the swirl tube 11, thereby forming an atomization area in the swirl tube 11, so that the carbon dioxide in the decarbonized gas can be fully absorbed. Furthermore, the arrangement angles of two adjacent jet hole groups can be the same or different. If the same arrangement angle is adopted, the two upper and lower adjacent jet holes 118 are arranged in a straight line along the height direction; if different arrangement angles are adopted, the two upper and lower adjacent jet holes 118 are arranged in an annular staggered manner along the swirl tube 11. Furthermore, the spacing between the two upper and lower adjacent jet hole groups is three times the diameter of the jet hole 118.

[0056] In an embodiment of the present invention, jet holes 118 are arranged to be tilted from the outside to the inside, away from the radial direction of cyclone tube 11. The tilt of jet holes 118 is designed to face the cyclonic direction of the decarburization gas. The decarburization solvent is sprayed toward the decarburization gas, resulting in a more intense impact between the decarburization solvent and the decarburization gas, and a better atomization effect, thereby further improving the carbon dioxide absorption efficiency. Of course, jet holes 118 can also be arranged radially toward the axis of cyclone section 112. This arrangement facilitates processing and reduces the production cost of decarburization device 100.

[0057] In order to achieve the above objectives, the present invention also provides a carbon dioxide treatment system, such as Figure 4 As shown, the carbon dioxide treatment system includes a gas supply device 200, a liquid supply device 300, a control device 500, and the above-mentioned decarbonization device 100. The gas supply device 200 is used to communicate with the tangential gas inlet 116 and provide decarbonization gas, the liquid supply device 300 is used to communicate with the ejector tube 21 and inject decarbonization solvent, and the control device 500 is respectively connected to the gas supply device 200 and the liquid supply device 300 and is configured as follows:

[0058] The gas supply device 200 and the liquid supply device 300 are controlled to adjust the supply amount according to preset conditions.

[0059] Specifically, the gas supply device 200 includes a gas supply component 201 and an air intake control component 202. The gas supply component 201 is used to provide decarbonization gas with a certain carbon dioxide concentration. The air intake control component 202 includes a regulating valve and a flow meter. Both are arranged on the pipeline from the gas supply component 201 to the tangential air inlet 116 and are both communicatively connected to the control device 500. The flow meter feeds back the real-time flow rate to the control device 500. The control device 500 calculates the gas flow rate based on the real-time flow rate, and then controls the opening of the regulating valve according to preset conditions and the gas flow rate.

[0060] Furthermore, a second concentration sensor is provided within the gas supply assembly 201 to detect the initial carbon dioxide concentration of the decarburizing gas. The gas supply assembly 201 is provided with an air inlet, and an air intake fan is provided at the air inlet. The control device 500 is in communication with the second concentration sensor and the gas supply assembly 201. When the initial carbon dioxide concentration is greater than a preset concentration value (typically set to 15%), the gas supply assembly 201 is controlled to open the air inlet and start the air intake fan until the initial carbon dioxide concentration drops below the preset concentration value. Through the gas supply assembly 201, the carbon dioxide concentration of the decarburizing gas entering the swirl flow channel 117 can be maintained near the preset concentration value to achieve the optimal decarburizing effect. The preset concentration value can be selected based on the type of decarburizing solvent used. In a specific embodiment of the present invention, the decarburizing solvent is an organic amine absorbent having a concentration in the range of 10-50%, and the preset concentration value is set between 10-15% (v / v).

[0061] In an embodiment of the present invention, the carbon dioxide treatment system further includes a temperature control device 400, which includes a heat exchanger and a constant temperature circulation component. The pipe side of the heat exchanger is connected to the liquid supply device 300 and the ejector tube 21 respectively. The constant temperature circulation component is communicatively connected to the control device 500 and is used to pass heat exchange medium into the shell side of the heat exchanger. The control device 500 is further configured as follows:

[0062] Control the constant temperature circulation component to adjust the temperature according to the preset conditions.

[0063] Specifically, the heat exchange medium is water, and the constant temperature circulation component is a combination of a water pump and a heater. These two components, together with the shell side of the heat exchanger, form a circulating water circuit. Furthermore, the decarbonized gas discharged from the factory has a relatively high temperature. To effectively utilize the thermal energy, two heat exchangers can be provided. One heat exchanger, together with the water pump and heater, forms the aforementioned circulating water circuit, while the shell side of the other heat exchanger connects the factory's exhaust port and the gas supply component 201. The decarbonized solution passes through the tubes of the two heat exchangers from the liquid supply device 300, first exchanging heat with the decarbonized gas to initially raise its temperature, and then exchanging heat with water to control the temperature at a preset value. Furthermore, a temperature sensor is provided between the tubes of the two heat exchangers. The control device 500 adjusts the power of the heater based on feedback data from the temperature sensor, maintaining the temperature of the decarbonized solution near the preset value after the two heat exchanges, thereby improving the efficiency of carbon dioxide absorption.

[0064] More specifically, there are two temperature regulating devices 400. One temperature regulating device 400 regulates the temperature of the decarbonization solvent as described above, and the other temperature regulating device 400 is arranged between the gas supply component 201 and the air intake control component 202, and is used to regulate the temperature of the decarbonization gas so that the overall temperature in the swirl flow channel 117 meets the maximum reaction efficiency.

[0065] In an embodiment of the present invention, the carbon dioxide treatment system further includes a first concentration detector provided at the outlet of the overflow channel 121. The control device 500 is in communication with the first concentration detector. Controlling the gas supply device 200 and the liquid supply device 300 to adjust the supply amount according to preset conditions further includes:

[0066] Control the gas supply device 200 and the liquid supply device 300 to supply according to initial preset conditions;

[0067] receiving a real-time carbon dioxide concentration detected by a first concentration detector;

[0068] When the carbon dioxide concentration is higher than a preset maximum threshold, the gas supply device 200 is controlled to reduce the gas supply amount, and / or the liquid supply device 300 is controlled to increase the liquid supply amount.

[0069] Specifically, the initial preset conditions can be determined using a lookup table. Preliminary testing can be used to determine the optimal intake air velocity and liquid injection velocity for different carbon dioxide concentrations. This data is then input into the storage unit of the control device 500. The control device 500 then determines the initial output parameters of the intake air volume control component 202 and the liquid supply device 300 based on the initial carbon dioxide concentration reported by the second concentration sensor. Furthermore, the control device 500 can also receive real-time carbon dioxide concentration data from the first concentration detector to provide feedback and adjust the air volume control component and liquid supply device 300. Alternatively, a discrete function can be constructed through preliminary testing. The controller can then calculate the intake air velocity and liquid injection velocity based on this discrete function and control the air volume control component and liquid supply device 300 to achieve the corresponding outputs.

[0070] In order to verify the effect of the carbon dioxide treatment system, the present invention also designed three groups of experiments for verification. The size parameters of the decarbonization device 100 selected in the experiment are as follows: Figure 5 shown.

[0071] Experiment 1: The temperature regulating device 400 ensures that the internal temperature of the decarbonization device 100 is maintained at 30°C, the gas supply device 200 stably controls the intake speed of the decarbonization gas to 10m / s, and the carbon dioxide concentration is ensured to be around 13-15% (v / v), the liquid supply device 300 provides MEA absorption liquid (ethanolamine) with a concentration of 35%, and ensures that the liquid phase injection speed is 2m / s.

[0072] After being processed by the absorption device, it is detected that the carbon dioxide concentration in the purified gas is less than 0.1%.

[0073] Experiment 2: The temperature regulating device 400 ensures that the internal temperature of the decarbonization device 100 is maintained at 30°C, the gas supply device 200 stably controls the intake speed of the decarbonization gas to 10m / s, and the carbon dioxide concentration is ensured to be around 13-15% (v / v), the liquid supply device 300 provides MEA absorption liquid (ethanolamine) with a concentration of 35%, and ensures that the liquid phase injection speed is 0.1m / s.

[0074] After being processed by the absorption device, the carbon dioxide concentration in the purified gas was detected to be 2%.

[0075] Experiment 3: The temperature regulating device 400 ensures that the internal temperature of the decarbonization device 100 is maintained at 30°C, the gas supply device 200 stably controls the intake speed of the decarbonization gas to 10m / s, and the carbon dioxide concentration is around 20% (v / v), and the liquid supply device 300 provides MEA absorption liquid (ethanolamine) with a concentration of 35%, and ensures that the liquid phase injection speed is 2m / s.

[0076] After being processed by the absorption device, the carbon dioxide concentration in the purified gas was detected to be 5%.

[0077] The above experiments demonstrate that the carbon dioxide treatment system provided by the present invention has good carbon dioxide absorption efficiency and is suitable for low partial pressure carbon dioxide absorption or capture devices, and is applicable to industrial waste gas treatment, carbon capture and storage, air pollution control, climate change regulation and other fields. Furthermore, in the carbon dioxide treatment system, the setting parameters of each device are preferably:

[0078] The gas supply device 200 outputs decarbonized gas with a carbon dioxide concentration of 10-15% (v / v) and an intake velocity of 8-14 m / s;

[0079] The temperature regulating device 400 maintains the internal temperature of the decarburization device 100 between 10°C and 40°C;

[0080] The liquid supply device 300 has a liquid phase injection velocity between 0.4 and 4 m / s.

[0081] By using the above-mentioned preferred parameters, the carbon dioxide processing system can effectively purify the carbon dioxide concentration in the decarbonized gas to less than 0.5%.

[0082] Figure 5In the figure, the parameters respectively represent: H represents the height of the decarbonization device 100, H1 represents the height of the air inlet part 111 and the swirl part 112, H2 represents the height of the confluence part 113, h1 represents the height of the air inlet part 111, h2 represents the height of the jet tube 21, a represents the height of the tangential air inlet 116, b represents the width of the tangential air inlet 116, d represents the aperture of the jet hole 118, D1 represents the width of the swirl flow channel 117, D2 represents the inner diameter of the liquid inlet pipe 22, Dx represents the width of the overflow flow channel 121, Dy represents the outer diameter of the jet tube 21, S represents the distance from the lower end surface of the overflow pipe to the top wall of the swirl tube 11, and L represents the distance between two adjacent groups of jet holes.

[0083] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0084] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0085] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0086] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A decarbonization device, characterized in that: The decarbonization device (100) comprises: A cyclone assembly (1) comprises a cyclone cylinder (11) and a jacketed tube (12), wherein the jacketed tube (12) is vertically arranged inside the cyclone cylinder (11) and encloses an overflow channel (121), a cyclone channel (117) is formed between the cyclone cylinder (11) and the jacketed tube (12), the lower end of the overflow channel (121) is communicated with the cyclone channel (117), the upper end of the overflow channel (121) extends out of the top of the cyclone cylinder (11), a tangential air inlet (116) for decarburization gas to enter the cyclone channel (117) is provided on the cyclone cylinder (11), and the cyclone cylinder (11) is further provided with a plurality of jet holes (118) at intervals at a position opposite to the jacketed tube (12); The jet assembly (2) comprises a jet tube (21) sleeved on the cyclone tube (11) and covering the outside of the plurality of jet holes (118); the jet tube (21) is used to be connected to a liquid supply device (300) for spraying a decarbonization solvent.

2. The decarbonization device according to claim 1, characterized in that The cyclone cylinder (11) comprises an air inlet portion (111) and a cyclone portion (112) arranged in sequence from top to bottom, the air inlet portion (111) is formed with the tangential air inlet (116), a plurality of jet holes (118) are opened on the cyclone portion (112), and the lower end of the jacket tube (12) is guided to the lower end of the cyclone portion (112).

3. The decarbonization device according to claim 2, characterized in that The swirl cylinder (11) further includes a confluence portion (113) provided at the lower end of the swirl portion (112), the confluence portion (113) enclosing a confluence flow channel (119) connected to the overflow flow channel (121), the confluence flow channel (119) being arranged in a tapered manner facing away from the overflow flow channel (121), and the lower end of the confluence flow channel (119) being open.

4. The decarbonization device according to claim 2, characterized in that The air inlet portion (111) is provided with an air pipe connecting portion (115) for forming the tangential air inlet (116). The tangential air inlet (116) is located on one side of the jacket tube (12), and the tangential air inlet (116) is arranged tangentially to the inner peripheral wall of the air inlet portion (111) away from the first inner wall side of the jacket tube (12). The extended surface of the tangential air inlet (116) close to the second inner wall side of the jacket tube (12) is arranged tangentially to the outer wall of the jacket tube (12). The jet tube (21) is provided on the swirl portion (112), and the upper end surface of the jet tube (21) carries the air pipe connecting portion (115).

5. The decarbonization device according to claim 2, characterized in that: The lower end of the jacket tube (12) extends downward beyond any one of the jet holes (118).

6. The decarbonization device according to any one of claims 1 to 5, characterized in that: The plurality of jet holes (118) are sequentially spaced apart along the circumference of the cyclone cylinder (11). The jet assembly (2) further comprises two liquid inlet pipes (22). The two liquid inlet pipes (22) are oppositely arranged on both sides of the jet cylinder (21) and are used for connecting to the two liquid outlets of the liquid supply device (300) in a one-to-one correspondence.

7. The decarbonization device according to any one of claims 1 to 5, characterized in that: The jet hole (118) is tilted in a direction from outside to inside, away from the radial direction of the cyclone cylinder (11), and the tilted direction of the jet hole (118) is used to face the cyclone direction of the decarburized gas.

8. A carbon dioxide treatment system, characterized in that: The carbon dioxide treatment system comprises a gas supply device (200), a liquid supply device (300), a control device (500), and a decarbonization device (100) according to any one of claims 1 to 7, wherein the gas supply device (200) is used to communicate with the tangential gas inlet (116) and provide decarbonization gas, the liquid supply device (300) is used to communicate with the jet tube (21) and spray decarbonization solvent, and the control device (500) is respectively connected to the gas supply device (200) and the liquid supply device (300), and is configured as follows: The gas supply device (200) and the liquid supply device (300) are controlled to adjust the supply amount according to preset conditions.

9. The carbon dioxide treatment system according to claim 8, characterized in that The carbon dioxide treatment system further comprises a temperature regulating device (400), the temperature regulating device (400) comprising a heat exchanger and a constant temperature circulation component, the pipe side of the heat exchanger being connected to the liquid supply device (300) and the ejector tube (21) respectively, the constant temperature circulation component being communicatively connected to the control device (500) and being used for passing a heat exchange medium into the shell side of the heat exchanger, and the control device (500) being further configured as follows: The constant temperature circulation component is controlled to adjust the temperature according to preset conditions.

10. The carbon dioxide treatment system according to claim 8, characterized in that The carbon dioxide treatment system further comprises a first concentration detector provided at the outlet of the overflow flow channel (121), the control device (500) being in communication connection with the first concentration detector, and the control of the gas supply device (200) and the liquid supply device (300) to adjust the supply amount according to preset conditions further comprises: controlling the gas supply device (200) and the liquid supply device (300) to supply according to initial preset conditions; receiving a real-time carbon dioxide concentration detected by the first concentration detector; When the real-time carbon dioxide concentration is higher than a preset maximum threshold, the gas supply device (200) is controlled to reduce the gas supply amount, and / or the liquid supply device (300) is controlled to increase the liquid supply amount.

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