Integrated desorption system

Abstract

The application provides a comprehensive desorption system, relates to the technical field of carbon dioxide capture, and is used for improving the desorption efficiency of the desorption system. The comprehensive desorption system comprises a shell, a vacuum device and a plurality of ultrasonic desorption devices; the vacuum device is communicated to the shell through an exhaust port arranged at the top of the shell, and the air pressure in the vacuum device is lower than that in the shell; each ultrasonic desorption device is arranged at intervals from the bottom of the shell to the top of the shell; any two adjacent ultrasonic desorption devices are configured to overflow the rich amine liquid in the ultrasonic desorption device located above to the ultrasonic desorption device located below when the rich amine liquid in the ultrasonic desorption device located above exceeds the volume of the corresponding ultrasonic desorption device; and the shell is further provided with an input interface and an output interface, the input interface is communicated to the ultrasonic desorption device located at the top, and the output interface is communicated to the ultrasonic desorption device located at the bottom.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide capture technology, and more particularly to an integrated desorption system. Background Technology

[0002] Carbon dioxide capture refers to the process of capturing and purifying carbon dioxide from fossil fuel power plants or industrial facilities. This includes chemical absorption, physical absorption, adsorption, and membrane separation. Currently, chemical absorption, primarily using organic amine solutions, is widely used in large-scale industrial applications. In this method, organic amine solutions absorb carbon dioxide-containing gas, transforming it into a carbon dioxide-rich amine solution. This solution is then desorbed by desorption devices arranged sequentially from bottom to top within a desorption system, releasing the carbon dioxide and thus achieving capture. However, this desorption system suffers from low desorption efficiency. Summary of the Invention

[0003] This invention provides a comprehensive desorption system to improve the desorption efficiency of a desorption system.

[0004] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] This invention provides a comprehensive desorption system for desorbing carbon dioxide from an amine-rich liquid, comprising a housing, a vacuum device, and multiple ultrasonic desorption devices; the vacuum device is connected to the interior of the housing via an exhaust port located at the top of the housing, and the air pressure inside the vacuum device is lower than the air pressure inside the housing; the ultrasonic desorption devices are arranged sequentially at intervals from the bottom to the top of the housing.

[0006] Any two adjacent ultrasonic desorption devices are configured such that when the rich amine solution in the upper ultrasonic desorption device exceeds the volume of the corresponding ultrasonic desorption device, the rich amine solution overflows into the lower ultrasonic desorption device.

[0007] The housing is also provided with an input interface and an output interface. The input interface is connected to the ultrasonic desorption device located at the top, and the output interface is connected to the ultrasonic desorption device located at the bottom.

[0008] The integrated desorption system provided in this embodiment of the invention has the following beneficial effects:

[0009] The integrated desorption system provided in this embodiment of the invention includes a housing, a vacuum device, and multiple ultrasonic desorption devices. The vacuum device is connected to the inside of the housing via an exhaust port provided at the top of the housing. The ultrasonic desorption devices are arranged sequentially and at intervals from the bottom to the top of the housing. The housing is also provided with an input interface and an output interface. The input interface is connected to the ultrasonic desorption device located at the top, and the output interface is connected to the ultrasonic desorption device located at the bottom.

[0010] After the rich amine solution enters the uppermost ultrasonic desorption device through the input interface, it desorbs and releases carbon dioxide within this device. Since any two adjacent ultrasonic desorption devices are configured such that when the volume of the rich amine solution in the upper device exceeds its capacity, the solution overflows into the lower device, allowing the rich amine solution to desorb and release carbon dioxide in multiple devices until it reaches the lowermost device. Furthermore, because the pressure inside the vacuum device is lower than the pressure inside the housing, the carbon dioxide released by the rich amine solution in each ultrasonic desorption device can be promptly discharged through the vacuum device due to the pressure difference. Therefore, compared to related technologies, the integrated desorption system provided in this embodiment of the invention utilizes multiple ultrasonic desorption devices to desorb the rich amine solution and release carbon dioxide, increasing the desorption speed and, through the combined effect of the vacuum device, promptly discharging carbon dioxide, thereby improving the desorption efficiency of the system.

[0011] Based on the above technical solutions, the embodiments of the present invention can be further improved as follows.

[0012] Furthermore, in the same ultrasonic desorption device, the ultrasonic desorption device includes a first support plate with through holes, a first tube, an air outlet tube, and a barrel-shaped structure with the opening facing downwards.

[0013] The first support plate is attached to the inner wall of the housing; the first tube is mounted on the first support plate and communicates with the through hole; the air outlet pipe is installed in the first tube and the through hole, and the top of the air outlet pipe is higher than the top of the first tube; the first support plate, the first tube, and the portion of the housing corresponding to the first tube form a desorption groove; a plurality of ultrasonic transducers are provided in the desorption groove, and each of the ultrasonic transducers is connected to an ultrasonic controller;

[0014] The bottom of the barrel-shaped structure is provided with an air hole, and the barrel-shaped structure is connected to the air outlet pipe through the air hole. The barrel wall of each barrel-shaped structure is close to the inner wall of the shell.

[0015] The bottom of each barrel protrudes relative to the barrel wall toward the top of the shell. From the air hole at the bottom of the barrel to each edge of the bottom of the barrel, with a plane perpendicular to the axis of the air hole as the cross-section, the cross-sectional area of ​​the bottom of the barrel increases.

[0016] Any two adjacent desorption tanks are configured such that when the rich amine liquid in the upper desorption tank exceeds the volume of the corresponding desorption tank, the rich amine liquid overflows into the lower desorption tank through the gap between the corresponding first tube and the corresponding outlet tube and the barrel structure.

[0017] Furthermore, the desorption tank is divided into a first desorption tank and a second desorption tank by the second tube, and the ultrasonic transducer is provided in both the first desorption tank and the second desorption tank; the first desorption tank is formed by a portion of the first support plate, the second tube and the shell corresponding to the second tube, and the second desorption tank is formed by another portion of the first support plate, the second tube and the first tube;

[0018] The second tube is fixed to the first support plate and surrounds the first tube. The top of the first tube is higher than the top of the first tube. The bottom of the second tube has multiple openings spaced apart along the circumference of the second tube.

[0019] Furthermore, the number of ultrasonic transducers in the first desorption tank is greater than the number of ultrasonic transducers in the corresponding second desorption tank.

[0020] Furthermore, from the top of the housing toward the bottom of the housing, the number of ultrasonic transducers in each of the first desorption grooves continuously increases, and the number of ultrasonic transducers in each of the second desorption grooves continuously increases.

[0021] Furthermore, a plurality of baffles for adjusting the size of the opening are provided on the outer wall of the second tube, and the baffles are arranged at intervals along the axial direction of the second tube.

[0022] Each of the baffles is configured such that, under different operating conditions, the overlap area between each of the baffles and the corresponding openings of the integrated desorption system is different.

[0023] Furthermore, the vacuum device is provided with an air inlet and an air outlet, the air inlet being connected to the air outlet, and the vacuum degree of the vacuum device is 10-50 kPa.

[0024] Furthermore, the integrated desorption system also includes a deep desorption device, which is located closer to the bottom of the housing than each of the ultrasonic desorption devices. The deep desorption device includes a second support plate, a third tube, and a heating tube.

[0025] The second support plate is attached to the inner wall of the housing, and the third tube penetrates the second support plate in a direction perpendicular to the second support plate, and the third tube is connected to the output interface;

[0026] The second support plate, the third tube, and the portion of the shell corresponding to the third tube surround and form an annular desorption structure. Multiple ultrasonic transducers and heating tubes are provided inside the annular desorption structure, and each ultrasonic transducer is connected to an ultrasonic controller.

[0027] Furthermore, the heating tube is filled with a heating medium, and the desorption temperature provided by the heating medium is 85-95°C;

[0028] The power of the ultrasonic waves provided by the ultrasonic transducer in the deep desorption device is greater than the power of the ultrasonic waves provided by the ultrasonic transducer in each of the ultrasonic desorption devices.

[0029] Furthermore, the integrated desorption system also includes a demister, the outer surface of which is in contact with the inner wall of the housing, and the demister is located closer to the top of the housing than each of the ultrasonic desorption devices.

[0030] In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that the integrated desorption system provided by the embodiments of the present invention can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in specific embodiments. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the integrated desorption system provided in an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A schematic diagram of the cross-section of surface AA.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Housing; 200 - Vacuum device;

[0036] 300-Ultrasonic desorption device; 400-Depth desorption device;

[0037] 500 - Demister, 101 - Exhaust port;

[0038] 102 - Input interface, 103 - Output interface;

[0039] 310-first support plate, 320-first tube body;

[0040] 330 - Ultrasonic transducer; 340 - Air outlet pipe;

[0041] 350 - Barrel-shaped structure, 360 - Desorption groove;

[0042] 361 - First desorption groove, 362 - Second desorption groove;

[0043] 370 - Ultrasonic controller; 380 - Second tube body;

[0044] 410 - Second support plate; 420 - Third tube body;

[0045] 430 - Heating tube; 440 - Annular desorption structure. Detailed Implementation

[0046] As described in the background section, desorption systems in related technologies suffer from low desorption efficiency. The inventors of this invention have discovered that in related technologies, the rich amine solution desorbs and releases carbon dioxide through multiple desorption devices within the desorption system, thereby achieving carbon dioxide capture. However, because the carbon dioxide desorbed by each desorption device continuously contacts the rich amine solution in the upper desorption device, the carbon dioxide concentration in the upper desorption device continuously increases, and the desorption rate of each desorption device is slow, thus reducing the desorption efficiency of the desorption system.

[0047] To solve the above-mentioned technical problems, the integrated desorption system provided in this embodiment of the invention utilizes multiple ultrasonic desorption devices to desorb amine-rich liquid and release carbon dioxide, and uses the pressure difference between the vacuum device and the shell to promptly discharge carbon dioxide from the shell, thereby improving the desorption efficiency of the desorption system by combining multiple ultrasonic desorption devices and vacuum devices.

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] This invention provides a comprehensive desorption system for desorbing carbon dioxide from amine-rich solutions, such as... Figure 1 and Figure 2 As shown, the integrated desorption system includes a housing 100, a vacuum device 200, and multiple ultrasonic desorption devices 300. The vacuum device 200 is connected to the inside of the housing 100 via an exhaust port 101 provided at the top of the housing 100. The ultrasonic desorption devices 300 are arranged sequentially at intervals from the bottom to the top of the housing 100.

[0050] The housing 100 serves as the main body of the integrated desorption system, supporting the vacuum device 200 and each ultrasonic desorption device 300. The housing 100 can be made of stainless steel, and its shape is generally hollow tower-shaped, approximately hollow tower-shaped, hollow cylindrical, or approximately hollow cylindrical, such as... Figure 1 and Figure 2 As shown, in this embodiment, the shell 100 is approximately hollow cylindrical in shape.

[0051] Vacuum device 200 is used to extract carbon dioxide desorbed by ultrasonic desorption device 300. Vacuum device 200 can be a steam jet pump or a dry vacuum pump. The air pressure inside vacuum device 200 is lower than the air pressure inside housing 100. The vacuum degree of vacuum device 200 is 10-50 kPa.

[0052] The ultrasonic desorption device 300 provides an ultrasonic environment for rapid desorption of the amine-rich liquid to release carbon dioxide. The number of ultrasonic desorption devices 300 can be three, four, or five; in this embodiment, there are three. Any two adjacent ultrasonic desorption devices 300 are configured such that when the volume of the amine-rich liquid in the upper ultrasonic desorption device 300 exceeds the volume of the corresponding ultrasonic desorption device 300, the amine-rich liquid overflows into the lower ultrasonic desorption device 300. Alternatively, the amine-rich liquid can overflow from the upper ultrasonic desorption device 300 to the lower ultrasonic desorption device 300 from any two adjacent ultrasonic desorption devices 300, thereby achieving multiple desorptions of the amine-rich liquid in multiple ultrasonic desorption devices 300, ultimately resulting in complete desorption of the amine-rich liquid.

[0053] like Figure 1 As shown, the housing 100 is also provided with an input interface 102 and an output interface 103. The input interface 101 is the channel for the amine-rich liquid to enter the housing 100 and is connected to the ultrasonic desorption device 300 located at the top. The output interface 102 is the channel for the amine-rich liquid to leave the housing 100 and is connected to the ultrasonic desorption device 300 located at the bottom.

[0054] Because the ultrasonic desorption device 300 provides an ultrasonic environment, the desorption rate of the amine-rich liquid and the release of carbon dioxide is faster than in related technologies. Furthermore, the air pressure inside the vacuum device 200 is lower than the pressure inside the housing 100, allowing carbon dioxide to be discharged from the housing 100 in a timely manner through the vacuum device, thereby improving the desorption efficiency of the integrated desorption system provided in this embodiment.

[0055] In some embodiments, such as Figure 1 As shown, in the same ultrasonic desorption device 300, the ultrasonic desorption device 300 includes a first support plate 310 with through holes, a first tube 320, an exhaust pipe 340, and a barrel-shaped structure 350 with the opening facing downwards. The first support plate 310, the first tube 320, the exhaust pipe 340, and the barrel-shaped structure 350 can all be made of stainless steel.

[0056] The first support plate 310 is attached to the inner wall of the housing 100, and the first tube 320 is installed on the first support plate 310 and communicates with the through hole. In other words, the first tube 320 communicates with the through hole and is installed on the upper surface of the first support plate 310.

[0057] An exhaust pipe 340 is installed inside the first pipe body 320 and the through hole, with the top of the exhaust pipe 340 higher than the top of the first pipe body 320. The exhaust pipe 340 is used to discharge carbon dioxide from the housing 100.

[0058] Each first tube 320 and each outlet tube 340 can be a circular tube. The axis of each first tube 320, the axis of each outlet tube 340 and the axis of the through hole are collinear, so that the rich amine liquid can flow evenly between any two adjacent desorption tanks 360 through the gap between the first tube 320 and each outlet tube 340, thereby further improving the desorption efficiency of the desorption system.

[0059] The first support plate 310, the first tube 320, and the corresponding portion of the shell 100 form a desorption tank 360. The desorption tank 360 is used to desorb the amine-rich liquid and release carbon dioxide. Multiple ultrasonic transducers 330 are installed within the desorption tank 360, and each ultrasonic transducer 330 is connected to an ultrasonic controller 370. The ultrasonic transducers 330 provide an ultrasonic environment, allowing the amine-rich liquid to rapidly desorb and release carbon dioxide under the cavitation, oscillation, and thermal effects of the ultrasonic waves. The ultrasonic controller 370 adjusts the frequency and power of the ultrasonic waves.

[0060] Any two adjacent desorption tanks 360 are configured such that when the rich amine liquid in the upper desorption tank 360 exceeds the volume of the corresponding desorption tank 360, the rich amine liquid overflows into the lower desorption tank through the gap between the corresponding first tube 320 and the corresponding vent pipe 340 and the barrel-shaped structure 350.

[0061] The barrel-shaped structure 350 is used to cooperate with the vent pipe 340 and the first tube 320 to enable the flow of amine-rich liquid between two adjacent ultrasonic desorption devices. The bottom of the barrel-shaped structure 350 has an air hole, through which the barrel-shaped structure 350 connects to the vent pipe 340. The walls of each barrel-shaped structure 350 are close to the inner wall of the shell 100, and the bottom of each barrel protrudes towards the top of the shell relative to the walls. From the air hole at the bottom of the barrel to each edge of the bottom, with a plane perpendicular to the axis of the air hole as the cross-section, the cross-sectional area of ​​the bottom of the barrel increases progressively. Or, in other words, with... Figure 1 As shown in the example, the bottom of the barrel-shaped structure 350 protrudes upwards, and the portion of the bottom closer to the vent protrudes upwards for a greater length. That is, the shape of the bottom is similar to that of a conical hat, which allows the amine-rich liquid to overflow more smoothly from the outer surface of the bottom of the barrel-shaped structure 350 and the outer wall of the barrel-shaped structure 350 to the desorption tank 360 located below.

[0062] The integrated desorption system provided in this embodiment of the invention utilizes the cavitation, oscillation, and thermal effects of ultrasonic waves provided by the ultrasonic transducer 330 within the desorption tank 360 to achieve the desorption of amine-rich liquid. The amine-rich liquid flows between any two adjacent desorption tanks 360 through the gap between the first tube 320 and the outlet pipe 340 and the barrel-shaped structure 350. Carbon dioxide is collected through the outlet pipe 340, thereby achieving the separation of carbon dioxide desorbed by the lower ultrasonic desorption device 300 and the amine-rich liquid in the upper ultrasonic desorption device 300, further improving the desorption efficiency of the desorption system.

[0063] In some embodiments, the desorption groove 360 ​​is divided into a first desorption groove 361 and a second desorption groove 362 by the second tube 380. Both the first desorption groove 361 and the second desorption groove 362 are equipped with ultrasonic transducers 330. The first desorption groove 361 is formed by a portion of the first support plate 310, the second tube 380, and a portion of the shell 100 corresponding to the second tube 380. The second desorption groove 361 is formed by another portion of the first support plate 310, the second tube 380, and the first tube 320. Alternatively, in... Figure 1 As shown in the example, the portion of the desorption tank 360 away from the axis of the housing 100 is the first desorption tank 361, and the portion of the desorption tank 360 closer to the axis of the housing 100 is the second desorption tank 362. The volume of the first desorption tank 361 is larger than the volume of the second desorption tank 362, such as the volume of the first desorption tank 361 being 2 to 3 times the volume of the second desorption tank 362. The residence time of the amine-rich solution in the second desorption tank can be 10 to 15 seconds.

[0064] The second tube 380 is fixed on the first support plate 310 and surrounds the first tube 320. The top of the second tube 380 is higher than the top of the first tube 320. The bottom of the second tube 380 has multiple openings spaced apart along the circumference of the second tube 380, so that the rich amine liquid can flow between the first desorption tank 361 and the second desorption tank 362 through the openings.

[0065] The integrated desorption system provided in this embodiment divides the desorption tank 360 into a first desorption tank 361 and a second desorption tank 362 through the second tube 380, which extends the flow distance of the rich amine liquid in the same ultrasonic desorption device 300, making the desorption of the rich amine liquid in the same ultrasonic desorption device 300 more thorough.

[0066] Based on the above embodiments, the number of ultrasonic transducers 330 in the first desorption tank 361 is greater than the number of ultrasonic transducers 330 in the corresponding second desorption tank 362. From the top of the housing 100 towards the bottom, the number of ultrasonic transducers 330 in each first desorption tank 361 continuously increases, and the number of ultrasonic transducers 330 in each second desorption tank 362 continuously increases. This allows the amine-rich liquid to undergo gradual desorption from shallow to deep within the same ultrasonic desorption device 300, and in multiple ultrasonic desorption devices 300, the amine-rich liquid undergoes gradual desorption from shallow to deep, resulting in more thorough desorption of the amine-rich liquid in the integrated desorption system.

[0067] Based on the above embodiment, a plurality of baffles for adjusting the opening size are provided on the outer wall of the second tube 380, with each baffle spaced apart along the axial direction of the second tube 380. Each baffle is configured such that the overlap area between each baffle and its corresponding opening differs under different operating conditions of the integrated desorption system. This allows for adjustment of the opening size, enabling the integrated desorption system to adapt to different operating conditions and increasing its versatility.

[0068] In some embodiments, the vacuum device 200 is provided with an air inlet and an air outlet, the air inlet being connected to the exhaust port 101, and the vacuum degree of the vacuum device 200 is 10-50 kPa. This allows carbon dioxide to be discharged from the housing 100 more promptly.

[0069] In some embodiments, such as Figure 1 As shown, the integrated desorption system also includes a depth desorption device 400, which is located closer to the bottom of the housing 100 than each ultrasonic desorption device 300. The depth desorption device 400 includes a second support plate 410, a third tube 420, and a heating tube 430. The second support plate 410 and the third tube 420 can both be made of stainless steel.

[0070] The second support plate 410 is attached to the inner wall of the housing 100, and the third tube 420 penetrates the second support plate 410 in a direction perpendicular to the second support plate 410. The third tube 420 is connected to the output interface 103.

[0071] The second support plate 410, the third tube 420, and the corresponding portion of the shell 100 surround and form an annular desorption structure 440. Multiple ultrasonic transducers 330 and heating tubes 430 are disposed within the annular desorption structure 440, and each ultrasonic transducer 330 is connected to an ultrasonic controller 370. The heating tubes 430 provide a high-temperature environment, the ultrasonic transducers 330 provide an ultrasonic environment, and the ultrasonic controller 370 adjusts the frequency and power of the ultrasonic waves. The integrated desorption system provided in this embodiment further improves the utilization rate of the amine-rich liquid through the deep desorption device 400, thereby desorbing more carbon dioxide.

[0072] Based on the above embodiments, the heating tube is filled with a heating medium, which provides a desorption temperature of 85–95°C. The heating medium can be water or steam. The ultrasonic power provided by the ultrasonic transducer in the deep desorption device 400 is greater than the ultrasonic power provided by the ultrasonic transducers in each ultrasonic desorption device 300. This results in a more thorough desorption of the amine-rich solution and the release of carbon dioxide.

[0073] In some embodiments, such as Figure 1 As shown, the integrated desorption system also includes a demister 500. The outer surface of the demister 500 is attached to the inner wall of the housing 100. The demister 500 is located closer to the top of the housing 100 than each ultrasonic desorption device 300. For example, the demister 500 can be a wire mesh demister, which includes a wire mesh and a support device for fixing the wire mesh. The outer surface of the support device is attached to the inner wall of the housing 100, and the wire mesh is composed of metal wires.

[0074] When carbon dioxide carrying mist passes through a wire mesh, the mist collides with the mesh and adheres to the surface of the wires. The diffusion of the mist on the wire surface and its gravitational settling cause the mist to form larger droplets that flow along the wires to the junction of the two wires. As the mist accumulates, the droplets become larger until the accumulated droplets are large enough that their own weight exceeds the combined force of the upward force of the carbon dioxide and the surface tension of the liquid, at which point the droplets separate from the wires and fall. The integrated desorption system provided in this embodiment can separate mist from carbon dioxide, thereby reducing impurities in the carbon dioxide and improving desorption quality.

[0075] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0076] In the description of this invention, the various embodiments or implementation methods are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0077] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A comprehensive desorption system, characterized in that, The integrated desorption system is used to desorb rich amine solution to release carbon dioxide. It includes a housing, a vacuum device, and multiple ultrasonic desorption devices. The vacuum device is connected to the inside of the housing via an exhaust port located at the top of the housing. The air pressure inside the vacuum device is lower than the air pressure inside the housing. Each of the ultrasonic desorption devices is arranged sequentially at intervals from the bottom to the top of the housing; Any two adjacent ultrasonic desorption devices are configured such that when the rich amine solution in the upper ultrasonic desorption device exceeds the volume of the corresponding ultrasonic desorption device, the rich amine solution overflows into the lower ultrasonic desorption device. The housing is also provided with an input interface and an output interface. The input interface is connected to the ultrasonic desorption device located at the top, and the output interface is connected to the ultrasonic desorption device located at the bottom. In the same ultrasonic desorption device, the ultrasonic desorption device includes a first support plate with through holes, a first tube, an air outlet tube, and a barrel-shaped structure with the opening facing downwards. The first support plate is attached to the inner wall of the housing; the first tube is mounted on the first support plate and communicates with the through hole; the air outlet pipe is installed in the first tube and the through hole, and the top of the air outlet pipe is higher than the top of the first tube; the first support plate, the first tube, and the portion of the housing corresponding to the first tube form a desorption groove; a plurality of ultrasonic transducers are provided in the desorption groove, and each of the ultrasonic transducers is connected to an ultrasonic controller; The bottom of the barrel-shaped structure is provided with an air hole, and the barrel-shaped structure is connected to the air outlet pipe through the air hole. The barrel wall of each barrel-shaped structure is close to the inner wall of the shell. The bottom of each barrel protrudes towards the top of the shell relative to the barrel wall. From the air hole of the bottom of the barrel to each edge of the bottom of the barrel, with the plane perpendicular to the axis of the air hole as the cross-section, the cross-sectional area of ​​the bottom of the barrel increases. Any two adjacent desorption tanks are configured such that when the rich amine liquid in the upper desorption tank exceeds the volume of the corresponding desorption tank, the rich amine liquid overflows into the lower desorption tank through the gap between the corresponding first tube and the corresponding outlet tube and the barrel structure.

2. The integrated desorption system according to claim 1, characterized in that, The desorption tank is divided into a first desorption tank and a second desorption tank by the second tube. The ultrasonic transducer is provided in both the first desorption tank and the second desorption tank. The first desorption tank is formed by a portion of the first support plate, the second tube, and a portion of the shell corresponding to the second tube. The second desorption tank is formed by another portion of the first support plate, the second tube, and the first tube. The second tube is fixed to the first support plate and surrounds the first tube. The top of the first tube is higher than the top of the first tube. The bottom of the second tube has multiple openings spaced apart along the circumference of the second tube.

3. The integrated desorption system according to claim 2, characterized in that, The number of ultrasonic transducers in the first desorption tank is greater than the number of ultrasonic transducers in the corresponding second desorption tank.

4. The integrated desorption system according to claim 2, characterized in that, From the top of the housing toward the bottom of the housing, the number of ultrasonic transducers in each of the first desorption cells increases continuously, and the number of ultrasonic transducers in each of the second desorption cells increases continuously.

5. The integrated desorption system according to claim 2, characterized in that, The outer wall of the second tube is provided with a plurality of baffles for adjusting the size of the opening, and the baffles are arranged at intervals along the axial direction of the second tube. Each of the baffles is configured such that, under different operating conditions, the overlap area between each of the baffles and the corresponding openings of the integrated desorption system is different.

6. The integrated desorption system according to claim 1, characterized in that, The vacuum device is provided with an air inlet and an air outlet, the air inlet is connected to the air outlet, and the vacuum degree of the vacuum device is 10-50 kPa.

7. The integrated desorption system according to claim 1, characterized in that, The integrated desorption system also includes a deep desorption device, which is located closer to the bottom of the housing than each of the ultrasonic desorption devices. The deep desorption device includes a second support plate, a third tube, and a heating tube. The second support plate is attached to the inner wall of the housing, and the third tube penetrates the second support plate in a direction perpendicular to the second support plate, and the third tube is connected to the output interface; The second support plate, the third tube, and the portion of the shell corresponding to the third tube surround and form an annular desorption structure. Multiple ultrasonic transducers and the heating tube are arranged inside the annular desorption structure, and each ultrasonic transducer is connected to an ultrasonic controller.

8. The integrated desorption system according to claim 7, characterized in that, The heating tube is filled with a heating medium, and the desorption temperature provided by the heating medium is 85~95℃. The power of the ultrasonic waves provided by the ultrasonic transducer in the deep desorption device is greater than the power of the ultrasonic waves provided by the ultrasonic transducer in each of the ultrasonic desorption devices.

9. The integrated desorption system according to claim 1, characterized in that, The integrated desorption system also includes a demister, the outer surface of which is in contact with the inner wall of the housing, and the demister is located closer to the top of the housing than each of the ultrasonic desorption devices.

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