A carbon dioxide recovery stripping column

Abstract

The utility model provides a kind of carbon dioxide recovery analytical tower, it is related to analytical tower technical field, including tower body, still include exhaust pipe, exhaust pipe is fixed in tower body top;Liquid inlet pipe, liquid inlet pipe is fixed in tower body upper portion;Liquid outlet pipe, liquid outlet pipe is fixed in tower body lower portion;Air inlet pipe, air inlet pipe is fixed in tower body lower portion, and air inlet pipe is located in liquid outlet pipe upper portion;Atomization component, atomization component is fixed in tower body interior, and atomization component is through with liquid inlet pipe.The above technical scheme, its purpose is to cooperate with liquid inlet pipe and atomization component and absorb liquid atomization, and fully countercurrent contact with high-temperature gas from bottom to top to resolve carbon dioxide, and first cooling assembly and second cooling assembly symmetrically arranged in top utilize cooling blade to condense and separate residual water vapor and mist drop in airflow, ensure that exhaust is pure and recycle absorbent liquid circulation.

Description

Technical Field

[0001] This utility model relates to the field of desorption tower technology, and in particular to a carbon dioxide recovery desorption tower. Background Technology

[0002] A carbon dioxide recovery and desorption tower is a core piece of equipment used to desorb carbon dioxide absorbed in an absorbent liquid through heating or depressurization, thereby achieving carbon dioxide recycling and reuse. Its working principle is based on the process of carbon dioxide extraction and desorption within the tower. It is widely used in thermal power plants, chemical plants, and natural gas purification, and has the advantages of simple structure, high desorption efficiency, low energy consumption, and stable operation. It is an important component of the modern carbon capture and storage technology system.

[0003] Traditional carbon dioxide recovery stripping towers typically employ structures such as structured or loose packing materials and trays to increase the gas-liquid contact area, thereby promoting sufficient heat and mass transfer between the carbon dioxide-rich absorbent and the rising steam. However, in actual operation, factors such as packing blockage, flooding, or uneven fluid distribution often result in uneven dispersion of the absorbent in the packing layer, short contact time between some liquid phases and steam, and uneven stripping temperature gradients. Consequently, the carbon dioxide in the absorbent cannot be fully stripped, which not only reduces stripping efficiency but also increases the burden and energy consumption of subsequent absorption processes. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a carbon dioxide recovery and desorption tower, comprising a tower body, an exhaust pipe fixed to the top of the tower body; a liquid inlet pipe fixed to the upper part of the tower body; a liquid outlet pipe fixed to the lower part of the tower body; an air inlet pipe fixed to the lower part of the tower body and located above the liquid outlet pipe; and an atomizing component fixed inside the tower body and communicating with the liquid inlet pipe. In use, the air inlet pipe is used to connect to an external air pump to transmit high-temperature gas into the tower body, and the liquid inlet pipe is used to connect to a liquid pump to transmit absorbent liquid into the tower body. The atomizing component receives the carbon dioxide-containing absorbent liquid transmitted by the liquid inlet pipe and atomizes it to fully contact the high-temperature gas transmitted by the air inlet pipe. The exhaust pipe and the liquid outlet pipe are used to discharge the desorbed carbon dioxide gas and absorbent liquid for recycling.

[0006] In at least some embodiments, a flange is fixedly connected to the end of the exhaust pipe, liquid inlet pipe, liquid outlet pipe, and air inlet pipe away from the tower body; the atomizing assembly includes a transmission ring fixed inside the tower body, and a transmission groove is provided at the lower part of the transmission ring.

[0007] In at least some embodiments, a lifting ring is slidably mounted on the transmission groove of the transmission ring via a spring telescopic rod, and the inner and outer rings of the lifting ring are rounded.

[0008] In at least some embodiments, the lifting ring is hydraulically driven to overcome the tension of the spring telescopic rod and descends, and is formed with the transmission ring to form a first spray gap and a second spray gap.

[0009] In at least some embodiments, the upper part of the lifting ring is further provided with a diversion groove, and there are multiple diversion grooves arranged in a circumferential array on the upper part of the lifting ring.

[0010] In at least some embodiments, a first cooling component and a second cooling component are fixedly installed on the top of the tower body. The first cooling component and the second cooling component condense the passing gas. The first cooling component and the second cooling component have the same structure and are symmetrically arranged. The first cooling component includes cooling blades, which are inclined. A plurality of cooling blades are arranged in a circumferential array and fixedly formed to form the first cooling component. A flow guide channel is formed between the plurality of cooling blades.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this utility model, by setting up a tower body, an exhaust pipe, a liquid inlet pipe, a liquid outlet pipe, an air inlet pipe, and an atomizing component that communicates with the liquid inlet pipe, a highly efficient analytical structure is formed that enables the atomization of the absorbent liquid to fully countercurrently contact with the high-temperature gas. During operation, the carbon dioxide-rich absorbent is introduced from the top of the tower through the inlet pipe connected to the liquid pump. It is rapidly atomized into a large number of fine droplets inside the tower by the atomizing components, which greatly increases the liquid phase surface area and distributes it evenly in the desorption area. At the same time, high-temperature gas is introduced from the bottom of the tower through the inlet pipe connected to the external gas pump. The high-temperature gas flows from bottom to top along the tower and forms a full countercurrent contact with the falling atomized droplets. Through the heat and mass transfer process, the carbon dioxide in the atomized droplets is rapidly released from the liquid phase under heating conditions and gathers upward with the high-temperature gas. It is discharged through the exhaust pipe located at the top of the tower, realizing the centralized collection and subsequent compression and utilization of carbon dioxide. Meanwhile, the lean liquid after desorption is discharged from the drain pipe at the bottom of the tower under the action of gravity and is returned to the absorption tower for continued absorption and recycling. The entire process uses atomization to replace traditional packing material, which enhances the uniform distribution and effective contact of the gas and liquid phases, avoiding problems such as packing blockage, flooding, or insufficient contact. This ensures the stability of the desorption temperature field and mass transfer process, significantly improving the carbon dioxide desorption efficiency and the overall energy efficiency of the device. It provides an efficient, low-consumption, and controllable desorption solution for industrial carbon capture and storage. Attached Figure Description

[0012] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a carbon dioxide recovery and analysis tower. Figure 2 This utility model provides a three-dimensional structural schematic diagram of the cross-section of the tower body in a carbon dioxide recovery and analysis tower; Figure 3 This utility model provides a three-dimensional structural schematic diagram of an atomizing component in a carbon dioxide recovery and analysis tower; Figure 4 This invention provides a three-dimensional schematic diagram of the lifting ring structure in a carbon dioxide recovery and analysis tower.

[0013] Legend: 1. Tower body; 2. Exhaust pipe; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Flange; 6. Atomizing assembly; 7. First cooling assembly; 8. Second cooling assembly; 9. Air inlet pipe; 601. Transfer ring; 602. Transfer groove; 603. Lifting ring; 604. First spray gap; 605. Second spray gap; 606. Spring telescopic rod; 607. Diverter groove. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Example, according to Figures 1-4 As shown in the figure, the present invention provides a carbon dioxide recovery and analysis tower, including a tower body 1, an exhaust pipe 2 fixed to the top of the tower body 1, a liquid inlet pipe 3 fixed to the upper part of the tower body 1, a liquid outlet pipe 4 fixed to the lower part of the tower body 1, an air inlet pipe 9 fixed to the lower part of the tower body 1 and located above the liquid outlet pipe 4, and an atomizing component 6 fixed inside the tower body 1 and communicating with the liquid inlet pipe 3. In use, the air inlet pipe 9 is used to connect an external air pump to transmit high-temperature gas into the tower body 1, and the liquid inlet pipe 3 is used to connect a liquid pump to transmit absorbent into the tower body 1. The atomizing component 6 receives the carbon dioxide-containing absorbent transmitted by the liquid inlet pipe 3 and atomizes it to fully contact the high-temperature gas transmitted by the air inlet pipe 9. The exhaust pipe 2 and the liquid outlet pipe 4 are used to discharge the decomposed carbon dioxide gas and absorbent for recycling.

[0017] The aforementioned carbon dioxide recovery and analysis tower, by setting up a tower body 1, an exhaust pipe 2, a liquid inlet pipe 3, a liquid outlet pipe 4, an air inlet pipe 9, and an atomizing component 6 connected to the liquid inlet pipe 3, forms a highly efficient analysis structure that enables the atomization of the absorbent liquid and full countercurrent contact with the high-temperature gas. During operation, the carbon dioxide-rich absorbent liquid is introduced from the top of the tower body 1 through the liquid inlet pipe 3 connected to the liquid pump. It is rapidly atomized into a large number of fine droplets inside the tower body 1 by the atomizing component 6, which greatly increases the liquid phase surface area and distributes it evenly in the analysis area. At the same time, the air inlet pipe 9 connected to the external air pump introduces high-temperature gas from the bottom of the tower body 1. The high-temperature gas flows from bottom to top along the tower body 1 and forms full countercurrent contact with the falling atomized droplets. Through the heat transfer and mass transfer process, the carbon dioxide in the atomized droplets rapidly escapes from the liquid phase under heating conditions and gathers upward with the high-temperature gas, and is discharged through the exhaust pipe 2 located at the top of the tower body 1, realizing the centralized collection and subsequent compression and utilization of carbon dioxide. Meanwhile, the lean liquid after desorption is discharged from the drain pipe 4 at the bottom of the tower 1 under the action of gravity, and is returned to the absorption tower for continued absorption and recycling. The whole process uses atomization to replace traditional packing to enhance the uniform distribution and effective contact of the gas and liquid phases, avoiding problems such as packing blockage, flooding or insufficient contact, ensuring the stability of the desorption temperature field and mass transfer process, and significantly improving the carbon dioxide desorption efficiency and the overall energy efficiency of the device.

[0018] In this embodiment, a flange 5 is fixedly connected to the end of the exhaust pipe 2, the liquid inlet pipe 3, the liquid outlet pipe 4, and the air inlet pipe 9 away from the tower body 1, respectively; the atomizing component 6 includes a transmission ring 601 fixed inside the tower body 1, a transmission groove 602 is provided at the lower part of the transmission ring 601, and a lifting ring 603 is slidably installed in the transmission groove 602 of the transmission ring 601 through a spring telescopic rod 606. The inner and outer rings of the lifting ring 603 are rounded. The lifting ring 603 is hydraulically driven to overcome the tension of the spring telescopic rod 606 and make a downward movement. It also cooperates with the transmission ring 601 to form a first spray gap 604 and a second spray gap 605. A diversion groove 607 is also provided at the upper part of the lifting ring 603. Multiple diversion grooves 607 are provided and arranged in a circumferential array on the upper part of the lifting ring 603. The ends of the exhaust pipe 2, liquid inlet pipe 3, liquid outlet pipe 4, and air inlet pipe 9 away from the tower body 1 are all fixedly connected to flanges 5 to facilitate reliable sealed connection with external pipelines. The core atomizing component 6 consists of a transmission ring 601, a transmission groove 602, a spring telescopic rod 606, and a lifting ring 603, all fixed inside the tower body 1. During operation, the carbon dioxide-containing absorbent is transported through the inlet pipe 3 to the transmission ring 601 and enters the annular flow channel through the transmission groove 602. A liftable lifting ring 603 is slidably installed in the transmission groove 602. The lifting ring 603 is connected to the transmission ring 601 through a spring telescopic rod 606 to form a movable support. Under hydraulic drive, the absorbent pushes the lifting ring 603 to overcome the spring tension and move downward, so that a first spray gap 604 and a second spray gap 605 with adjustable opening are gradually formed between the lifting ring 603 and the transmission ring 601. This allows the absorbent to be rapidly atomized into a large number of fine droplets under high pressure through the gaps, realizing dynamic adjustment of droplet size and spray angle to adapt to different operating loads. Meanwhile, the multiple diversion slots 607 arranged in a circumferential array on the upper part of the lifting ring 603 can evenly distribute the transmitted liquid flow, further optimize the spray flow field, and enable the atomized droplets to fully countercurrent contact with the high-temperature gas flowing from bottom to top in the desorption tower, effectively promoting the release of carbon dioxide in the absorbent and improving the desorption efficiency.

[0019] In this embodiment, a first cooling component 7 and a second cooling component 8 are also fixedly installed on the top of the tower body 1. The first cooling component 7 and the second cooling component 8 condense the passing gas. The first cooling component 7 and the second cooling component 8 have the same structure and are symmetrically arranged. The first cooling component 7 includes cooling blades, which are inclined. Multiple cooling blades are arranged in a circumferential array and fixedly formed to form the first cooling component 7. A flow guide channel is formed between the multiple cooling blades. The top of the tower body 1 is fixedly installed with a first cooling component 7 and a second cooling component 8. The two have the same structure and are arranged symmetrically. Both are composed of multiple cooling blades that are arranged and fixed in a circumferential array. A flow channel is formed between the multiple cooling blades. Before the high-temperature gas carrying carbon dioxide after desorption is discharged from the inside of the tower body 1 through the exhaust pipe 2, it must first pass through the first cooling component 7 and the second cooling component 8. Under the action of the inclined arrangement of the cooling blades and the guide channel, the airflow is forced to change its direction and fully contact the cooling blades. The cooling blades are connected to the external cooling medium or heat dissipation structure to condense the water vapor or a small amount of absorbent droplets in the gas. The condensate entrained in the airflow flows back into the tower or is discharged through the drain pipe 4 under the guidance action, thereby ensuring that the discharged carbon dioxide gas has high purity and low moisture content, while reducing absorbent loss and improving the resource utilization and operating economy of the desorption system.

[0020] The working principle of this utility model is as follows: By setting up a tower body 1, an exhaust pipe 2, a liquid inlet pipe 3, a liquid outlet pipe 4, an air inlet pipe 9, and an atomizing component 6 that is connected to the liquid inlet pipe 3, a highly efficient desorption structure is formed that can realize the atomization of the absorbent liquid and the full countercurrent contact with the high-temperature gas. During operation, the carbon dioxide-rich absorbent liquid is introduced from the top of the tower body 1 through the liquid inlet pipe 3 connected to the liquid pump. It is rapidly atomized into a large number of fine droplets inside the tower body 1 by the atomizing component 6, which greatly increases the liquid phase surface area and distributes it evenly in the desorption area. At the same time, the air inlet pipe 9 connected to the external air pump introduces high-temperature gas from the bottom of the tower body 1. The high-temperature gas flows from bottom to top along the tower body 1 and forms a full countercurrent contact with the falling atomized droplets. Through the heat transfer and mass transfer process, the carbon dioxide in the atomized droplets is rapidly released from the liquid phase under heating conditions and gathers upward with the high-temperature gas. It is discharged from the exhaust pipe 2 located at the top of the tower body 1, realizing the centralized collection and subsequent compression and utilization of carbon dioxide. Meanwhile, the lean liquid after desorption is discharged from the drain pipe 4 at the bottom of the tower 1 under the action of gravity, and is returned to the absorption tower for continued absorption and recycling. The whole process uses atomization to replace traditional packing to enhance the uniform distribution and effective contact of the gas and liquid phases, avoiding problems such as packing blockage, flooding or insufficient contact, ensuring the stability of the desorption temperature field and mass transfer process, and significantly improving the carbon dioxide desorption efficiency and the overall energy efficiency of the device.

[0021] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A carbon dioxide recovery and stripping tower, comprising a tower body (1), characterized in that, Also includes: Exhaust pipe (2), the exhaust pipe (2) is fixed to the top of the tower body (1); Liquid inlet pipe (3), the liquid inlet pipe (3) is fixed to the upper part of the tower body (1); Drain pipe (4), the drain pipe (4) is fixed to the lower part of the tower body (1); An air inlet pipe (9) is fixed to the lower part of the tower body (1) and the air inlet pipe (9) is located above the drain pipe (4); Atomizing component (6) is fixed inside the tower body (1) and is connected to the liquid inlet pipe (3); In use, the air inlet pipe (9) is used to connect an external air pump to transmit high-temperature gas into the tower body (1), and the liquid inlet pipe (3) is used to connect a liquid pump to transmit absorbent liquid into the tower body (1). The atomizing component (6) receives the absorbent liquid containing carbon dioxide transmitted by the liquid inlet pipe (3) and atomizes it to fully contact the high-temperature gas transmitted by the air inlet pipe (9). The exhaust pipe (2) and the liquid outlet pipe (4) are used to discharge the decomposed carbon dioxide gas and absorbent liquid for recycling.

2. The carbon dioxide recovery and stripping tower according to claim 1, characterized in that: The exhaust pipe (2), liquid inlet pipe (3), liquid outlet pipe (4) and air inlet pipe (9) are respectively fixedly connected to a flange (5) at the end away from the tower body (1); The atomizing component (6) includes a transmission ring (601) fixed inside the tower body (1), and a transmission groove (602) is provided at the lower part of the transmission ring (601).

3. The carbon dioxide recovery and stripping tower according to claim 2, characterized in that: The transmission groove (602) of the transmission ring (601) is slidably fitted with a lifting ring (603) via a spring telescopic rod (606), and the inner and outer rings of the lifting ring (603) are rounded.

4. A carbon dioxide recovery and stripping tower according to claim 3, characterized in that: The lifting ring (603) is hydraulically driven to overcome the tension of the spring telescopic rod (606) and descends. It is formed with the transmission ring (601) to form a first spray gap (604) and a second spray gap (605).

5. A carbon dioxide recovery and stripping tower according to claim 4, characterized in that: The upper part of the lifting ring (603) is also provided with a diversion groove (607), and multiple diversion grooves (607) are provided, and multiple diversion grooves (607) are arranged in a circumferential array on the upper part of the lifting ring (603).

6. A carbon dioxide recovery and stripping tower according to claim 1, characterized in that: The top of the tower body (1) is also fixedly installed with a first cooling component (7) and a second cooling component (8), which condense the passing gas. The first cooling component (7) and the second cooling component (8) have the same structure, and the first cooling component (7) and the second cooling component (8) are symmetrically arranged; The first cooling component (7) includes cooling blades, which are inclined and arranged in a circumferential array and fixedly formed into the first cooling component (7), with a flow channel formed between the multiple cooling blades.

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