Liquid collection device, tower vessel, and liquid recovery and distribution method

Abstract

The present disclosure provides a liquid collection device, a tower, and a liquid collection and distribution method. The liquid collection device of the present disclosure includes a liquid collection tray, an air riser pipe, an air riser pipe cap, and a mist collection device. The liquid collection tray is for receiving liquid, and one end of the air riser pipe is installed in the liquid collection tray, allowing gas to flow through the air riser pipe. The air riser pipe cap is installed at the other end of the air riser pipe, and the air riser pipe cap has a flange that is folded back toward the liquid collection tray, forming a storage space between the flange of the air riser pipe cap and the air riser pipe. The mist collection device is installed in this storage space, and the gas discharged from the air riser pipe passes through the mist collection device.

Description

[Technical Field]

[0001] The present disclosure relates to carbon dioxide capture technology, and more particularly to liquid collection devices, columns, and liquid recovery and distribution methods. [Background technology]

[0002] Carbon dioxide capture technology is one of the effective means to control CO2 emissions generated in conventional technologies. In conventional carbon dioxide capture treatment processes, a column is the main device, and multiple trays or multiple packed beds are installed inside the column to achieve distillation or absorption. Since liquid is produced during the gas treatment process, a liquid collector (liquid collector) must be installed inside the column to extract the liquid. Summary of the Invention [Problem to be solved by the invention]

[0003] A typical liquid collection device (or liquid recovery device) includes a liquid collection tray or tank for receiving liquid, an air riser pipe through which gas can pass from the bottom, and an air riser pipe cap that prevents liquid from entering the air riser pipe. However, as the gas passes through the air riser pipe, atomization and mist entrainment occur, resulting in problems such as remixing of the liquid at the top and bottom of the liquid collection device. [Means for solving the problem]

[0004] Therefore, in view of the above-mentioned drawbacks of the liquid collecting devices in the prior art, the present disclosure discloses the following technical means.

[0005] The liquid collection device disclosed herein includes a liquid collection tray, an air riser pipe, an air riser pipe cap, and a mist collection device, wherein the liquid collection tray is for receiving liquid, one end of the air riser pipe is attached to the liquid collection tray and is configured to allow gas to pass through the air riser pipe, the air riser pipe cap is attached to the other end of the air riser pipe, the air riser pipe cap has a flange folded back toward the liquid collection tray, a storage space is formed between the flange and the air riser pipe, the mist collection device is disposed within the storage space, and the gas discharged from the air riser pipe is configured to pass through the mist collection device.

[0006] In an embodiment of the present disclosure, the mist collection device employs a baffle or corrugated filler, and the air riser pipe is rectangular.

[0007] In an embodiment of the present disclosure, the mist collection device adopts a wire mesh demister, and the air riser pipe is rectangular or circular.

[0008] In an embodiment of the present disclosure, the cross-sectional shape of the top plate of the air riser pipe cap is either flat, inverted V-shaped or V-shaped.

[0009] In an embodiment of the present disclosure, the flange of the air riser pipe cap is folded vertically toward the collection tray.

[0010] The present disclosure further discloses a tower vessel, the tower vessel including at least one liquid collecting device, the liquid collecting device being disposed inside the tower vessel and used to collect and distribute liquid inside the tower vessel, the liquid collecting device including a liquid collecting tray, an air riser pipe, an air riser pipe cap and a mist collecting device, the liquid collecting tray being used to receive liquid, one end of the air riser pipe being provided in the liquid collecting tray, gas circulating through the air riser pipe, the air riser pipe cap being provided at the other end of the air riser pipe, the air riser pipe cap having a flange bent toward the liquid collecting tray, an accommodating space being formed between the flange and the air riser pipe, the mist collecting device being provided in the accommodating space, and the gas discharged from the air riser pipe being configured to pass through the mist collecting device.

[0011] The present disclosure further discloses a liquid recovery and distribution method in a tower vessel, characterized in that a mist recovery device is disposed in a space formed by an air riser pipe and a flange of an air riser pipe cap that constitute a liquid collection device in the tower vessel.

[0012] The present disclosure further provides a method for recovering and distributing liquid in a column, the method comprising recovering and distributing liquid within the column using the liquid collection device. [Effects of the Invention]

[0013] The present disclosure has the following beneficial effects. Specifically, the present disclosure discloses a liquid collection device and a tower vessel equipped with a mist collection device, which can prevent backmixing between the upper and lower parts of the tower vessel (liquid backmixing). Furthermore, by slanting the flange (outer rim) of the air riser pipe cap downward, the flow area between the air riser pipe cap and the air riser pipe is enlarged, optimizing the gas flow path and reducing resistance. As a result, liquid present on the air riser pipe cap mainly flows down from both ends of the cap, reducing gas-liquid contact and suppressing the generation and entrainment of mist.

[0014] In order to make the above and other objects, features and advantages of the present disclosure more clearly and easily comprehensible, preferred embodiments are illustrated and described in detail below with reference to the accompanying drawings.

[0015] In order to more clearly explain the technical matters related to the embodiments of the present disclosure or the prior art, the following briefly introduces drawings used in the description of the embodiments or the prior art. Note that the drawings shown below are for illustrating some embodiments of the present disclosure, and it is obvious that those skilled in the art can derive other drawings based on these drawings without requiring creative efforts. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of a liquid collection device according to an embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram of a liquid collection device according to an embodiment of the present disclosure. [Figure 3] 1 is a schematic diagram of a liquid collection device according to an embodiment of the present disclosure. [Figure 4] 2 is a view of a liquid collection device equipped with a mist collection device as viewed from the arrow AA in an embodiment of the present disclosure. FIG. [Figure 5] 2 is a view of a liquid collection device equipped with a mist collection device as viewed from the arrow AA in an embodiment of the present disclosure. FIG. [Figure 6]2 is a view of a liquid collection device equipped with a mist collection device as viewed from the arrow AA in an embodiment of the present disclosure. FIG. [Figure 7] 2 is a view of a liquid collection device equipped with a mist collection device as viewed from the arrow AA in an embodiment of the present disclosure. FIG. [Figure 8] 2 is a view of a liquid collection device equipped with a mist collection device as viewed from the arrow AA in an embodiment of the present disclosure. FIG. [Figure 9] 1 is a view of a liquid collection device provided with a mist collection device as viewed from the arrow BB in an embodiment of the present disclosure. [Figure 10] 1 is a view of a liquid collection device provided with a mist collection device as viewed from the arrow BB in an embodiment of the present disclosure. [Figure 11] FIG. 1 is a schematic diagram of a tower vessel according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings related to the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present disclosure and do not constitute all embodiments of the present disclosure. Based on the embodiments of the present disclosure, those skilled in the art can easily imagine other embodiments without creative efforts, which also fall within the protection scope of the present disclosure.

[0018] In conventional technology, typical air riser pipe caps use a flat, V-shaped, or folded plate that is folded upward, and gas passes from the bottom of the air riser pipe cap along the periphery of the cap through the liquid collector. If there is a large temperature difference between the top and bottom of the liquid collector, if the liquid composition in the upper and lower directions is different, or if the resistance when the gas passes through the air riser pipe cap is too large or too small, there is a problem of the liquid in the upper and lower parts of the liquid collector remixing due to atomization or mist entrainment.

[0019] To solve the above problems, the present disclosure provides a liquid collection device that includes a liquid collection tray, an air riser pipe, an air riser pipe cap, and a mist collection device. The air riser pipe cap has a flange (folded edge) that is folded back toward the liquid collection tray, and the mist collection device is installed in a space formed between the air riser pipe and the air riser pipe cap flange.

[0020] This disclosure discloses a liquid collection device equipped with a mist collection device, which removes mist (droplets) to prevent backmixing of the liquid above and below the liquid collection device. Furthermore, by orienting the flange of the air riser pipe cap downward, i.e., toward the liquid collection tray, the flow area between the air riser pipe and the air riser pipe cap is enlarged, reducing fluid resistance and optimizing the gas flow path. As a result, the liquid on the air riser pipe cap flows down mainly from both ends, reducing gas-liquid contact and further suppressing the generation or entrainment of mist.

[0021] 1 shows a liquid collection device equipped with a mist collection device according to one embodiment of the present disclosure. The liquid collection device includes a liquid collection tray 1, an air riser pipe 2, and an air riser pipe cap 3. The air riser pipe cap has a top plate and a flange 5, which faces downward. A mist collection device 4 is provided in the space formed between the air riser pipe 2 and the flange 5 of the air riser pipe cap.

[0022] In the present disclosure, by providing a mist collection device 4 between the air riser pipe 2 and the flange 5, back-mixing of the liquids above and below the liquid collection device can be prevented.

[0023] Specifically, in the embodiments of the present disclosure, the air riser pipe may be rectangular, square, or circular.

[0024] In the embodiment shown in Figure 1, the air riser pipe is rectangular and the collection tray is circular, fitting into a circular vessel.

[0025] In the embodiment shown in Figure 2, the air riser pipe is rectangular and the collection tray is rectangular, fitting into a rectangular vessel.

[0026] In the embodiment shown in FIG. 3, the air riser pipe is circular, the collection tray is also circular, and fits into a circular vessel.

[0027] Furthermore, in the embodiment of the present disclosure, the liquid collecting device equipped with the mist collecting device may have a flat, curved, or folded top plate shape of the air riser pipe cap. The folded shape may be V-shaped, inverted V-shaped, or other shapes. Figures 4 to 8 show air riser pipe caps with flat, inverted V-shaped, and V-shaped top plates in the embodiment of the present disclosure.

[0028] As a specific example, Figure 4 is a view AA of a liquid collecting device equipped with a mist collecting device disclosed in an embodiment of the present disclosure, showing a structure in which the top plate of the air riser pipe cap is flat and the flange faces vertically downward, which has the advantage of being easy to process.

[0029] 5 is an AA view of a liquid collection device equipped with a mist collection device according to an embodiment of the present disclosure, in which the top plate of the air riser pipe cap is flat and the flange of the cap is angled downward, which increases the flow area between the air riser pipe cap and the air riser pipe and reduces resistance.

[0030] 6 is an AA view of a liquid collection device equipped with a mist collection device according to an embodiment of the present disclosure, in which the cross section of the air riser pipe cap top plate is an inverted V-shape and the cap flange faces vertically downward, which further increases the flow area between the air riser pipe cap top plate and the air riser pipe, thereby reducing resistance.

[0031] 7 is a view AA of a liquid collection device equipped with a mist collection device according to an embodiment of the present disclosure, in which the cross section of the air riser pipe cap top plate is an inverted V-shape, with the cap flange pointing diagonally downward. This configuration further optimizes the gas flow path and further reduces resistance.

[0032] 8 is a view AA of a liquid collection device equipped with a mist collection device according to an embodiment of the present disclosure, in which the cross section of the air riser pipe cap top plate is V-shaped and the cap flange faces diagonally downward. This configuration allows the liquid on the air riser pipe cap to flow down mainly from both ends, reducing gas-liquid contact and reducing the generation or entrainment of mist.

[0033] The mist collecting device 4 is provided in accordance with the space formed between the air riser pipe and the air riser pipe cap flange, and can prevent back-mixing of the liquid above and below the liquid collecting device through the mist collecting device.

[0034] 9 and 10 are B-B views of a liquid collection device equipped with a mist collection device according to an embodiment of the present disclosure.

[0035] Specifically, in one embodiment of the present disclosure, a baffle plate can be employed as the mist collection device 4, and the use of the baffle plate can effectively remove mist with large particle diameters.

[0036] In addition, in one embodiment of the present disclosure, a corrugated plate filler (corrugated plate filler) can be used as the mist collection device 4, which is easy to process, has a small pressure drop, and can effectively remove large particle size mist.

[0037] When a baffle plate or a corrugated plate filler is used, it is advantageous in terms of processing to make the air riser pipe rectangular.

[0038] Specifically, in one embodiment of the present disclosure, a wire mesh demister can be used as the mist collection device 4. Wire mesh demisters exhibit excellent droplet removal effects for mist of both large and small particle sizes, but are not suitable for systems prone to clogging.

[0039] When a wire mesh demister is used, the air riser pipe may be either circular or rectangular in shape.

[0040] The present disclosure further provides a tower vessel. Figure 11 is a schematic diagram of a tower vessel according to an embodiment of the present disclosure, which has at least one liquid collection device installed to collect and distribute liquid inside the tower vessel. Here, the liquid collection device includes a liquid collection tray, an air riser pipe, an air riser pipe cap, and a mist collection device. The liquid collection tray is used to receive liquid, one end of the air riser pipe is attached to the liquid collection tray, and gas passes through the air riser pipe. The air riser pipe cap is attached to the other end of the air riser pipe, and the air riser pipe cap has a flange bent toward the liquid collection tray. A storage space is formed between the air riser pipe and the flange, and a mist collection device is installed in the storage space, so that gas discharged from the air riser pipe passes through the mist collection device.

[0041] In this embodiment, the tower vessel is configured such that, in vertical order from bottom to top, a pre-scrubbing section 04, a carbon dioxide absorption section 02, and an exhaust gas scrubbing section 01 are arranged, and the exhaust gas can pass through each of these sections, namely, the pre-scrubbing section 04, the carbon dioxide absorption section 02, and the exhaust gas scrubbing section 01 in sequence. A liquid collecting device 03 is provided between the pre-scrubbing section 04 and the carbon dioxide absorption section 02.

[0042] At the same time, this disclosure also discloses a method for recovering and distributing liquid in a tower. By providing a mist recovery device between the air riser pipe and the flange of the air riser pipe cap in the liquid collection device inside the tower, the liquid in the tower can be recovered and distributed by the liquid collection device. By using the above-mentioned liquid collection device, the liquid in the tower can be recovered and distributed efficiently.

[0043] Those skilled in the art can easily understand the specific embodiments of the liquid recovery and distribution method in a column provided by the present disclosure based on the description of the above embodiments, so further details will not be provided here.

[0044] Preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings. Many features and advantages of these embodiments will become apparent from the detailed description herein, and the appended claims are therefore intended to cover all such features and advantages that fall within the true spirit and scope of these embodiments. Furthermore, since numerous modifications and changes may readily occur to those skilled in the art, the embodiments of the present disclosure are not limited to the specific structure and operation illustrated and described herein, but are intended to encompass all appropriate modifications and equivalents within the scope thereof.

[0045] Furthermore, in the embodiments of the present disclosure, terms indicating directional or positional relationships, such as "upper" and "lower," are based solely on the directional or positional relationships shown in the accompanying drawings and are merely descriptive terms for facilitating understanding of the present disclosure. These terms do not imply that the indicated or suggested devices or elements are configured or operate in a specific direction or orientation, and do not limit the present disclosure. Unless otherwise expressly specified or limited, terms such as "attach," "connect," and "couple" should be understood broadly. These terms may include fixed connection, detachable connection, integral connection, direct connection, indirect connection via an intermediate medium, and communication between internal elements of a device. Those skilled in the art will understand the specific meanings of these terms in the present disclosure depending on the specific circumstances.

[0046] Although the present disclosure has described the principles and embodiments of the present disclosure using specific examples, these examples are intended to help understand the method and core idea of the present disclosure. At the same time, it is clear to those skilled in the art that various modifications can be made to specific embodiments and application scope based on the idea of the present disclosure. Therefore, the contents of the present disclosure should not be interpreted as limiting the present disclosure. [Explanation of symbols]

[0047] 1 Collection Tray 2 Air riser pipe 3 Air riser pipe cap 4. Mist collection device 5 Flange 01 Exhaust gas cleaning section 02 Carbon dioxide absorption section 03 Liquid collection device 04 Pre-cleaning section

Claims

1. A liquid collection device including a liquid collection tray, an air riser pipe, an air riser pipe cap and a mist collection device, the liquid collection tray is for receiving liquid, one end of the air riser pipe is provided in the liquid collection tray, and a gas is configured to pass through the air riser pipe; the air riser pipe cap is provided at the other end of the air riser pipe, the air riser pipe cap has a flange folded back toward the liquid collection tray, and an accommodation space is formed between the flange and the air riser pipe; The mist collecting device is disposed within the accommodation space, and the gas discharged from the air riser pipe is configured to pass through the mist collecting device.

2. 2. The liquid collecting device according to claim 1, wherein the mist collecting device employs a baffle plate or a corrugated plate-shaped filler, and the air riser pipe is rectangular.

3. 2. The liquid collecting device according to claim 1, wherein the mist collecting device adopts a wire mesh demister, and the air riser pipe is rectangular or circular.

4. The method for manufacturing a liquid collecting device according to claim 1, wherein the cross-sectional shape of the top plate of the air riser pipe cap is any one of a flat shape, an inverted V shape, and a V shape.

5. 2. The liquid collection device of claim 1, wherein the flange of the air riser pipe cap is folded vertically toward the liquid collection tray.

6. a column vessel including at least one liquid collector disposed within the column vessel and adapted to collect and distribute liquid within the column vessel; the liquid collecting device comprises a liquid collecting tray, an air riser pipe, an air riser pipe cap, and a mist collecting device; the liquid collection tray is used to receive liquid, one end of the air riser pipe is provided in the liquid collection tray, and gas flows through the air riser pipe; the air riser pipe cap is provided at the other end of the air riser pipe, the air riser pipe cap has a flange bent toward the liquid collection tray, and an accommodation space is formed between the flange and the air riser pipe; The mist collecting device is provided in the accommodation space, and the gas discharged from the air riser pipe is configured to pass through the mist collecting device.

7. A method for collecting and distributing liquid in a tower vessel, characterized in that a mist collection device is arranged in a space formed by an air riser pipe and a flange of an air riser pipe cap that constitute a liquid collection device in the tower vessel.

8. A method for recovering and distributing liquid in a column vessel, the method comprising recovering and distributing liquid inside the column vessel using a liquid collection device according to any one of claims 1 to 5.

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