Flue gas treatment equipment

Abstract

The utility model provides flue gas treatment equipment which comprises a reaction tower provided with a reaction space; the bulk packing layer is arranged in the reaction space; the supporting piece is arranged at the bottom of the bulk packing layer to support the bulk packing layer; the spraying assembly comprises a liquid conveying pump, a liquid conveying pipe and a spraying head, the spraying head is arranged above the bulk packing layer and used for spraying an absorbent solution to the bulk packing layer, and the spraying head is communicated with the liquid conveying pump through the liquid conveying pipe, so that the absorbent solution is conveyed to the spraying head through the liquid conveying pipe by utilizing the liquid conveying pump; and the spraying assembly is configured to enable the pressure of the spray head to be greater than or equal to 30kPa. Compared with the mode of conveying the absorbent solution by adopting distributed drip irrigation in the prior art, the absorbent solution sprayed by the spray head can have larger kinetic energy, so that the absorbent solution rebounds and sputter among a plurality of bulk fillers, the contact area of the absorbent solution and the flue gas is increased, and the flue gas absorption efficiency is improved. The reaction efficiency of the absorbent solution and the flue gas is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a flue gas treatment device. Background Technology

[0002] The large amounts of flue gas generated by factories need to be treated and purified before being released. Carbon capture (CC) is one method of flue gas treatment. CC primarily utilizes the reaction between an absorbent solution and the flue gas within the reaction space of an absorption tower to absorb carbon dioxide from the flue gas. This not only reduces greenhouse gas emissions but also allows for the subsequent utilization of the carbon dioxide. The reaction between the absorbent solution and the flue gas takes place in the absorption tower. The flue gas typically enters the absorption tower from the bottom, reacts with the absorbent solution as it flows upwards within the tower, and finally exits from the top. Therefore, the reaction efficiency between the flue gas and the absorbent solution within the absorption tower has a significant impact on the degree of flue gas purification. Utility Model Content

[0003] One objective of this invention is to provide a flue gas treatment device that can improve the reaction efficiency of flue gas and absorbent solution in the tower to a certain extent.

[0004] Specifically, this utility model provides a flue gas treatment device, comprising:

[0005] The reaction tower is equipped with a reaction space;

[0006] A bulk packing layer is disposed within the reaction space;

[0007] Support members are disposed at the bottom of the bulk packing layer to support the bulk packing layer; and

[0008] The spray assembly includes an infusion pump, an infusion pipe, and a nozzle. The nozzle is disposed above the bulk packing layer and is used to spray an absorbent solution onto the bulk packing layer. The nozzle is connected to the infusion pump through the infusion pipe, thereby utilizing the infusion pump to deliver the absorbent solution to the nozzle through the infusion pipe. The spray assembly is configured such that the pressure of the nozzle is greater than or equal to 30 kPa.

[0009] Optionally, the support member is configured as a structured filler.

[0010] Optionally, the support includes an orifice plate and structured packing, the orifice plate being disposed on the top surface of the structured packing.

[0011] Optionally, the spray assembly is configured such that the pressure of the spray head is greater than or equal to 30 kPa and less than or equal to 300 kPa.

[0012] Optionally, the nozzle has multiple water outlet holes on its water outlet surface, which are distributed outward from the center of the water outlet surface, making the water outlet area of ​​the nozzle truncated cone-shaped.

[0013] Optionally, the included angle between the axes of the two water outlet holes located at the outermost edge of the water outlet surface and symmetrical about the axis of the nozzle is greater than or equal to 75 degrees and less than or equal to 130 degrees.

[0014] Optionally, the bulk packing layer is formed by stacking one or more of rectangular saddle rings, Raschig rings, or Pall rings.

[0015] Optionally, the stacking height of the bulk packing layer is set to be greater than or equal to 50 mm and less than or equal to 500 mm.

[0016] This utility model discloses a flue gas treatment device that uses a bulk packing layer within the reaction space of a reaction tower. An absorbent solution is sprayed onto the bulk packing layer using a spray assembly consisting of a pump, a pipe, and nozzles. The nozzles are connected to the pump via pipes, allowing the pump to deliver the absorbent solution to the nozzles, which then spray it onto the bulk packing layer. The spray assembly is configured to maintain a nozzle pressure of at least 30 kPa. Compared to existing distributed drip irrigation methods, this design allows the sprayed absorbent solution to have greater kinetic energy. Furthermore, the bottom of the nozzle is formed by a bulk packing layer composed of multiple pieces of packing material. Therefore, the absorbent solution with higher kinetic energy bounces and splashes between the packing material after landing on the layer, increasing the distribution area of ​​the absorbent solution within the packing layer. This increases the contact area between the absorbent solution and the flue gas, thereby improving the reaction efficiency between the absorbent solution and the flue gas. Moreover, the absorbent solution sprayed from the nozzle has greater kinetic energy, which can also impact the bulk packing layer and reduce the occurrence of particle blockage in the bulk packing layer.

[0017] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a schematic diagram of a flue gas treatment device according to an embodiment of the present invention;

[0020] Figure 2This is a schematic diagram of the water outlet surface of a nozzle in a flue gas treatment device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the water outlet area of ​​a nozzle in a flue gas treatment device according to an embodiment of the present invention. Detailed Implementation

[0022] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1As shown, in one embodiment, the flue gas treatment equipment includes a reaction tower 100, a bulk packing layer 200, a support member 300, and a spray assembly. The reaction tower 100 is provided with a reaction space 101. The bulk packing layer 200 is disposed within the reaction space 101. The support member 300 is disposed at the bottom of the bulk packing layer 200 to support the bulk packing layer 200. The spray assembly includes a liquid pump 400, a liquid delivery pipe 500, and a nozzle 600. The nozzle 600 is disposed above the bulk packing layer 200 for spraying liquid onto the bulk packing layer 200. The nozzle 600 is connected to the liquid pump 400 through the liquid delivery pipe 500, thereby utilizing the liquid pump 400 to deliver an absorbent solution to the nozzle 600 through the liquid delivery pipe 500, and the spray assembly is configured such that the pressure of the nozzle 600 is greater than or equal to 30 kPa.

[0026] Reference Figure 1 and Figure 2 As shown, specifically, the bulk packing layer 200 is a structural layer formed by the stacking of multiple bulk packing materials, such as rectangular saddle rings, Raschig rings, or Pall rings. The nozzle 600 is located above the bulk packing layer 200, with its outlet surface facing the bulk packing layer 200. The outlet surface of the nozzle 600 has multiple outlet holes 601, allowing the absorbent solution to be sprayed onto the bulk packing layer 200 through these holes.

[0027] The bulk packing layer 200 has a stacking height of 50 mm or more and 500 mm or less. For example, it can be 50 mm, 70 mm, 100 mm, 200 mm, 300 mm, 400 mm, or 500 mm, etc. This design, combined with the 600 pressure of the nozzle, achieves good liquid dispersion without occupying too much reaction space.

[0028] Reference Figure 1 As shown, specifically, the flue gas reaction equipment also includes a liquid storage container 700 for storing the absorbent solution. A delivery pump 400 delivers the absorbent solution from the liquid storage container 700 to a nozzle 600 via a delivery pipe 500, and then sprays it onto the bulk packing layer through the nozzle 600. The spray assembly is configured such that the pressure of the nozzle 600 is greater than or equal to 30 kPa; specifically, the pressure of the nozzle 600 is greater than or equal to 30 kPa and less than or equal to 300 kPa. For example, it could be 30 kPa, 40 kPa, 70 kPa, 100 kPa, 120 kPa, 170 kPa, 200 kPa, 240 kPa, 280 kPa, 300 kPa, etc.

[0029] In this embodiment, a bulk packing layer 200 is provided in the reaction space 101 of the reaction tower 100, and an absorbent solution is sprayed onto the bulk packing layer 200 using a spray assembly consisting of a pump 400, a pipe 500, and a nozzle 600. The nozzle 600 is connected to the pump 400 through the pipe 500, so that the pump 400 delivers the absorbent solution to the nozzle 600 through the pipe 500, and the nozzle 600 sprays the absorbent solution onto the bulk packing layer 200. Furthermore, the spray assembly is configured to ensure that the pressure of the nozzle 600 is greater than or equal to 30 kPa. Compared to the existing technology that uses distributed drip irrigation to deliver the absorbent solution, this allows the absorbent solution sprayed from the nozzle 600 to have greater kinetic energy. Since the bottom of the nozzle 600 is a bulk packing layer 200 composed of multiple bulk packing materials, the absorbent solution with greater kinetic energy, upon landing on the bulk packing layer 200, will bounce and splash between the multiple bulk packing materials, thereby increasing the distribution area of ​​the absorbent solution in the bulk packing layer 200. This increases the contact area between the absorbent solution and the flue gas, thus helping to improve the reaction efficiency between the absorbent solution and the flue gas. Moreover, the greater kinetic energy of the absorbent solution sprayed from the nozzle 600 can also impact the bulk packing layer 200, reducing the occurrence of particle clogging in the bulk packing layer 200.

[0030] Furthermore, by configuring the spray assembly such that the pressure of the nozzle 600 is greater than or equal to 30 kPa and less than or equal to 300 kPa, the cost of the spray assembly is avoided while ensuring that the absorbent solution sprayed by the nozzle 600 has a large kinetic energy.

[0031] like Figure 1 As shown, in one embodiment, the support 300 is a structured packing, meaning that the top surface of the structured packing supports the bulk packing layer 200. A structured packing is essentially a monolithic packing structure, such as a monolithic metal structure, a monolithic plastic structure, or a monolithic ceramic structure.

[0032] By setting the support 300 as a structured packing, the absorbent solution dispersed by the bulk packing layer 200 can flow more evenly onto the structured packing. Compared with directly spraying the absorbent solution onto the structured packing, this can improve the uniformity of the absorbent solution distribution on the structured packing, thereby improving the reaction efficiency of the absorbent solution and flue gas on the structured packing.

[0033] It should be noted that in some other embodiments, the support member can also be a support structure such as a partition, or the support member can also include an orifice plate and a structured packing. The orifice plate is set on the top surface of the structured packing, that is, the orifice plate is directly made into a bulk packing layer. The absorbent solution flows onto the structured packing after being dispersed in two stages by the bulk packing layer and the orifice plate.

[0034] like Figure 2 and Figure 3 As shown, the nozzle 600 has multiple water outlet holes 601 on its water outlet surface. These holes radiate outwards from the center of the water outlet surface, making the water outlet area of ​​the nozzle 600 shaped like a frustum. Specifically, the water outlet holes 601 are arranged in concentric circles. In other words, the multiple water outlet holes 601 are divided into multiple groups, each group being evenly distributed around the center of the water outlet surface and equidistant from the center. Furthermore, the multiple groups of water outlet holes 601 are stacked outwards from the center of the water outlet surface.

[0035] Furthermore, the closer to the outer edge of the water outlet surface, the greater the inclination of the axis of the water outlet 601 towards the outer edge of the water outlet surface. Specifically, the water outlet surface can be arc-shaped or flat, with the water outlet 601 inclined, thus making the water outlet area of ​​the nozzle 600 frustum-shaped, such as... Figure 3 The shaded area indicates the region.

[0036] By distributing multiple water outlet holes 601 outward from the center of the water outlet surface, the water outlet area of ​​the nozzle 600 is truncated cone-shaped, which helps to make the absorbent solution sprayed by the nozzle 600 more evenly distributed in the bulk packing layer 200.

[0037] It should be noted that in some other embodiments, the multiple water outlets may also be distributed in a spiral shape.

[0038] like Figure 2 and Figure 3 As shown, the included angle between the axes of the two water outlet holes 601 located at the outermost edge of the water outlet surface and symmetrical about the axis of the nozzle 600 is greater than or equal to 75 degrees and less than or equal to 130 degrees. Specifically, refer to... Figure 3 As shown, the slanted dashed lines on the left and right sides of the shaded area indicate the axes of the two water outlet holes 601 located at the outermost edge of the water outlet surface and symmetrical about the axis of the nozzle 600. That is, the angle between the two slanted dashed lines is greater than or equal to 75 degrees and less than or equal to 130 degrees. For example, it can be 75 degrees, 80 degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, 120 degrees, or 130 degrees, etc.

[0039] By ensuring that the included angle between the axes of the two water outlet holes 601 located at the outermost edge of the water outlet surface and symmetrical about the axis of the nozzle 600 is greater than or equal to 75 degrees and less than or equal to 130 degrees, the nozzle 600 has a large spraying area while avoiding insufficient absorbent solution density due to excessive spraying.

[0040] It should be noted that in some other embodiments, the shape of the water outlet can also be square, fan-shaped, or irregular, etc. For example, the water outlet can be a rectangular slit or a fan-shaped slit.

[0041] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A flue gas treatment apparatus, characterized in that, include: The reaction tower is equipped with a reaction space; A bulk packing layer is disposed within the reaction space; A support member is disposed at the bottom of the bulk filler layer to support the bulk filler layer; and The spray assembly includes an infusion pump, an infusion pipe, and a nozzle. The nozzle is disposed above the bulk packing layer and is used to spray an absorbent solution onto the bulk packing layer. The nozzle is connected to the infusion pump through the infusion pipe, thereby utilizing the infusion pump to deliver the absorbent solution to the nozzle through the infusion pipe. The spray assembly is configured such that the pressure of the nozzle is greater than or equal to 30 kPa.

2. The flue gas treatment equipment according to claim 1, characterized in that, The support component is configured as a structured filler.

3. The flue gas treatment equipment according to claim 1, characterized in that, The support includes an orifice plate and structured packing, with the orifice plate disposed on the top surface of the structured packing.

4. The flue gas treatment equipment according to claim 1, characterized in that, The spray assembly is configured such that the pressure of the nozzle is greater than or equal to 30 kPa and less than or equal to 300 kPa.

5. The flue gas treatment equipment according to claim 1, characterized in that, The nozzle has multiple water outlet holes on its water outlet surface, which are distributed outward from the center of the water outlet surface, making the water outlet area of ​​the nozzle shaped like a frustum.

6. The flue gas treatment equipment according to claim 5, characterized in that, The included angle between the axes of the two water outlet holes located at the outermost edge of the water outlet surface and symmetrical about the axis of the nozzle is greater than or equal to 75 degrees and less than or equal to 130 degrees.

7. The flue gas treatment equipment according to claim 1, characterized in that, The bulk packing layer is composed of rectangular saddle rings, Raschig rings, or Pall rings stacked together.

8. The flue gas treatment equipment according to claim 1, characterized in that, The stacking height of the bulk packing layer is set to be greater than or equal to 50 mm and less than or equal to 500 mm.

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