Flow dividing device and flue gas treatment device

Abstract

The utility model provides a shunting device and a flue gas treatment device. The flow dividing device comprises a plurality of liquid receiving structures, liquid receiving grooves used for receiving liquid from the upper portion are formed in the liquid receiving structures, the liquid receiving structures are arranged at intervals, and an air flowing channel is formed between every two adjacent liquid receiving structures. And the shielding structure is arranged above the gas flowing channel, the shielding structure is used for preventing liquid from the position above the flow dividing device from entering the gas flowing channel, and a gap is formed between the shielding structure and at least one of the two adjacent liquid receiving structures, so that gas below the flow dividing device can flow to the position above the flow dividing device through the gas flowing channel. Therefore, different gas-liquid reactions can be carried out in the upper area and the lower area of the shunting device, namely, different gas-liquid treatment flows are carried out, so that a plurality of gas treatment areas can be constructed in one reaction space, a plurality of gas treatment flows are realized, and the number of equipment of the flue gas treatment system is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas processing, in particular to a diversion device and a flue gas processing device. Background Art

[0002] The large amount of flue gas generated by the factory needs to be treated and purified before it can be discharged. Among them, carbon capture is also a way of flue gas treatment. Carbon capture is the process of absorbing and recycling carbon dioxide in the flue gas, which not only reduces greenhouse gas emissions, but also allows for subsequent utilization of carbon dioxide. As for the carbon capture treatment of flue gas, the flue gas must go through pretreatment, carbon capture and purification processes before it can be discharged. Because each process requires the use of gas-liquid reaction, different processes require the construction of corresponding facilities, such as dust removal towers, desulfurization towers, denitrification towers, decarbonization towers, etc., resulting in the entire working system occupying a large area and high construction costs. Utility Model Content

[0003] One purpose of the present invention is to provide a diversion device and a flue gas treatment device that can solve any of the above problems.

[0004] In particular, the present invention provides a diversion device comprising:

[0005] a plurality of liquid receiving structures, each of which is formed with a liquid receiving groove for receiving liquid from above, wherein the plurality of liquid receiving structures are arranged at intervals so that a flow channel is formed between two adjacent liquid receiving structures; and

[0006] A shielding structure is arranged above the flow passage, and the shielding structure is used to prevent liquid from above the diverter device from entering the flow passage, and there is a gap between the shielding structure and at least one of the two adjacent liquid contact structures, so that the gas below the diverter device can flow to above the diverter device through the flow passage.

[0007] Optionally, each of the air passages corresponds to one of the shielding structures, the shielding structure is curved, the concave surface of the shielding structure faces the air passage, and the highest point of the shielding structure is aligned with the air passage in the up-down direction.

[0008] Optionally, the convex surface and the concave surface of the shielding structure are both smooth curved surfaces.

[0009] Optionally, the shielding structure is fixedly connected to the side wall of one of the two adjacent liquid contact structures, and has a gap with the side wall of the other one.

[0010] Optionally, a side wall of the liquid contact structure forming a gap with the shielding structure is formed with a smooth guide surface.

[0011] Optionally, the diversion device further includes a liquid collecting container, all the liquid receiving structures are fixedly connected to the liquid collecting container, and all the liquid receiving troughs are communicated with the liquid collecting container, so that the liquid falling into the liquid receiving troughs flows into the liquid collecting container and is collected.

[0012] Optionally, the liquid receiving trough is arranged to be inclined from high to low along a direction from one end away from the liquid collecting container to the liquid collecting container.

[0013] Optionally, the shielding structure has a portion extending into the liquid receiving tank and lower than a top end of a side wall of the liquid receiving tank, for providing a reaction surface for liquid and gas.

[0014] Optionally, a through hole is formed on the portion of the shielding structure extending into the liquid receiving tank.

[0015] In another aspect of the present invention, a flue gas treatment device is provided, comprising:

[0016] a reaction device forming a reaction space; and

[0017] At least one diverter device according to any one of the above items, the diverter device is arranged in the reaction space, and is used to separate the reaction space into a plurality of flue gas treatment areas distributed along the longitudinal direction.

[0018] The diverter device of the present invention forms an air flow channel between two adjacent liquid receiving structures and provides a shielding structure above the air flow channel. The shielding structure can cover the air flow channel. In this way, the liquid sprayed in the area above the diverter device will directly fall into the liquid receiving tank or fall on the shielding structure and then flow into the liquid receiving tank, and will not fall into the area below the diverter device. However, the gas in the area below the diverter device can flow through the air flow channel and the gap between the shielding structure and the liquid receiving structure to the area above the diverter device. In other words, the upper area and the lower area of the diverter device can carry out different gas-liquid reactions, that is, different gas-liquid treatment processes. Therefore, the diverter device of the present application can construct multiple gas treatment areas in one reaction space of a reaction equipment, realize multiple gas treatment processes, effectively reduce the number of equipment in the flue gas treatment system, and thus reduce the floor space and cost of the flue gas treatment system.

[0019] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 is a schematic diagram of a flue gas treatment device according to one embodiment of the present utility model;

[0022] Figure 2 is a schematic cross-sectional view of a flue gas treatment device according to one embodiment of the present utility model;

[0023] Figure 3 is a schematic diagram of a diversion device according to an embodiment of the present utility model;

[0024] Figure 4 is a schematic cross-sectional view of a diversion device according to one embodiment of the present utility model;

[0025] Figure 5 is a partially enlarged schematic cross-sectional view of a diversion device according to one embodiment of the utility model;

[0026] Figure 6 is a schematic diagram of a diversion device according to another embodiment of the present utility model;

[0027] Figure 7 is a schematic cross-sectional view of a diversion device according to another embodiment of the present utility model;

[0028] Figure 8 is a partially enlarged schematic cross-sectional view of a diversion device according to another embodiment of the present utility model;

[0029] Figure 9 It is a partially enlarged schematic cross-sectional view of a diversion device according to another embodiment of the utility model. DETAILED DESCRIPTION

[0030] Those skilled in the art should understand that the embodiments described below are only a portion of the embodiments of the present invention, rather than all of the 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.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] like Figures 1 to 2 As shown, in one embodiment, the flue gas treatment device 10 includes a reaction device 100 and a plurality of diverter devices 200. The reaction device 100 forms a reaction space 101. The plurality of diverter devices 200 are arranged longitudinally within the reaction space 101 to separate the reaction space 101 into a plurality of flue gas treatment areas distributed along the longitudinal direction.

[0034] Reference Figure 1 and Figure 2 As shown, the splitter device 200 has a flue gas treatment area above and below it, and the splitter device 200 allows the airflow from the gas treatment area below it to flow into the gas treatment area above it, but prevents the liquid in the gas treatment area above it from flowing into the gas treatment area below it. In this way, after the gas enters the reaction space 101 from the bottom of the flue gas treatment device 10, it flows upward from the bottom, passing through each gas treatment area in turn, undergoing independent gas-liquid reactions in the gas treatment area, and finally being discharged from the top of the flue gas treatment device 10, thereby completing multiple gas treatment processes within the flue gas treatment device 10.

[0035] For example, the flue gas treatment device 10 can be divided into three gas treatment areas by two diverter devices 200, which are, from bottom to top, the desulfurization area, the carbon capture area, and the purification area. Specifically, the flue gas undergoes flue gas desulfurization treatment in the desulfurization area, and then enters the carbon capture area through the diverter device 200 between the desulfurization area and the carbon capture area. A decarbonization solvent is sprayed in the carbon capture area to decarbonize the flue gas. The sprayed decarbonization solvent falls on the diverter device 200 between the desulfurization area and the carbon capture area, and will not fall into the desulfurization area to affect the desulfurization treatment. The flue gas that has undergone decarbonization continues to flow upward, passes through the diverter device 200 between the carbon capture area and the purification area, and enters the purification area. The purification area can absorb the dispersion medium in the flue gas by electrostatic dust removal. The droplets formed by adsorption fall into the diverter device 200 between the carbon capture area and the purification area, and will not fall into the carbon capture area to affect the decarbonization treatment.

[0036] It should be noted that one, two, three, four, or more diversion devices may be installed within a flue gas treatment device. Furthermore, if there are sufficient gas treatment zones, multiple adjacent gas treatment zones can be used to perform the same gas treatment process. For example, three diversion devices may be installed within a flue gas treatment device, dividing the reaction space into four gas treatment zones: from bottom to top, a desulfurization zone, two carbon capture zones, and a purification zone.

[0037] Furthermore, the specific structure of the diversion device 200 is described with reference to the following embodiments:

[0038] like Figures 3 to 5 As shown, in one embodiment, the flow diverter device 200 includes a plurality of liquid-receiving structures 210, each of which is formed with a liquid-receiving groove 201 for receiving liquid from above. The plurality of liquid-receiving structures 210 are arranged at intervals so that a flow passage 202 is formed between two adjacent liquid-receiving structures 210. The flow diverter device 200 also includes a shielding structure 220 disposed above the flow passage 202. The shielding structure 220 is used to prevent liquid from above the flow diverter device 200 from entering the flow passage 202. A gap is formed between the shielding structure 220 and at least one of the two adjacent liquid-receiving structures 210, so that gas below the flow diverter device 200 can flow to the top of the flow diverter device 200 through the flow passage 202.

[0039] Reference Figures 3 to 5Specifically, the liquid receiving structure 210 forms a liquid receiving trough 201 with an open top. Multiple liquid receiving structures 210 are arranged side by side in the same direction as the liquid receiving trough 201, with gaps between adjacent liquid receiving structures 210. These gaps serve as flow passages 202. A shielding structure 220 is positioned above each flow passage 202, meaning there is one shielding structure 220 for each flow passage 202. The shielding structure 220 covers the flow passage 202 in the vertical direction, with gaps between the sidewalls of the liquid receiving structures 210 on either side.

[0040] Reference Figure 5 The dotted arrows in the middle illustrate the gas flow path. Specifically, the gas below the diverter 200 can flow to the top of the diverter 200 through the gas passage 202 and the gap between the shielding structure 220 and the liquid contact structure 210. Figure 5 The solid arrows in the middle illustrate the liquid flow path. The liquid (desulfurization solvent or decarbonization solvent, etc.) sprayed above the diverter 200 can directly fall into the liquid receiving tank 201, or can fall on the shielding structure 220 and then flow along the shielding structure to the liquid receiving tank 201. When the gas flows above the diverter 200, it can react with the liquid sprayed above the diverter 200. The liquid sprayed above the diverter 200 will not fall into the area below the diverter 200, allowing the areas above and below the diverter 200 to undergo different gas treatment processes.

[0041] In the solution of this embodiment, by forming a flow passage 202 between two adjacent liquid receiving structures 210 and providing a shielding structure 220 above the flow passage 202, the shielding structure 220 can cover the flow passage 202. In this way, the liquid sprayed in the area above the diverter device 200 will directly fall into the liquid receiving tank 201 or fall on the shielding structure 220 and then flow into the liquid receiving tank 201, and will not fall into the area below the diverter device 200. However, the gas in the area below the diverter device 200 can flow through the gap between the flow passage 202 and the shielding structure 220 and the liquid receiving structure 210 to the area above the diverter device 200. In other words, the upper and lower areas of the diverter device 200 can undergo different gas-liquid reactions, that is, different gas-liquid treatment processes. Therefore, the diverter device 200 of this embodiment can construct multiple gas treatment areas within a reaction space of a reaction device, realize multiple gas treatment processes, effectively reduce the number of equipment in the flue gas treatment system, and thus reduce the floor space and cost of the flue gas treatment system.

[0042] like Figures 3 to 5As shown, the shielding structure 220 is curved, with the concave surface of the shielding structure 220 facing the flow passage 202, and the highest point of the shielding structure 220 vertically aligned with the flow passage 202. Specifically, both the convex and concave surfaces of the shielding structure 220 are smoothly curved. The highest point of the shielding structure 220 is vertically aligned with the flow passage 202. In other words, the convex surface of the shielding structure 220 slopes from high to low toward the liquid receiving grooves 201 on both sides.

[0043] Those skilled in the art will appreciate that by configuring the shielding structure 220 in a curved shape, with the concave surface of the shielding structure 220 facing the flow passage 202, and with the highest point of the shielding structure 220 aligned vertically with the flow passage 202, gas from the flow passage 202 can flow to both sides under the guidance of the concave surface of the shielding structure 220, thereby improving the uniformity of gas distribution and facilitating improved gas-liquid reaction efficiency. Furthermore, liquid that falls on the convex surface of the shielding structure 220 can flow to the liquid receiving grooves 201 on both sides under the guidance of the convex surface of the shielding structure 220, thereby preventing liquid from accumulating in the shielding structure 220 and making it less likely for liquid droplets to splash into the flow passage 202.

[0044] Furthermore, by setting the convex surface and the concave surface of the shielding structure 220 to be smooth curved surfaces, it helps to make the gas flow smoother.

[0045] It should be noted that in some other embodiments, the shielding structure may also be a curved structure with an angle, such as an acute angle, a right angle, or an obtuse angle, with the highest point, i.e., the angle, aligned with the air flow channel. Furthermore, in some other embodiments, the shielding structure may also be a flat plate-like structure.

[0046] In addition, it should be noted that, in some other embodiments, the shielding structure may also be a complete plate-shaped structure, covering all the flow passages at the same time, and having through holes arranged at positions aligned with the liquid receiving tank in the upper and lower directions.

[0047] Continue to refer to Figures 3 to 5 As shown, the flow diversion device 200 also includes a liquid collection container 230. All liquid receiving structures 210 are fixedly connected to the liquid collection container 230, and all liquid receiving troughs 201 are in communication with the liquid collection container 230, so that liquid that falls into the liquid receiving troughs 201 flows into the liquid collection container 230 and is collected. Specifically, the liquid collection container 230 is a cubic container. All liquid receiving structures 210 are fixed to the same surface of the liquid collection container 230. The surface where the liquid collection container 230 and the liquid receiving structures 210 are fixed is provided with an opening corresponding to each liquid receiving trough 201, so that liquid that falls into the liquid receiving troughs 201 can flow into the liquid collection container 230 through the opening. At the same time, all shielding structures 220 are also fixedly connected to the liquid collection container 230.

[0048] Those skilled in the art will understand that, by providing the liquid collecting container 230, not only can a common fixed base be provided for all the liquid contacting structures 210, so that all the liquid contacting structures 210 can form a whole with the liquid collecting container 230, facilitating the installation of the diversion device 200 in the reaction equipment, but also the liquid collecting container 230 can be used to collect the liquid used for the gas-liquid reaction, thereby recycling the liquid.

[0049] It should be noted that the diversion device may not be provided with a liquid collecting container, and the multiple liquid receiving structures may be directly fixed on the plate-like structure and then fixed on the side wall of the reaction device, or may be directly fixed on the side wall of the reaction device. At the same time, the liquid in the liquid receiving tank is extracted using a pump tube device.

[0050] Reference Figure 3 As shown, the liquid receiving trough 201 is arranged to be inclined from high to low along the direction from the end away from the liquid collecting container 230 to the liquid collecting container 230. In other words, the point where the liquid receiving trough 201 meets the liquid collecting container 230 is at the lowest point, so that liquid falling into the liquid receiving trough 201 can flow toward the liquid collecting container 230 along the inclined direction, thereby minimizing the accumulation of liquid in the liquid receiving trough 201.

[0051] like Figures 6 to 8 As shown, in one embodiment, the shielding structure 220 is fixedly connected to the sidewall of one of the two adjacent liquid-contacting structures 210, and has a gap with the sidewall of the other. Specifically, it can be said that for two adjacent sidewalls of the two adjacent liquid-contacting structures 210, the top of the sidewall of one liquid-contacting structure 210 extends toward the sidewall of the other liquid-contacting structure 210 to form the shielding structure 220 covering the airflow channel 201.

[0052] Reference Figure 8 The dotted arrows in the middle illustrate the gas flow path. Specifically, the gas below the diverter device 200 can flow to the shielding structure 220 through the flow passage 202. Because the shielding structure 220 is fixedly connected to one of the liquid contact structures 210, the gas can only flow in the direction of the other liquid contact structure 210 with a gap from the shielding structure 220, and finally flow to the top of the diverter device 200. Figure 8 The solid arrows in the middle illustrate the liquid flow path. The liquid (desulfurization solvent or decarbonization solvent, etc.) sprayed above the diverter 200 can directly fall into the liquid receiving tank 201, or can fall on the shielding structure 220 and then flow along the shielding structure to the liquid receiving tank 201. When the gas flows above the diverter 200, it can react with the liquid sprayed above the diverter 200. The liquid sprayed above the diverter 200 will not fall into the area below the diverter 200, allowing the areas above and below the diverter 200 to undergo different gas treatment processes.

[0053] In the solution of this embodiment, by fixedly connecting the shielding structure 220 to one of the two adjacent liquid contact structures 210, the diverter device 200 can allow the gas below to flow above itself and prevent the liquid above from flowing below itself, thereby improving the overall structural strength of the diverter device 200 and helping to reduce the number of parts, thereby facilitating the assembly of the diverter device 200.

[0054] like Figures 6 to 8 As shown, the side wall of the liquid contact structure 210 that forms a gap with the shielding structure 220 is formed with a smooth guide surface 211, that is, a smooth curved guide surface 211, so that the gas can flow through the side wall of the liquid contact structure 210 more smoothly, avoiding gas turbulence and affecting gas fluidity.

[0055] Reference Figure 9 As shown, in one embodiment, the shielding structure 220 includes a portion extending into the liquid receiving tank 201 and below the top of the sidewall of the liquid receiving tank 201, providing a reaction surface 221 for the liquid and gas. Specifically, the portion of the shielding structure 220 extending into the liquid receiving tank 201 is covered with a layer of liquid, and the gas flows along the surface of the portion of the shielding structure 220 extending into the liquid receiving tank 201, thereby reacting with the liquid covering the surface. This provides a reaction surface 221 for the liquid and gas, increasing the gas-liquid contact area and thereby improving the gas-liquid reaction efficiency. Furthermore, this can more effectively prevent liquid from splashing into the flow passage 202.

[0056] Continue to refer to Figure 9 As shown, the portion of the shielding structure 220 extending into the liquid receiving tank 201 is formed with a through hole. Figure 9 The dotted arrows in the middle illustrate the gas flow path. The gas below the diversion device 200 can flow to the shielding structure 220 through the flow channel 202, and then flow toward the bottom of the liquid receiving tank 201 along the portion of the shielding structure 220 extending into the liquid receiving tank 201. When encountering the through hole, the gas passes through the through hole and flows upward along the portion of the shielding structure 220 extending into the liquid receiving tank 201 (refer to Figure 9 As shown by the dotted arrow in FIG. 2 ). Figure 9 The solid arrows in the middle illustrate the liquid flow path. The liquid (desulfurization solvent or decarbonization solvent, etc.) sprayed from the top of the diversion device 200 can fall on the shielding structure 220 and then flow along the portion of the shielding structure 220 that extends into the liquid receiving tank 201 to the bottom of the liquid receiving tank 201. In this way, the gas and liquid react on the surface of the portion of the shielding structure 220 that extends into the liquid receiving tank 201.

[0057] Those skilled in the art will understand that by providing through holes in the portion of the shielding structure 220 extending into the liquid receiving tank 201, the gas can be more dispersed on the surface of the portion of the shielding structure 220 extending into the liquid receiving tank 201, thereby further improving the reaction efficiency of the gas and liquid on the surface of the portion of the shielding structure 220 extending into the liquid receiving tank 201.

[0058] It should be noted that in some other embodiments, when an integral shielding structure is provided, it may also have a portion extending into the liquid receiving tank and lower than the top of the side wall of the liquid receiving tank, that is, the shielding structure as a whole is similar to a sine curve shape.

[0059] like Figure 1 and Figure 2 As shown, in one embodiment, the flue gas treatment device 10 further includes a cooling device 300, the gas processing area within the reaction equipment 100 includes a carbon capture area, the cooling device 300 is arranged on the side of the reaction equipment 100, and at least covers a portion of the carbon capture area, and the cooling device 300 forms a longitudinal cooling air path to cool the carbon capture area via the airflow flowing through the cooling air path, so as to improve the carbon capture reaction efficiency.

[0060] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A diversion device, characterized in that: include: A plurality of liquid receiving structures, each having a liquid receiving groove for receiving liquid from above, wherein the plurality of liquid receiving structures are arranged at intervals so that a flow channel is formed between two adjacent liquid receiving structures; and A shielding structure is arranged above the flow passage, and the shielding structure is used to prevent liquid from above the diverter device from entering the flow passage, and there is a gap between the shielding structure and at least one of the two adjacent liquid contact structures, so that the gas below the diverter device can flow to above the diverter device through the flow passage.

2. The diversion device according to claim 1, characterized in that Each of the air passages corresponds to one of the shielding structures. The shielding structures are curved, with the concave surface of the shielding structure facing the air passage, and the highest point of the shielding structure is aligned with the air passage in the up-down direction.

3. The diversion device according to claim 2, characterized in that The convex surface and the concave surface of the shielding structure are both smooth curved surfaces.

4. The diversion device according to claim 2, characterized in that The shielding structure is fixedly connected to the side wall of one of the two adjacent liquid contact structures, and has a gap with the side wall of the other one.

5. The diversion device according to claim 4, characterized in that: A smooth flow-guiding surface is formed on the side wall of the liquid-contacting structure that forms a gap with the shielding structure.

6. The diversion device according to claim 1, characterized in that The diversion device also includes a liquid collecting container, all the liquid receiving structures are fixedly connected to the liquid collecting container, and all the liquid receiving grooves are communicated with the liquid collecting container, so that the liquid falling into the liquid receiving grooves flows into the liquid collecting container and is collected.

7. The diversion device according to claim 6, characterized in that The liquid receiving trough is arranged to be inclined from high to low along a direction from one end away from the liquid collecting container to the liquid collecting container.

8. The diversion device according to claim 1, characterized in that The shielding structure has a portion extending into the liquid receiving tank and lower than the top end of the side wall of the liquid receiving tank, and is used to provide a reaction surface for liquid and gas.

9. The diversion device according to claim 8, characterized in that A through hole is formed on the portion of the shielding structure extending into the liquid receiving tank.

10. A flue gas treatment device, characterized in that: include: A reaction device is formed with a reaction space; and At least one diverter device according to any one of claims 1 to 9, wherein the diverter device is arranged in the reaction space and is used to separate the reaction space into a plurality of flue gas treatment areas distributed along the longitudinal direction.

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