Gas-liquid mixing device and flue gas treatment equipment

Abstract

The utility model provides a gas-liquid mixing device and flue gas treatment equipment. The gas-liquid mixing device comprises: a liquid separation plate provided with a plurality of through holes; the packing piece is arranged on the bottom side of the liquid separation plate, a plurality of liquid inlets are formed in the top face of the packing piece, a plurality of liquid outlets are formed in the bottom face of the packing piece, the liquid inlets are used for allowing liquid to enter the packing piece, the liquid outlets are used for allowing the liquid to flow out of the packing piece, a plurality of flow guide protrusions are arranged on the top face of the packing piece, and the top ends of the flow guide protrusions make contact with the bottom face of the liquid separation plate. The liquid separation plate can disperse a reaction solvent and flow downwards from the through holes, and a layer of water film can be formed on the bottom surface of the liquid separation plate along with flowing of the reaction solvent from the through holes. Due to the fact that the flow guide protrusions make contact with the bottom face of the liquid separation plate, after the formed water film makes contact with the flow guide protrusions, the formed water film can flow around the flow guide protrusions under the guidance of the surfaces of the flow guide protrusions, the reaction solvent can evenly enter the packing piece from all the liquid inlets, and the gas-liquid reaction efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas -liquid reaction technical field especially, and it is a kind of gas -liquid mixing device and flue gas treatment equipment. BACKGROUND

[0002] For the large amount of flue gas generated by factory, it needs to be discharged after being treated and purified. Generally, the generated flue gas will be introduced into the absorption tower, and the reaction solvent will be sprayed in the absorption tower. The reaction solvent reacts with the flue gas in the absorption tower, and the reaction solvent absorbs sulfide or carbonide in the flue gas, thereby realizing the purification of the flue gas. In the actual application process, how to improve the reaction efficiency between gas and liquid is one of the important technical directions of flue gas treatment technology research. UTILITY MODEL CONTENT

[0003] One object of the utility model is to provide a kind of gas-liquid mixing device and flue gas treatment equipment capable of improving gas-liquid reaction efficiency.

[0004] In particular, the utility model provides a kind of gas-liquid mixing device, comprising:

[0005] The liquid distribution plate is provided with a plurality of through holes; and

[0006] The filler is arranged on the bottom side of the liquid distribution plate, the top surface of the filler is formed with a plurality of liquid inlets, the bottom surface is formed with a plurality of liquid outlets, the plurality of liquid inlets are used for liquid to enter the filler, the liquid outlet is used for liquid to flow out of the filler, and the top surface of the filler is provided with a plurality of flow guide protrusions, and the top end of the flow guide protrusion is in contact with the bottom surface of the liquid distribution plate.

[0007] Optionally, the surface of the flow guide protrusion is a smooth curved surface.

[0008] Optionally, the surface of the flow guide protrusion is part of a spherical surface.

[0009] Optionally, the liquid inlets and the flow guide protrusions are arranged in an array, and each row of flow guide protrusions is arranged between adjacent two rows of liquid inlets, and each column of flow guide protrusions is arranged between adjacent two columns of liquid inlets.

[0010] Optionally, the edge of the flow guide protrusion is in contact with the edge of the liquid inlet.

[0011] Optionally, the through holes are staggered with the liquid inlets in the up-down direction.

[0012] Optionally, the thickness of the liquid distribution plate is greater than or equal to 0.5mm and less than or equal to 10mm.

[0013] Optionally, the surface of the flow guide protrusion is a frosted surface.

[0014] In another aspect of the present application, a flue gas treatment device is also provided, comprising:

[0015] a reaction tower, which is internally provided with a reaction space; and

[0016] at least one gas-liquid mixing device according to any one of the above, which is arranged in the reaction space.

[0017] Optionally, the flue gas treatment device comprises a plurality of gas-liquid mixing devices, which are stacked in the reaction space in the up-down direction.

[0018] The gas-liquid mixing device and the flue gas treatment device of the present application set the packing member at the bottom side of the distribution plate, set the flow guide protrusion at the top surface of the packing member, so that the flow guide protrusion is in contact with the bottom surface of the distribution plate. When the reaction solvent falls on the top surface of the distribution plate, the distribution plate can disperse the reaction solvent and flow downward from the plurality of through holes. With the reaction solvent flowing downward from the through holes, a layer of water film is formed on the bottom surface of the distribution plate. Because the flow guide protrusion is in contact with the bottom surface of the distribution plate, when the formed water film contacts the flow guide protrusion, it will flow around the flow guide protrusion under the guidance of the surface of the flow guide protrusion, thereby uniformly dispersing the reaction solvent around, so that the reaction solvent enters the inside of the packing member from each liquid inlet more uniformly. Therefore, the reaction solvent at each part of the packing member is more uniform, reducing the case that the entity surface of the packing member is not fully utilized due to over-thickness or over-thinness of the reaction solvent at a certain place, thereby helping the gas and the reaction solvent to effectively react at each part of the packing member, and being beneficial to improving the gas-liquid reaction efficiency.

[0019] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Some embodiments of the present application will be described in detail with reference to the accompanying drawings, wherein the same or like components have the same reference numerals, and wherein:

[0021] Figure 1 is a schematic view of a flue gas treatment device according to an embodiment of the present application;

[0022] Figure 2 is a schematic sectional view of a gas-liquid mixing device according to an embodiment of the present application;

[0023] Figure 3 is a schematic top view of a packing member in a gas-liquid mixing device according to another embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the packing element in a gas-liquid mixing device according to another embodiment of the present invention. Detailed Implementation

[0025] 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.

[0026] 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] 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 direct connection, an indirect connection through an intermediate medium, or a connection within 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.

[0028] like Figure 1 As shown, in one embodiment, the flue gas treatment device 10 includes a reaction tower 100 and a gas-liquid mixing device 200. A reaction space 101 is provided inside the reaction tower 100. The gas-liquid mixing device 200 is disposed within the reaction space 101. The flue gas treatment device 10 also includes a spraying device 300, which is disposed above the gas-liquid mixing device 200 and is used to spray a reaction solvent into the reaction space 101. Flue gas enters the reaction space 101 from the bottom of the reaction tower 100 and reacts with the reaction solvent as it flows upward. The gas-liquid mixing device 200 allows liquid and gas to pass through in the vertical direction, and the sprayed reaction solvent can adhere to the surface of the gas-liquid mixing device 200, increasing the contact area with the flue gas and thus improving the reaction efficiency.

[0029] As shown in Figure 1 and Figure 2 , in one embodiment, the gas-liquid mixing device 200 includes a distribution plate 210 and a packing member 220. The distribution plate 210 is provided with a plurality of through holes 211. The packing member 220 is arranged on the bottom side of the distribution plate 210, and the top surface of the packing member 220 is formed with a plurality of liquid inlets 221 and the bottom surface is formed with a plurality of liquid outlets 222. The plurality of liquid inlets 221 are used for liquid to enter the packing member 220, the liquid outlets 222 are used for liquid to flow out of the packing member 220, and the top surface of the packing member 220 is provided with a plurality of flow guide protrusions 223, and the top end of the flow guide protrusions 223 is in contact with the bottom surface of the distribution plate 210.

[0030] Referring to Figures 1 to 2 , in particular, the packing member 220 is a porous material and is formed with a plurality of holes. It should be noted that, Figure 2 the liquid inlets 221 and the liquid outlets 222 are directly communicated in the embodiment, which is only a convenient display example, and in other embodiments, the holes in the packing member 220 can be irregular holes, so that the liquid and gas flow can pass through the packing member 220 in the up-down direction. In addition, the material of the packing member 220 including the flow guide protrusions 223 can be plastic, ceramic, etc.

[0031] Continuing to refer to Figure 1 and Figure 2 , the flow guide protrusions 223 form a point contact or a surface contact with the bottom surface of the distribution plate 210. In particular, the surface of the flow guide protrusions 223 is arranged as part of a spherical surface, and the top end of the flow guide protrusions 223 forms a point contact with the bottom surface of the distribution plate 210, that is, the flow guide protrusions 223 are tangent to the bottom surface of the distribution plate 210.

[0032] Referring to Figure 1 and Figure 2As shown, in the process of treating the flue gas, the reaction solvent sprayed by the spraying device 300 first falls on the distribution plate 210, part of the reaction solvent adheres to the top surface of the distribution plate 210, and part of the reaction solvent flows down from the through hole 211. As the reaction solvent flows down from the through hole 211, a layer of water film is formed on the bottom surface of the distribution plate 210. Because the flow guide protrusion 223 is in contact with the bottom surface of the distribution plate 210, when the formed water film contacts the flow guide protrusion 223, the water film flows around the flow guide protrusion 223 under the guidance of the surface of the flow guide protrusion 223, thereby uniformly dispersing the reaction solvent around. The reaction solvent can enter the inside of the filler piece 220 from the liquid inlet 221, flow in the hole to adhere to the solid part of the filler piece 220, and finally flow out from the liquid outlet 222. The flue gas enters the inside of the filler piece 220 from the liquid outlet 222 at the bottom of the filler piece 220, flows in the hole, and reacts with the reaction solvent adhering to the solid part of the filler piece 220. Then, the flue gas flows out from the top surface of the filler piece 220 and continues to flow upwards through the through hole 211 of the distribution plate 210. During this period, the flue gas can also react with the reaction solvent adhering to the top surface and the bottom surface of the distribution plate 210.

[0033] In the scheme of the present embodiment, by arranging the filler piece 220 on the bottom side of the distribution plate 210 and arranging the flow guide protrusion 223 on the top surface of the filler piece 220, the flow guide protrusion 223 is in contact with the bottom surface of the distribution plate 210. When the reaction solvent falls on the top surface of the distribution plate 210, the distribution plate 210 can disperse the reaction solvent and flow downward from the plurality of through holes 211. As the reaction solvent flows down from the through hole 211, a layer of water film is formed on the bottom surface of the distribution plate 210. Because the flow guide protrusion 223 is in contact with the bottom surface of the distribution plate 210, when the formed water film contacts the flow guide protrusion 223, the water film flows around the flow guide protrusion 223 under the guidance of the surface of the flow guide protrusion 223, thereby uniformly dispersing the reaction solvent around, so that the reaction solvent more uniformly enters the inside of the filler piece 220 from each liquid inlet 221. Therefore, the reaction solvent is more uniform at each part of the filler piece 220, reducing the case that the solid surface of the filler piece 220 is not fully utilized due to the over-thickness or over-thin of the reaction solvent at a certain place, thereby helping to make the gas and the reaction solvent effectively react at each part of the filler piece 220, and helping to improve the gas-liquid reaction efficiency. Moreover, the flue gas can react with the reaction solvent on the surface of the filler piece 220 and on the top surface and the bottom surface of the distribution plate 210 during the process of flowing through the gas-liquid mixing device 200, which helps to increase the contact area and improve the reaction efficiency.

[0034] As Figure 1 and Figure 2As shown, the edge of the flow guide protrusion 223 is connected with the edge of the liquid inlet 221, and the planar part of the top surface of the filler 220 is reduced, so as to help the flow guide protrusion 223 to directly guide part of the reaction solvent into the liquid inlet 221, ensure the flow guide effect of the flow guide protrusion 223, and avoid the reaction solvent from accumulating too thick on the planar surface.

[0035] Referring to Figure 1 and Figure 2 As shown, the thickness of the liquid distribution plate 210 is greater than or equal to 0.5 mm and less than or equal to 10 mm, for example, can be 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm. The above setting ensures that the liquid distribution plate 210 has appropriate structural strength while making the bottom surface of the liquid distribution plate 210 more easily form a water film.

[0036] Referring to Figure 1 and Figure 2 As shown, the surface of the flow guide protrusion 223 is provided as an abrasive surface. By providing the surface of the flow guide protrusion 223 as an abrasive surface, the water guiding property of the surface of the flow guide protrusion 223 is better, so that the flow guide protrusion 223 can better guide the flow and assist the bottom surface of the liquid distribution plate 210 to form a water film.

[0037] Referring to Figure 3 As shown, in one embodiment, the surface of the flow guide protrusion 223 is provided as part of a spherical surface. The liquid inlets 221 and the flow guide protrusions 223 are arranged in an array, and each row of flow guide protrusions 223 is arranged between adjacent two rows of liquid inlets 221, and each column of flow guide protrusions 223 is arranged between adjacent two columns of liquid inlets 221. In this way, there are four liquid inlets 221 around the flow guide protrusion 223, which cooperates with the spherical surface of the flow guide protrusion 223 to help improve the dispersion effect of the flow guide protrusion 223 on the reaction solvent.

[0038] Referring to Figure 3 As shown, in one embodiment, the through holes are staggered with the liquid inlets 221 in the up-down direction. That is, in the up-down direction, the through holes do not overlap with the liquid inlets 221, so that the reaction solvent is dispersed as much as possible before entering the liquid inlets 221, improving the dispersion uniformity.

[0039] As Figure 4 shown, in one embodiment, the top surface of the flow guide protrusion 223 is provided as part of a cylindrical side surface, so as to form a line contact with the bottom surface of the liquid distribution plate. At the same time, the liquid inlets 221 of the filler 220 are arranged in an array, and the flow guide protrusions 223 are arranged between adjacent two rows of liquid inlets 221, and the extension direction is the same as the distribution direction of each row of liquid inlets 221. The line contact of the flow guide protrusion 223 with the bottom surface of the liquid distribution plate 210 can also achieve the effect in the above embodiment.

[0040] It should be noted that in other embodiments, the surface of the flow guide protrusion can also be other smooth curved surfaces. Alternatively, it can also be an upper and lower inclined plane, for example, the flow guide protrusion is in the shape of a pyramid.

[0041] Although not shown in the figure, in some embodiments, the flue gas treatment device can include a plurality of gas-liquid mixing devices stacked in the up-down direction in the reaction space, that is, the top surface of the distribution plate of the lower gas-liquid mixing device is in contact with the bottom surface of the packing piece of the upper gas-liquid mixing device, thereby further improving the reaction solvent dispersion effect.

[0042] At this point, those skilled in the art should recognize that although the present application has been shown and described in detail in the above embodiments, many other variations or modifications can be directly determined or deduced according to the disclosure of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variations or modifications.

Claims

1. A gas-liquid mixing device, characterized by, The gas-liquid mixing device comprises: a distribution plate provided with a plurality of through holes; and a filler provided on the bottom side of the distribution plate, the top surface of the filler being provided with a plurality of liquid inlets for liquid to enter the filler, the bottom surface of the filler being provided with a plurality of liquid outlets for liquid to flow out of the filler, and the top surface of the filler being provided with a plurality of flow guide protrusions, the top ends of the flow guide protrusions being in contact with the bottom surface of the distribution plate.

2. The gas-liquid mixing device according to claim 1, wherein the surface of the flow guide protrusion is provided as a smooth curved surface.

3. The gas-liquid mixing device according to claim 2, wherein the surface of the flow guide protrusion is provided as a part of a spherical surface.

4. The gas-liquid mixing device according to claim 3, wherein the liquid inlets and the flow guide protrusions are arranged in an array, and each row of the flow guide protrusions is arranged between two adjacent rows of the liquid inlets, and each column of the flow guide protrusions is arranged between two adjacent columns of the liquid inlets.

5. The gas-liquid mixing device according to claim 2, wherein the edge of the flow guide protrusion is in contact with the edge of the liquid inlet.

6. The gas-liquid mixing device according to claim 1, wherein the through holes and the liquid inlets are staggered in the up-down direction.

7. The gas-liquid mixing device according to claim 1, wherein the thickness of the distribution plate is greater than or equal to 0.5 mm and less than or equal to 10 mm.

8. The gas-liquid mixing device according to claim 1, wherein the surface of the flow guide protrusion is provided as an abrasive surface.

9. A flue gas treatment apparatus, characterized by The gas-liquid mixing device comprises: a reaction tower provided with a reaction space inside; and at least one gas-liquid mixing device according to any one of claims 1 to 8, the gas-liquid mixing device being arranged in the reaction space.

10. The flue gas treatment device according to claim 9, wherein the flue gas treatment device comprises a plurality of gas-liquid mixing devices, the plurality of gas-liquid mixing devices being stacked in the up-down direction in the reaction space.

Images