A gas treatment device

Abstract

The utility model provides a kind of gas treatment device. Including shell, it is formed with reaction space, the side surface bottom of shell is formed with the air inlet being communicated with reaction space, the top surface of shell is formed with the air outlet being communicated with reaction space;And multiple groups of spraying structure, it is set in reaction space, and multiple groups of spraying structure are along longitudinal direction distribution, the position of lowest spraying structure is lower than the highest of air inlet, each group of spraying structure includes at least two slurry delivery pipes, the slurry delivery pipe of lowest spraying structure extends from the side of shell opposite air inlet to the side where air inlet is, slurry delivery pipe is provided with multiple slurry spraying heads, for spraying reaction slurry into reaction space. The present scheme considers the characteristics that flue gas density is easy to deposit, makes full use of the flow attribute of flue gas in transverse direction, cooperates with the spraying structure being set in the bottom area directly opposite air inlet, improves the reaction effect of reaction slurry and flue gas in equipment bottom area.

Description

Technical Field

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

[0002] Industrial processes generate large amounts of flue gas, which needs to be treated and purified before being released into the atmosphere. Facilities for treating this flue gas are called towers, such as desulfurization towers and absorption towers. Flue gas typically enters the treatment tower from the bottom and flows upwards within it, while a reaction solvent is simultaneously introduced. This upward flow of the flue gas allows it to react with the solvent, thus treating the flue gas. To ensure effective flue gas treatment, the treatment tower needs to be relatively tall, requiring greater structural stability and increasing design and construction costs. Utility Model Content

[0003] One objective of this invention is to provide a gas treatment device that helps reduce the height of flue gas treatment towers.

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

[0005] An outer casing having a reaction space, an air inlet communicating with the reaction space being formed on the bottom side of the outer casing, and an air outlet communicating with the reaction space being formed on the top surface of the outer casing; and

[0006] Multiple spray structures are arranged within the reaction space, and the multiple spray structures are distributed longitudinally. The position of the lowest spray structure is lower than the highest point of the air inlet. Each spray structure includes at least two slurry delivery pipes. The slurry delivery pipe of the lowest spray structure extends from the side of the outer shell opposite to the air inlet to the side where the air inlet is located. The slurry delivery pipe is provided with multiple slurry spray heads for spraying reaction slurry into the reaction space.

[0007] Optionally, the top of the two opposite sidewalls of the outer casing distributed along the axis of the air inlet are respectively provided with a contraction inclined portion. The contraction inclined portion is connected to the air outlet, and the contraction inclined portion is inclined in a direction from bottom to top and from the outside of the reaction space to the inside. The angle between the contraction inclined portion and the horizontal plane is set to 4 to 14 degrees.

[0008] Optionally, the top of the two opposite sidewalls of the outer casing, which are distributed in a direction perpendicular to the axis of the air inlet, are respectively provided with inwardly inclined portions. The inwardly inclined portions are connected to the air outlet, and the inwardly inclined portions are inclined in a direction from bottom to top and from the outside of the reaction space to the inside. The angle between the inwardly inclined portions and the horizontal plane is set to 50 to 89 degrees.

[0009] Optionally, the top of the two opposite sidewalls of the outer casing, which are distributed in a direction perpendicular to the axis of the air inlet, are respectively provided with expansion inclined portions. The expansion inclined portions are connected to the air outlet, and the expansion inclined portions are inclined in a direction from bottom to top and from the inside of the reaction space to the outside. The angle between the expansion inclined portions and the horizontal plane is set to 50 to 89 degrees.

[0010] Optionally, each group of spray structures is provided with a corresponding baffle structure, and each baffle structure is located above the corresponding spray structure. The spray head of the slurry conveying pipe is located on the upper side of the slurry conveying pipe to spray the reaction slurry onto the baffle structure.

[0011] The partition structure includes at least one perforated plate to allow gas and liquid to pass through through holes in the perforated plate.

[0012] Optionally, the partition structure includes a support frame and a plurality of perforated plates, the plurality of perforated plates being disposed above the support frame and thus supported by the support frame.

[0013] Optionally, the gas processing apparatus further includes:

[0014] A cleaning water delivery pipe is located below the lowest partition structure. The cleaning water delivery pipe is equipped with multiple spray heads to spray cleaning water onto the lowest partition structure.

[0015] Optionally, the gas processing apparatus further includes:

[0016] A demisting device is disposed within the reaction space and located between the uppermost spray structure and the air outlet, for reducing mist particles in the gas flowing through the demisting device.

[0017] Optionally, the gas processing apparatus further includes:

[0018] A descaling spray head is installed at the air inlet and is used to spray descaling liquid onto the slurry spray head closest to the air inlet on the lowest slurry delivery pipe.

[0019] Optionally, the horizontal dimension of the reaction space in the direction perpendicular to the axis of the air inlet is set to 3.55~8.55 meters.

[0020] Optionally, the dimensions of the reaction space in the air intake direction of the air inlet satisfy the following:

[0021] L is greater than or equal to 0.6Q / (W×3600) and less than or equal to 1.6Q / (W×3600), where L represents the dimension of the reaction space in the air intake direction of the air inlet, in meters; W represents the horizontal dimension of the reaction space in the direction perpendicular to the axis of the air inlet, in meters; and Q represents the standard flue gas flux of the air inlet, in cubic meters per hour.

[0022] This utility model's gas treatment device incorporates multiple spray structures within a reaction space, arranged longitudinally. The lowest spray structure is positioned below the highest point of the air inlet. The slurry delivery pipe extends from the side of the outer shell opposite the air inlet towards the side where the air inlet is located. The lowest spray structure is positioned at the bottom of the reaction space, directly opposite the air inlet along the front-to-back direction of the equipment. When flue gas enters the reaction space through the air inlet, it flows roughly along the axis of the lowest slurry delivery pipe at the bottom of the reaction space, reacting with the reaction slurry sprayed by the multiple slurry spray heads distributed along the extension direction of the slurry delivery pipe. The flue gas also flows upwards, reacting again with the reaction slurry sprayed by the middle and uppermost spray structures, finally exiting the reaction space through the outlet. Therefore, this solution takes into account the characteristics of flue gas density and easy deposition, makes full use of the lateral flow properties of flue gas, and combines it with a spray structure set in the bottom area directly opposite the air inlet to improve the reaction effect of the reaction slurry and flue gas in the bottom area of ​​the equipment. This allows the equipment to have a better flue gas treatment effect by expanding the reaction space laterally, while also helping to reduce the height of the equipment and thus improve its stability.

[0023] Furthermore, by installing a baffle structure above the spray structure, and positioning the slurry spray head of the slurry delivery pipe above the slurry delivery pipe, the reactive slurry is sprayed onto the baffle structure. The slurry, sprayed from the spray head, mixes with the flue gas initially as it moves upwards and upwards at an angle. Upon reaching the baffle structure, some slurry droplets are bounced off and broken, resulting in a second mixing with the flue gas. Because some droplets move downwards or at an angle after bouncing off, they move in the opposite direction to the flue gas, and the collisions break them up, resulting in a better mixing effect for this second mixing. Further, some slurry droplets, including those directly sprayed from the spray head and those formed by bounce and breakage, pass through the through-holes in the baffle structure with the flue gas and enter the orifice plate. The drastic change in velocity during this passage through the through-holes results in a good third mixing. After entering the baffle structure, the droplets form a liquid film or bubble bed on the upper surface of the orifice plate, resulting in a good fourth mixing. At the same time, the impact of the slurry also keeps the partition structure clean and prevents scaling.

[0024] 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

[0025] 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:

[0026] Figure 1 This is a first schematic isometric view of a gas processing device according to an embodiment of the present invention;

[0027] Figure 2 This is a second schematic isometric view of a gas processing device according to an embodiment of the present invention;

[0028] Figure 3 This is a first schematic cross-sectional view of a gas processing device according to an embodiment of the present invention;

[0029] Figure 4 This is a second schematic cross-sectional view of a gas processing device according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of a spray structure in a gas treatment device according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the partition structure in a gas processing device according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of a support frame in a gas processing device according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic cross-sectional view of a filtration device in a gas treatment apparatus according to an embodiment of the present invention;

[0034] Figure 9 This is a partially schematic enlarged view of a gas processing device according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of a pointed hood in a gas handling device according to an embodiment of the present invention;

[0036] Figure 11 This is a partial schematic diagram of the slurry conveying pipe in a gas processing device according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Gas processing device; 100. Outer shell; 101. Reaction space; 102. Air inlet; 103. Air outlet; 104. Sludge collection tank; 110. Main shell; 120. Top shell; 130. Bottom plate; 140. Contraction inclined section; 150. Expansion inclined section; 200. Spray structure; 210. Slurry conveying pipe; 300. Partition structure; 310. Support frame; 320. Orifice plate; 32 1. Through hole; 400. Cleaning water delivery pipe; 410. Cleaning water spray head; 500. Filter device; 510. Container body; 511. Filter chamber; 512. Inlet; 513. Outlet; 520. Filter screen; 610. Descaling spray head; 620. Descaling liquid delivery pipe; 700. Connecting cylinder; 800. Demisting device; 810. Top cover; 811. Air vent plate; 812. Air vent. Detailed Implementation

[0039] 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.

[0040] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "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.

[0041] 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.

[0042] like Figures 1 to 5As shown, in one embodiment, the gas processing device 10 includes a housing 100 and three sets of spray structures 200. The housing 100 forms a reaction space 101, and an air inlet 102 communicating with the reaction space 101 is formed on the bottom side of the housing 100. An air outlet 103 communicating with the reaction space 101 is formed on the top surface of the housing 100. Multiple sets of spray structures 200 are disposed within the reaction space 101 and are distributed longitudinally. The position of the lowest spray structure 200 is lower than the highest point of the air inlet 102. Each set of spray structures 200 includes two slurry delivery pipes 210. The slurry delivery pipe 210 of the lowest spray structure 200 extends from the side of the housing 100 opposite to the air inlet 102 towards the side where the air inlet 102 is located. The slurry delivery pipe 210 is provided with multiple slurry spray heads (not marked in the figure) distributed along its own extension direction for spraying reaction slurry into the reaction space 101.

[0043] Reference Figures 1 to 4 As shown, specifically, the outer shell 100 can be divided into a main shell portion 110, a top shell portion 120, and a bottom plate 130. The main shell portion 110 is cylindrical in shape, open at both the top and bottom. An air inlet 102 is located on one side wall of the main shell portion 110, at the bottom of that side wall. The top shell portion 120 is also open at both the top and bottom, located at the top of the main shell portion 110, thus connecting with the internal space of the main shell portion 110. The top opening of the top shell portion 120 is the air outlet 103. The bottom plate 130 is located at the bottom opening of the main shell portion 110, thus closing the bottom of the main shell portion 110.

[0044] It should be noted that the outer shell 100 is divided into the main shell 110, the top shell 120 and the bottom plate 130 for the purpose of explaining the scheme of this embodiment. The main shell 110, the top shell 120 and the bottom plate 130 can be formed separately or integrally.

[0045] refer to Figures 1 to 4 As shown, for ease of explanation, the side wall where the air inlet 102 is located is defined as the front side wall, and the side wall opposite it is defined as the rear side wall. That is, the air intake direction along the air inlet 102 is the front-rear direction of the equipment, and the lateral direction perpendicular to the air intake direction is the left-right direction of the equipment.

[0046] like Figures 1 to 4 As shown, three sets of spray structures 200 are distributed vertically within the reaction space 101, which can be referred to as the uppermost spray structure 200, the middle spray structure 200, and the lowermost spray structure 200. Each set of spray structures 200 includes two slurry delivery pipes 210, which are distributed horizontally along the equipment.

[0047] Reference Figures 1 to 4As shown, the position of the lowest spray structure 200 is lower than the highest point of the air inlet 102, meaning that the two lowest slurry delivery pipes 210 and the slurry spray heads on them are all lower than the highest point of the air inlet 102. In other words, on the same vertical plane, the highest point of the projection of the lowest spray structure 200 is lower than the highest point of the projection of the air inlet 102. Alternatively, the lowest spray structure 200 is located in the portion of the reaction space 101 at the bottom, directly opposite the air inlet 102 along the front-to-back direction of the equipment.

[0048] In addition, the slurry delivery pipe 210 in each spray structure 200 extends from the rear to the front of the equipment. Specifically, the slurry delivery pipe 210 passes through the rear side wall of the equipment and extends into the reaction space 101, and extends from the rear side wall to the front side wall. For the lowest slurry delivery pipe 210, it extends towards the air inlet 102. Therefore, when the flue gas enters the reaction space 101 through the air inlet 102, at the bottom of the reaction space 101, the flue gas will flow roughly along the axial direction of the lowest slurry delivery pipe 210 through the area where the slurry delivery pipe 210 is located. At this time, the slurry spray head on the slurry delivery pipe 210 delivers the reaction slurry into the reaction space 101, and the reaction slurry reacts with the flue gas. Furthermore, the flue gas will also flow upward and react with the reaction slurry sprayed by the middle spray structure 200 and the uppermost spray structure 200, and finally flow out of the reaction space 101 from the air outlet 103.

[0049] In this embodiment, multiple spray structures 200 are arranged within the reaction space 101, distributed longitudinally. The lowest spray structure 200 is positioned below the highest point of the air inlet 102. The slurry delivery pipe 210 extends from the side of the outer shell 100 opposite to the air inlet 102 towards the side where the air inlet 102 is located. The lowest spray structure 200 is positioned at the bottom of the reaction space 101, directly opposite the air inlet 102 along the front-to-back direction of the equipment. When flue gas enters the reaction space 101 through the air inlet 102, at the bottom of the reaction space 101, the flue gas flows approximately along the axial direction of the lowest slurry delivery pipe 210 through the area where the slurry delivery pipe 210 is located, thereby reacting with the reaction slurry sprayed by the multiple slurry spray heads distributed along the extension direction of the slurry delivery pipe 210. Furthermore, the flue gas will also flow upwards, reacting with the reaction slurry sprayed by the middle and uppermost spray structures 200, and finally flowing out of the reaction space 101 from the outlet 103. Therefore, this solution takes into account the characteristics of flue gas having a high density and being prone to deposition, making full use of the lateral flow properties of the flue gas. Combined with the spray structure 200 set in the bottom area directly opposite the inlet 102, it improves the reaction effect of the reaction slurry and flue gas in the bottom area of ​​the equipment. This allows the equipment to have a better flue gas treatment effect by expanding the reaction space 101 laterally, while also helping to reduce the height of the equipment and thus improve its stability.

[0050] It should be noted that in some other embodiments, the number of spray structures may be two, four or more. The number of slurry delivery pipes in each spray structure may also be three or more.

[0051] Additionally, it should be noted that the slurry delivery pipes of the middle and uppermost spray structures can also deliver the reaction slurry from one side of the air inlet of the reaction space to the opposite side.

[0052] Reference Figure 4 As shown, the horizontal dimension of the reaction space 101 in the direction perpendicular to the axis of the air inlet 102 is set to 3.55~8.55 meters. Specifically, the length of the reaction space 101 in the left-right direction is set to 3.55~8.55 meters, for example, it can be 3.55 meters, 4 meters, 4.56 meters, 5 meters, 5.45 meters, 6 meters, 6.58 meters, 7 meters, 7.54 meters, 8 meters, or 8.55 meters, etc. (Refer to...) Figure 3 The diagram in the middle indicates that... Figure 3 In this context, W represents the horizontal dimension of the reaction space 101 in the direction perpendicular to the axis of the air inlet 102. Furthermore, the dimension of the reaction space 101 in the air inlet 102's intake direction satisfies:

[0053] L is greater than or equal to 0.6Q / (W×3600) and less than or equal to 1.6Q / (W×3600);

[0054] Where L represents the dimension of the reaction space 101 in the air intake direction of the air inlet 102, in meters; W represents the horizontal dimension of the reaction space 101 in the direction perpendicular to the axis of the air inlet 102, in meters; and Q represents the standard flue gas flux of the air inlet 102, in cubic meters per hour.

[0055] For example, if the standard flue gas flow rate is 600,000 cubic meters and the horizontal dimension of the reaction space 101 in the direction perpendicular to the axis of the inlet 102 is 3.8 meters, then the maximum dimension of the reaction space 101 in the direction of the inlet 102 is greater than or equal to 26.32 meters and less than or equal to 70.18 meters.

[0056] By ensuring that the maximum dimension of the reaction space 101 in the air inlet 102 in the air intake direction satisfies: L is greater than or equal to 0.6Q / (W×3600) and less than or equal to 1.6Q / (W×3600), it helps to ensure that the flue gas is fully diffused at the bottom of the reaction space 101 along the air inlet 102 in the air intake direction, thereby ensuring that the space of the reaction space 101 in the air inlet 102 in the air intake direction is fully utilized, and thus achieving a better flue gas treatment effect.

[0057] like Figures 1 to 4 As shown, specifically, a sludge collection tank 104 is provided on the bottom surface of the outer shell 100, and the bottom surface of the outer shell 100 slopes from high to low towards the location of the sludge collection tank 104. Specifically, the sludge collection tank 104 is provided on the bottom plate 130, and the bottom plate 130 slopes towards the sludge collection tank 104. This structure allows sludge and reacted slurry to fall onto the bottom surface of the outer shell 100 and be collected in the sludge collection tank 104, and then discharged from the sludge collection tank 104, which is beneficial for the collection of sludge and reacted slurry and subsequent treatment.

[0058] like Figures 1 to 7 As shown, specifically, each group of spray structures 200 is provided with a corresponding baffle structure 300. Each baffle structure 300 is positioned above the corresponding spray structure 200. The slurry spray head of the slurry delivery pipe 210 is positioned on the upper side of the slurry delivery pipe 210 to spray the reaction slurry onto the baffle structure 300. The baffle structure 300 includes at least one perforated plate 320 to allow gas and liquid to pass through the through holes 321 of the perforated plate 320. Specifically, the baffle structure 300 includes a support frame 310 and a plurality of perforated plates 320, which are positioned above the support frame 310 and thus supported by the support frame 310.

[0059] Reference Figures 1 to 7As shown, specifically, each group of spray structures 200 is provided with a corresponding partition structure 300, that is, there are three partition structures 300, referred to as the uppermost partition structure 300, the middle partition structure 300, and the lowermost partition structure 300. The support frame 310 is fixed to the inner wall of the outer shell 100, and the support frame 310 is in the form of a grid. Multiple perforated plates 320 are installed above the support frame 310, and are thus supported by the grid ribs of the support frame 310.

[0060] In this embodiment, by providing baffle structures 300 above each spray structure 200, the flue gas can flow upwards through the baffle structures 300, while the reaction slurry can fall onto the surface of the orifice plate 320 and diffuse. This allows the surface of the orifice plate 320 to provide a reaction contact surface for the slurry and flue gas, helping to improve the reaction efficiency between the slurry and flue gas. Furthermore, the baffle structures 300, to a certain extent, hinder the upward flow of flue gas, which is beneficial for the full lateral diffusion of the flue gas, thereby further increasing the contact area between the flue gas and the slurry.

[0061] Furthermore, the reaction slurry, sprayed from the slurry spray head, mixes with the flue gas for the first time as it moves upwards and obliquely upwards. Upon reaching the baffle structure 300, some slurry droplets are bounced off and broken by the baffle structure 300, thus mixing with the flue gas for the second time. Because some droplets move downwards or obliquely downwards after bouncing, these droplets move in the opposite direction to the flue gas, and the collision causes them to break, resulting in a better mixing effect for this second mixing. Further, some slurry droplets, including those directly sprayed from the slurry spray head and those formed by bounce and breakage, pass through the through-holes 321 on the orifice plate 320 along with the flue gas and enter the area above the orifice plate 320. The drastic change in velocity during the passage through the through-holes 321 results in a good third mixing. After entering the area above the baffle structure 300, the droplets form a liquid film or bubble bed on the upper surface of the orifice plate 320, thus forming a good fourth mixing. Simultaneously, the impact of the slurry also keeps the baffle structure 300 clean and prevents scaling.

[0062] In addition, by setting up multiple perforated plates 320 supported by the support frame 310, compared with the solution of using a single perforated plate, the perforated plates 320 can be replaced according to the usage of different areas, which improves the flexibility of the use of the perforated plates 320.

[0063] It should be noted that in some other embodiments, a large-hole plate may also be used.

[0064] like Figures 1 to 4As shown, in one embodiment, the gas treatment device 10 further includes a cleaning water delivery pipe 400 disposed below the lowermost partition structure 300. The cleaning water delivery pipe 400 is provided with a plurality of cleaning water spray heads 410 to spray cleaning water onto the lowermost partition structure 300.

[0065] Because the flue gas temperature is highest when it enters the reaction space 101 from the air inlet 102, the bottom orifice plate 320 is more prone to scaling. Therefore, by using the cleaning water delivery pipe 400 and the cleaning water spray head 410 to spray cleaning water onto the bottom partition structure 300, the flue gas temperature is reduced, mitigating the cause of scaling. On the other hand, the sprayed cleaning water can flush away the scale on the bottom orifice plate 320, thereby reducing the scaling rate of the orifice plate 320 and increasing its service life.

[0066] like Figures 1 to 8 As shown, each spray structure 200 is equipped with a corresponding filter device 500. The filter device 500 includes a container body 510 and a filter screen 520. The container body 510 forms a filter chamber 511, and an inlet 512 and an outlet 513 communicating with the filter chamber 511. The inlet 512 is used to receive the raw slurry, and the outlet 513 is used to connect to the slurry delivery pipe 210. The filter screen 520 is disposed inside the filter chamber 511, thereby dividing the filter chamber 511 into two parts, and the inlet 512 and the outlet 513 are located on both sides of the filter screen 520.

[0067] Therefore, the raw slurry entering the filter chamber 511 through the inlet can only reach the outlet after passing through the filter screen 520, and then enter the slurry delivery pipe 210. In other words, the slurry entering the slurry delivery pipe 210 has been filtered, thereby reducing the occurrence of clogging of the slurry delivery pipe 210, especially when the slurry delivery pipe 210 has a tapered structure.

[0068] like Figures 1 to 9 As shown, the gas treatment device 10 also includes a descaling spray head 610, which is located at the air inlet 102 and is used to spray descaling liquid onto the slurry spray head of the lowest slurry delivery pipe 210 closest to the air inlet 102. Specifically, the statement that the descaling spray head 610 is used to spray descaling liquid onto the slurry spray head of the lowest slurry delivery pipe 210 closest to the air inlet 102 means that the descaling liquid sprayed by the descaling spray head 610 can be sprayed onto the slurry spray head of the lowest slurry delivery pipe 210 closest to the air inlet 102, but does not mean that it can only be sprayed onto the slurry spray head of the lowest slurry delivery pipe 210 closest to the air inlet 102. The descaling liquid can be clean water, a solution mixed with a descaling agent, etc.

[0069] Specifically, the gas treatment device 10 includes a docking cylinder 700 and a descaling liquid delivery pipe 620. The docking cylinder 700 is docked and connected to the outer casing 100 at the air inlet 102. The descaling liquid delivery pipe 620 is located outside the docking cylinder 700, and the descaling spray head 610 is connected to the descaling liquid delivery pipe 620 via a connecting pipe passing through the docking cylinder 700, thereby spraying the descaling liquid from the descaling liquid delivery pipe 620 to the lowermost slurry delivery pipe 210.

[0070] Because the flue gas temperature is highest at the air inlet 102, the slurry spray nozzles on the lowest slurry delivery pipe 210 closest to the air inlet 102 are most prone to scaling. Therefore, by installing descaling spray nozzles 610 to spray descaling liquid onto the slurry delivery pipe 210, the slurry spray nozzles on the slurry delivery pipe 210, especially those closest to the air inlet 102, can be descaled during operation, and the flue gas temperature at the air inlet 102 can be reduced, thereby slowing down the scaling rate on the slurry delivery pipe 210 and reducing the occurrence of clogging of the slurry spray nozzles.

[0071] It should be noted that in some other embodiments, the descaling spray head can also be directly installed on the inner side wall of the housing around the air inlet.

[0072] Reference Figures 1 to 9 As shown, the descaling liquid delivery pipe 620 has branch pipes located on the left and right sides of the docking cylinder 700. The gas treatment device 10 includes two descaling spray heads 610, one on each side, which are connected to the branch pipes of the descaling liquid delivery pipe 620 on the left and right sides of the docking cylinder 700 via connecting pipes passing through the left and right walls of the docking cylinder 700. In this way, the slurry spray head can be sprayed from all directions, improving the descaling efficiency.

[0073] like Figures 1 to 10 As shown, the gas treatment device 10 also includes a demister 800, which is disposed within the reaction space 101 and located between the uppermost spray structure 200 and the gas outlet 103, for reducing mist particles in the gas flowing through the demister 800. The demister 800 includes a plurality of pointed hoods 810, the distribution direction of which is perpendicular to the air inlet direction of the air inlet 102. Each pointed hood 810 includes two air passage plates 811, the distribution direction of which is consistent with the distribution direction of the plurality of pointed hoods 810, and the air passage plates 811 are provided with air passage holes 812 for gas to pass through.

[0074] By setting up a demisting device 800 including multiple pointed hoods 810, when gas flows through the demisting device 800, because the air passage plate 811 of the pointed hood 810 blocks the gas, most of the mist particles in the gas are blocked and adsorbed on the air passage plate 811, thereby reducing the number of mist particles in the gas.

[0075] Reference Figures 1 to 10 As shown, in this embodiment, the flue gas to be treated enters the reaction space 101 through the inlet 102. The flue gas diffuses longitudinally and in directions away from the inlet 102 along the axis of the inlet 102. Simultaneously, multiple filter devices 500 receive the raw slurry. After being filtered by the filter screen 520, the raw slurry enters the slurry delivery pipe 210 of the corresponding spray structure 200, and is then sprayed into the reaction space 101 via the slurry spray head on the slurry delivery pipe 210. The slurry sprayed into the reaction space 101 reacts with the flue gas. Furthermore, the slurry delivery pipe 210 sprays the slurry onto the perforated plate 320 of the corresponding partition structure 300. The slurry diffuses on the perforated plate 320, while the flue gas diffuses on the surface of the perforated plate 320 due to the obstruction of the perforated plate 320, causing the flue gas and slurry to contact and react on the surface of the perforated plate 320, increasing the contact area between the slurry and flue gas. At the same time, the cleaning water delivery pipe 400 sprays cleaning water onto the lowest partition structure 300 to clean the scale on the lowest partition structure 300.

[0076] After passing through multiple spray structures 200 and baffle structures 300, the flue gas continues to flow upward to the demister 800, where mist particles in the flue gas are blocked and adsorbed onto the air passage plate 811, thereby reducing the number of mist particles in the gas. Finally, the treated flue gas is discharged from the outlet 103 to the outside of the reaction space 101. In addition, the descaling spray head 610 at the air inlet 102 sprays descaling liquid onto the lowest slurry delivery pipe 210, reducing the scaling rate of the slurry spray head on the lowest slurry delivery pipe 210 and ensuring good spraying efficiency for a longer period of time.

[0077] The gas processing apparatus of this embodiment will now be further described with reference to the accompanying drawings.

[0078] like Figures 1 to 4 As shown, in one embodiment, the top of two opposing sidewalls of the outer casing 100, distributed along the axial direction of the air inlet 102, are respectively provided with constriction inclined portions 140. The constriction inclined portions 140 are connected to the air outlet 103, and the constriction inclined portions 140 are inclined in a direction from bottom to top and from the outside of the reaction space 101 to the inside. The angle between the constriction inclined portions 140 and the horizontal plane is set to 4 to 14 degrees. For example, it can be 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, or 14 degrees, etc.

[0079] like Figures 1 to 4As shown, specifically, the top of the front and rear sidewalls of the outer shell 100 are respectively formed with contraction-inclined portions 140, or in other words, the front and rear sidewalls of the top shell portion 120 constitute contraction-inclined portions 140. The contraction-inclined portions 140 are inclined in a direction from bottom to top and from the outside to the inside of the reaction space 101. That is, the front contraction-inclined portion 140 is inclined to the rearward and upward, and the rear contraction-inclined portion 140 is inclined to the frontward and upward, so that the two contraction-inclined portions 140 are in a contraction shape from bottom to top.

[0080] By providing converging inclined portions 140 on the top of the two opposite sidewalls of the outer casing 100 distributed along the axial direction of the air inlet 102, it is beneficial to form a gathering effect on the flue gas in the air inlet 102 direction, which is conducive to the discharge of the flue gas from the air outlet 103.

[0081] like Figures 1 to 4 As shown, the top of two opposing sidewalls of the outer casing 100, distributed perpendicularly to the axis of the air inlet 102, are respectively provided with expansion inclined portions 150. The expansion inclined portions 150 are connected to the air outlet 103, and the expansion inclined portions 150 are inclined in a direction from bottom to top and from the inside of the reaction space 101 to the outside. The angle between the expansion inclined portions 150 and the horizontal plane is set to 50 to 89 degrees. For example, it can be 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, 85 degrees, or 89 degrees, etc.

[0082] like Figures 1 to 4 As shown, specifically, expansion inclined portions 150 are formed on the top of the left and right side walls of the outer shell 100, or in other words, the left and right side walls of the top shell 120 constitute expansion inclined portions 150. The expansion inclined portions 150 are inclined in a direction from bottom to top and from the inside of the reaction space 101 outward. That is, the expansion inclined portion 150 on the left tilts to the upper left and the expansion inclined portion 150 on the right tilts to the upper right, so that the two expansion inclined portions 150 are expanded from bottom to top.

[0083] In this embodiment, by providing expansion inclined portions 150 on the top of the two side walls of the housing 100 perpendicular to the axis of the air inlet 102, it is helpful to connect to components with larger volumes.

[0084] It should be noted that in some other embodiments, the top of the two opposite sidewalls of the outer shell distributed in a direction perpendicular to the axis of the air inlet are respectively provided with inwardly inclined portions. The inwardly inclined portions are connected to the air outlet, and the inwardly inclined portions are inclined in a direction from bottom to top and from the outside of the reaction space to the inside. The angle between the inwardly inclined portions and the horizontal plane is set to 50 to 89 degrees.

[0085] like Figures 1 to 5 ,as well as Figure 11As shown, the slurry delivery pipe 210 becomes increasingly thinner along the direction pointing towards the air inlet 102. Specifically, each slurry delivery pipe 210 has multiple pipe segments connected sequentially along the direction pointing towards the air inlet 102, and the diameter of the pipe segments decreases sequentially along the direction pointing towards the air inlet 102.

[0086] Those skilled in the art will understand that by making the slurry delivery pipe 210 gradually narrower in the direction pointing towards the air inlet 102, that is, by making the flow path of the slurry gradually narrower as it flows through the slurry delivery pipe 210, the narrowing of the pipe helps to increase the slurry flow rate, thus helping to maintain good fluidity of the slurry in the longer slurry delivery pipe 210, helping to reduce the required pumping energy consumption, and making all the slurry spray heads on the slurry delivery pipe 210 have a relatively uniform spraying effect.

[0087] In addition, by using multiple pipe sections to gradually narrow the slurry delivery pipe 210, that is, by reducing the pipe diameter in a stepwise manner, the flow rate and pressure can be gradually adjusted to make the velocity distribution more uniform.

[0088] It should be noted that in some other embodiments, the slurry delivery pipe may also gradually taper continuously in the direction pointing towards the air inlet.

[0089] like Figures 1 to 5 ,as well as Figure 11 As shown, specifically, along the direction pointing towards the air inlet 102, the ratio of the diameters of two adjacent pipe sections of the slurry conveying pipe 210 is 1.1 to 1.8. Specifically, for two adjacent pipe sections of the slurry conveying pipe 210, the ratio of the diameter of the section farther from the air inlet 102 to the diameter of the section closer to the air inlet 102 is 1.1 to 1.8. (Refer to...) Figure 11 As shown, R1 is the pipe diameter of the pipe segment farther from the air inlet 102 among two adjacent pipe segments, and R2 is the pipe diameter of the pipe segment closer to the air inlet 102 among two adjacent pipe segments. The value of R1 / R2 is between 1.1 and 1.8, for example, it can be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7 or 1.8, etc.

[0090] By setting the diameter ratio of two adjacent pipe sections of the slurry delivery pipe 210 in the direction pointing towards the air inlet 102 to 1.1 to 1.8, it helps to achieve a better speed increase for the slurry and effectively reduces turbulence caused by excessive changes in pipe diameter, thus enabling the slurry delivery pipe 210 to have a suitable effect on regulating the flow rate.

[0091] Preferably, the ratio of the diameters of two adjacent pipe sections of the slurry conveying pipe 210 in the direction pointing towards the air inlet 102 is 1.2 to 1.5.

[0092] like Figures 1 to 5 ,as well as Figure 11As shown, for each segment of the slurry conveying pipe 210, the ratio of the pipe diameter to the length of the segment is 4.0% to 8.0%, for example, it can also be 4.0%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5.0%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9%, 6.0%, 6.1%, 6.2%, 6.3%, 6.4%, 6.5%, 6.6%, 6.7%, 6.8%, 6.9%, 7.0%, 7.1%, 7.2%, 7.3%, 7.4%, 7.5%, 7.6%, 7.7%, 7.8%, 7.9%, or 8.0%, etc. (Refer to...) Figure 11 Taking a complete pipe segment as an example, the pipe diameter is R1, the length of the pipe segment is L1, and the value of R1 / L1 is 4.0%~8.0%.

[0093] By setting the diameter-to-length ratio of each segment of the slurry delivery pipe 210 to 4.0%~8.0%, the slurry can be fully developed within each segment to achieve stable flow, thereby reducing the probability of turbulence at the junction with the next segment. Furthermore, this helps avoid excessively long flow times within each segment, which could lead to a significant increase in frictional resistance, thus ensuring a better linear velocity variation.

[0094] Preferably, the ratio of the diameter to the length of each segment of the slurry conveying pipe 210 is 4.2% to 7.5%.

[0095] like Figures 1 to 5 ,as well as Figure 11 As shown, specifically, along the direction pointing towards the air inlet 102, the length of the slurry delivery pipe 210 decreases progressively; in other words, the longer of the thicker section among two adjacent sections of the slurry delivery pipe 210 is greater than the longer of the thinner section. This design helps to reduce the overall resistance experienced by the slurry within the slurry delivery pipe 210, thereby reducing energy loss.

[0096] like Figures 1 to 4 ,as well as Figure 6 As shown, the orifice plate 320 is inclined from bottom to top in the direction pointing towards the air inlet 102. That is, in the direction from back to front of the equipment, the orifice plate 320 is inclined from bottom to top, so that the part of the orifice plate 320 further away from the air inlet 102 in the front-back direction of the equipment is lower.

[0097] By tilting the orifice plate 320, it helps guide the flue gas to flow downwards along the inlet direction, thereby extending the flow time of the flue gas within the reaction space 101 and increasing the reaction time between the flue gas and the slurry, resulting in a more complete reaction. Furthermore, the slurry falling onto the orifice plate 320 flows along the tilt direction of the orifice plate 320, which facilitates more complete diffusion of the slurry on the surface of the orifice plate 320. The flowing slurry also helps reduce the scaling rate on the orifice plate 320, thus extending the service life of the orifice plate 320.

[0098] Reference Figures 1 to 4 ,as well as Figure 6 As shown, the acute angles formed by the top and bottom surfaces of the orifice plate 320 with the horizontal plane are set to 0.5 to 5 degrees, for example, 0.5 degrees, 1 degree, 1.5 degrees, 2 degrees, 2.5 degrees, 3 degrees, 3.5 degrees, 4 degrees, 4.5 degrees, or 5 degrees, etc. This design makes the tilt angle of the orifice plate 320 more suitable, achieving better results while reducing installation difficulties.

[0099] Preferably, the acute angle formed by the top and bottom surfaces of the perforated plate 320 with the horizontal plane is set to 1.5 to 3 degrees.

[0100] Reference Figures 1 to 4 ,as well as Figure 6 As shown, the aperture of the through hole 321 of the perforated plate 320 is set to 1~6 mm, for example, it can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm or 6 mm, etc., so as to achieve a better air passage effect and a guiding effect on flue gas.

[0101] Preferably, the diameter of the through hole 321 of the perforated plate 320 is set to 3~4 mm.

[0102] Reference Figures 1 to 4 As shown, specifically, the bottom sidewall of the docking cylinder 700 slopes downwards along the direction close to the air inlet 102, thereby preventing the liquid sprayed by the descaling spray head 610 from flowing back to other components and causing damage to other components such as the pump.

[0103] 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 gas processing device, characterized in that, include: The outer shell has a reaction space, and an air inlet communicating with the reaction space is formed on the bottom side of the outer shell, and an air outlet communicating with the reaction space is formed on the top surface of the outer shell. and Multiple spray structures are arranged within the reaction space, and the multiple spray structures are distributed longitudinally. The position of the lowest spray structure is lower than the highest point of the air inlet. Each spray structure includes at least two slurry delivery pipes. The slurry delivery pipe of the lowest spray structure extends from the side of the outer shell opposite to the air inlet to the side where the air inlet is located. The slurry delivery pipe is provided with multiple slurry spray heads for spraying reaction slurry into the reaction space.

2. The gas processing device according to claim 1, characterized in that, The top of the two opposite sidewalls of the outer shell distributed along the axis of the air inlet are respectively provided with a contraction inclined part. The contraction inclined part is connected to the air outlet, and the contraction inclined part is inclined in a direction from bottom to top and from the outside of the reaction space to the inside. The angle between the contraction inclined part and the horizontal plane is set to 4 to 14 degrees.

3. The gas processing apparatus according to claim 2, characterized in that, The top of the two opposite sidewalls of the outer shell, which are distributed in a direction perpendicular to the axis of the air inlet, are respectively provided with inwardly inclined portions. The inwardly inclined portions are connected to the air outlet, and the inwardly inclined portions are inclined in a direction from bottom to top and from the outside of the reaction space to the inside. The angle between the inwardly inclined portions and the horizontal plane is set to 50 to 89 degrees.

4. The gas processing apparatus according to claim 2, characterized in that, The top of the two opposite sidewalls of the outer shell, which are distributed in a direction perpendicular to the axis of the air inlet, are respectively provided with expansion inclined portions. The expansion inclined portions are connected to the air outlet, and the expansion inclined portions are inclined in a direction from bottom to top and from the inside of the reaction space to the outside. The angle between the expansion inclined portions and the horizontal plane is set to 50 to 89 degrees.

5. The gas processing apparatus according to claim 1, characterized in that, Each group of spray structures is provided with a corresponding baffle structure. Each baffle structure is located above the corresponding spray structure. The slurry spray head of the slurry conveying pipe is located on the upper side of the slurry conveying pipe to spray the reaction slurry onto the baffle structure. The partition structure includes at least one perforated plate to allow gas and liquid to pass through through holes in the perforated plate.

6. The gas processing apparatus according to claim 5, characterized in that, The partition structure includes a support frame and a plurality of perforated plates, which are disposed above the support frame and thus supported by the support frame.

7. The gas processing apparatus according to claim 5, characterized in that, Also includes: A cleaning water delivery pipe is located below the lowest partition structure. The cleaning water delivery pipe is equipped with multiple spray heads to spray cleaning water onto the lowest partition structure.

8. The gas processing apparatus according to claim 1, characterized in that, Also includes: A demisting device is disposed within the reaction space and located between the uppermost spray structure and the air outlet, for reducing mist particles in the gas flowing through the demisting device.

9. The gas processing apparatus according to claim 1, characterized in that, Also includes: A descaling spray head is installed at the air inlet and is used to spray descaling liquid onto the slurry spray head closest to the air inlet on the lowest slurry delivery pipe.

10. The gas processing apparatus according to claim 1, characterized in that, The horizontal dimension of the reaction space in the direction perpendicular to the air inlet axis is set to 3.55~8.55 meters.

11. The gas processing apparatus according to claim 1, characterized in that, The dimensions of the reaction space in the air inlet direction satisfy the following: L is greater than or equal to 0.6Q / (W×3600) and less than or equal to 1.6Q / (W×3600), where L represents the dimension of the reaction space in the air intake direction of the air inlet, in meters; W represents the horizontal dimension of the reaction space in the direction perpendicular to the axis of the air inlet, in meters; and Q represents the standard flue gas flux of the air inlet, in cubic meters per hour.

Images