Wet desulfurization tower

Abstract

The utility model relates to a wet desulfurization tower which comprises a tower body, a demister, a spraying mechanism and a tray, and the demister, the spraying mechanism and the tray are arranged in the tower body at intervals from top to bottom; a gas inlet located below the tray and a gas outlet located above the demister are formed in the tower body, the tray comprises a first base part and a plurality of fan blades, and the fan blades are arranged on the first base part at intervals in the circumferential direction of the first base part; the first base part is rotatably connected in the tower body. The first base part is rotatably connected into the tower body, when flue gas flows from bottom to top and passes through the tray, the tray can be rotated, and when the tray rotates, the adhesive force of slurry can be reduced by utilizing centrifugal force, so that the slurry gathered on the tray can be reduced, the cleaning period of the tray can be prolonged, and the desulfurization efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of desulfurization technology, and in particular to a wet desulfurization tower. Background Art

[0002] The desulfurization tower is a device for desulfurizing industrial flue gas. It is widely used in flue gas desulfurization in the domestic coal-fired industry. The desulfurization tower can prevent the discharge of sulfur-containing flue gas and cause atmospheric pollution. The gas desulfurized by the desulfurization tower is harmless to the environment and is more environmentally friendly. After the flue gas enters the desulfurization tower, it moves from bottom to top. The through holes set on the tray can make the passing flue gas more evenly distributed, thereby improving the desulfurization efficiency.

[0003] In wet flue gas desulfurization, the tray is generally installed under the spray mechanism. During the spraying process, part of the slurry will gather on the tray. Long-term spraying will easily cause too much slurry to gather on the tray, thereby affecting the absorption of sulfur. The tray needs to be cleaned regularly, which affects the desulfurization efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a wet desulfurization tower that can reduce the slurry accumulated on the tray, extend the cleaning cycle of the tray, and improve the desulfurization efficiency.

[0005] A wet desulfurization tower comprises a tower body, a demister, a spray mechanism and a tray, wherein the demister, the spray mechanism and the tray are arranged in the tower body from top to bottom at intervals;

[0006] An air inlet and an air outlet are provided on the tower body, wherein the air inlet is located below the tray, and the air outlet is located above the demister;

[0007] The tray includes a first base and a plurality of fan blades, wherein the plurality of fan blades are arranged on the first base at intervals along the circumference of the first base; the first base is rotatably connected to the tower body.

[0008] In the above scheme, the demister, the spray mechanism and the tray are arranged in the tower body from top to bottom, and the air inlet is located below the tray and the air outlet is located above the demister, so that the flue gas can enter the inner cavity from the air inlet and then flow from bottom to top. The slurry sprayed by the spray mechanism falls from top to bottom, and the flue gas and the slurry are mixed at the position between the spray mechanism and the air inlet, and the slurry can remove the sulfur in the flue gas. As the flue gas continues to rise and passes through the demister, the demister will block the slurry mixed in the flue gas to prevent the slurry from being discharged through the outlet along with the flue gas. The slurry blocked by the demister will fall back, and while falling back, it will continue to neutralize the sulfur dioxide in the rising flue gas, thereby further improving the desulfurization effect. By rotatably connecting the first base to the tower body, the flue gas flows from bottom to top and when passing through the tray, the tray can be rotated. When the tray rotates, the centrifugal force can be used to reduce the adhesion of the slurry, thereby reducing the slurry accumulated on the tray. At the same time, the cleaning cycle of the tray can be extended, thereby improving the desulfurization efficiency.

[0009] In one of the embodiments, the wet desulfurization tower further includes a support frame, the support frame is connected to the tower body, and the first base is rotatably connected to the support frame.

[0010] In one embodiment, the wet desulfurization tower further includes a rotating shaft connected to the support frame, a rotating hole is provided on the first base, and the first base is rotatably connected to the rotating shaft through the rotating hole.

[0011] In one embodiment, the wet desulfurization tower further includes a bearing having an outer ring and an inner ring, the inner ring of the bearing is sleeved on the rotating shaft, and the first base is sleeved on the outer ring of the bearing through the rotating hole.

[0012] By setting the bearing, the rotation of the tray can be made smoother.

[0013] In one embodiment, the support frame is fixedly connected to the tower body.

[0014] In one embodiment, the support frame includes a second base and a plurality of support rods, wherein the plurality of support rods are arranged at intervals along the circumference of the second base, and one end of each of the support rods away from the second base is connected to the tower body.

[0015] In one embodiment, the plurality of support rods include a plurality of horizontal support rods and a plurality of inclined support rods, the plurality of horizontal support rods and the plurality of inclined support rods are spaced apart from each other, and the plurality of inclined support rods are inclined toward one side of the second base, and the ends of the horizontal support rods and the inclined support rods away from the second base are connected to the tower body.

[0016] By tilting the inclined support rod toward one side of the second base, the connection strength between the support rod and the tower body can be increased, making the rotation of the tray more stable.

[0017] In one of the embodiments, the spray mechanism includes a spray pipe connected to the tower body, and the spray pipe is provided with a plurality of spray nozzles at intervals along the extension direction thereof.

[0018] In one embodiment, the spray pipe comprises a plurality of spray pipes, and the plurality of spray pipes are spaced apart from top to bottom.

[0019] By arranging a plurality of spray pipes at intervals from top to bottom, the multi-layered spray pipes can allow the flue gas to pass through the slurry during the rising process, thereby improving the desulfurization efficiency.

[0020] In one of the embodiments, the spray nozzles on the spray pipes of different layers are arranged alternately.

[0021] By staggering the spray nozzles on different layers of spray pipes, the desulfurization efficiency can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a wet desulfurization tower shown in one embodiment of the present application.

[0025] Figure 2 This is a top view of the tray shown in an embodiment of the present application.

[0026] Figure 3 This is a top view of the support frame shown in an embodiment of the present application.

[0027] Figure 4 This is a schematic diagram of the partial structure of a wet desulfurization tower shown in one embodiment of the present application.

[0028] Description of Reference Numerals

[0029] 10. Wet desulfurization tower; 100. Tower body; 110. Air inlet; 200. demister; 300. Spray mechanism; 310. Spray pipe; 320. Spray nozzle; 400. Tray; 410. First base; 420. Fan blades; 500. Support frame; 510. Second base; 520. Support rod; 521. Horizontal support rod; 522. Inclined support rod; 600. Bearing. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] The desulfurization tower is a device for desulfurizing industrial flue gas. It is widely used in flue gas desulfurization in the domestic coal-fired industry. The desulfurization tower can prevent the discharge of sulfur-containing flue gas and cause atmospheric pollution. The gas desulfurized by the desulfurization tower is harmless to the environment and is more environmentally friendly. After the flue gas enters the desulfurization tower, it moves from bottom to top. The through holes set on the tray can make the passing flue gas more evenly distributed, thereby improving the desulfurization efficiency.

[0037] In wet flue gas desulfurization, the tray is usually installed under the spray mechanism. During the spraying process, part of the slurry will gather on the tray. Long-term spraying can easily lead to excessive slurry gathering on the tray, thus affecting the absorption of sulfur. The tray needs to be cleaned regularly, which affects the work efficiency. In order to solve the problem of the tray of the existing desulfurization tower when spraying slurry for a long time, the researchers came up with the idea of ​​providing a wet flue gas desulfurization tower that can reduce the slurry gathering on the tray, and at the same time can extend the cleaning cycle of the tray and improve the desulfurization efficiency.

[0038] See also Figure 1 , Figure 2 and Figure 3 The embodiment of the present application relates to a wet desulfurization tower 10, comprising a tower body 100, a demister 200, a spray mechanism 300 and a tray 400, wherein the demister 200, the spray mechanism 300 and the tray 400 are arranged in the tower body 100 from top to bottom. The spray mechanism 300 can spray the slurry formed by the atomization of the desulfurizer.

[0039] Specifically, a cavity is formed in the tower body 100, and the demister 200, the spray mechanism 300 and the tray 400 are arranged in intervals from top to bottom in the cavity of the tower body 100. The wet desulfurization tower 10 is usually placed horizontally for use, and the demister 200, the spray mechanism 300 and the tray 400 are arranged in intervals from the top to the bottom of the desulfurization tower.

[0040] The tower body 100 is provided with an air inlet 110 and an air outlet, wherein the air inlet 110 is located below the tray 400 and the air outlet is located above the demister 200. Specifically, the air inlet 110 is provided on the side wall of the tower body 100. The air outlet may be provided on the side wall of the tower body 100 or on the top of the tower body 100. Both the air inlet 110 and the air outlet are in communication with the cavity of the tower body 100.

[0041] The flue gas can enter the inner cavity from the air inlet 110 and then flow from bottom to top. The slurry sprayed by the spray mechanism 300 falls from top to bottom, and the flue gas and the slurry are mixed at the position between the spray mechanism 300 and the air inlet 110. The slurry can remove the sulfur in the flue gas. As the flue gas continues to rise and pass through the demister 200, the demister 200 blocks the slurry mixed in the flue gas to prevent the slurry from being discharged through the air outlet along with the flue gas. The slurry blocked by the demister 200 will fall back, and while falling back, it will continue to neutralize the sulfur dioxide in the rising flue gas, further improving the desulfurization effect.

[0042] See also Figure 1 , Figure 2 and Figure 3 The tray 400 includes a first base 410 and a plurality of fan blades 420, and the plurality of fan blades 420 are arranged on the first base 410 at intervals along the circumference of the first base 410. The first base 410 is rotatably connected to the tower body 100. Specifically, the plurality of fan blades 420 are evenly arranged on the first base 410 at intervals along the circumference of the first base 410. It should be noted that: the present application does not limit the number of fan blades 420, which can be set according to actual use requirements. By way of example, in this embodiment, the number of fan blades 420 is 24.

[0043] When the flue gas flows from bottom to top through the tray 400, the tray 400 can be rotated. When the tray 400 rotates, the centrifugal force can be used to reduce the adhesion of the slurry, thereby reducing the slurry accumulated on the tray 400, and at the same time extending the cleaning cycle of the tray 400 and improving the desulfurization efficiency.

[0044] See also Figure 1 , Figure 2 , Figure 3 and Figure 4According to some embodiments of the present application, optionally, the wet desulfurization tower 10 also includes a support frame 500, which is connected to the tower body 100, and the first base 410 is rotatably connected to the support frame 500 so that the first base 410 is rotatably connected to the tower body 100.

[0045] Specifically, the wet desulfurization tower 10 further includes a rotating shaft connected to the support frame 500, a rotating hole is opened on the first base 410, and the first base 410 is rotatably connected to the rotating shaft through the rotating hole. More specifically, the wet desulfurization tower 10 further includes a bearing 600, the bearing 600 has an outer ring and an inner ring, the inner ring of the bearing 600 is sleeved on the rotating shaft, and the first base 410 is sleeved on the outer ring of the bearing 600 through the rotating hole.

[0046] By providing the bearing 600 , the rotation of the tray 400 can be smoother.

[0047] See also Figure 1 , Figure 2 and Figure 3 According to some embodiments of the present application, optionally, the support frame 500 is fixedly connected to the tower body 100. For example, the support frame 500 can be welded to the tower body 100, or the support frame 500 can be bonded to the tower body 100. In other embodiments, the support frame 500 can be detachably connected to the tower body 100, which can facilitate the rapid disassembly and assembly of the support frame 500.

[0048] See also Figure 1 , Figure 3 and Figure 4 According to some embodiments of the present application, optionally, the support frame 500 includes a second base 510 and a plurality of support rods 520, wherein the plurality of support rods 520 are arranged at intervals on the second base 510 along the circumference of the second base 510, and one end of each support rod 520 away from the second base 510 is connected to the tower body 100. Specifically, the plurality of support rods 520 are evenly arranged on the second base 510 along the circumference of the second base 510.

[0049] Specifically, the plurality of support rods 520 include a plurality of horizontal support rods 521 and a plurality of inclined support rods 522, the plurality of horizontal support rods 521 and the plurality of inclined support rods 522 are arranged at intervals, and the plurality of inclined support rods 522 are arranged inclined toward the second base side 510, and one end of the horizontal support rods 521 and the inclined support rods 522 are connected to the tower body 100. One end of the horizontal support rods 521 and the inclined support rods 522 away from the second base 510 are connected to the second base 510.

[0050] By tilting the inclined support rod 522 toward the second base side 510 , the connection strength between the support rod 520 and the tower body 100 can be increased, so that the rotation of the tray 400 is more stable.

[0051] See also Figure 1 , Figure 2 and Figure 3 According to some embodiments of the present application, optionally, the spray mechanism 300 includes a spray pipe 310 connected to the tower body 100, and the spray pipe 310 is provided with a plurality of spray nozzles 320 at intervals along the extension direction thereof.

[0052] Specifically, the spray pipe 310 includes a plurality of spray pipes 310, and the plurality of spray pipes 310 are arranged at intervals from top to bottom. It should be noted that the present application does not limit the number of the spray pipes 310, which can be set according to actual use requirements. For example, in this embodiment, the number of the spray pipes 310 is three.

[0053] By arranging a plurality of spray pipes 310 at intervals from top to bottom, the multi-layered spray pipes 310 can allow the flue gas to pass through the slurry during the ascending process, thereby improving the desulfurization efficiency.

[0054] See also Figure 1 , Figure 2 and Figure 3 According to some embodiments of the present application, optionally, the spray nozzles 320 on the spray pipes 310 of different layers are arranged in a staggered manner. By staggering the spray nozzles 320 on the spray pipes 310 of different layers, the desulfurization efficiency can be further improved.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A wet desulfurization tower, characterized in that: It comprises a tower body, a demister, a spray mechanism and a tray, wherein the demister, the spray mechanism and the tray are arranged in the tower body at intervals from top to bottom; An air inlet and an air outlet are provided on the tower body, wherein the air inlet is located below the tray, and the air outlet is located above the demister; The tray includes a first base and a plurality of fan blades, wherein the plurality of fan blades are arranged on the first base at intervals along the circumference of the first base; the first base is rotatably connected to the tower body.

2. The wet desulfurization tower according to claim 1, characterized in that: The wet desulfurization tower also includes a support frame, which is connected to the tower body, and the first base is rotatably connected to the support frame.

3. The wet desulfurization tower according to claim 2, characterized in that: The wet desulfurization tower also includes a rotating shaft connected to the support frame, and a rotating hole is opened on the first base, and the first base is rotatably connected to the rotating shaft through the rotating hole.

4. The wet desulfurization tower according to claim 3, characterized in that: The wet desulfurization tower also includes a bearing, and the bearing has an outer ring and an inner ring. The inner ring of the bearing is sleeved on the rotating shaft, and the first base is sleeved on the outer ring of the bearing through the rotating hole.

5. The wet desulfurization tower according to claim 2, characterized in that: The support frame is fixedly connected to the tower body.

6. The wet desulfurization tower according to claim 2, characterized in that: The support frame includes a second base and a plurality of support rods, wherein the plurality of support rods are arranged at intervals on the second base along the circumference of the second base, and one end of each support rod away from the second base is connected to the tower body.

7. The wet desulfurization tower according to claim 6, characterized in that: The plurality of support rods include a plurality of horizontal support rods and a plurality of inclined support rods, the plurality of horizontal support rods and the plurality of inclined support rods are arranged at intervals, and the plurality of inclined support rods are inclined toward one side of the second base, and the ends of the horizontal support rods and the inclined support rods away from the second base are connected to the tower body.

8. The wet desulfurization tower according to claim 1, characterized in that: The spray mechanism comprises a spray pipe connected to the tower body, and the spray pipe is provided with a plurality of spray nozzles at intervals along the extending direction thereof.

9. The wet desulfurization tower according to claim 8, characterized in that: The spray pipes include a plurality of spray pipes, and the plurality of spray pipes are spaced apart from top to bottom.

10. The wet desulfurization tower according to claim 9, characterized in that: The spray nozzles on the spray pipes at different layers are arranged alternately.

Images