exhaust tower

Abstract

The application discloses an exhaust tower. The exhaust tower has a mixing cabin in the shape of a rotary body, the top of the mixing cabin is provided with an exhaust port, the bottom surface is provided with a first air inlet and at least one second air inlet, a mixing plate is correspondingly arranged above the second air inlet, a first included angle a is formed between the mixing plate and the horizontal direction, the first included angle a is not less than 5° and not more than 25°, the mixing plate is used for changing the flow direction of the second gas after entering the mixing cabin, so that the temperature difference of the exhaust port is less than a preset value. By arranging the first air inlet and the second air inlet in the exhaust tower, and correspondingly arranging the mixing plate above the second air inlet, the flow direction of the second gas input into the mixing cabin through the second air inlet is changed, and then the first gas input into the mixing cabin through the first air inlet is fully mixed, so that the temperature difference of the gas temperature discharged from the exhaust port of the mixing cabin is less than a preset value, the gas emission standard is met, and the safety risk to the surrounding environment and personnel is reduced.

Description

Technical Field

[0001] This invention relates to the field of gas mixing and emission equipment technology, and more particularly to an exhaust tower. Background Technology

[0002] Taking nitrogen as an example, directly releasing large volumes of low-temperature nitrogen into the atmosphere can create widespread fog, causing the oxygen content in the air in localized areas to fall below safe levels, thus affecting the surrounding environment and even threatening human safety. Therefore, before being released into the atmosphere, the low-temperature gas needs to be heated so that the temperature of the final gas mixture released into the atmosphere meets emission requirements.

[0003] In existing technologies, high-temperature and low-temperature gases are often mixed by introducing them into the mixing chamber of an exhaust tower, so that the temperature of the gas discharged from the tower is higher than that of the low-temperature gas and meets emission requirements. However, in existing exhaust towers, insufficient mixing of high and low temperatures and uneven exhaust temperature often occur. Some low-temperature gas is discharged from the exhaust tower without being fully mixed and heated, which still poses certain safety risks to the environment and personnel.

[0004] Therefore, there is an urgent need for an exhaust tower that can solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an exhaust tower that can fully mix high and low temperature gases before emission, thereby reducing the safety risks to the environment and personnel during emission.

[0006] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows:

[0007] An exhaust tower has a rotating mixing chamber. The bottom surface of the mixing chamber is provided with a first air inlet and at least one second air inlet. The first air inlet is used to input a first gas into the mixing chamber, and the second air inlet is used to input a second gas into the mixing chamber. An exhaust port is provided at the top of the mixing chamber. The first air inlet and the exhaust port are coaxially arranged with the axis of the mixing chamber. The first gas and the second gas have different temperatures.

[0008] A mixing plate is provided directly above the second air inlet. The mixing plate forms a first angle α with the horizontal direction. The first angle α is not less than 5° and not greater than 25°. The mixing plate is used to change the flow direction of the second gas after it enters the mixing chamber, so that the temperature difference of the exhaust port is less than a preset value.

[0009] Optionally, in the vertical direction, the line connecting the highest and lowest points of each of the above-mentioned mixing plates can form a projection line segment on the bottom surface of the above-mentioned mixing chamber. The line connecting the midpoint of the projection line segment and the center of the bottom surface of the above-mentioned mixing chamber is configured as a deflection angle guide line, and the second included angle b between the deflection angle guide line and the projection line segment is not less than 45° and not greater than 90°.

[0010] Optionally, the second included angle b between the deflection angle guide line and the projection line segment of each of the above-mentioned mixing plates is 90°.

[0011] Optionally, the bottom of the mixing chamber is provided with at least two of the second air inlets, and the at least two of the second air inlets are arranged in a rotationally symmetrical manner with respect to the center of the bottom surface of the mixing chamber, and each of the second air inlets is connected to an independent air supply pipe.

[0012] Optionally, in the vertical direction, each of the above-mentioned mixing plates can form a projection surface on the bottom surface of the above-mentioned mixing chamber, and each of the above-mentioned second air inlets is located within the corresponding projection surface.

[0013] Optionally, both the second air inlet and the projected surface are circular.

[0014] Optionally, the diameter of the projection surface is not less than one-quarter of the bottom diameter of the mixing chamber and not greater than one-third of the bottom diameter of the mixing chamber.

[0015] Optionally, the shortest vertical distance h between the aforementioned mixing plate and the corresponding second air inlet shall not be less than 150 mm and not more than 350 mm.

[0016] Optionally, the height of the aforementioned mixing chamber is at least 5 times the bottom diameter of the aforementioned mixing chamber.

[0017] Optionally, a support rod is connected between the bottom surface of the mixing plate and the mixing chamber, and both the mixing plate and the support rod are made of stainless steel.

[0018] The beneficial effects of the exhaust tower of the present invention are as follows: by setting a first air inlet and a second air inlet in the exhaust tower, and setting a mixing plate correspondingly above the second air inlet, the flow direction of the second gas entering the mixing chamber through the second air inlet is changed, thereby fully mixing with the first gas entering the mixing chamber through the first air inlet, so that the temperature difference of the gas discharged from the mixing chamber through the exhaust port is less than a preset value, meeting the gas emission standards and reducing the safety risks to the surrounding environment and personnel. Attached Figure Description

[0019] Figure 1 This is a perspective view of the exhaust tower provided by the present invention;

[0020] Figure 2 This is a front view of the hybrid plate and support rod provided by the present invention;

[0021] Figure 3 This is a top view of the internal structure of the exhaust tower provided by the present invention;

[0022] Figure 4 This is a side view of the hybrid plate and support rod provided by the present invention;

[0023] Figure 5 This is a schematic projection of the mixing plate in one embodiment of the present invention.

[0024] In the picture:

[0025] 100. First air intake; 200. Second air intake; 300. Exhaust port;

[0026] 1. Mixing plate; 2. Support rod;

[0027] 10. Projection surface; 11. Projection line segment; 12. Deflection angle guide line. Detailed Implementation

[0028] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] In the description of this invention, 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," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0030] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features, used to distinguish and describe features, without any order or emphasis. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The following is for reference. Figures 1 to 5 This invention introduces the exhaust tower provided by the present invention.

[0033] like Figure 1 As shown, the exhaust tower has a mixing chamber shaped like a water bottle. The bottom surface of the mixing chamber has a first air inlet 100 and a second air inlet 200, and the top of the mixing chamber has an exhaust port 300 communicating with the outside. The first air inlet 100 is coaxially aligned with the axis of the mixing chamber and is used to introduce a first gas into the mixing chamber. The second air inlet 200 is located between the first air inlet 100 and the inner wall of the mixing chamber and is used to introduce a second gas into the mixing chamber. One of the first gas and the second gas is a high-temperature gas, and the other is a low-temperature gas; they can mix within the mixing chamber and ultimately exit the mixing chamber through the exhaust port 300.

[0034] like Figure 2 , Figure 3 As shown, in this embodiment, the bottom surface of the mixing chamber is provided with four second air inlets 200, which are arranged rotationally symmetrically with respect to the center of the bottom surface of the mixing chamber. Each second air inlet 200 is connected to an independent air supply pipe. A mixing plate 1 is correspondingly provided above each second air inlet 200. After the second gas enters the mixing chamber through the second air inlet 200, it impacts the mixing plate 1 and changes its flow direction under the blocking and guiding effect of the mixing plate 1, mainly forming an airflow around the axis of the mixing chamber. This is beneficial for the first gas and the second gas to be fully mixed before being discharged, thereby ensuring that the temperature difference at the exhaust port 300 is less than a preset value and meets the emission standards. Of course, in some other embodiments, the mixing chamber can also be cylindrical, cylindrical, or other shapes, as long as it is a rotating body that allows airflow to easily flow around its axis within the mixing chamber.

[0035] When using this exhaust tower, for example, depending on the flow rate of the first gas, the second gas can be selectively input through at least one of the second inlets 200, so that the temperature of the gas after the first gas and the second gas are fully mixed around the axis of the mixing chamber meets the emission requirements. Optionally, in some other embodiments, only one second inlet 200 may be provided, or other numbers may be provided, as long as an airflow can be formed around the axis of the mixing chamber, so that the temperature of the mixed gas meets the emission requirements and the temperature difference at discharge is less than a preset value.

[0036] It should be noted that in this embodiment, a temperature sensor can be installed at preset angles along the circumference of the exhaust port 300 to detect the temperature of the gas discharged from different positions of the exhaust port 300, thereby obtaining the temperature difference of the exhaust port 300. Specifically, as shown... Figure 3 As shown, a first angle α is formed between the mixing plate 1 and the horizontal direction. This first angle α is not less than 5° and not greater than 25°, thereby achieving a better blocking and guiding effect, allowing the first gas and the second gas to be discharged after thorough mixing, and ensuring that the temperature difference is less than 50°C (i.e., the aforementioned preset value). Preferably, in this embodiment, the first angle α is 15°, which can further achieve a better blocking and guiding effect.

[0037] By setting a first air inlet 100 and a second air inlet 200 in the exhaust tower, and setting a mixing plate 1 directly above the second air inlet 200, the flow direction of the second gas entering the mixing chamber through the second air inlet 200 is changed, thereby fully mixing with the first gas entering the mixing chamber through the first air inlet 100. This ensures that the temperature difference of the gas discharged from the mixing chamber through the exhaust port 300 is less than a preset value, meeting the gas emission standards and reducing safety risks to the surrounding environment and personnel.

[0038] Specifically, in this embodiment, such as Figure 2 , Figure 3 As shown, along the vertical direction, the line connecting the highest and lowest points of each mixing plate 1 forms a projection line segment 11 on the bottom surface of the mixing chamber. In this invention, the line connecting the midpoint of the projection line segment 11 and the center of the bottom surface of the mixing chamber is defined as the deflection angle guide line 12, and the second included angle b between the deflection angle guide line 12 and the projection line segment 11 is not less than 45° and not greater than 90°. When the second gas changes its flow direction under the obstruction and guidance effect of the mixing plate 1, the second included angle b will affect the specific direction of the changed flow direction, thereby affecting the mixing effect of the first gas and the second gas. Preferably, in this embodiment, the second included angle b between the deflection angle guide line 12 and the projection line segment 11 of the mixing plate 1 is 90°, which can achieve a better mixing effect.

[0039] More specifically, in this embodiment, as Figure 2As shown, the shortest vertical distance h between the mixing plate 1 and the corresponding second air inlet 200 is not less than 150 mm and not greater than 350 mm. This shortest vertical distance h can be obtained by measuring the height distance between the lowest point of the mixing plate 1 and the bottom surface of the mixing chamber. When the shortest vertical distance h between the mixing plate 1 and the corresponding second air inlet 200 is less than 150 mm, the mixing plate 1 has an excessively strong obstruction effect on the second gas, which is not conducive to forming an airflow around the axis of the mixing chamber. When the shortest vertical distance h between the mixing plate 1 and the corresponding second air inlet 200 is greater than 350 mm, it will cause a waste of space in the height direction within the mixing chamber, resulting in a higher manufacturing cost for the exhaust tower. Preferably, the height of the mixing chamber is at least 5 times the bottom diameter of the mixing chamber, further ensuring that the first gas and the second gas are fully mixed before being discharged.

[0040] Further, refer to Figure 4 , Figure 5 As shown, each mixing plate 1 can form a projection surface 10 on the bottom surface of the mixing chamber, and each second air inlet 200 is located within the corresponding projection surface 10, so that each mixing plate 1 can effectively block and guide the second gas entering the mixing chamber through each second air inlet 200.

[0041] For example, in this embodiment, both the second air inlet 200 and the projection surface 10 are circular, and the diameter of the projection surface 10 is not less than the diameter of the second air inlet 200, so that the mixing plate 1 can cover the second air inlet 200 in the vertical direction, allowing the second gas to be sufficiently blocked and guided by the mixing plate 1. For example, in this embodiment, the mixing plate 1 is an elliptical plate with a major axis of 1843 mm, and the first included angle α between it and the horizontal section is approximately 15°, and its projection surface 10 is a circle with a diameter of 1700 mm.

[0042] Preferably, the diameter of the projection surface 10 is not less than one-quarter of the bottom diameter of the mixing chamber and not greater than one-third of the bottom diameter of the mixing chamber. When the exhaust tower is manufactured with the diameter of the projection surface 10 being greater than one-third of the bottom diameter of the mixing chamber, although it ensures that the mixing plate 1 can completely cover the second air inlet 200, it will significantly increase the manufacturing and assembly costs. When the exhaust tower is manufactured with the diameter of the projection surface 10 being less than one-quarter of the bottom diameter of the mixing chamber, in order to ensure that the mixing plate 1 can completely cover the second air inlet 200, the opening size of the second air inlet 200 must be reduced accordingly, which limits the flow rate in the second air inlet 200 and thus limits the processing efficiency of the exhaust tower for high-temperature or low-temperature gases.

[0043] Optionally, in this embodiment, a support rod 2 connects the mixing plate 1 and the bottom surface of the mixing chamber, and both the mixing plate 1 and the support rod 2 are made of stainless steel. Stainless steel is corrosion-resistant and high-temperature resistant, and can withstand the impact of high-temperature, high-velocity hot air, ensuring the service life of the exhaust tower.

[0044] Furthermore, the thickness of the mixing plate 1 is not less than 30mm, which ensures that the strength of the mixing plate 1 can withstand the impact of high flow velocities, thus ensuring the service life of the exhaust tower. In this embodiment, a support rod 2 is provided every 45° along the circumferential direction of the projection plane 10, and the diameter of the support rod 2 is not less than 40mm, which can firmly fix the mixing plate 1 and prevent it from falling off or shifting. Of course, in some other embodiments, the number and distribution of the support rods 2 can be changed according to actual needs; this invention does not impose specific limitations on this.

[0045] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An exhaust tower, characterized in that, The exhaust tower has a rotating mixing chamber. The bottom surface of the mixing chamber is provided with a first air inlet (100) and at least one second air inlet (200). The first air inlet (100) is used to input a first gas into the mixing chamber, and the second air inlet (200) is used to input a second gas into the mixing chamber. The top of the mixing chamber is provided with an exhaust port (300). The first air inlet (100) and the exhaust port (300) are coaxially arranged with the axis of the mixing chamber. The first gas and the second gas have different temperatures. A mixing plate (1) is provided directly above the second air inlet (200). The mixing plate (1) forms a first angle a with the horizontal direction. The first angle a is not less than 5° and not greater than 25°. The mixing plate (1) is used to change the flow direction of the second gas after it enters the mixing chamber so that the temperature difference of the exhaust port (300) is less than a preset value. In the vertical direction, the line connecting the highest and lowest points of each of the mixing plates (1) can form a projection line segment (11) on the bottom surface of the mixing chamber. The line connecting the midpoint of the projection line segment (11) and the center of the bottom surface of the mixing chamber is configured as a deflection angle guide line (12), and the second included angle b between the deflection angle guide line (12) and the projection line segment (11) is not less than 45° and not greater than 90°. A support rod (2) is connected between the mixing plate (1) and the bottom surface of the mixing chamber, and both the mixing plate (1) and the support rod (2) are made of stainless steel.

2. The exhaust tower according to claim 1, characterized in that, The second included angle b between the deflection angle guide line (12) and the projection line segment (11) of each of the mixing plates (1) is 90°.

3. The exhaust tower according to claim 2, characterized in that, The bottom of the mixing chamber is provided with at least two second air inlets (200), and the at least two second air inlets (200) are arranged in a rotationally symmetrical manner with the center of the bottom surface of the mixing chamber as the center. Each second air inlet (200) is connected to an independent air supply pipe.

4. The exhaust tower according to claim 3, characterized in that, In the vertical direction, each of the mixing plates (1) can form a projection surface (10) on the bottom surface of the mixing chamber, and each of the second air inlets (200) is located within the corresponding projection surface (10).

5. The exhaust tower according to claim 4, characterized in that, Both the second air inlet (200) and the projection surface (10) are circular.

6. The exhaust tower according to claim 5, characterized in that, The diameter of the projection surface (10) is not less than one-quarter of the bottom diameter of the mixing chamber and not greater than one-third of the bottom diameter of the mixing chamber.

7. The exhaust tower according to claim 2, characterized in that, The shortest vertical distance h between the mixing plate (1) and the corresponding second air inlet (200) is not less than 150 mm and not more than 350 mm.

8. The exhaust tower according to claim 7, characterized in that, The height of the mixing chamber is at least 5 times the diameter of its bottom surface.

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