Flue gas denitration and desulfurization device

Abstract

The flue gas denitration and desulfurization device comprises a tower body, a heat exchange assembly, a denitration filtering assembly, a liquid collecting plate and a desulfurization assembly, and an inner cavity of the tower body is sequentially provided with a desulfurization cavity, a denitration cavity and a gas inlet cavity from top to bottom; a flue gas inlet communicated with the gas inlet cavity is formed in the bottom of the tower body, and a flue gas outlet is formed in the top of the tower body; the heat exchange assembly is arranged in the gas inlet cavity, flue gas enters the gas inlet cavity through the flue gas inlet, and the heat exchange assembly is used for heating the flue gas in the gas inlet cavity; the denitration filter assembly is arranged in the denitration cavity; the liquid collecting plate is arranged between the desulfurization cavity and the denitration cavity, a plurality of vertical pipes are arranged above the liquid collecting plate, the lower ends of the vertical pipes are communicated with the denitration cavity, a liquid outlet is formed in the side wall of the tower body, the liquid outlet is located above the liquid collecting plate, and the liquid outlet is lower than the upper ends of the vertical pipes; the desulfurization assembly is arranged in the desulfurization cavity and comprises a liquid distribution pipe and a tower tray, and the liquid distribution pipe is arranged above the tower tray. The flue gas treatment effect and efficiency can be improved, and waste of raw materials is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a flue gas denitration and desulfurization device. Background Art

[0002] Industrial flue gas usually contains nitrate and sulfur. If it is directly discharged into the atmosphere, it will cause serious pollution problems. In the relevant technology, there are many flue gas denitrification and desulfurization equipment, but its main improvement points are concentrated on the structure of the denitrification filter plate, the research and development of the denitrification catalyst, the preparation and spraying of the desulfurization solution, etc. There is a lack of specific process control over the reaction control of denitrification and desulfurization, resulting in low denitrification and desulfurization efficiency, low processing efficiency and more waste of raw materials. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a flue gas denitrification and desulfurization device, which can improve the treatment effect and efficiency of flue gas and reduce the waste of raw materials.

[0005] The flue gas denitrification and desulfurization device according to the embodiment of the present invention comprises:

[0006] A tower body, wherein the inner cavity of the tower body is composed of a desulfurization chamber, a denitrification chamber and an air intake chamber from top to bottom; a flue gas inlet connected to the air intake chamber is provided at the bottom of the tower body, and a flue gas outlet is provided at the top of the tower body;

[0007] A heat exchange component, wherein the heat exchange component is arranged in the air inlet cavity, and smoke enters the air inlet cavity through the smoke inlet, and the heat exchange component is used to heat the smoke in the air inlet cavity;

[0008] A denitration filter assembly, wherein the denitration filter assembly is disposed in the denitration chamber, and the heated flue gas enters the denitration chamber and contacts the denitration filter assembly to denitrate the flue gas;

[0009] A liquid collecting plate, the liquid collecting plate is arranged between the desulfurization chamber and the denitration chamber, a plurality of vertical pipes are arranged above the liquid collecting plate, the lower ends of the vertical pipes are communicated with the denitration chamber, a liquid outlet is arranged on the side wall of the tower body, the liquid outlet is located above the liquid collecting plate, and the height of the liquid outlet is lower than the upper end of the vertical pipe;

[0010] A desulfurization component, wherein the desulfurization component is arranged in the desulfurization chamber, and the desulfurization component comprises a liquid distribution pipe and a tower plate. The liquid distribution pipe is arranged above the tower plate, and the liquid distribution pipe is used to transport the desulfurization solution into the tower body, and make the desulfurization solution contact with the flue gas on the tower plate to desulfurize the flue gas, and the desulfurized flue gas is discharged from the flue gas outlet.

[0011] The flue gas denitrification and desulfurization device of the embodiment of the present invention can improve the flue gas treatment effect and efficiency and reduce the waste of raw materials.

[0012] In some embodiments, the heat exchange component comprises:

[0013] Upper bulkhead;

[0014] A lower baffle, the lower baffle and the upper baffle are arranged opposite to each other up and down, and divide the air inlet cavity into a first chamber and a second chamber arranged in sequence from top to bottom;

[0015] A plurality of gas delivery pipes, wherein the plurality of gas delivery pipes are arranged in the first chamber, the upper ends of the gas delivery pipes pass through the upper baffle and communicate with the desulfurization chamber, and the lower ends of the gas delivery pipes pass through the lower baffle and communicate with the second chamber;

[0016] A first inlet and a first outlet are provided on the side wall of the first chamber, and the heat exchange medium enters the first chamber through the first inlet and flows out of the first chamber through the first outlet.

[0017] In some embodiments, a plurality of guide plates are further included, and the plurality of guide plates are arranged in the second chamber to evenly distribute the smoke transported into the second chamber from the smoke inlet.

[0018] In some embodiments, the denitrification filter assembly includes a plurality of denitrification filter plates.

[0019] In some embodiments, the tower body includes a first shell, a second shell and a third shell arranged in sequence from top to bottom, the inner cavity of the first shell forms the desulfurization chamber, the inner cavity of the second shell forms the denitrification chamber, and the inner cavity of the third shell forms the air intake chamber, and the first shell and the second shell, as well as the second shell and the third shell are connected by flanges.

[0020] In some embodiments, a cooling component is further included. The cooling component is disposed between the liquid collecting plate and the tower tray. The liquid collecting plate is used to cool down the flue gas flowing toward the tower tray.

[0021] In some embodiments, the cooling assembly includes a plurality of air ducts and fans arranged side by side in the desulfurization chamber, an air collecting shell is provided on the outer wall of the tower body, one end of the plurality of air ducts extends out of the tower body, and the other end of the plurality of air ducts extends out of the tower body and is connected to the inner cavity of the air collecting shell, and the fan is connected to the air collecting shell to drive air to flow through the air ducts and cool the flue gas flowing from the desulfurization chamber to the tower plate.

[0022] In some embodiments, a gas-liquid separator is also included. The gas-liquid separator is arranged above the liquid distribution pipe, and the gas-liquid separator is used to filter out the liquid carried in the smoke.

[0023] In some embodiments, a control valve is further included, wherein the control valve is disposed on the smoke outlet, and the control valve is used to control the opening size of the smoke outlet to adjust the gas pressure in the tower body.

[0024] In some embodiments, a plurality of temperature detection components are further included, and the plurality of temperature detection components are respectively arranged in the air intake chamber, the denitrification chamber and the desulfurization chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a flue gas denitrification and desulfurization device according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic structural diagram of a cooling assembly according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Tower body; 11. First shell; 12. Second shell; 13. Third shell; 14. Desulfurization chamber; 15. Denitration chamber; 16. Air inlet chamber; 161. First chamber; 162. Second chamber; 17. Flue gas inlet; 18. Flue gas outlet; 19. Liquid outlet;

[0029] 2. heat exchange assembly; 21. upper baffle; 22. lower baffle; 23. gas transmission pipe; 24. first inlet; 25. second inlet;

[0030] 3. Denitrification filter assembly; 31. Denitrification filter plate;

[0031] 4. Liquid collecting plate; 41. Vertical pipe;

[0032] 5. Desulfurization component; 51. Liquid distribution pipe; 52. Tower tray;

[0033] 6. Cooling assembly; 61. Air duct; 62. Air collecting housing; 63. Fan;

[0034] 7. Gas-liquid separator;

[0035] 8. Control valve. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figure 1 and Figure 2As shown, the flue gas denitration and desulfurization device of the embodiment of the present invention includes a tower body 1, a heat exchange component 2, a denitration filter component 3, a liquid collecting plate 4 and a desulfurization component 5. The inner cavity of the tower body 1 is composed of a desulfurization chamber 14, a denitration chamber 15 and an air intake chamber 16 from top to bottom. A flue gas inlet 17 connected to the air intake chamber 16 is provided at the bottom of the tower body 1, and a flue gas outlet 18 is provided at the top of the tower body 1.

[0038] The heat exchange component 2 in the embodiment of the present invention is arranged in the air intake chamber 16, and the flue gas enters the air intake chamber 16 through the flue gas inlet 17. The heat exchange component 2 is used to heat the flue gas in the air intake chamber 16. The denitration filter component 3 is arranged in the denitration chamber 15. The heated flue gas enters the denitration chamber 15 and contacts the denitration filter component 3 to denitrate the flue gas; the liquid collecting plate 4 is arranged between the desulfurization chamber 14 and the denitration chamber 15, and a plurality of vertical pipes 41 are arranged above the liquid collecting plate 4. The lower end of the vertical pipe 41 is connected to the denitration chamber 15. The tower body 1 is connected, a liquid outlet 19 is provided on the side wall of the tower body 1, the liquid outlet 19 is located above the liquid collecting plate 4, and the height of the liquid outlet 19 is lower than the upper end of the vertical pipe 41, the desulfurization component 5 is arranged in the desulfurization chamber 14, the desulfurization component 5 includes a liquid distribution pipe 51 and a tower plate 52, the liquid distribution pipe 51 is arranged above the tower plate 52, the liquid distribution pipe 51 is used to transport the desulfurization solution into the tower body 1, and make the desulfurization solution contact with the flue gas on the tower plate 52 to desulfurize the flue gas, and the desulfurized flue gas is discharged from the flue gas outlet 18.

[0039] It should be understood that the industrial flue gas enters the air inlet chamber 16 at the bottom of the tower body 1 through the flue gas inlet 17, and the flue gas flows through the heat exchange component 2 to be heated. The heated flue gas can fully and efficiently carry out the denitrification reaction after contacting the catalyst in the denitrification filter component 3, thereby improving the denitrification effect and efficiency. Furthermore, as the flue gas flows further upward, the flue gas is fully contacted with the desulfurization solution flowing into the tower body 1 through the liquid distribution pipe 51 on the tower plate 52, thereby achieving desulfurization of the flue gas.

[0040] It should be further explained that the desulfurization solution falls from the tower plate 52 and flows into the liquid collecting plate 4, and converges on the liquid collecting plate 4, and the flue gas flows into the desulfurization chamber 14 from the vertical pipe 41. At this time, the desulfurization solution on the liquid collecting plate 4 can exchange heat with the flue gas, thereby reducing the temperature of the flue gas and improving the efficiency and effect of the flue gas and the desulfurization solution during the desulfurization reaction.

[0041] The flue gas denitrification and desulfurization device of the embodiment of the present invention can improve the flue gas treatment effect and efficiency and reduce the waste of raw materials.

[0042] In some embodiments, the heat exchange component 2 includes an upper partition 21, a lower partition 22 and a plurality of gas pipes 23. The lower partition 22 and the upper partition 21 are arranged opposite to each other up and down, and divide the air inlet chamber 16 into a first chamber 161 and a second chamber 162 arranged in sequence from top to bottom; a plurality of gas pipes 23 are arranged in the first chamber 161, the upper ends of the gas pipes 23 pass through the upper partition 21 and are connected to the desulfurization chamber 14, and the lower ends of the gas pipes 23 pass through the lower partition 22 and are connected to the second chamber 162; a first inlet 24 and a first outlet are provided on the side wall of the first chamber 161, and the heat exchange medium enters the first chamber 161 through the first inlet 24 and flows out of the first chamber 161 through the first outlet.

[0043] Specifically, the industrial flue gas enters the second chamber 162 from the flue gas inlet 17, gathers in the second chamber 162, and then flows upward along the gas pipe 23. Since the flue gas in the gas pipe 23 and the heat exchange medium in the first chamber 161 can indirectly exchange heat, the flue gas temperature in the gas pipe 23 can be further increased. By raising the temperature of the flue gas to a reasonable range, the denitrification effect and efficiency can be guaranteed.

[0044] The embodiment of the present invention utilizes steam as the heat exchange medium.

[0045] In some embodiments, the flue gas denitrification and desulfurization device further includes a plurality of guide plates, and the plurality of guide plates are disposed in the second chamber 162 to evenly distribute the flue gas transported into the second chamber 162 from the flue gas inlet 17 .

[0046] The guide plate can change the flow direction of the flue gas and guide the flue gas, so that the flue gas entering the second chamber 162 is more evenly distributed. The heat exchange component 2 also has the effect of flue gas flow balancing, ensuring that the flue gas entering the denitrification chamber 15 is relatively uniformly distributed in the same horizontal plane, thereby increasing the service life of the denitrification filter component 3 and avoiding inconsistent catalytic reaction levels of catalysts at different positions due to uneven flue gas distribution.

[0047] In some embodiments, the denitration filter assembly 3 includes a plurality of denitration filter plates 31. The plurality of denitration filter plates 31 may be arranged in sequence in the vertical direction, thereby ensuring that the flue gas can be fully denitrated after passing through the plurality of denitration filter plates 31.

[0048] The number of the denitration filter plates 31 may be 2, 3 or 5.

[0049] The denitration filter plate 31 includes a plate body and a plurality of through holes arranged on the plate body. Catalysts are arranged in the plate body or the through holes so that the flue gas can contact and react with the catalysts when flowing through the through holes to achieve denitration.

[0050] In some embodiments, the tower body 1 includes a first shell 11, a second shell 12 and a third shell 13 arranged in sequence from top to bottom, the inner cavity of the first shell 11 forms a desulfurization chamber 14, the inner cavity of the second shell 12 forms a denitrification chamber 15, and the inner cavity of the third shell 13 forms an air intake chamber 16, and the first shell 11 and the second shell 12, and the second shell 12 and the third shell 13 are connected by flanges.

[0051] In order to facilitate equipment repair and maintenance, and to facilitate the replacement of the denitrification filter plate 31, the embodiment of the present invention configures the tower body 1 as a split structure. By arranging the three shells in sequence in the vertical direction, the installation and disassembly of the internal components are convenient, thereby improving practicality.

[0052] In some embodiments, the flue gas denitrification and desulfurization device further includes a cooling component 6 , which is disposed between the liquid collecting plate 4 and the tower tray 52 . The liquid collecting plate 4 is used to cool the flue gas flowing toward the tower tray 52 .

[0053] The embodiment of the present invention improves the desulfurization effect by controlling the temperature of the flue gas reacting with the desulfurization solution.

[0054] like Figure 2 As shown, further, the cooling assembly 6 includes a plurality of air ducts 61 and a fan 63 arranged side by side in the desulfurization chamber 14, an air collecting shell 62 is provided on the outer wall of the tower body 1, one end of the plurality of air ducts 61 extends out of the tower body 1, and the other end of the plurality of air ducts 61 extends out of the tower body 1 and is connected with the inner cavity of the air collecting shell 62, and the fan 63 is connected with the air collecting shell 62 to drive air to flow through the air duct 61 and cool the flue gas flowing to the tower plate 52 in the desulfurization chamber 14.

[0055] That is to say, a plurality of air ducts 61 are arranged, and the air ducts 61 are located in the desulfurization chamber 14. Both ends of the air ducts 61 are located outside the tower body 1, and one end is directly connected to the atmosphere, and the other end is connected to the atmosphere through an air collecting shell 62 and a fan 63. When the fan 63 transports air into the inner cavity of the air collecting shell 62, the air in the air collecting shell 62 passes through the plurality of air ducts 61 and flows out from the other end of the air duct 61. At this time, the air in the air duct 61 and the flue gas in the desulfurization chamber 14 undergo indirect contact heat exchange, so the flue gas can be cooled.

[0056] There are multiple air ducts 61, which are arranged in parallel in a horizontal plane to ensure that the flue gas can be evenly heat exchanged and cooled. In addition, multiple air ducts 61 arranged side by side in the same horizontal plane form an air duct 61 group, and multiple air duct 61 groups are arranged in sequence in the vertical direction.

[0057] In some embodiments, the flue gas denitrification and desulfurization device further includes a gas-liquid separator 7 , which is disposed above the liquid distribution pipe 51 , and is used to filter out the liquid carried in the flue gas.

[0058] The gas-liquid separator 7 can further cool the flue gas that has undergone denitration and desulfurization, thereby condensing the steam carried in the flue gas, thereby recovering the condensed liquid and avoiding waste of the desulfurization solution.

[0059] In some embodiments, the flue gas denitration and desulfurization device further includes a control valve 8, which is disposed on the flue gas outlet 18 and is used to control the opening size of the flue gas outlet 18 to adjust the gas pressure in the tower body 1. The control valve 8 may be a gate valve, which controls the gas flow rate of the flue gas outlet 18 to control the gas pressure in the tower body 1, thereby ensuring sufficient contact reaction between the flue gas and the desulfurization solution in the tower tray 52, and avoiding problems such as low desulfurization and denitrification efficiency caused by excessively fast airflow.

[0060] In some embodiments, the flue gas denitrification and desulfurization device further includes a plurality of temperature detection components, which are respectively disposed in the air intake chamber 16 , the denitrification chamber 15 and the desulfurization chamber 14 .

[0061] The temperature detection component is used to detect the intake temperature, denitrification temperature and desulfurization temperature of the flue gas respectively, so as to control the working efficiency of the heat exchange component 2 and the cooling component 6, realize the adjustment of the flue gas temperature at different stages, and ensure the efficiency and effect of denitrification and desulfurization.

[0062] The temperature detection component is a temperature sensor, which is arranged on the outer wall of the tower body 1 , and the detection end of the temperature sensor penetrates into the inner cavity of the tower body 1 .

[0063] In the description of the present invention, it is to be understood that 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., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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 the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0067] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A flue gas denitrification and desulfurization device, characterized in that: include: A tower body, wherein the inner cavity of the tower body is composed of a desulfurization chamber, a denitrification chamber and an air intake chamber from top to bottom; a flue gas inlet connected to the air intake chamber is provided at the bottom of the tower body, and a flue gas outlet is provided at the top of the tower body; A heat exchange component, wherein the heat exchange component is arranged in the air inlet cavity, and smoke enters the air inlet cavity through the smoke inlet, and the heat exchange component is used to heat the smoke in the air inlet cavity; A denitration filter assembly, wherein the denitration filter assembly is disposed in the denitration chamber, and the heated flue gas enters the denitration chamber and contacts the denitration filter assembly to denitrate the flue gas; A liquid collecting plate, the liquid collecting plate is arranged between the desulfurization chamber and the denitration chamber, a plurality of vertical pipes are arranged above the liquid collecting plate, the lower ends of the vertical pipes are communicated with the denitration chamber, a liquid outlet is arranged on the side wall of the tower body, the liquid outlet is located above the liquid collecting plate, and the height of the liquid outlet is lower than the upper end of the vertical pipe; A desulfurization component, wherein the desulfurization component is arranged in the desulfurization chamber, and the desulfurization component comprises a liquid distribution pipe and a tower plate. The liquid distribution pipe is arranged above the tower plate, and the liquid distribution pipe is used to transport the desulfurization solution into the tower body, and make the desulfurization solution contact with the flue gas on the tower plate to desulfurize the flue gas, and the desulfurized flue gas is discharged from the flue gas outlet.

2. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: The heat exchange component comprises: Upper bulkhead; A lower baffle, the lower baffle and the upper baffle are arranged opposite to each other up and down, and divide the air inlet cavity into a first chamber and a second chamber arranged in sequence from top to bottom; A plurality of gas delivery pipes, wherein the plurality of gas delivery pipes are arranged in the first chamber, the upper ends of the gas delivery pipes pass through the upper baffle and communicate with the desulfurization chamber, and the lower ends of the gas delivery pipes pass through the lower baffle and communicate with the second chamber; A first inlet and a first outlet are provided on the side wall of the first chamber, and the heat exchange medium enters the first chamber through the first inlet and flows out of the first chamber through the first outlet.

3. The flue gas denitrification and desulfurization device according to claim 2, characterized in that: It also includes a plurality of guide plates, which are arranged in the second chamber to evenly distribute the smoke transported into the second chamber from the smoke inlet.

4. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: The denitration filter assembly includes a plurality of denitration filter plates.

5. The flue gas denitrification and desulfurization device according to claim 4, characterized in that: The tower body includes a first shell, a second shell and a third shell which are arranged in sequence from top to bottom. The inner cavity of the first shell forms the desulfurization chamber, the inner cavity of the second shell forms the denitrification chamber, and the inner cavity of the third shell forms the air intake chamber. The first shell and the second shell, as well as the second shell and the third shell are connected by flanges.

6. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: It also includes a cooling component, which is arranged between the liquid collecting plate and the tower tray, and the liquid collecting plate is used to cool the flue gas flowing to the tower tray.

7. The flue gas denitrification and desulfurization device according to claim 6, characterized in that: The cooling assembly includes a plurality of air ducts and a fan arranged side by side in the desulfurization chamber. An air collecting shell is provided on the outer wall of the tower body. One end of the plurality of air ducts extends out of the tower body, and the other end of the plurality of air ducts extends out of the tower body and is connected with the inner cavity of the air collecting shell. The fan is connected with the air collecting shell to drive air to flow through the air ducts and cool the flue gas flowing from the desulfurization chamber to the tower plate.

8. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: It also includes a gas-liquid separator, which is arranged above the liquid distribution pipe and is used to filter out the liquid carried in the smoke.

9. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: It also includes a control valve, which is arranged on the smoke outlet and is used to control the opening size of the smoke outlet to adjust the gas pressure in the tower body.

10. The flue gas denitrification and desulfurization device according to claim 1, characterized in that: It also includes a plurality of temperature detection components, which are respectively arranged in the air intake chamber, the denitration chamber and the desulfurization chamber.

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