Flue gas low-temperature denitration treatment device for environmental protection

Abstract

The invention discloses a flue gas low-temperature denitration treatment device for environmental protection, and relates to the technical field of flue gas low-temperature denitration treatment. Comprising a shell, a rotating block is installed at the top end of the shell through a motor, a sleeve is arranged on the surface of the rotating block in a limiting sliding mode, an airflow adjusting assembly is installed at the top end in the sleeve, and a first through plate is installed on the inner wall of the shell and located below the sleeve. According to the invention, through the arrangement of the sleeve, the adjusting plate, the first through plate and the gas flow adjusting assembly, the flow velocity of gas in the shell can be increased, and the uniform distribution of flue gas in the denitration reactor is ensured, so that the full contact of atomized ammonia gas in a reducing agent and nitrogen oxides (NOx) in the flue gas is facilitated, and the phenomenon that the local concentration is too high or too low is reduced; the flow velocity of the flue gas is kept consistent, so that local temperature fluctuation or reactant retention time difference caused by uneven flow velocity can be avoided, and the denitration reaction is ensured to be carried out under the optimal condition.

Description

Technical Field

[0001] The present invention relates to the technical field of low-temperature denitrification treatment of flue gas, and specifically provides a low-temperature denitrification treatment device for environmental protection for flue gas. Background Art

[0002] With the acceleration of the industrialization process, the combustion of a large amount of fossil fuels has led to an increasing emission of nitrogen oxides (NOx) in flue gas. NOx is one of the main air pollutants, which can cause environmental problems such as acid rain, photochemical smog, and ozone layer depletion, posing a serious threat to the ecological environment and human health. The emission control of nitrogen oxides (NOx) in flue gas has become a key issue that needs to be urgently solved in the industrial field. Although the traditional high-temperature SCR (Selective Catalytic Reduction) denitrification technology is mature, it has defects such as large equipment investment, high operating costs, and easy poisoning of the reducing agent, especially in the treatment of low-temperature flue gas (<300°C), the effect is not good. A low-temperature denitrification treatment device for flue gas is an environmental protection device that can effectively remove nitrogen oxides (NOx) in flue gas under low-temperature conditions (usually 150 - 300°C). This device uses a reducing agent (such as ammonia, urea) to convert NOx into harmless nitrogen and water vapor, thereby reducing the pollution of flue gas to the atmosphere.

[0003] When the existing equipment treats flue gas, it usually needs to spray a reducing agent into the flue gas, and the reducing agent needs to be fully mixed with the flue gas to achieve the denitrification treatment of the flue gas. When the smoke concentration is high, since its descending speed slows down, the flow rate of the flue gas will slow down, which will affect the mixing effect of the flue gas and the reducing agent. Moreover, when the reducing agent is sprayed, it is not convenient to adjust the spraying range of the reducing agent according to the concentration and flow rate of the flue gas. When the concentration of nitrogen oxides in the flue gas is high and the flow rate is large, if the spraying range of the reducing agent is not correspondingly expanded, it is not conducive to the full contact between the reducing agent and the flue gas, and the denitrification reaction will be incomplete.

[0004] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-temperature denitrification treatment device for environmental protection for flue gas, so as to solve the problem that when the smoke concentration is high in the above-mentioned background art, it will affect the mixing effect of the flue gas and the reducing agent, and when the reducing agent is sprayed, it is not convenient to adjust the spraying range of the reducing agent according to the concentration and flow rate of the flue gas. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0006] To achieve the above object, the present invention provides the following technical solutions: A flue gas low-temperature denitrification treatment device for environmental protection, comprising a housing. A rotating block is installed at the top of the housing through a motor. A sleeve is slidably limited on the surface of the rotating block. An air flow regulating component is installed at the top inside the sleeve. A first through plate is installed on the inner wall of the housing below the sleeve. A connecting plate is installed on the inner wall of the housing near the middle area. A plurality of filter plates are installed inside the intake pipe. The top of a support rod inside the housing is installed with an atomizing table. The top of the atomizing table is rotatably connected with a shunt pipe. An installation frame is installed at the top of the shunt pipe. A spraying head is rotatably connected inside the installation frame. A connecting frame is arranged at the side end of the spraying head. An amplitude regulating component is arranged at the bottom end of the spraying head; The amplitude regulating component includes an elastic telescopic rod installed inside a convex block on one side of the bottom end of the installation frame. A contact frame is installed at the end of the elastic telescopic rod. The other end of the contact frame is installed with a pressing rod. The pressing rod is slidably limited inside a convex block on the other side of the bottom end of the installation frame. A first oil tank is installed at the bottom of the connecting plate. A first piston rod is slidably limited inside the first oil tank. It also includes a second oil tank installed at the top of the rotating block. A second piston rod is slidably limited inside the second oil tank.

[0007] Preferably, an intake pipe is installed on the right side of the top of the housing. A heat exchanger is installed on the surface of the intake pipe. A smoke sensor is installed on the surface of the intake pipe near the housing area. An outlet pipe is installed at the bottom of the housing. An infusion pipe is installed on the surface of the housing. A catalytic module is installed in the lower area inside the housing.

[0008] Preferably, the air flow regulating component includes a regulating plate installed on the surface of the rotating block through a rotating shaft. A gear ring is installed on the surface of the end of the rotating shaft of the regulating plate. A through groove is opened on the surface of the sleeve. A rack is installed on the side wall of the through groove. The gear ring meshes with the side end of the rack. A top rod is installed at the bottom end of the sleeve. A second through plate is installed on the bottom wall of the housing at the bottom of the sleeve. The air flow regulating component also includes an electric push rod installed at the bottom of the rotating block. The extending end of the electric push rod is connected to the bottom end inner wall of the sleeve.

[0009] Preferably, the number of the regulating plates is four groups. The four groups of regulating plates are evenly distributed in a circular shape on the surface of the rotating block.

[0010] Preferably, a connecting pipe is installed at the bottom of the leakage hole on the surface of the second through plate. The connecting pipe at the bottom of the second through plate is slidably limited inside the leakage hole inside the first through plate. Side through openings are opened inside the leakage holes inside the first through plate.

[0011] Preferably, the top rod is composed of a round rod and a round plate rotatably connected to the surface of the round rod. The round rod rotates inside the first through plate. The bottom of the round plate is connected to the top end of the first through plate.

[0012] Preferably, the end of the infusion tube penetrates through the housing and is connected to the atomization table.

[0013] Preferably, a connecting frame is installed at the bottom of the ejector rod, a chute is provided inside the connecting frame, and the side end of the mounting frame is limited to slide in the chute inside the connecting frame.

[0014] Preferably, a resisting ring is slidably limited inside the housing. The first piston rod penetrates through the connecting plate and is connected to the bottom of the resisting ring. A groove is provided inside the resisting ring. The groove is in a semi-truncated cone shape with a smaller upper opening and a larger lower opening. The number of grooves is multiple groups, and multiple groups of the grooves are evenly distributed in a circular shape inside the resisting ring. A hose is connected between the first oil tank and the second oil tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, through the provided sleeve, adjusting plate, first through plate and air flow adjusting component, the flow rate of the gas inside the housing can be increased, ensuring that when the smoke concentration in the intake pipe changes, it can also have the same decreasing speed, ensuring the uniform distribution of the smoke in the denitration reactor. This helps the atomized ammonia in the reducing agent to fully contact with the nitrogen oxides (NOx) in the smoke, reducing the phenomenon of excessive or too low local concentration, keeping the smoke flow rate consistent, and avoiding local temperature fluctuations or differences in reactant residence time caused by uneven flow rates, ensuring that the denitration reaction proceeds under the best conditions.

[0016] 2. In the present invention, through the provided amplitude adjusting component, shunt pipe, mounting frame and spraying head, the spraying range of the reducing agent can be adjusted according to the concentration of the smoke, ensuring that the aerosol during the atomization of the reducing agent can fully contact with the smoke. When the smoke concentration is high, the spraying range is expanded to increase the contact area between the reducing agent and NOx, increasing the contact area between the reducing agent and the smoke, which can ensure that the reducing agent fully covers the high-concentration area; when the concentration is low, the range is reduced to avoid waste, and it can also avoid waste caused by excessive spraying of the reducing agent, while reducing the escape of unreacted reducing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of one perspective of the present invention; Figure 2 is a schematic sectional structural diagram of the present invention; Figure 3 is the present invention Figure 2 an enlarged structural diagram of part A in; Figure 4 is an exploded schematic diagram of the internal structure of the present invention; Figure 5 is the present invention Figure 4 an enlarged structural diagram of part B in; Figure 6 It is a schematic diagram of the explosion structure of the sleeve and the first through plate of the present invention; Figure 7 It is a schematic diagram of the explosion structure of the shunt pipe and the atomization table of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at C in the middle; Figure 9 It is a schematic diagram of the internal structure of the first through plate and the second through plate of the present invention; Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at D in the middle; Figure 11 This is a schematic diagram of the structure of the amplitude adjustment component of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure at E in the middle; Figure 13 It is a schematic diagram of the explosion structure of the connecting plate and the abutment ring of the present invention.

[0018] In the figure: 1. shell; 2. air inlet pipe; 3. heat exchanger; 4. smoke sensor; 5. air outlet pipe; 6. infusion tube; 7. sleeve; 8. adjustment plate; 9. first through plate; 101. gear ring; 102. rack; 103. push rod; 104. second through plate; 105. electric push rod; 11. connecting plate; 12. filter plate; 13. atomizing table; 14. shunt pipe; 15. mounting frame; 16. spray head; 17. connecting frame; 181. elastic telescopic rod; 182. resistance frame; 183. extrusion rod; 184. first oil tank; 185. first piston rod; 186. resistance ring; 187. second oil tank; 188. second piston rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 - 13, the present invention provides a technical solution: a flue gas low-temperature denitrification treatment device for environmental protection, including a housing 1. A rotating block is installed at the top of the housing 1 through a motor. A sleeve 7 is limited and slid on the surface of the rotating block. An air flow regulating component is installed at the top end inside the sleeve 7. A first through plate 9 is installed on the inner wall of the housing 1 below the sleeve 7. A connecting plate 11 is installed in the middle area near the inner wall of the housing 1. A plurality of filter plates 12 are installed inside the intake pipe 2. A misting table 13 is installed at the top of the support rod inside the housing 1. A shunt pipe 14 is rotatably connected to the top of the misting table 13. An installation frame 15 is installed at the top of the shunt pipe 14. A spraying head 16 is rotatably connected inside the installation frame 15. A connecting frame 17 is arranged at the side end of the spraying head 16. An amplitude regulating component is arranged at the bottom end of the spraying head 16. The amplitude regulating component can adjust the spraying range of the reducing agent according to the concentration of the flue gas to ensure the uniform distribution of the reducing agent in the flue gas; The amplitude regulating component includes an elastic telescopic rod 181 installed inside the convex block on one side of the bottom end of the installation frame 15. A contact frame 182 is installed at the end of the elastic telescopic rod 181. Another end of the contact frame 182 is installed with a pressing rod 183. The pressing rod 183 is limited and slid inside the convex block on the other side of the bottom end of the installation frame 15. A first oil tank 184 is installed at the bottom of the connecting plate 11. A first piston rod 185 is limited and slid inside the first oil tank 184. It also includes a second oil tank 187 installed at the top of the rotating block. A second piston rod 188 is limited and slid inside the second oil tank 187.

[0021] As an implementation manner of the present invention, an intake pipe 2 is installed on the right side of the top of the housing 1. A heat exchanger 3 is installed on the surface of the intake pipe 2. A smoke sensor 4 is installed on the surface of the intake pipe 2 near the housing 1 area. An outlet pipe 5 is installed at the bottom of the housing 1. An infusion pipe 6 is installed on the surface of the housing 1. A catalytic module is installed in the lower area inside the housing 1. The reducing agent inside the infusion pipe 6 is transported to the misting table 13 through an air pump. The reducing agent is heated inside the misting table 13 so that it can form a mist when sprayed and can better contact the flue gas. When the mixed flue gas passes through the catalytic module, the atomized reducing agent is fully mixed with the smoke, and the nitrogen oxides in the smoke are removed; As an implementation manner of the present invention, the air flow regulating component includes an adjusting plate 8 installed on the surface of the rotating block through a rotating shaft. A gear ring 101 is installed on the surface of the end of the rotating shaft of the adjusting plate 8. A through groove is opened on the surface of the sleeve 7. A rack 102 is installed on the side wall of the through groove. The gear ring 101 meshes with the side end of the rack 102. A top rod 103 is installed at the bottom end of the sleeve 7. A second through plate 104 is installed on the bottom wall of the housing 1 at the bottom of the sleeve 7. The air flow regulating component also includes an electric push rod 105 installed at the bottom of the rotating block. The extending end of the electric push rod 105 is connected to the bottom end inner wall of the sleeve 7. The air flow regulating component can increase the gas flow inside the housing 1 to ensure that when the flue gas concentration in the intake pipe 2 changes, it can also have the same rising speed, ensuring the uniform distribution of the flue gas in the denitrification reactor; As an embodiment of the present invention, the number of the adjustment plates 8 is four groups, and the four groups of adjustment plates 8 are evenly distributed in a circular shape on the surface of the rotating block. The establishment of the four groups of adjustment plates 8 can increase the flow of gas inside the shell 1; As an embodiment of the present invention, a connecting pipe is installed at the bottom of the leakage hole on the surface of the second through plate 104. The connecting pipe at the bottom of the second through plate 104 slides within the leakage hole inside the first through plate 9. The leakage hole inside the first through plate 9 is provided with a side opening. When the smoke concentration changes, the flow rate of the gas in the shell 1 is changed by adjusting the deflection degree of the regulating plate 8. When the smoke concentration is large, the gas flow rate increases. By increasing the number of through holes inside the leakage hole, the speed at which the smoke falls is slowed down. When the smoke concentration is small, the gas flow rate also decreases synchronously. By increasing the number of through holes inside the leakage hole, the smoke falls faster, ensuring that when the smoke concentration in the intake pipe 2 changes, it can also have the same falling speed. As an embodiment of the present invention, the top rod 103 is composed of a round rod and a round plate rotatably connected to the surface of the round rod, the round rod rotates inside the first through plate 9, the bottom of the round plate is connected to the top of the first through plate 9, the end of the infusion tube 6 passes through the housing 1, and the end of the infusion tube 6 is connected to the atomization table 13; When the smoke concentration is high, it will affect the mixing effect of the smoke and the reducing agent, and when the reducing agent is sprayed, it is not convenient to adjust the spraying range of the reducing agent according to the concentration and flow rate of the smoke. The specific implementation method is as follows: first, the filter plate 12 in the air intake pipe 2 filters the smoke, and the filtered smoke enters the shell 1. The heat exchanger 3 heats the smoke passing through the air intake pipe 2. The smoke sensor 4 detects the smoke concentration in the air intake pipe 2. When the smoke concentration is low, the motor drives the rotating block to rotate, and the rotating block drives the adjusting plate 8 to rotate at the top of the shell 1, so that the smoke in the shell 1 flows, and the infusion The pipe 6 delivers the reducing agent to the atomizing platform 13 through the air pump, the controller heats up the inside of the atomizing platform 13, the reducing agent inside the atomizing platform 13 forms aerosol, the shunt pipe 14 sprays the aerosol into the housing 1 through the spray head 16, the top rod 103 drives the shunt pipe 14 to rotate at the top of the atomizing platform 13 through the connecting frame 17, when the connecting frame 17 rotates, the extrusion rod 183 is continuously subjected to the pressure of the resistance ring 186, and reciprocates in the convex block at the bottom end of the mounting frame 15, the reciprocating movement of the extrusion rod 183 drives the spray head 16 to rotate inside the mounting frame 15, and increases the spraying range of the spray head 16; As an embodiment of the present invention, a connecting frame 17 is installed at the bottom of the top rod 103, and a slide groove is opened inside the connecting frame 17. The side end of the mounting frame 15 slides in the slide groove inside the connecting frame 17. The opening of the slide groove at the side end of the mounting frame 15 can avoid the problem of limit jamming when the top rod 103 pushes the mounting frame 15 to move downward; As an embodiment of the present invention, a contact ring 186 is slidably limited inside the housing 1. The first piston rod 185 passes through the connecting plate 11 and is connected to the bottom of the contact ring 186. A groove is formed inside the contact ring 186. The groove is in the shape of a semi-frustrum of a cone, with a smaller opening at the upper end and a larger opening at the lower end. The number of grooves is multiple groups, and the multiple groups of grooves are evenly distributed in a circular shape inside the contact ring 186. A hose is connected between the first oil tank 184 and the second oil tank 187. A spring is sleeved on the surface of the extrusion rod 183. One end of the spring is connected to the contact frame 182, and the other end of the spring is connected to one side of the convex block at the top of the mounting frame 15.

[0022] Working principle: During operation, first, the filter plate 12 in the intake pipe 2 filters the flue gas. The filtered smoke enters the housing 1. The heat exchanger 3 heats up the flue gas passing through the intake pipe 2. The smoke sensor 4 detects the smoke concentration in the intake pipe 2. When the smoke concentration is relatively low, the motor drives the rotating block to rotate. The rotating block drives the adjusting plate 8 to rotate at the top of the housing 1, causing the smoke in the housing 1 to flow. The infusion pipe 6 transports the reducing agent to the atomizing table 13 through the air pump. The controller heats up the inside of the atomizing table 13. The reducing agent inside the atomizing table 13 forms an aerosol. The shunt pipe 14 sprays the aerosol into the housing 1 through the spray head 16. The top rod 103 drives the shunt pipe 14 to rotate at the top of the atomizing table 13 through the connecting frame 17. When the connecting frame 17 rotates, the extrusion rod 183 is continuously pressured by the contact ring 186 and reciprocates inside the convex block at the bottom of the mounting frame 15. The reciprocating movement of the extrusion rod 183 drives the spray head 16 to rotate inside the mounting frame 15, increasing the spraying range of the spray head 16. When the smoke concentration is relatively high, the controller pushes the sleeve 7 to move downward on the surface of the rotating block through the electric push rod 105. The downward movement of the sleeve 7 drives the gear to rotate through the rack 102. The rotation of the gear drives the adjusting plate 8 to deflect. When the sleeve 7 moves downward, it drives the second through plate 104 to move downward inside the first through plate 9. The top rod 103 drives the connecting frame 17 to move downward. Subsequently, the motor drives the rotating block to rotate. The rotating block drives the adjusting plate 8 to rotate at the bottom of the housing 1, increasing the airflow inside the housing 1. The infusion pipe 6 transports the reducing agent to the atomizing table 13 through the air pump. The controller heats up the inside of the atomizing table 13. The reducing agent inside the atomizing table 13 forms an aerosol. The shunt pipe 14 sprays the aerosol into the housing 1 through the spray head 16. While the sleeve 7 descends on the surface of the rotating block, it pulls the first piston rod 185 to move downward inside the first oil tank 184, causing the oil in the first oil tank 184 to be injected into the second oil tank 187. The increasing oil inside the second oil tank 187 pushes the second piston rod 188 to drive the contact ring 186 to rise. When the connecting frame 17 drives the shunt pipe 14 to rotate at the top of the atomizing table 13, the contact ring 186 will increase the pressure exerted on the extrusion rod 183, increasing the distance of the reciprocating movement of the convex block at the top of the mounting frame 15, expanding the spraying range of the spray head 16, enabling the atomized reducing agent to fully mix with the smoke. The mixed flue gas passes through the catalytic module below the housing 1 to remove nitrogen oxides in the smoke, and the processed smoke is discharged from the outlet pipe 5.

[0023] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas low-temperature denitration treatment device for environmental protection, comprising a housing (1), characterized in that: At the top of the housing (1), a rotating block is installed through a motor. A sleeve (7) is slidably limited on the surface of the rotating block. At the top end inside the sleeve (7), an air flow regulating component is installed. In the area below the sleeve (7) on the inner wall of the housing (1), a first through plate (9) is installed. Near the middle area on the inner wall of the housing (1), a connecting plate (11) is installed. Inside the air inlet pipe (2), multiple filter plates (12) are installed. At the top of the support rod inside the housing (1), an atomizing table (13) is installed. The top end of the atomizing table (13) is rotatably connected to a shunt pipe (14). At the top of the shunt pipe (14), a mounting frame (15) is installed. Inside the mounting frame (15), a spraying head (16) is rotatably connected. A connecting frame (17) is arranged at the side end of the spraying head (16). At the bottom end of the spraying head (16), an amplitude regulating component is arranged; The amplitude regulating component includes an elastic telescopic rod (181) installed inside the convex block on one side of the bottom end of the mounting frame (15). At the end of the elastic telescopic rod (181), a resisting frame (182) is installed. At the other end of the resisting frame (182), a pressing rod (183) is installed. The pressing rod (183) is slidably limited inside the convex block on the other side of the bottom end of the mounting frame (15). At the bottom of the connecting plate (11), a first oil tank (184) is installed. Inside the first oil tank (184), a first piston rod (185) is slidably limited. It also includes a second oil tank (187) installed at the top of the rotating block. Inside the second oil tank (187), a second piston rod (188) is slidably limited.

2. The flue gas low-temperature denitrification treatment device for environmental protection according to claim 1, characterized in that: On the right side of the top of the housing (1), an air inlet pipe (2) is installed. On the surface of the air inlet pipe (2), a heat exchanger (3) is installed. Near the housing (1) area on the surface of the air inlet pipe (2), a smoke sensor (4) is installed. At the bottom of the housing (1), an air outlet pipe (5) is installed. On the surface of the housing (1), an infusion pipe (6) is installed. In the lower area inside the housing (1), a catalytic module is installed.

3. The flue gas low-temperature denitrification treatment device for environmental protection according to claim 2, characterized in that: The air flow regulating component includes an adjusting plate (8) installed on the surface of the rotating block through a rotating shaft. On the surface of the end of the rotating shaft of the adjusting plate (8), a gear ring (101) is installed. A through groove is formed on the surface of the sleeve (7), and a rack (102) is installed on the side wall of the through groove. The side end of the gear ring (101) is meshed with the rack (102). At the bottom end of the sleeve (7), a top rod (103) is installed. On the bottom wall of the housing (1) at the bottom of the sleeve (7), a second through plate (104) is installed. The air flow regulating component also includes an electric push rod (105) installed at the bottom of the rotating block. The extending end of the electric push rod (105) is connected to the bottom end inner wall of the sleeve (7).

4. The flue gas low-temperature denitrification treatment device for environmental protection according to claim 3, characterized in that: The number of the adjusting plates (8) is four groups, and the four groups of adjusting plates (8) are evenly distributed in a circular shape on the surface of the rotating block.

5. The flue gas low-temperature denitration treatment device for environmental protection according to claim 4, characterized in that: At the bottom of the leakage hole on the surface of the second through plate (104), a connecting pipe is installed. The connecting pipe at the bottom of the second through plate (104) is slidably limited inside the leakage hole inside the first through plate (9). Side through ports are formed inside the leakage holes inside the first through plate (9).

6. The flue gas low-temperature denitration treatment device for environmental protection according to claim 5, characterized in that: The ejector rod (103) is composed of a round rod and a round plate rotatably connected to the surface of the round rod. The round rod rotates inside the first through plate (9), and the bottom of the round plate is connected to the top end of the first through plate (9).

7. An apparatus for low-temperature denitration treatment of flue gas for environmental protection according to claim 6, characterized in that: The end of the infusion tube (6) penetrates through the housing (1), and the end of the infusion tube (6) is connected to the atomization table (13).

8. An apparatus for low-temperature denitration treatment of flue gas for environmental protection according to claim 7, characterized in that: A connecting frame (17) is installed at the bottom of the ejector rod (103). A chute is provided inside the connecting frame (17), and the side end of the mounting frame (15) is limited to slide inside the chute of the connecting frame (17).

9. The flue gas low-temperature denitrification treatment device for environmental protection according to claim 8, wherein: A contact ring (186) is limited to slide inside the housing (1). The first piston rod (185) penetrates through the connecting plate (11) and is connected to the bottom of the contact ring (186). A groove is provided inside the contact ring (186). The groove is in the shape of a semi-cone frustum, with a smaller opening at the upper end and a larger opening at the lower end. The number of the grooves is multiple groups, and multiple groups of the grooves are evenly distributed in a circumferential shape inside the contact ring (186). A hose is connected between the first oil tank (184) and the second oil tank (187).

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