Boiler exhaust gas purification device and use method thereof

Abstract

The present invention discloses a boiler exhaust gas purification device and a method for using the same, and relates to the field of boiler exhaust gas purification, including a refrigeration device and a desulfurization tower, wherein the refrigeration device is used to cool the exhaust gas, a pressure relief port is fixedly installed on the top of the refrigeration device, a water inlet is fixedly installed on the bottom of the refrigeration device, and the desulfurization tower is used to purify the exhaust gas. The cold air generated by the refrigeration device of the present invention will enter the first docking pipeline through the second docking pipeline and mix with the exhaust gas, and the exhaust gas after the temperature reduction treatment will enter the air delivery pipeline, and the contact pipeline is arranged at the rear end of the first docking pipeline, and contacts with the exhaust gas after the refrigeration treatment, so as to ensure the accuracy of the control of the refrigeration device, and the entire refrigeration process is transferred and arranged before the desulfurization treatment, which can directly avoid the problem of excessive temperature during the desulfurization process, and will not affect the desulfurization process.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler exhaust gas purification, and in particular to a boiler exhaust gas purification device and a use method thereof. Background Art

[0002] Boiler exhaust gas purification refers to the treatment of exhaust gas generated by boiler combustion to remove harmful gases and particulate matter in order to reduce pollution to the environment. Common boiler exhaust gas purification methods include flue gas desulfurization.

[0003] For example, the "Industrial Boiler Waste Gas Purification Device" with publication number CN104941365B includes a base, a first frame device, a second frame device, a first pipeline and a filter device. The base is provided with a first support column, a support block, a first through hole, a water outlet pipeline and a first valve. The first frame device includes a first frame, a first fixed block, a support rod and a second through hole. The second frame device includes a second frame, a first baffle and a second support column. The first pipeline is provided with an air inlet pipe, a third valve and a first filter.

[0004] However, in the prior art, during the treatment of boiler exhaust gas, the temperature plays a decisive role in the desulfurization efficiency. In the actual treatment process, the exhaust gas produced by the boiler is in a high-temperature state. When entering the desulfurization chamber, it will directly cause the temperature of the desulfurization chamber to rise. During the desulfurization process, the exhaust gas continues to enter the desulfurization tower, and the temperature in the tower is always in a state of continuous increase. Therefore, a separate refrigeration device is required to suppress the temperature in the tower. The traditional refrigeration device has a lag in temperature control, that is, during the monitoring process, the cooling capacity will be adjusted only after the temperature monitor detects high temperature. However, at this time, the actual temperature in the desulfurization tower has exceeded the standard and is still rising. In addition, it will take some time for the temperature to drop. Therefore, in the process of increasing the cooling capacity, the desulfurization effect will fluctuate, which will directly affect the entire desulfurization process. Summary of the invention

[0005] The purpose of the present invention is to provide a boiler exhaust gas purification device and a method of using the same, so as to solve the problem raised in the above background technology that the traditional refrigeration device has a lag in temperature control, that is, during the monitoring process, the refrigeration capacity will not be adjusted until the temperature detector detects high temperature.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a boiler exhaust gas purification device and a method of using the same, comprising a refrigeration device and a desulfurization tower, the refrigeration device is used to cool the exhaust gas, a pressure relief port is fixedly installed on the top of the refrigeration device, a water inlet is fixedly installed on the bottom of the refrigeration device, the desulfurization tower is used to purify the exhaust gas, an air supply pipeline is fixedly connected between the refrigeration device and the desulfurization tower, the air supply pipeline is used to transport the exhaust gas, a control component is provided at the junction of the air supply pipeline and the refrigeration device, and the air supply pipeline is used to control the refrigeration efficiency of the refrigeration device;

[0007] The control assembly comprises a first docking pipe, a second docking pipe, and a contact pipe, wherein the first docking pipe and the second docking pipe are perpendicular to each other in the horizontal direction, one end of the second docking pipe is fixedly connected to the first docking pipe, the second docking pipe is connected to the refrigeration device, one end of the contact pipe is fixedly connected to the inside of the first docking pipe, a heat conduction block is fixedly installed inside the contact pipe, and the main material of the heat conduction block is graphite, and at least one of carbon nanotubes, graphene and ceramic powder is mixed;

[0008] A bifurcated pipe is fixedly installed on the top of the second docking pipe, a feedback pipe is fixedly connected to the top of the bifurcated pipe, an adjustment component is fixedly installed inside the second docking pipe, one end of the feedback pipe is connected to one end of the contact pipe, hydrogen is arranged inside the feedback pipe, a movable plate is arranged at the junction of the bifurcated pipe and the feedback pipe, a transmission rod is fixedly connected to the bottom of the movable plate, the bottom of the transmission rod is rotatably connected to the adjustment component, and the transmission rod passes through the bifurcated pipe and the second docking pipe.

[0009] Preferably, a positioning groove is provided on the outer wall of the heat conducting block, and a limiting protrusion is fixedly installed on the inner wall of the contact pipe, and the thickness of the limiting protrusion is equal to the thickness of the positioning groove.

[0010] Preferably, a return spring is fixedly installed on the lower surface of the movable plate, and the return spring is sleeved on the outside of the transmission rod. The other end of the return spring is fixedly connected to the inner wall of the forked pipe, and a ventilation pipe is fixedly installed on one side of the second docking pipe, and a filter is fixedly installed at the junction of the second docking pipe and the ventilation pipe.

[0011] Preferably, an inclined thickened layer is fixedly installed at the junction of the second docking pipe and the first docking pipe, an opening is opened inside the inclined thickened layer, a support block is fixedly installed on the inner wall of the opening, the adjustment component is located on the top of the inclined thickened layer, a connecting pipe is fixedly installed inside the second docking pipe, and a filter is fixedly installed at the junction of the connecting pipe and the refrigeration device.

[0012] Preferably, the adjustment assembly includes a support plate, a direction-adjusting rotating rod and a position-limiting rotating rod, a first positioning rod and a second positioning rod are fixedly installed inside the support plate, and the first positioning rod is located obliquely above the second positioning rod, one end of the direction-adjusting rotating rod is rotatably connected to the outer wall of the first positioning rod, and one end of the position-limiting rotating rod is rotatably connected to the outer wall of the second positioning rod.

[0013] Preferably, the other end of the direction-adjusting rotating rod is rotatably connected to a bending rod, the other end of the position-limiting rotating rod is rotatably connected to the inside of the bending rod, the direction-adjusting rotating rod is located at the end of the bending rod, the position-limiting rotating rod is located in the middle section of the bending rod, and a blocking plate is fixedly installed on one side of the bending rod.

[0014] Preferably, one end of the direction-adjusting rotating rod is fixedly connected to an extension rod, both sides of the extension rod are rotatably connected to double-headed rotating rods, the other end of the double-headed rotating rod is rotatably connected to a connecting rod, and the connecting rod is fixedly installed at the edge of the transmission rod.

[0015] A method for using a boiler exhaust gas purification device comprises the following steps:

[0016] S1. Transporting exhaust gas: installing a delivery pipeline at one end of the first docking pipeline and connecting the delivery pipeline to the boiler exhaust pipeline, so that the exhaust gas generated by the boiler is processed by the refrigeration device and then enters the desulfurization tower through the air delivery pipeline;

[0017] S2. Exhaust gas cooling: The refrigeration device reduces the temperature of the exhaust gas and prevents the steam from condensing into acid rain during discharge by reducing the temperature of the water vapor in the exhaust gas;

[0018] S3, desulfurization and purification, the desulfurization tower uses gypsum wet desulfurization and other methods to remove sulfur dioxide and other sulfides in the exhaust gas, reducing the formation of acid rain and pollution to the environment

[0019] S4, waste gas emission. After the waste gas treated in step S2 and step S3 reaches the emission standard, it can be discharged into the atmosphere through a chimney, or treated by recycling and other methods.

[0020] Preferably, in step S2, the refrigeration device lowering the exhaust gas temperature further comprises the following steps:

[0021] S21, the cold air generated by the refrigeration device is sent into the first docking pipe through the second docking pipe, so that the cold air is mixed with the exhaust gas, thereby reducing the temperature of the water vapor and the temperature of the flue gas;

[0022] S22. The exhaust gas after the cooling treatment contacts the heat conducting block. The heat in the exhaust gas will directly change the temperature of the heat conducting block. When the temperature of the heat conducting block is kept within a stable range, the hydrogen in the feedback pipe will not be heated.

[0023] S23. When the exhaust gas temperature is too high, the temperature of the heat conductive block will rise synchronously. At this time, the heat conductive block will heat the hydrogen in the feedback pipe, increasing the volume of the hydrogen and thereby pushing the movable plate;

[0024] S24. The downward movement of the movable plate will change the state of the regulating component, expand the total output of cold air, and further reduce the temperature of the exhaust gas until the exhaust gas temperature returns to normal levels, thereby causing the temperature of the heat transfer block to return to normal levels. At this time, the volume of hydrogen becomes smaller, allowing the movable plate to move back to the initial position and the regulating component to return to its initial state.

[0025] Preferably, in step S24, the downward movement of the movable plate to change the state of the adjustment component further comprises the following steps:

[0026] S241, the movable plate moves downward and pushes the double-headed rotating rod through the transmission rod. While the double-headed rotating rod is driven downward, it also drives the turning rod;

[0027] S242, the direction-adjusting rotating rod rotates with the first positioning rod as the center, raising the height of one end of the bending rod. At the same time, since the middle section of the bending rod is also limited by the limiting rotating rod on the second positioning rod, the bending rod will drive the blocking plate to move in an oblique upward direction to expose a larger opening.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, the cold air generated by the refrigeration device will enter the first docking pipe through the second docking pipe and mix with the exhaust gas. The exhaust gas after the cooling treatment will enter the air supply pipe. The contact pipe is arranged at the rear end of the first docking pipe and contacts with the exhaust gas after the refrigeration treatment, which can ensure the accuracy of the control of the refrigeration device. In addition, the entire refrigeration process is arranged before the desulfurization treatment, which can directly avoid the problem of excessive temperature in the desulfurization process and will not affect the desulfurization process. The temperature of the exhaust gas will be directly transferred to the heat-conducting block in the contact pipe. The heat-conducting block is mainly made of graphite. The thermal conductivity of graphite is better than that of many metals. The layered structure enables heat to be quickly transferred along the layers, so the temperature rises rapidly. At the same time, due to its relatively small heat capacity, the temperature drops relatively quickly. At least one of carbon nanotubes, graphene and ceramic powder is also mixed therein. The unique nanostructure and extremely high thermal conductivity of the carbon nanotubes can quickly disperse heat to the entire material when the temperature rises, and can also quickly release heat when the temperature drops, which can greatly improve the thermal conductivity.

[0030] 2. In the present invention, the refrigeration device lowers the exhaust gas temperature in advance, and prevents the steam from condensing into acid rain during discharge by lowering the temperature of water vapor in the exhaust gas. At the same time, a filter is provided at the junction of the second docking pipe and the ventilation pipe to prevent water vapor from entering the first docking pipe. The support block on the wall can support part of the structure of the adjustment component. The blocking plate in the adjustment component covers the opening to control the outflow of cold air. The gap is blocked by the support block. There is only one small opening for the circulation of cold air as a whole to avoid excessive cooling.

[0031] 3. In the present invention, when the transmission rod moves downward, the connecting rod at the edge will push the double-headed rotating rod. When the double-headed rotating rod moves downward, it will press down one end of the adjusting rotating rod, causing the adjusting rotating rod to rotate with the first positioning rod as the center. The adjusting rotating rod will raise the height of one end of the bending rod. Since the middle section of the bending rod is restricted by the limiting rotating rod, the bending rod will drive the blocking plate to move in an oblique upward direction, exposing a larger opening to increase the outflow of cold air. When the double-headed rotating rod moves upward, the blocking plate moves again to the top of the opening for blocking, thereby reducing the outflow of cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a boiler exhaust gas purification device of the present invention;

[0033] Figure 2 A side view of a boiler exhaust gas purification device according to the present invention;

[0034] Figure 3 This is a schematic diagram of the pipeline structure of a control component of a boiler exhaust gas purification device of the present invention;

[0035] Figure 4 This is a schematic diagram of the internal structure of a control component pipeline of a boiler exhaust gas purification device of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of a first butt joint pipeline and a second butt joint pipeline of a boiler exhaust gas purification device of the present invention;

[0037] Figure 6 This is a schematic diagram of the second docking pipeline structure of a boiler exhaust gas purification device of the present invention;

[0038] Figure 7 A schematic diagram of the connection and structure of a transmission rod and an adjustment assembly of a boiler exhaust gas purification device according to the present invention;

[0039] Figure 8 For the present invention Figure 2 A schematic diagram of the structure of part A in the middle;

[0040] Fig. 9 A front view showing a structural change of an adjustment component of a boiler exhaust gas purification device according to the present invention;

[0041] Fig.10 This is a bottom view of the structural changes of the adjustment components of a boiler exhaust gas purification device according to the present invention.

[0042] In the figure: 1. refrigeration device; 2. control component; 3. air supply pipeline; 4. desulfurization tower; 5. ventilation pipeline; 6. water inlet; 7. pressure relief port; 8. adjustment component; 21. first docking pipeline; 22. second docking pipeline; 23. bifurcated pipeline; 24. feedback pipeline; 25. connecting pipeline; 26. filter screen; 27. contact pipeline; 28. heat transfer block; 29. ​​limiting protrusion; 210. positioning groove; 211. movable plate; 212. transmission rod; 213. return spring; 214. inclined thickening layer; 215. opening; 216. support block; 81. support plate; 82. first positioning rod; 83. second positioning rod; 84. direction adjustment rod; 85. limiting rod; 86. bending rod; 87. blocking plate; 88. extension rod; 89. double-headed rod; 810. connecting rod. DETAILED DESCRIPTION

[0043] 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 implementation regulations described 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.

[0044] Embodiment 1

[0045] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown: a boiler exhaust gas purification device, including a refrigeration device 1 and a desulfurization tower 4, the refrigeration device 1 is used to cool the exhaust gas, a pressure relief port 7 is fixedly installed on the top of the refrigeration device 1, a water inlet 6 is fixedly installed on the bottom of the refrigeration device 1, the desulfurization tower 4 is used to purify the exhaust gas, an air supply pipe 3 is fixedly connected between the refrigeration device 1 and the desulfurization tower 4, the air supply pipe 3 is used to transport the exhaust gas, and a control component 2 is provided at the junction of the air supply pipe 3 and the refrigeration device 1, and the air supply pipe 3 is used to control the refrigeration efficiency of the refrigeration device 1;

[0046] The control component 2 includes a first docking pipe 21, a second docking pipe 22, and a contact pipe 27. The first docking pipe 21 and the second docking pipe 22 are perpendicular to each other in the horizontal direction. One end of the second docking pipe 22 is fixedly connected to the first docking pipe 21, and the second docking pipe 22 is connected to the refrigeration device 1. One end of the contact pipe 27 is fixedly connected to the inside of the first docking pipe 21. A heat conduction block 28 is fixedly installed inside the contact pipe 27. The main material of the heat conduction block 28 is graphite, and at least one of carbon nanotubes, graphene and ceramic powder is mixed;

[0047] A forked pipe 23 is fixedly installed on the top of the second docking pipe 22, a feedback pipe 24 is fixedly connected to the top of the forked pipe 23, an adjustment component 8 is fixedly installed inside the second docking pipe 22, one end of the feedback pipe 24 is connected to one end of the contact pipe 27, hydrogen is arranged inside the feedback pipe 24, a movable plate 211 is arranged at the junction of the forked pipe 23 and the feedback pipe 24, a transmission rod 212 is fixedly connected to the bottom of the movable plate 211, the bottom of the transmission rod 212 is rotatably connected to the adjustment component 8, and the transmission rod 212 passes through the forked pipe 23 and the second docking pipe 22.

[0048] In this embodiment, the air delivery pipe 3 is connected to the boiler through the first docking pipe 21. After the exhaust gas generated by the boiler is cooled by the refrigeration device 1, it is sent to the desulfurization tower 4 through the air delivery pipe 3. The desulfurization tower 4 is used to treat sulfur dioxide and sulfide in the exhaust gas. When the exhaust gas passes through the first docking pipe 21, the cold air generated by the refrigeration device 1 enters the first docking pipe 21 through the second docking pipe 22 and mixes with the exhaust gas. The exhaust gas after the temperature reduction treatment enters the air delivery pipe 3 again;

[0049] The temperature of the exhaust gas will be directly transferred to the heat-conducting block 28 in the contact pipe 27. The heat-conducting block 28 is mainly made of graphite. The thermal conductivity of graphite is better than that of many metals. The layered structure allows heat to be quickly transferred along the layers, so the temperature rises quickly. At the same time, due to its relatively small heat capacity, the temperature drops relatively quickly. At least one of carbon nanotubes, graphene and ceramic powder is also mixed therein. The unique nanostructure and extremely high thermal conductivity of the carbon nanotubes can quickly disperse heat to the entire material when the temperature rises, and can also quickly release heat when the temperature drops, which can greatly improve the thermal conductivity. The heat-conducting block 28 is initially consistent with the temperature of the hydrogen in the feedback pipe 24. When the exhaust gas temperature is too high, the temperature of the heat-conducting block 28 will also rise. At this time, the heat-conducting block 28 will heat the hydrogen in the feedback pipe 24, causing the volume of the hydrogen to change.

[0050] The increased volume of hydrogen will push the movable plate 211 downward, and the state of the regulating assembly 8 will be changed through the transmission rod 212 to expand the output of cold air. One end of the second docking pipe 22 is connected to the refrigeration device 1, and the top is connected to the feedback pipe 24 through the bifurcated pipe 23, ensuring that the transmission rod 212 will not affect the normal use of the refrigeration device 1. The contact pipe 27 is arranged at the rear end of the first docking pipe 21 to contact the exhaust gas after the refrigeration treatment, which can ensure the accuracy of the control of the refrigeration device 1.

[0051] Fig. 9 X is high-temperature exhaust gas, Y is cold air, Q is heat, N is the pressure on the movable plate 211 when the volume of hydrogen increases, and H2 is hydrogen.

[0052] Embodiment 2

[0053] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: a positioning groove 210 is provided on the outer wall of the heat conducting block 28, a limiting protrusion 29 is fixedly installed on the inner wall of the contact pipe 27, and the thickness of the limiting protrusion 29 is equal to the thickness of the positioning groove 210, a return spring 213 is fixedly installed on the lower surface of the movable plate 211, and the return spring 213 is sleeved on the outside of the transmission rod 212, and the other end of the return spring 213 is fixedly connected to the inner wall of the bifurcated pipe 23, and a ventilation pipe 5 is fixedly installed on one side of the second docking pipe 22, and the second docking pipe 22 A filter screen 26 is fixedly installed at the junction with the ventilation duct 5, an inclined thickened layer 214 is fixedly installed at the junction of the second docking duct 22 and the first docking duct 21, an opening 215 is opened inside the inclined thickened layer 214, a support block 216 is fixedly installed on the inner wall of the opening 215, the adjustment component 8 is located on the top of the inclined thickened layer 214, a connecting duct 25 is fixedly installed inside the second docking duct 22, and a filter screen 26 is fixedly installed at the junction of the connecting duct 25 and the refrigeration device 1.

[0054] In this embodiment, the positioning groove 210 on the surface of the heat conductive block 28 is used to determine the position of the heat conductive block 28 and to provide free space for the heat conductive block 28 to increase in volume. The heat conductive block 28 maintains the same temperature as the exhaust gas. When the exhaust gas temperature is too high, it will heat the hydrogen in the feedback pipe 24. The volume expansion of the hydrogen will push the movable plate 211 to move downward.

[0055] The movable plate 211 drives the regulating assembly 8 to operate through the transmission rod 212. The regulating assembly 8 covers the opening 215 to control the outflow of cold air. The inclined thickening layer 214 is used to limit the specific position of the regulating assembly 8. The support block 216 on the inner wall of the opening 215 can support part of the structure of the regulating assembly 8. A filter screen 26 is provided at the junction of the second docking pipe 22 and the ventilation pipe 5 to prevent water vapor from entering the first docking pipe 21.

[0056] When the movable plate 211 moves downward, the return spring 213 on the outer wall of the transmission rod 212 is also compressed. When the temperatures of the exhaust gas and the heat-conducting block 28 return to the normal range, the volume of hydrogen decreases, and the return spring 213 bounces the movable plate 211 back to its initial position, so that the adjustment component 8 also returns to its initial state.

[0057] Embodiment 3

[0058] Reference Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown: the adjustment assembly 8 includes a supporting plate 81, a direction-adjusting rotating rod 84 and a limiting rotating rod 85. A first positioning rod 82 and a second positioning rod 83 are fixedly installed inside the supporting plate 81, and the first positioning rod 82 is located obliquely above the second positioning rod 83. One end of the direction-adjusting rotating rod 84 is rotatably connected to the outer wall of the first positioning rod 82, and one end of the limiting rotating rod 85 is rotatably connected to the outer wall of the second positioning rod 83. The other end of the direction-adjusting rotating rod 84 is rotatably connected to the bending rod 86, and the other end of the limiting rotating rod 85 is rotatably connected to the inside of the bending rod 86. The direction-adjusting rotating rod 84 is located at the end of the bending rod 86, and the limiting rotating rod 85 is located at the middle section of the bending rod 86. A blocking plate 87 is fixedly installed on one side of the bending rod 86. An extension rod 88 is fixedly connected to one end of the direction-adjusting rotating rod 84, and double-headed rotating rods 89 are rotatably connected on both sides of the extension rod 88. The other end of the double-headed rotating rod 89 is rotatably connected to a connecting rod 810, and the connecting rod 810 is fixedly installed at the edge of the transmission rod 212.

[0059] In this embodiment, the support plate 81 is fixedly mounted on the inner wall of the second docking pipe 22 to determine the height of the adjustment rotating rod 84 and one end of the limit rotating rod 85. In the initial state, the blocking plate 87 covers the opening 215, and the gap is blocked by the support block 216. The whole has only one small opening for the circulation of cold air. When the transmission rod 212 moves downward, the connecting rod 810 at the edge will push the double-headed rotating rod 89;

[0060] When the double-headed rotating rod 89 moves downward, it will press down one end of the adjusting rotating rod 84, causing the adjusting rotating rod 84 to rotate with the first positioning rod 82 as the center. The adjusting rotating rod 84 will lift one end of the bending rod 86 to a certain height. Since the middle section of the bending rod 86 is restricted by the limiting rotating rod 85, the bending rod 86 will drive the blocking plate 87 to move in an oblique upward direction, thereby increasing the outflow of cold air.

[0061] Embodiment 4

[0062] The calculation method for the increase in volume of hydrogen uses the ideal gas law in conjunction with Charles' law;

[0063] The ideal gas law formula is: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature (in Kelvin);

[0064] Charles' law is: V1 / T1=V2 / T2, where V1 and T1 are the initial volume and temperature of the gas, and V2 and T2 are the volume and temperature of the gas after the change;

[0065] Assume that the initial temperature of hydrogen is 40°C, the temperature rises by 50°C, and the volume is 1m 3 , and the pressure remains unchanged, we can get:

[0066] T1 = 40 + 273.15 = 313.15K;

[0067] T2 = T1 + 50 = 363.15K;

[0068] Substituting T1 and T2 into the above formula yields:

[0069] ΔV=V2-V1=0.1597m 3 ;

[0070] Theoretically, for every 50°C rise in temperature, the volume of hydrogen increases by 0.1597m 3 , ensuring that the feedback pipe 24 has enough space to accommodate hydrogen.

[0071] The use method and working principle of the device: the first step is to transport the exhaust gas. A transport pipeline is installed at one end of the first docking pipeline 21, and the transport pipeline is connected to the boiler exhaust pipeline, so that the exhaust gas generated by the boiler is processed by the refrigeration device 1 and then enters the desulfurization tower 4 through the air delivery pipeline 3;

[0072] The second step is to cool the exhaust gas. The refrigeration device 1 reduces the exhaust gas temperature and prevents the exhaust gas from condensing into acid rain by reducing the temperature of the water vapor in the exhaust gas.

[0073] The cold air generated by the refrigeration device 1 is sent into the first docking pipe 21 through the second docking pipe 22, so that the cold air is mixed with the exhaust gas, thereby reducing the temperature of the water vapor and the temperature of the flue gas;

[0074] The exhaust gas after the cooling treatment contacts the heat conducting block 28, and the heat in the exhaust gas will directly change the temperature of the heat conducting block 28. When the temperature of the heat conducting block 28 is kept within a stable range, the hydrogen in the feedback pipe 24 will not be heated.

[0075] When the exhaust gas temperature is too high, the temperature of the heat conductive block 28 will rise synchronously, and the heat conductive block 28 will heat the hydrogen in the feedback pipe 24, so that the volume of the hydrogen increases, thereby pushing the movable plate 211;

[0076] The downward movement of the movable plate 211 will change the state of the regulating component 8, increase the total output of cold air, and further reduce the temperature of the exhaust gas until the exhaust gas temperature returns to a normal level, thereby causing the temperature of the heat conducting block 28 to also return to a normal level. At this time, the volume of hydrogen becomes smaller, allowing the movable plate 211 to move back to the initial position, and allowing the regulating component 8 to also return to its initial state;

[0077] The movable plate 211 moves downward and pushes the double-headed rotating rod 89 through the transmission rod 212. When the double-headed rotating rod 89 is driven downward, it also drives the direction-adjusting rotating rod 84.

[0078] The direction-adjusting rotating rod 84 rotates with the first positioning rod 82 as the center of the circle, lifting one end of the bending rod 86 to a certain height. At the same time, since the middle section of the bending rod 86 is also limited by the position-limiting rotating rod 85 on the second positioning rod 83, the bending rod 86 drives the blocking plate 87 to move in an obliquely upward direction, exposing a larger opening 215.

[0079] The third step is desulfurization and purification. The desulfurization tower 4 uses gypsum wet desulfurization and other methods to remove sulfur dioxide and other sulfides in the exhaust gas, reducing the formation of acid rain and pollution to the environment.

[0080] The fourth step is waste gas emission. After the treated waste gas meets the emission standards, it can be discharged into the atmosphere through the chimney, or treated through recycling and other methods.

[0081] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler exhaust gas purification device, comprising a refrigeration device (1) and a desulfurization tower (4), wherein the refrigeration device (1) is used to cool the exhaust gas, a pressure relief port (7) is fixedly installed on the top of the refrigeration device (1), and a water inlet (6) is fixedly installed on the bottom of the refrigeration device (1), and the desulfurization tower (4) is used to purify the exhaust gas, characterized in that: An air supply pipe (3) is fixedly connected between the refrigeration device (1) and the desulfurization tower (4), and the air supply pipe (3) is used to transport waste gas. A control component (2) is provided at the junction of the air supply pipe (3) and the refrigeration device (1), and the air supply pipe (3) is used to control the refrigeration efficiency of the refrigeration device (1); The control component (2) comprises a first docking pipe (21), a second docking pipe (22), and a contact pipe (27); the first docking pipe (21) and the second docking pipe (22) are perpendicular to each other in the horizontal direction; one end of the second docking pipe (22) is fixedly connected to the first docking pipe (21); the second docking pipe (22) is connected to the refrigeration device (1); one end of the contact pipe (27) is fixedly connected to the inside of the first docking pipe (21); a heat conducting block (28) is fixedly installed inside the contact pipe (27); the main material of the heat conducting block (28) is graphite, and at least one of carbon nanotubes, graphene and ceramic powder is mixed therein; A bifurcated pipe (23) is fixedly installed on the top of the second docking pipe (22), a feedback pipe (24) is fixedly connected to the top of the bifurcated pipe (23), an adjustment component (8) is fixedly installed inside the second docking pipe (22), one end of the feedback pipe (24) is connected to one end of the contact pipe (27), hydrogen is arranged inside the feedback pipe (24), a movable plate (211) is arranged at the intersection of the bifurcated pipe (23) and the feedback pipe (24), a transmission rod (212) is fixedly connected to the bottom of the movable plate (211), the bottom of the transmission rod (212) is rotatably connected to the adjustment component (8), and the transmission rod (212) passes through the bifurcated pipe (23) and the second docking pipe (22).

2. A boiler exhaust gas purification device according to claim 1, characterized in that: A positioning groove (210) is provided on the outer wall of the heat conducting block (28), and a limiting protrusion (29) is fixedly installed on the inner wall of the contact pipe (27), wherein the thickness of the limiting protrusion (29) is equal to the thickness of the positioning groove (210).

3. A boiler exhaust gas purification device according to claim 2, characterized in that: A return spring (213) is fixedly mounted on the lower surface of the movable plate (211), and the return spring (213) is sleeved on the outside of the transmission rod (212). The other end of the return spring (213) is fixedly connected to the inner wall of the bifurcated pipe (23). A ventilation pipe (5) is fixedly mounted on one side of the second docking pipe (22), and a filter screen (26) is fixedly mounted at the junction of the second docking pipe (22) and the ventilation pipe (5).

4. A boiler exhaust gas purification device according to claim 3, characterized in that: An inclined thickening layer (214) is fixedly installed at the intersection of the second docking pipe (22) and the first docking pipe (21), an opening (215) is provided inside the inclined thickening layer (214), a support block (216) is fixedly installed on the inner wall of the opening (215), the adjustment component (8) is located at the top of the inclined thickening layer (214), a connecting pipe (25) is fixedly installed inside the second docking pipe (22), and a filter screen (26) is fixedly installed at the intersection of the connecting pipe (25) and the refrigeration device (1).

5. A boiler exhaust gas purification device according to claim 4, characterized in that: The adjustment assembly (8) comprises a support plate (81), a direction-adjusting rotating rod (84) and a position-limiting rotating rod (85); a first positioning rod (82) and a second positioning rod (83) are fixedly installed inside the support plate (81), and the first positioning rod (82) is located obliquely above the second positioning rod (83); one end of the direction-adjusting rotating rod (84) is rotatably connected to the outer wall of the first positioning rod (82), and one end of the position-limiting rotating rod (85) is rotatably connected to the outer wall of the second positioning rod (83).

6. A boiler exhaust gas purification device according to claim 5, characterized in that: The other end of the direction-adjusting rotating rod (84) is rotatably connected to a bending rod (86), and the other end of the position-limiting rotating rod (85) is rotatably connected to the inside of the bending rod (86). The direction-adjusting rotating rod (84) is located at the end of the bending rod (86), and the position-limiting rotating rod (85) is located in the middle section of the bending rod (86). A blocking plate (87) is fixedly installed on one side of the bending rod (86).

7. A boiler exhaust gas purification device according to claim 6, characterized in that: One end of the direction-adjusting rotating rod (84) is fixedly connected to an extension rod (88), both sides of the extension rod (88) are rotatably connected to double-headed rotating rods (89), and the other end of the double-headed rotating rod (89) is rotatably connected to a connecting rod (810), and the connecting rod (810) is fixedly installed at the edge of the transmission rod (212).

8. A method for using a boiler exhaust gas purification device, characterized in that: A boiler exhaust gas purification device according to any one of claims 1 to 7 is used, comprising the following steps: S1, conveying waste gas, installing a conveying pipeline at one end of the first docking pipeline (21), and connecting the conveying pipeline with the boiler exhaust pipeline, so that the waste gas generated by the boiler is processed by the refrigeration device (1) and then enters the desulfurization tower (4) through the air delivery pipeline (3); S2, exhaust gas cooling, refrigeration device (1) reduces the exhaust gas temperature, by reducing the temperature of water vapor in the exhaust gas, to prevent the steam from condensing into acid rain during discharge; S3, desulfurization and purification, the desulfurization tower (4) uses gypsum wet desulfurization to remove sulfur dioxide and sulfide in the exhaust gas, reducing the formation of acid rain and pollution to the environment S4, waste gas emission: after the waste gas treated in step S2 and step S3 reaches the emission standard, it is discharged into the atmosphere through a chimney, or treated by recycling.

9. The method for using a boiler exhaust gas purification device according to claim 8, characterized in that: In step S2, the refrigeration device (1) further comprises the following steps of reducing the exhaust gas temperature: S21, the refrigeration device (1) generates cold air which is sent into the first docking pipe (21) through the second docking pipe (22), so that the cold air is mixed with the exhaust gas, thereby reducing the temperature of the water vapor and the temperature of the flue gas; S22, the exhaust gas after the temperature reduction treatment contacts the heat conductive block (28), and the heat in the exhaust gas will directly change the temperature of the heat conductive block (28). When the temperature of the heat conductive block (28) is kept within a stable range, the hydrogen in the feedback pipe (24) will not be heated; S23, when the exhaust gas temperature is too high, the temperature of the heat conducting block (28) will rise synchronously, and the heat conducting block (28) will heat the hydrogen in the feedback pipe (24), thereby increasing the volume of the hydrogen and thereby pushing the movable plate (211); S24. The downward movement of the movable plate (211) will change the state of the regulating component (8), increase the total output of cold air, and further reduce the temperature of the exhaust gas until the exhaust gas temperature returns to a normal level, thereby causing the temperature of the heat conductive block (28) to also return to a normal level. At this time, the volume of hydrogen becomes smaller, allowing the movable plate (211) to move back to the initial position, and allowing the regulating component (8) to also return to its initial state.

10. The method for using a boiler exhaust gas purification device according to claim 9, characterized in that: In step S24, the downward movement of the movable plate (211) changes the state of the adjustment component (8) and further comprises the following steps: S241, the movable plate (211) moves downward and pushes the double-headed rotating rod (89) through the transmission rod (212). While the double-headed rotating rod (89) is driven downward, it also drives the direction-adjusting rotating rod (84); S242, the direction-adjusting rotating rod (84) rotates with the first positioning rod (82) as the center, raising the height of one end of the bending rod (86). At the same time, since the middle section of the bending rod (86) is also limited in position by the limiting rotating rod (85) on the second positioning rod (83), the bending rod (86) will drive the blocking plate (87) to move in an obliquely upward direction, exposing a larger opening (215).

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