A flue gas reheating device after wet flue gas purification

Abstract

This invention relates to the field of flue gas reheating technology, and more particularly to a flue gas reheating device after wet flue gas purification. The device includes a base, an inlet pipe, a purification rod, an unpurified gas pipe, a first curved gas pipe, a second curved gas pipe, a third curved gas pipe, a fourth curved gas pipe, a first cylindrical cavity, a second cylindrical cavity, a third cylindrical cavity, a fourth cylindrical cavity, a first curved guide tube, a second curved guide tube, a third curved guide tube, a fourth curved guide tube, a mixing device, a heating device, and a cooling device. The first cylindrical cavity, the second cylindrical cavity, the third cylindrical cavity, and the fourth cylindrical cavity are sequentially installed from bottom to top on the upper end of the base. This invention uses multiple cylindrical cavities to heat the flue gas in layers and stages. The mixing device mixes the flue gas heated to different temperatures, and the flue gas flow rate in each curved guide tube can be adjusted via gas pipe valves to regulate the temperature of the flue gas to be emitted, ensuring the purified gas is emitted at a stable temperature of 80°C and preventing the formation of white smoke.

Description

Technical Field

[0001] This invention relates to the field of flue gas reheating technology, and more particularly to a flue gas reheating device after wet flue gas purification. Background Technology

[0002] The clean flue gas is heated by passing through a flue gas reheater and then discharged directly through a chimney. The discharged flue gas enters the ambient air at a lower temperature. Due to the low saturation humidity of the ambient air, the water vapor in the flue gas will condense to form a wet plume as the flue gas temperature decreases.

[0003] Currently, the common practice is to heat the purified flue gas with unpurified hot flue gas. However, the process of heating the purified flue gas is a single-stage process, where the flue gas is heated only once before entering the purification equipment. It is impossible to transfer the heat energy of the unpurified flue gas to the purified flue gas in stages to achieve segmented heating. This makes it difficult to implement effective temperature regulation measures for the purified flue gas. When the reheated flue gas needs to be discharged, the unstable ambient temperature increases the difficulty of eliminating white spots in the flue gas. Summary of the Invention

[0004] In order to overcome the shortcomings of existing flue gas reheating equipment, which cannot transfer the heat energy of unpurified flue gas to purified flue gas in stages to achieve segmented heating, make it difficult to effectively regulate the temperature of purified flue gas, and make it difficult to eliminate whitening of flue gas, the present invention aims to provide a flue gas reheating equipment after wet flue gas purification.

[0005] To address the aforementioned technical problems, this invention provides a flue gas reheating device after wet flue gas purification, comprising a base, an inlet pipe, a purification rod, an unpurified gas pipe, a first curved gas pipe, a second curved gas pipe, a third curved gas pipe, a fourth curved gas pipe, a first cylindrical cavity, a second cylindrical cavity, a third cylindrical cavity, a fourth cylindrical cavity, a first curved guide tube, a second curved guide tube, a third curved guide tube, a fourth curved guide tube, a mixing device, a heating device, and a cooling device. The first cylindrical cavity, the second... The system comprises a first cylindrical cavity, a second cylindrical cavity, a third cylindrical cavity, and a fourth cylindrical cavity. An unpurified gas pipe is fitted inside the first cylindrical cavity. The top of the unpurified gas pipe sequentially passes through the first, second, third, and fourth cylindrical cavities. The lower end of the unpurified gas pipe passes through the bottom front end of the first cylindrical cavity, and the upper end passes through the top front end of the fourth cylindrical cavity. The unpurified gas pipe allows unpurified high-temperature flue gas to circulate. A first... The system includes a first, second, third, and fourth air bend pipe. The left ends of the first, second, third, and fourth air bend pipes are all connected to a purification rod. An air inlet pipe is installed on the left end of the purification rod. The purification rod allows the low-temperature purified flue gas to simultaneously enter the first, second, third, and fourth air bend pipes. A mixing device is installed on the right side of the base. From bottom to top, the first, second, third, and fourth air bend pipes are installed on the left side of the mixing device. The first air bend pipe, the second air bend pipe... The right ends of the curved pipe, the third curved pipe, and the fourth curved pipe are connected to the first curved pipe, the second curved pipe, the third curved pipe, and the fourth curved pipe, respectively. The first curved pipe, the second curved pipe, the third curved pipe, and the fourth curved pipe are used to introduce the purified flue gas into the mixing device. The mixing device is used to mix purified flue gas of various temperatures. A heating device is connected to the mixing device to heat the purified flue gas that is too cold. A cooling device is connected to the upper end of the mixing device to cool the purified flue gas that is too hot.

[0006] Preferably, the mixing device includes a mixing shell, a motor, a screw shaft, and a thermometer. The mixing shell is installed on the top right side of the base, the motor is installed at the bottom of the mixing shell, the output shaft of the motor is equipped with a screw shaft, the screw shaft is used to stir and mix the flue gas, and the thermometer is installed on the top right side of the mixing shell, the thermometer is used to detect the temperature of the flue gas flowing out of the mixing shell.

[0007] Preferably, the cooling device includes a water tank, a water pump, a cooling sleeve, a hose, and a water pipe. The water tank is installed on the top of the mixing shell, and a cooling sleeve is fitted on the outer side of the upper part of the mixing shell. The cooling sleeve is used to cool the flue gas with excessively high temperature. A hose is connected to the lower right side of the water tank. The water pump is installed on the cooling sleeve. The water inlet of the water pump is connected to the hose, and the water outlet of the water pump is connected to the cooling sleeve through a pipe. A water pipe is installed on the left side of the cooling sleeve, and the top of the water pipe is connected to the water tank. The water pipe is used to return the water that has passed through the cooling sleeve to the water tank through the water pump.

[0008] Preferably, the heating device includes a hollow cavity, a temperature sensor, a gas guide pipe, a solenoid valve, and a controller. The hollow cavity is connected to the right end of the mixing shell, and the gas guide pipe is connected to the bottom of the hollow cavity. The left end of the gas guide pipe is connected to the unpurified gas pipe. The gas guide pipe is used to introduce high-temperature unpurified flue gas into the hollow cavity. A temperature sensor is installed at the bottom of the hollow cavity. The temperature sensor is used to detect the temperature of the purified flue gas after it has been heated inside the hollow cavity. A solenoid valve is installed on the gas guide pipe. A controller is installed in the middle of the mixing shell. The water pump, temperature sensor, and solenoid valve are all electrically connected to the controller.

[0009] Preferably, it also includes a heat insulation shell, and the outer sides of the first cylindrical cavity, the second cylindrical cavity, the third cylindrical cavity and the fourth cylindrical cavity are all covered with heat insulation shells to prevent heat loss.

[0010] Preferably, it also includes a support plate, with the support plate connected to the right side of the base. The support plate is located on the left side of the mixing shell, and the support plate is connected to the first curved conduit, the second curved conduit, the third curved conduit and the fourth curved conduit in sequence from bottom to top.

[0011] Preferably, the first air concave tube, the second air concave tube, the third air concave tube, and the fourth air concave tube are all dual-channel tube shapes.

[0012] Preferably, it also includes tracheal valves, with tracheal valves installed on the first, second, third, and fourth curved ducts.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This invention uses multiple cylindrical cavities to heat flue gas in layers and stages. A mixing device mixes flue gas heated to different temperatures. Simultaneously, the flue gas flow rate in each conduit can be adjusted via gas pipe valves to regulate the temperature of the flue gas to be emitted, ensuring that the purified gas is emitted at a stable temperature of 80°C. Reheating the flue gas can reduce the relative moisture content of the white smoke. During the process of changing the white smoke state point from A to E and then from state point E to ambient air state point C, the white smoke will not become saturated, thus avoiding the formation of white smoke.

[0015] 2. This invention achieves the function of testing the temperature of the outflowing flue gas by installing a temperature sensor on the mixing shell, so as to facilitate subsequent temperature adjustment.

[0016] 3. The heating and cooling devices are designed to automatically adjust the temperature of the reheated flue gas, ensuring the stability of the reheated flue gas temperature. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the fourth cylindrical cavity and the heat insulation shell and other components of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the support plate and the first cylindrical cavity, etc., of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the first air concave tube and the first cylindrical cavity of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the unpurified trachea and the third cylindrical cavity of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the mixing shell and the gas pipe valve of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the mixing device of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the hybrid shell and temperature sensor of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the heating device and the unpurified gas pipe of the present invention.

[0026] Figure 10 This is a schematic diagram of the first three-dimensional structure of the cooling device of the present invention.

[0027] Figure 11 This is a schematic diagram of a second three-dimensional structure of the heating device of the present invention.

[0028] The labels in the attached diagram are as follows: 1-base, 2-inlet pipe, 3-purification rod, 4-unpurified air pipe, 401-first air bend, 402-second air bend, 403-third air bend, 404-fourth air bend, 501-first cylindrical cavity, 502-second cylindrical cavity, 503-third cylindrical cavity, 504-fourth cylindrical cavity, 6-air pipe valve, 701-first bend guide tube, 702-second bend guide tube, 703-third bend guide tube, 704- Fourth conduit, 8-mixing device, 801-mixing shell, 802-motor, 803-spiral shaft, 804-thermometer, 9-heating device, 901-hollow cavity, 902-temperature sensor, 903-air guide pipe, 904-solenoid valve, 905-controller, 10-cooling device, 1001-water tank, 1002-water pump, 1003-cooling jacket, 1004-hose, 1005-water pipe, 11-insulation shell, 12-support plate. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] A flue gas reheating device after wet flue gas purification, such as Figures 1-5As shown, the device includes a base 1, an air inlet pipe 2, a purification rod 3, an unpurified air pipe 4, a first air concave pipe 401, a second air concave pipe 402, a third air concave pipe 403, a fourth air concave pipe 404, a first cylindrical cavity 501, a second cylindrical cavity 502, a third cylindrical cavity 503, a fourth cylindrical cavity 504, a first curved guide tube 701, a second curved guide tube 702, a third curved guide tube 703, a fourth curved guide tube 704, a mixing device 8, a heating device 9, and a cooling device 10. The first cylindrical cavity 501, the second cylindrical cavity 502, the third cylindrical cavity 503, and the fourth cylindrical cavity 504 are fixedly installed sequentially from bottom to top on the upper end of the base 1. The unpurified air pipe 4 is sleeved inside the first cylindrical cavity 501, and the top of the unpurified air pipe 4 passes through... Unpurified gas pipe 4 is spirally coiled around the inner walls of the first cylindrical cavity 501, the second cylindrical cavity 502, the third cylindrical cavity 503, and the fourth cylindrical cavity 504. The lower end of the unpurified gas pipe 4 penetrates the bottom front end of the first cylindrical cavity 501, and the upper end of the unpurified gas pipe 4 penetrates the top front end of the fourth cylindrical cavity 504. The unpurified gas pipe 4 is used to allow unpurified high-temperature flue gas to circulate. The inner sides of the first cylindrical cavity 501, the second cylindrical cavity 502, the third cylindrical cavity 503, and the fourth cylindrical cavity 504 are respectively equipped with a first air bend pipe 401, a second air bend pipe 402, a third air bend pipe 403, and a fourth air bend pipe 404. The first air-curved pipe 401, the second air-curved pipe 402, the third air-curved pipe 403, and the fourth air-curved pipe 404 are all dual-channel pipes, which can increase the flow rate of purified flue gas. The left ends of the first air-curved pipe 401, the second air-curved pipe 402, the third air-curved pipe 403, and the fourth air-curved pipe 404 are all connected and communicated with the purification rod 3. An air inlet pipe 2 is fixedly installed on the left end of the purification rod 3. The air inlet pipe 2 is used to introduce low-temperature purified flue gas into the purification rod 3. The purification rod 3 is used to allow the low-temperature purified flue gas to enter the first air-curved pipe 401, the second air-curved pipe 402, the third air-curved pipe 403, and the fourth air-curved pipe 404 simultaneously. A mixing device 8 is installed on the top right end of the base 1. The first curved guide pipe 701 and the second curved guide pipe 704 are installed sequentially from bottom to top on the left side of the mixing device 8. 702, the third curved duct 703 and the fourth curved duct 704, the right ends of the first curved duct 401, the second curved duct 402, the third curved duct 403 and the fourth curved duct 404 are respectively connected to the first curved duct 701, the second curved duct 702, the third curved duct 703 and the fourth curved duct 704. The first curved duct 701, the second curved duct 702, the third curved duct 703 and the fourth curved duct 704 are used to introduce the purified flue gas into the mixing device 8. The mixing device 8 is used to mix purified flue gas of various temperatures. The mixing device 8 is connected to a heating device 9, which is used to heat the purified flue gas with an excessively low temperature. The upper end of the mixing device 8 is connected to a cooling device 10, which is used to cool the purified flue gas with an excessively high temperature.

[0032] When reheating is needed using the heat from unpurified flue gas, the unpurified flue gas is first introduced into the unpurified gas pipe 4. The temperature of the unpurified gas pipe 4 itself will rise due to the high temperature of the unpurified flue gas. Then, purified flue gas is introduced into the purification rod 3 from the inlet pipe 2. At this time, the purified flue gas will simultaneously enter the first curved gas pipe 401, the second curved gas pipe 402, the third curved gas pipe 403, and the fourth curved gas pipe 404. Since the unpurified gas pipe 4 is spiral-shaped, the first curved gas pipe 401 will be heated first in the first cylindrical cavity 501. Then, the second curved gas pipe 402, the third curved gas pipe 403, and the fourth curved gas pipe 404 will be heated sequentially by the unpurified gas pipe 4. After heating is completed, the purified flue gas... The gas will reach the mixing device 8 through the first conduit 701, the second conduit 702, the third conduit 703, and the fourth conduit 704. The mixing device 8 performs temperature fusion on the purified gas at different temperatures. When the temperature of the purified gas after mixing exceeds 80°C, the cooling device 10 will cool the purified gas. When the temperature of the purified gas after cooling is below 80°C, the heating device 9 will heat the purified gas. The purified gas is emitted at a stable temperature of 80°C. The reheating of the flue gas can reduce the relative moisture content of the white smoke. The white smoke will not become saturated during the process of changing the state point of the white smoke from A to E and changing the state point of the white smoke from E to the ambient air state point C, and therefore will not form white smoke.

[0033] Example 2

[0034] Based on Example 1, such as Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the mixing device 8 includes a mixing shell 801, a motor 802, a screw shaft 803, and a thermometer 804. The mixing shell 801 is installed on the top right side of the base 1. The motor 802 is installed on the bottom inner side of the mixing shell 801. The screw shaft 803 is installed on the output shaft of the motor 802. The screw shaft 803 is used to stir and mix the flue gas to make the flue gas temperature uniform. The thermometer 804 is installed on the top right side of the mixing shell 801. The thermometer 804 is used to detect the temperature of the flue gas flowing out of the mixing shell 801 and display it through an analog gauge.

[0035] When it is necessary to mix the heated purified flue gas, the purified flue gas in the first gas concave pipe 401, the second gas concave pipe 402, the third gas concave pipe 403 and the fourth gas concave pipe 404 enters the mixing shell 801. The motor 802 is turned on to drive the spiral shaft 803 to rotate, which will mix the purified flue gas at different temperatures. After the mixing is completed, the temperature sensor 804 will measure the temperature of the purified flue gas.

[0036] like Figure 1 and Figure 10As shown, the cooling device 10 includes a water tank 1001, a water pump 1002, a cooling sleeve 1003, a hose 1004, and a water pipe 1005. The water tank 1001 is installed on the top of the mixing shell 801. The cooling sleeve 1003 is sleeved on the outer side of the upper part of the mixing shell 801. The cooling sleeve 1003 is used to cool the flue gas with excessively high discharge temperature. The hose 1004 is connected to the lower right side of the water tank 1001. The water pump is installed on the left side of the top of the cooling sleeve 1003. The inlet end of the water pump 1002 is connected to the hose 1004. The outlet end of the water pump 1002 is connected to the cooling sleeve 1003 through a pipe. The water pipe 1005 is installed on the left side of the cooling sleeve 1003. The top of the water pipe 1005 is connected to the water tank 1001. The water pipe 1005 is used to return the water that has passed through the cooling sleeve 1003 to the water tank 1001 through the water pump 1002.

[0037] When it is necessary to cool down the mixed purified gas, first turn on the water pump 1002. Clean water will flow out of the water tank 1001, through the water pipe 1005, and into the cooling sleeve 1003. At this time, under the action of the water pump 1002, the clean water will flow from the cooling sleeve 1003 back to the water pump 1002, through the hose 1004, and back into the water tank 1001. During the circulation of the clean water, the heat of the mixed purified flue gas will be carried away to achieve the cooling effect.

[0038] like Figure 1 , Figure 9 and Figure 11 As shown, the heating device 9 includes a hollow cavity 901, a temperature sensor 902, a gas guide pipe 903, a solenoid valve 904, and a controller 905. The right outlet of the mixing shell 801 is connected to the hollow cavity 901. The bottom of the hollow cavity 901 is connected to the gas guide pipe 903. The left end of the gas guide pipe 903 is connected to and communicates with the unpurified gas pipe 4. The gas guide pipe 903 is used to introduce high-temperature unpurified flue gas into the hollow cavity 901. The temperature sensor 902 is installed at the bottom right end of the hollow cavity 901. The temperature sensor 902 is used to detect the temperature of the purified flue gas after it has been heated inside the hollow cavity 901. The solenoid valve 904 is installed on the gas guide pipe 903. The controller 905 is installed in the middle of the mixing shell 801. The water pump 1002, the temperature sensor 902, and the solenoid valve 904 are all electrically connected to the controller 905.

[0039] When the mixed flue gas requires heating, the purified flue gas passes through the right side of the mixing shell 801 into the hollow cavity 901. At this time, the temperature sensor 902 detects the flue gas temperature. When the temperature is lower than a preset value, the temperature sensor 902 sends a signal to the controller, which then controls the solenoid valve 904 to open. Unpurified hot flue gas then passes through the air guide pipe 903 into the hollow cavity 901, where the temperature rises, causing the unpurified flue gas passing through to heat up. When the temperature sensor 902 detects that the flue gas temperature is higher than the preset value, it sends a signal to the controller, which then controls the water pump 1002 to start. Clean water circulates and removes the heat from the mixed purified flue gas, achieving automatic cooling and automatic heating.

[0040] like Figure 1 , Figure 2 and Figure 4 As shown, it also includes a heat insulation shell 11. The first cylindrical cavity 501, the second cylindrical cavity 502, the third cylindrical cavity 503 and the fourth cylindrical cavity 504 are all covered with heat insulation shells 11. The heat insulation shell 11 is made of double-layer heat insulation material and is used to prevent heat loss.

[0041] The heat insulation shell 11 can prevent the rapid loss of heat from the first cylindrical cavity 501, the second cylindrical cavity 502, the third cylindrical cavity 503 and the fourth cylindrical cavity 504, thus saving energy and protecting the environment.

[0042] like Figure 3 As shown, it also includes a support plate 12. The support plate 12 is connected to the right side of the base 1, and the support plate 12 is installed on the left side of the mixing shell 801. The support plate 12 is connected to the first curved conduit 701, the second curved conduit 702, the third curved conduit 703 and the fourth curved conduit 704 from bottom to top.

[0043] The support plate 12 can support the first curved conduit 701, the second curved conduit 702, the third curved conduit 703 and the fourth curved conduit 704.

[0044] like Figure 1 and Figure 6 As shown, it also includes a tracheal valve 6. The first curved duct 701, the second curved duct 702, the third curved duct 703 and the fourth curved duct 704 are all equipped with tracheal valves 6.

[0045] When it is necessary to control the mixing of purified flue gas at different temperatures, the opening of the gas pipe valves 6 installed at the upper ends of the first curved duct 701, the second curved duct 702, the third curved duct 703 and the fourth curved duct 704 can be controlled respectively, so that the temperature entering the mixing shell 801 can be coarsely adjusted.

[0046] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A flue gas reheating device after wet flue gas cleaning, characterized in that, The utility model provides a kind of gas purification device, including base (1), air inlet pipe (2), purification rod (3), unclean gas pipe (4), first gas elbow (401), second gas elbow (402), third gas elbow (403), fourth gas elbow (404), first cylindrical cavity (501), second cylindrical cavity (502), third cylindrical cavity (503), fourth cylindrical cavity (504), first curved conduit (701), second curved conduit (702), third curved conduit (703), fourth curved conduit (704), mixing device (8), heating device (9) and cooling device (10), base (1) upper end is sequentially installed with first cylindrical cavity (501), second cylindrical cavity (502), third cylindrical cavity (503) and fourth cylindrical cavity (504) from bottom to top, unclean gas pipe (4) is sleeved in first cylindrical cavity (501) inside, unclean gas pipe (4) top is sequentially penetrated first cylindrical cavity (501), second cylindrical cavity (502), third cylindrical cavity (503) and fourth cylindrical cavity (504), unclean gas pipe (4) lower end penetrates first cylindrical cavity (501) bottom front end, unclean gas pipe (4) upper end penetrates fourth cylindrical cavity (504) top front end, unclean gas pipe (4) is used to make unclean high-temperature flue gas flow, first cylindrical cavity (501), second cylindrical cavity (502), third cylindrical cavity (503) and fourth cylindrical cavity (504) inside are installed with first gas elbow (401), second gas elbow (402), third gas elbow (403) and fourth gas elbow (404) respectively, first gas elbow (401), second gas elbow (402), third gas elbow (403) and fourth gas elbow (404) left end are connected with purification rod (3), purification rod (3) left end is installed with air inlet pipe (2), purification rod (3) is used to make low-temperature purification flue gas enter into first gas elbow (401), second gas elbow (402), third gas elbow (403) and fourth gas elbow (404) simultaneously, base (1) right side is installed with mixing device (8), mixing device (8) left side is sequentially installed with first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) from bottom to top, first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) are connected with first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) right end respectively, first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) are used to guide purification flue gas into mixing device (8), mixing device (8) is used to mix the purification flue gas of multiple temperatures, mixing device (8) is connected with heating device (9) on top, heating device (9) is used to heat the purification flue gas of temperature too low, mixing device (8) upper end is connected with cooling device (10),The cooling device (10) is used for cooling the purified flue gas with excessively high temperature.

2. A flue gas reheating device after wet flue gas cleaning according to claim 1, characterized in that, The mixing device (8) comprises a mixing shell (801), a motor (802), a spiral shaft (803) and a temperature detector (804), the mixing shell (801) is installed at the top of the right side of the base (1), the motor (802) is installed at the bottom of the mixing shell (801), the output shaft of the motor (802) is provided with the spiral shaft (803), the spiral shaft (803) is used for stirring the mixed flue gas, the temperature detector (804) is installed at the top of the right side of the mixing shell (801), and the temperature detector (804) is used for detecting the temperature of the flue gas flowing out of the mixing shell (801).

3. A flue gas reheating device after wet flue gas cleaning according to claim 2, characterized in that The cooling device (10) comprises a water tank (1001), a water pump (1002), a cooling sleeve (1003), a hose (1004) and a water pipe (1005), the water tank (1001) is installed at the top of the mixing shell (801), the cooling sleeve (1003) is sleeved outside the upper part of the mixing shell (801), the cooling sleeve (1003) is used for cooling the flue gas with too high temperature, the hose (1004) is connected to the lower right side of the water tank (1001), the water pump (1002) is installed on the cooling sleeve (1003), the water inlet end of the water pump (1002) is connected with the hose (1004), the water outlet end of the water pump (1002) is connected with the cooling sleeve (1003) through a pipeline, and the water pipe (1005) is installed on the left side of the cooling sleeve (1003), the water pipe (1005) is connected with the water tank (1001) at the top, and the water pipe (1005) is used for flowing the water passing through the cooling sleeve (1003) back to the water tank (1001) through the water pump (1002).

4. A flue gas reheating device after wet flue gas cleaning according to claim 3, characterized in that The heating device (9) comprises a hollow cavity (901), a temperature sensor (902), a gas guide pipe (903), an electromagnetic valve (904) and a controller (905), the hollow cavity (901) is connected to the right end of the mixing shell (801), the gas guide pipe (903) is connected to the bottom of the hollow cavity (901), the left end of the gas guide pipe (903) is connected with the uncleaned gas pipe (4), the gas guide pipe (903) is used for guiding the high-temperature uncleaned flue gas into the hollow cavity (901), the temperature sensor (902) is installed at the bottom of the hollow cavity (901), the temperature sensor (902) is used for detecting the temperature of the cleaned flue gas after being heated inside the hollow cavity (901), the electromagnetic valve (904) is installed on the gas guide pipe (903), the controller (905) is installed in the middle of the mixing shell (801), and the water pump (1002), the temperature sensor (902) and the electromagnetic valve (904) are electrically connected with the controller (905).

5. A flue gas reheating device after wet flue gas cleaning according to claim 1, characterized in that, The heat preservation shell (11) is sleeved outside the first cylindrical cavity (501), the second cylindrical cavity (502), the third cylindrical cavity (503) and the fourth cylindrical cavity (504), and the heat preservation shell (11) is used for preventing heat loss.

6. A flue gas reheating device after wet flue gas cleaning according to claim 2, characterized in that, Supporting plate (12) is further included, the base (1) right side is connected with supporting plate (12), supporting plate (12) is located in the mixing shell (801) left side, supporting plate (12) is sequentially connected with first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) from bottom to top.

7. A flue gas reheating device after wet flue gas cleaning according to claim 1, characterized in that, First gas curved pipe (401), second gas curved pipe (402), third gas curved pipe (403) and fourth gas curved pipe (404) are all double-channel pipe shapes.

8. A flue gas reheating device after wet flue gas cleaning according to claim 1, characterized in that, Gas pipe valve (6) is further included, and the first curved conduit (701), second curved conduit (702), third curved conduit (703) and fourth curved conduit (704) are all installed with gas pipe valve (6).

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