Energy-saving and emission-reducing device for power plant

Abstract

The invention relates to the technical field of waste gas treatment, and particularly discloses an energy-saving and emission-reducing device for a power plant, the energy-saving and emission-reducing device for the power plant comprises an emission-reducing box body, the emission-reducing box body is composed of an upper detachable box body and a lower detachable box body, and a waste gas inlet is fixedly formed in the left side of the lower box body. The heat in the waste gas can be replaced through the replacement barrel at the top of the fixed partition plate, waste heat recycling is achieved, and the purposes of energy conservation and emission reduction are achieved; the purification barrel is used for purifying waste gas and reducing pollutant emission, the waste gas filter screen in the mounting frame can effectively filter solid particles in the waste gas and protect follow-up equipment, the exhaust pipe guides out the purified waste gas, the top end of the exhaust pipe is rotationally and hermetically connected with the gas guide pipe and is matched with the exhaust pump, and it is ensured that the waste gas is smoothly exhausted; meanwhile, the exhaust direction can be flexibly adjusted through the rotary connection design; through cooperative work of multiple components, efficient filtration, heat replacement, purification and emission treatment of waste gas of the power plant are achieved, and the good energy-saving and emission-reducing effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and specifically refers to an energy-saving and emission-reduction device for power plants. Background Art

[0002] In today's society, with the continuous enhancement of environmental protection awareness and the increasingly severe energy crisis, power plants, as key areas of energy consumption and pollutant emissions, their energy-saving and emission-reduction work is particularly important.

[0003] Traditional waste gas treatment methods in power plants have many drawbacks. On the one hand, the waste gas contains a large amount of solid particles, harmful gases, and waste heat. If directly discharged, it will not only cause serious pollution to the atmospheric environment, such as environmental problems like smog and acid rain, but also result in a large amount of energy waste. On the other hand, traditional treatment equipment is inefficient in filtering, purifying, and heat recovery, and cannot meet the increasingly strict environmental protection standards and energy utilization requirements.

[0004] The energy-saving and emission-reduction devices currently used in power plants have a simple filtering structure and cannot effectively remove fine particles in the waste gas, resulting in subsequent treatment equipment being easily blocked and worn, affecting the normal operation and service life of the equipment. In terms of heat recovery, many devices use inefficient heat exchange technologies and cannot fully utilize the waste heat in the waste gas, with a low energy recovery utilization rate. Moreover, for the purification treatment of pollutants in the waste gas, the purification effect of some devices is limited, and it is difficult to achieve deep removal of multiple pollutants. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides an energy-saving and emission-reduction device for power plants to solve the above-mentioned technical defects.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An energy-saving and emission-reduction device for power plants includes an emission reduction box body, which is composed of two detachable box bodies up and down. An exhaust gas inlet is fixedly arranged on the left side of the lower box body. A fixed partition is fixedly arranged at the lower part inside the emission reduction box body, and an aggregate chamber is formed between the bottom of the fixed partition and the lower part inside the emission reduction box body. A replacement cylinder is fixedly arranged on the top of the fixed partition, and a purification cylinder is arranged inside the replacement cylinder. An installation frame is fixedly arranged inside the fixed partition, and an exhaust gas filter is fixedly arranged inside the installation frame. An exhaust pipe is fixedly arranged inside the purification cylinder, and the top end of the exhaust pipe extends to the top of the emission reduction box body. The top end of the exhaust pipe is rotationally and sealingly connected to a guide pipe. An exhaust pump is also fixedly arranged above the back of the emission reduction box body, and the intake end of the exhaust pump is fixedly connected to one end of the guide pipe.

[0007] Furthermore, a movable scraper is slidably arranged at the bottom of the inner wall of the aggregate chamber, and two slide bars are fixedly arranged on the right side of the movable scraper. The right ends of the two slide bars both extend to the outside of the emission reduction box body, and a sealing block is further arranged below the right side of the emission reduction box body.

[0008] Furthermore, a rotating rod is fixedly arranged at the bottom of the purification cylinder body, and the bottom end of the rotating rod extends to the bottom of the waste gas filter screen. A scraping frame is fixedly arranged at the bottom end of the rotating rod, a slag discharging frame is fixedly arranged inside the scraping frame, and a rotating frame is rotatably arranged inside the scraping frame. The surface of the rotating frame is in sliding contact with the surface of the slag discharging frame, and a slag discharging groove is arranged on one side of the slag discharging frame. A slag discharging annular groove is arranged inside the fixed partition plate. A slag discharging pipe is further fixedly arranged below the right side of the emission reduction box body, and the inside of the slag discharging annular groove communicates with the inside of the slag discharging groove and the slag discharging pipe respectively.

[0009] Furthermore, a first transmission gear and a second transmission gear are respectively rotatably arranged on one side inside the scraping frame, and the tooth surfaces of the first transmission gear and the second transmission gear are meshed and transmitted. A transmission tooth groove is arranged at the bottom of the mounting frame, and the tooth surface of the second transmission gear is meshed and transmitted with the inside of the transmission tooth groove. One end of the rotating frame is fixedly connected to the inside of the first transmission gear.

[0010] Furthermore, a spiral microchannel heat exchanger is fixedly arranged inside the replacement cylinder body, and a spiral heat exchange channel is formed between the spiral microchannel heat exchanger and the inside of the replacement cylinder body. The bottom of the spiral microchannel heat exchanger communicates with the upper part of the waste gas filter screen. A plurality of microchannels are arranged inside the spiral microchannel heat exchanger, a replacement air inlet pipe is fixedly arranged at the top of the microchannel, and a replacement air outlet pipe is fixedly arranged at the bottom of the microchannel.

[0011] Furthermore, a box body cover plate is fixedly arranged at the top of the replacement cylinder body, and a plurality of air guiding channels are arranged inside the box body cover plate. The inside of the air guiding channels communicates with the spiral heat exchange channel and the inside of the purification cylinder body respectively.

[0012] Furthermore, adsorption frames are fixedly arranged on the four circumferences inside the purification cylinder body, and adsorbents are filled inside the four adsorption frames. Two movable baffles are slidably arranged on the front and rear sides of the four adsorption frames inside the purification cylinder body. The bottom end of the exhaust pipe is fixedly connected to the bottom of the inner wall of the purification cylinder body, and air guiding through grooves are arranged on the four circumferences inside the exhaust pipe.

[0013] Furthermore, a blowing rack is fixedly arranged at the lower part inside the emission reduction box body, and the top of the blowing rack is rotatably connected to the bottom of the purification cylinder body. The bottoms of the four adsorption racks are all communicated with the inside of the blowing rack through blowing channels. An exhaust rack is also fixedly arranged at the bottom of the purification cylinder body, and the bottom of the exhaust rack is communicated with the tops of the four adsorption racks through blowing channels respectively. A material extraction rack is rotatably arranged at the top of the exhaust rack, and the top of the material extraction rack extends to the top of the emission reduction box body. A material extraction pipe is fixedly arranged on one side of the top of the material extraction rack, and a feeding pipe is communicated with the inside of the material extraction pipe.

[0014] Furthermore, a rotating air supply ring is arranged on the top of the emission reduction box body and on the surface of the exhaust pipe, and circulating air supply pipes are fixedly arranged on both sides of the rotating air supply ring. The bottom ends of the two circulating air supply pipes are respectively communicated with both sides inside the blowing rack.

[0015] Furthermore, a driven gear and a driving gear are respectively rotatably arranged on the top of the emission reduction box body, and the tooth surfaces of the driving gear and the driven gear are meshed and driven. The inside of the driven gear is fixedly connected to the top surface of the exhaust pipe. A servo motor is fixedly arranged on one side of the top of the emission reduction box body, and one end of the output shaft of the servo motor is fixedly connected to the inside of the driving gear.

[0016] The beneficial effects achieved by the present invention adopting the above structure are as follows: 1. In the present invention, the emission reduction box body is designed as two detachable box bodies up and down, which is convenient for the installation, maintenance and overhaul of internal components. The waste gas inlet is arranged on the left side of the lower box body, which is convenient for introducing waste gas. The fixed partition divides the inside of the emission reduction box body, and its bottom forms an aggregate chamber with the lower part of the box body, which can collect impurities such as solid particles in the waste gas. The combination of the movable scraper and the sliding rod can easily clean and discharge the impurities in the aggregate chamber to ensure the normal operation of the equipment. The replacement cylinder body on the top of the fixed partition can replace the heat in the waste gas to realize the recovery and utilization of waste heat and achieve the purpose of energy conservation and emission reduction. The purification cylinder body is used to purify the waste gas and reduce pollutant emissions. The waste gas filter screen in the installation rack can effectively filter solid particles in the waste gas and protect the subsequent equipment. The exhaust pipe leads out the purified waste gas, and its top end is rotatably and hermetically connected to the guide pipe, which cooperates with the exhaust pump to ensure the smooth discharge of the waste gas. At the same time, the rotatable connection design can flexibly adjust the exhaust direction. Through the collaborative work of multiple components, the efficient filtration, heat replacement, purification and emission treatment of the power plant waste gas are realized, and good energy conservation and emission reduction effects are achieved.

[0017] 2. In the present invention, the rotating rod at the bottom of the purification cylinder body is connected to the scraping rack. When the purification cylinder body drives the rotating rod to rotate, the scraping rack can rotate at the bottom of the waste gas filter, effectively scraping the solid particles attached to the bottom of the waste gas filter, preventing the filter from being blocked, ensuring the continuous and efficient waste gas filtration, and thus maintaining the stable operation of the device. The rotating frame and the slag discharge rack arranged in the scraping rack, with the meshing transmission of the first transmission gear, the second transmission gear and the transmission tooth groove, enable the rotating frame to rotate synchronously, sending the scraped solid particles into the slag discharge groove of the slag discharge rack. The slag discharge groove is connected to the slag discharge annular groove and the slag discharge pipe in the fixed partition board, and the solid particles can be smoothly discharged from the device, realizing the effective cleaning of the filtered impurities. Through this pre-filtering and cleaning mechanism for solid particles in the waste gas, it is possible to prevent solid particles from entering the subsequent heat exchange process, reduce the interference with the heat exchange effect, improve the efficiency and quality of heat exchange, and then significantly enhance the energy conservation and emission reduction effect of the entire device on power plant waste gas, making the device more efficient and environmentally friendly in waste gas treatment and energy utilization.

[0018] 3. In the present invention, through the design of the spiral microchannel heat exchanger and the spiral heat exchange channel in the replacement cylinder body, the waste gas filtered by solid particles flows spirally in the spiral heat exchange channel, can fully contact with the spiral microchannel heat exchanger, and the replacement gas sent through the replacement air inlet pipe continuously exchanges heat with the waste gas in the microchannel, greatly improving the heat recovery efficiency, realizing the efficient utilization of the waste gas heat, and achieving the purpose of energy conservation. The box cover plate at the top of the replacement cylinder body, whose air guiding channel communicates with the spiral heat exchange channel and the purification cylinder body, ensures that the waste gas smoothly enters the purification link after heat exchange. The adsorption racks filled with adsorbents around the inner part of the purification cylinder body can effectively adsorb the pollutants in the waste gas, deeply purify the waste gas, and reduce pollutant emissions. The four movable baffles on the front and rear sides are driven by micro electric cylinders, and can flexibly adjust the purification space and air flow distribution, enhancing the purification effect. The air guiding through groove in the exhaust pipe facilitates the purified waste gas to enter the exhaust pipe and then be discharged through the air guiding pipe and the exhaust pump. With the design of the closely coordinated structure, from heat exchange to waste gas purification and then to discharge, the energy conservation and emission reduction ability of the device for power plant waste gas is comprehensively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the structure of an energy conservation and emission reduction device for a power plant according to an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the emission reduction box body and the replacement cylinder body according to an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the waste gas filter and the fixed partition board according to an embodiment of the present invention; Figure 4Schematic diagram of the mounting rack and waste gas filter structure according to an embodiment of the present invention; Figure 5 Schematic diagram of the replacement cylinder and fixed partition structure according to an embodiment of the present invention; Figure 6 Schematic diagram of the spiral microchannel heat exchanger and spiral heat exchange channel structure according to an embodiment of the present invention; Figure 7 Schematic diagram of the replacement cylinder and purification cylinder structure according to an embodiment of the present invention; Figure 8 Schematic diagram of the purification cylinder and adsorption rack structure according to an embodiment of the present invention.

[0020] In the figure, 1. emission reduction box body; 2. waste gas inlet; 3. fixed partition; 4. aggregate cavity; 5. movable scraper; 6. sliding rod; 7. replacement cylinder; 8. purification cylinder; 9. exhaust pipe; 10. air guide pipe; 11. exhaust pump; 12. mounting rack; 13. waste gas filter; 14. rotating rod; 15. scraping rack; 16. rotating rack; 17. slag discharge rack; 18. slag discharge groove; 19. slag discharge pipe; 20. spiral microchannel heat exchanger; 21. spiral heat exchange channel; 22. replacement inlet pipe; 23. replacement outlet pipe; 24. adsorption rack; 25. movable baffle; 26. air guide through groove; 27. blowing rack; 28. exhaust rack; 29. pumping rack; 30. pumping pipe; 31. feeding pipe; 32. driven gear; 33. driving gear; 34. servo motor; 35. circulating air supply pipe; 36. transmission tooth groove; 37. transmission gear one; 38. transmission gear two; 39. rotating air supply ring; 40. box body cover plate. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying 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 therefore should not be construed as a limitation to the present invention.

[0023] Embodiment 1:

[0024] Please refer to Figures 1 to 8As shown in the figure, an energy-saving and emission-reduction device for a power plant includes: an emission-reduction box body 1, which is composed of two detachable box bodies up and down, and an exhaust gas inlet 2 is fixedly arranged on the left side of the lower box body. A fixed partition 3 is fixedly arranged below the interior of the emission-reduction box body 1, and an aggregate cavity 4 is formed between the bottom of the fixed partition 3 and the lower part of the interior of the emission-reduction box body 1. A movable scraper 5 is slidably arranged on the bottom of the inner wall of the aggregate cavity 4, and two slide bars 6 are fixedly arranged on the right side of the movable scraper 5. The right ends of the two slide bars 6 both extend to the outside of the emission-reduction box body 1, and a sealing block is also arranged below the right side of the emission-reduction box body 1. Furthermore, a replacement cylinder body 7 is fixedly arranged on the top of the fixed partition 3, and a purification cylinder body 8 is arranged inside the replacement cylinder body 7. An installation frame 12 is fixedly arranged inside the fixed partition 3, and an exhaust gas filter screen 13 is fixedly arranged inside the installation frame 12. An exhaust pipe 9 is fixedly arranged inside the purification cylinder body 8, and the top end of the exhaust pipe 9 extends to the top of the emission-reduction box body 1. The top end of the exhaust pipe 9 is rotationally and sealingly connected to a guide pipe 10. An exhaust pump 11 is also fixedly arranged above the back of the emission-reduction box body 1, and the intake end of the exhaust pump 11 is fixedly connected to one end of the guide pipe 10.

[0025] It should be noted that when using the energy-saving and emission-reduction device to treat the exhaust gas of the power plant, the exhaust gas is sent into the interior of the emission-reduction box body 1 through the exhaust gas inlet 2. The exhaust gas directly enters the interior of the aggregate cavity 4, and the solid particles in the exhaust gas are filtered by the exhaust gas filter screen 13 inside the installation frame 12. Then, the exhaust gas after the filtration treatment enters the interior of the replacement cylinder body 7, and the heat in the exhaust gas is replaced inside the replacement cylinder body 7. Finally, the exhaust gas is sent into the interior of the purification cylinder body 8 for purification treatment, and then discharged through the exhaust pipe 9, the guide pipe 10, and the exhaust pump 11, realizing the energy-saving and emission-reduction treatment of the exhaust gas in the power plant.

[0026] In a specific embodiment, in the present invention, the emission reduction box body 1 is designed as two detachable box bodies up and down, which is convenient for the installation, maintenance and overhaul of internal components. The waste gas inlet 2 is arranged on the left side of the lower box body to facilitate the introduction of waste gas. The fixed partition 3 divides the interior of the emission reduction box body 1, and its bottom forms an aggregate chamber 4 with the lower part of the box body, which can collect impurities such as solid particles in the waste gas. The combination of the movable scraper 5 and the slide rod 6 can easily clean and discharge the impurities in the aggregate chamber 4 to ensure the normal operation of the equipment. The replacement cylinder body 7 at the top of the fixed partition 3 can replace the heat in the waste gas to realize the recovery and utilization of waste heat and achieve the purpose of energy conservation and emission reduction. The purification cylinder body 8 is used to purify the waste gas and reduce pollutant emissions. The waste gas filter screen 13 in the mounting frame 12 can effectively filter solid particles in the waste gas to protect the subsequent equipment. The exhaust pipe 9 leads out the purified waste gas, and its top end is rotationally and sealingly connected to the guide pipe 10, which cooperates with the exhaust pump 11 to ensure the smooth discharge of the waste gas. At the same time, the rotational connection design can flexibly adjust the exhaust direction. Through the collaborative work of multiple components, the efficient filtration, heat replacement, purification and emission treatment of the power plant waste gas are realized, achieving good energy conservation and emission reduction effects.

[0027] Embodiment 2:

[0028] Specifically, a rotating rod 14 is fixedly arranged at the bottom of the purification cylinder body 8, and the bottom end of the rotating rod 14 extends to the bottom of the waste gas filter screen 13. A scraping frame 15 is fixedly arranged at the bottom end of the rotating rod 14. A rotating frame 17 is fixedly arranged inside the scraping frame 15, and a rotating frame 16 is also rotatably arranged inside the scraping frame 15. The surfaces of the rotating frame 16 and the rotating frame 17 are in sliding contact. A rotating groove 18 is arranged on one side of the rotating frame 17. A slag discharge annular groove is arranged inside the fixed partition 3. A rotating pipe 19 is also fixedly arranged below the right side of the emission reduction box body 1, and the inside of the slag discharge annular groove communicates with the inside of the rotating groove 18 and the rotating pipe 19 respectively. Furthermore, a first transmission gear 37 and a second transmission gear 38 are respectively rotatably arranged on one side inside the scraping frame 15, and the tooth surfaces of the first transmission gear 37 and the second transmission gear 38 are in meshing transmission. A transmission tooth groove 36 is arranged at the bottom of the mounting frame 12, and the tooth surface of the second transmission gear 38 is in meshing transmission with the inside of the transmission tooth groove 36. One end of the rotating frame 16 is also fixedly connected to the inside of the first transmission gear 37.

[0029] It should be noted that when the waste gas filter screen 13 is used to filter solid particles in the waste gas, the solid particles in the waste gas adhere to the bottom of the waste gas filter screen 13. At this time, the purification cylinder body 8 drives the rotating rod 14 to rotate, and the bottom end of the rotating rod 14 drives the scraping frame 15 to rotate at the bottom of the waste gas filter screen 13. The scraping frame 15 is used to scrape off the solid particles adhering to the bottom of the waste gas filter screen 13. And as the tooth surface of the second transmission gear 38 rotates along the transmission tooth groove 36, in cooperation with the meshing transmission between the second transmission gear 38 and the first transmission gear 37, the rotating frame 16 rotates synchronously inside the scraping frame 15. The rotating frame 16 is used to send the solid particles scraped off on one side of the scraping frame 15 into the rotating groove 18 inside the rotating frame 17. The waste gas solid particles entering the inside of the rotating groove 18 then enter the slag discharge annular groove inside the fixed partition plate 3, and finally the scraped waste gas solid particles are discharged through the rotating pipe 19. By pre-filtering the solid particles in the waste gas, the subsequent heat replacement treatment effect of the waste gas is improved, and the energy conservation and emission reduction effect of the power plant waste gas is improved.

[0030] In a specific embodiment, the rotating rod 14 at the bottom of the purification cylinder body 8 in the present invention is connected to the scraping frame 15. When the purification cylinder body 8 drives the rotating rod 14 to rotate, the scraping frame 15 can rotate at the bottom of the waste gas filter screen 13, effectively scraping off the solid particles adhering to the bottom of the waste gas filter screen 13, preventing the filter screen from being blocked, ensuring the continuous and efficient waste gas filtration, and thus maintaining the stable operation of the device; the rotating frame 16 and the rotating frame 17 arranged inside the scraping frame 15, with the help of the meshing transmission of the first transmission gear 37, the second transmission gear 38 and the transmission tooth groove 36, enable the rotating frame 16 to rotate synchronously, sending the scraped solid particles into the rotating groove 18 of the rotating frame 17. The rotating groove 18 is connected to the slag discharge annular groove inside the fixed partition plate 3 and the rotating pipe 19, and the solid particles can be smoothly discharged from the device, realizing the effective cleaning of the filtered impurities. Through this pre-filtering and cleaning mechanism for solid particles in the waste gas, it is possible to prevent solid particles from entering the subsequent heat replacement link, reduce the interference with the heat replacement effect, improve the efficiency and quality of heat replacement, and thus significantly improve the energy conservation and emission reduction effect of the entire device on the power plant waste gas, making the device more efficient and environmentally friendly in waste gas treatment and energy utilization.

[0031] Embodiment 3:

[0032] Specifically, a spiral microchannel heat exchanger 20 is fixedly arranged inside the replacement cylinder body 7, and a spiral heat exchange channel 21 is formed between the spiral microchannel heat exchanger 20 and the inside of the replacement cylinder body 7. The bottom of the spiral microchannel heat exchanger 20 communicates with the upper part of the waste gas filter screen 13. A number of microchannels are arranged inside the spiral microchannel heat exchanger 20, and a replacement intake pipe 22 is fixedly arranged at the top of the microchannel, and a replacement outlet pipe 23 is fixedly arranged at the bottom of the microchannel. One ends of the replacement intake pipe 22 and the replacement outlet pipe 23 both extend to the outside of the emission reduction box body 1. The replacement gas is sent into the inside of the spiral microchannel heat exchanger 20 through the replacement intake pipe 22. In the spiral heat exchange channel 21 inside the replacement cylinder body 7, after the waste gas is filtered by solid particles, it enters the inside of the spiral heat exchange channel 21 for spiral flow. During the flow of the waste gas, it contacts the surface of the spiral microchannel heat exchanger 20, and can continuously heat-exchange the replacement gas in the microchannels inside the spiral microchannel heat exchanger 20 all the time, realizing the efficient utilization of the heat in the waste gas.

[0033] Furthermore, a box body cover plate 40 is fixedly arranged at the top of the replacement cylinder body 7, and a number of air guiding channels are arranged inside the box body cover plate 40. The inside of the air guiding channels communicates with the inside of the spiral heat exchange channel 21 and the purification cylinder body 8 respectively.

[0034] Furthermore, adsorption racks 24 are fixedly arranged on the four circumferences inside the purification cylinder body 8, and adsorbents are filled inside the four adsorption racks 24. Two movable baffles 25 are slidably arranged on the front and back sides of the four adsorption racks 24 inside the purification cylinder body 8. The four movable baffles 25 on the front and back sides are slidably driven by micro electric cylinders; the bottom end of the exhaust pipe 9 is fixedly connected to the bottom of the inner wall of the purification cylinder body 8, and air guiding grooves 26 are arranged on the four circumferences inside the exhaust pipe 9.

[0035] It should be noted that when carrying out the replacement and purification treatment of the heat in the waste gas, first, the heat of the waste gas inside the spiral heat exchange channel 21 is replaced by the spiral microchannel heat exchanger 20, and then it enters the outside of the purification cylinder body 8 through the box body cover plate 40. The adsorption racks 24 arranged on the four circumferences inside the purification cylinder body 8 and the adsorbents filled inside are used to adsorb and purify the waste gas. Finally, the waste gas entering the inside of the purification cylinder body 8 enters the inside of the exhaust pipe 9 through the air guiding grooves 26 and is discharged through the air guiding pipe 10 and the exhaust pump 11.

[0036] In a specific embodiment, in the present invention, through the design of replacing the spiral microchannel heat exchanger 20 and the spiral heat exchange channel 21 in the replacement cylinder body 7, the exhaust gas filtered by solid particles can flow spirally in the spiral heat exchange channel 21 and can be in full contact with the spiral microchannel heat exchanger 20. The replacement gas sent through the replacement air inlet pipe 22 exchanges heat continuously with the exhaust gas in the microchannel, greatly improving the heat recovery efficiency, realizing the efficient utilization of the heat of the exhaust gas, achieving the purpose of energy conservation. The box cover plate 40 at the top of the replacement cylinder body 7 has its air guiding channel communicating with the spiral heat exchange channel 21 and the purification cylinder body 8, ensuring that the exhaust gas smoothly enters the purification link after heat replacement. The adsorption racks 24 filled with adsorbents are arranged around the inside of the purification cylinder body 8, which can effectively adsorb the pollutants in the exhaust gas, deeply purify the exhaust gas, and reduce pollutant emissions. The four movable baffles 25 on the front and rear sides are driven by micro electric cylinders, which can flexibly adjust the purification space and air flow distribution, enhancing the purification effect. The air guiding through groove 26 in the exhaust pipe 9 facilitates the purified exhaust gas to enter the exhaust pipe 9 and then be discharged through the air guiding pipe 10 and the exhaust pump 11. By using the design of closely coordinated structures, from heat replacement to exhaust gas purification and then to discharge, the energy conservation and emission reduction capacity of the device for power plant exhaust gas is comprehensively improved.

[0037] Embodiment 4:

[0038] Specifically, a blowing rack 27 is fixedly arranged below the inside of the emission reduction box body 1, and the top of the blowing rack 27 is rotationally connected to the bottom of the purification cylinder body 8. The bottoms of the four adsorption racks 24 are respectively communicated with the inside of the blowing rack 27 through blowing channels. The bottom of the purification cylinder body 8 is also fixedly provided with an exhaust rack 28, and the bottom of the exhaust rack 28 is respectively communicated with the tops of the four adsorption racks 24 through blowing channels. A material extraction rack 29 is rotatably arranged at the top of the exhaust rack 28, and the top of the material extraction rack 29 extends to the top of the emission reduction box body 1. A material extraction pipe 30 is fixedly arranged on one side of the top of the material extraction rack 29, and a feeding pipe 31 is communicated inside the material extraction pipe 30, and one end of the feeding pipe 31 extends into the incineration equipment; a rotating air supply ring 39 is also arranged at the top of the emission reduction box body 1 and on the surface of the exhaust pipe 9, and circulating air supply pipes 35 are fixedly arranged on both sides of the rotating air supply ring 39. The bottom ends of the two circulating air supply pipes 35 are respectively communicated with both sides inside the blowing rack 27.

[0039] It should be noted that the interior of the rotating air supply ring 39 and the surface of the exhaust pipe 9 are rotatably connected, and the bottom of the rotating air supply ring 39 is fixedly connected to the top of the emission reduction box 1, and an electric heating plate is also arranged inside the rotating air supply ring 39. The exhaust gas after filtration, heat replacement and adsorption purification is sent to the blowing rack 27 through the rotating air supply ring 39 and the circulating air supply pipe 35. The high-heat exhaust gas is used to flush the two sides of the adsorption rack 24, and the adsorption saturated area in the adsorption rack 24 is desorbed and regenerated. The desorbed high-concentration pollutant gas enters the set incineration equipment through the exhaust rack 28, the extraction rack 29, the extraction pipe 30 and the feeding pipe 31 for harmless treatment.

[0040] Specifically, a driven gear 32 and a driving gear 33 are rotatably provided on the top of the emission reduction box 1, and the tooth surfaces of the driving gear 33 and the driven gear 32 are meshed for transmission. The interior of the driven gear 32 is fixedly connected to the top surface of the exhaust pipe 9. A servo motor 34 is also fixedly provided on one side of the top of the emission reduction box 1, and one end of the output shaft of the servo motor 34 is fixedly connected to the interior of the driving gear 33.

[0041] It should be noted that when performing energy-saving and emission-reduction treatment on waste gas, the output shaft of the servo motor 34 is used to control the driving gear 33 to rotate, and the driving gear 33 is used to drive the driven gear 32 to rotate, and the driven gear 32 is used to drive the exhaust pipe 9 to rotate, and finally, the bottom end of the exhaust pipe 9 is used to drive the purification cylinder 8 to rotate inside the replacement cylinder 7, and the rotary purification cylinder 8 is used to adsorb and purify the waste gas, thereby further improving the energy utilization efficiency.

[0042] Embodiment 5:

[0043] See also Figures 1 to 8 Specifically, this embodiment also discloses a working method of an energy-saving and emission-reduction device for a power plant, as follows: Step 1: Introduce the exhaust gas from the power plant into the emission reduction box 1 through the exhaust gas inlet 2, and the exhaust gas directly enters the collecting cavity 4. The exhaust gas filter 13 in the mounting frame 12 filters the solid particles in the exhaust gas. The rotating rod 14 at the bottom of the purification cylinder 8 drives the scraper frame 15 to rotate, and scrapes off the solid particles attached to the bottom of the exhaust gas filter 13. Through the meshing transmission of the transmission gear 1 37, the transmission gear 2 38 and the transmission tooth groove 36, the rotating frame 16 sends the solid particles into the rotating groove 18 of the rotating frame 17, and then discharges them through the slag discharge annular groove and the rotating pipe 19 in the fixed partition plate 3; Step 2: The waste gas after particle filtration enters the spiral heat exchange channel 21 in the displacement cylinder 7, flows in a spiral manner, and the displacement gas is sent into the spiral microchannel heat exchanger 20 through the displacement inlet pipe 22. During the flow process, the waste gas contacts the surface of the spiral microchannel heat exchanger 20, and continuously exchanges heat with the displacement gas in the microchannel, thereby realizing efficient recovery and utilization of waste gas heat; Step 3: The exhaust gas that has completed heat replacement enters the outside of the purification cylinder 8 through the air guide channel of the box cover plate 40. The adsorbent filled in the adsorption racks 24 around the inner circumference of the purification cylinder 8 adsorbs and purifies the exhaust gas. The four movable baffles 25 on the front and rear sides are driven by micro electric cylinders, which can adjust the purification space and air flow distribution to enhance the purification effect. The purified exhaust gas enters the exhaust pipe 9 through the air guide groove 26 in the exhaust pipe 9, and then is discharged through the air guide pipe 10 and the exhaust pump 11; Step 4: During the exhaust process of the exhaust gas, the air supply ring 39 and the circulating air supply pipe 35 are rotated to send the high-calorie exhaust gas that has been filtered, heat-replaced, and adsorption-purified into the blowing rack 27 to wash both sides of the adsorption rack 24 and desorb and regenerate the adsorption-saturated area. The desorbed high-concentration pollutant gas enters the incineration equipment through the exhaust rack 28, the pumping rack 29, the pumping pipe 30, and the feeding pipe 31 for harmless treatment. In addition, the output shaft of the servo motor 34 controls the driving gear 33 to rotate, driving the driven gear 32, so that the exhaust pipe 9 and the purification cylinder 8 rotate in the replacement cylinder 7, and the rotating purification cylinder 8 is used to further improve the exhaust gas adsorption and purification effect and the energy utilization efficiency.

[0044] Example 6:

[0045] Sensor components are installed on both sides of the mounting frame 12 and at the top and bottom of the exhaust gas filter 13. The sensor components include a pressure sensor and a flow rate sensor. The two sensor components respectively collect the pressure and air flow rate data at the top and bottom of the exhaust gas filter 13 and send them to the control panel (not shown in the figure) installed on the emission reduction box 1. The control panel includes a microcontroller and a memory. The memory is used to store the pressure and air flow rate data fed back by the sensor components; the microcontroller retrieves the pressure and air flow rate data stored in the memory and analyzes them. The specific analysis steps are as follows: S01: Calculate the pressure difference ΔP between both sides of the exhaust gas filter 13, and at the same time calculate the flow rate difference ΔV between the air flows on both sides of the exhaust gas filter 13; set a first flow rate difference threshold ΔVth1. If ΔV > ΔVth1, execute step S02; S02: Set a pressure difference threshold ΔPth1. If ΔP < ΔPth1, execute step S03; if ΔP ≥ ΔPth1, execute step S04; S03: The microcontroller generates a yellow warning instruction and feeds it back to the corresponding alarm for warning. At the same time, it generates a manual cleaning prompt label for the exhaust gas filter 13, and then sends it to the smart terminal of the corresponding technician, and obtains the location of the technician. When the location of the technician is within the corresponding range of the energy conservation and emission reduction device, control the energy conservation and emission reduction device to stop working, and the technician cleans it with a soft film brush to avoid the scraping rack 1 being unable to clean the stubborn particles or dirt on the exhaust gas filter 13, affecting the air flow filtration efficiency; S04: The microcontroller generates a red warning instruction and feeds it back to the corresponding alarm for warning. At the same time, it generates a manual replacement prompt label for the exhaust gas filter 13 and then sends it to the smart terminal of the corresponding technician, who will replace the new exhaust gas filter 13.

[0046] The present invention monitors and analyzes the pressure and air flow velocity data at the top and bottom of the exhaust gas filter 13, then generates corresponding warning instructions, and reminds the technician to clean and replace in time to avoid affecting the filtration efficiency of the device.

[0047] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0048] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0049] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0050] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable to those skilled in the art.

Claims

1. An energy-saving and emission-reduction device for power plants, comprising an emission-reduction box body (1), the emission-reduction box body (1) is composed of two detachable box bodies up and down, and an exhaust gas inlet (2) is fixedly arranged on the left side of the lower box body, and it is characterized in that: A fixed partition plate (3) is fixedly arranged below the interior of the emission reduction box body (1), and an aggregate chamber (4) is formed between the bottom of the fixed partition plate (3) and the lower part of the interior of the emission reduction box body (1); A replacement cylinder body (7) is fixedly arranged at the top of the fixed partition plate (3), and a purification cylinder body (8) is arranged inside the replacement cylinder body (7). An installation frame (12) is fixedly arranged inside the fixed partition plate (3), and an exhaust gas filter screen (13) is fixedly arranged inside the installation frame (12). An exhaust pipe (9) is fixedly arranged inside the purification cylinder body (8), and the top end of the exhaust pipe (9) extends to the top of the emission reduction box body (1). The top end of the exhaust pipe (9) is rotationally and sealingly connected with a guide pipe (10). An exhaust pump (11) is also fixedly arranged above the back surface of the emission reduction box body (1), and the air inlet end of the exhaust pump (11) is fixedly connected with one end of the guide pipe (10).

2. The energy-saving and emission-reduction device for a power plant according to claim 1, wherein: A movable scraper (5) is slidably arranged at the bottom of the inner wall of the aggregate chamber (4), and two sliding rods (6) are fixedly arranged on the right side of the movable scraper (5). The right ends of the two sliding rods (6) both extend to the outside of the emission reduction box body (1), and a sealing block is also arranged below the right side of the emission reduction box body (1).

3. An energy-saving and emission-reduction device for a power plant according to claim 1, characterized in that: A rotating rod (14) is fixedly arranged at the bottom of the purification cylinder body (8), and the bottom end of the rotating rod (14) extends to the bottom of the exhaust gas filter screen (13). A scraping frame (15) is fixedly arranged at the bottom end of the rotating rod (14), and a slag discharging frame (17) is fixedly arranged inside the scraping frame (15). A rotating frame (16) is also rotatably arranged inside the scraping frame (15). The surface of the rotating frame (16) is in sliding contact with the surface of the slag discharging frame (17), and a slag discharging groove (18) is arranged on one side of the slag discharging frame (17). A slag discharging annular groove is arranged inside the fixed partition plate (3). A slag discharging pipe (19) is also fixedly arranged below the right side of the emission reduction box body (1), and the inside of the slag discharging annular groove is respectively communicated with the inside of the slag discharging groove (18) and the slag discharging pipe (19).

4. An energy-saving and emission-reduction device for a power plant according to claim 3, characterized in that: A first transmission gear (37) and a second transmission gear (38) are respectively rotatably arranged on one side inside the scraping frame (15), and the tooth surfaces of the first transmission gear (37) and the second transmission gear (38) are meshed and driven. A transmission tooth groove (36) is arranged at the bottom of the installation frame (12), and the tooth surface of the second transmission gear (38) is meshed and driven with the inside of the transmission tooth groove (36). One end of the rotating frame (16) is also fixedly connected with the inside of the first transmission gear (37).

5. An energy-saving and emission-reduction device for a power plant according to claim 1, characterized in that: A spiral microchannel heat exchanger (20) is fixedly arranged inside the replacement cylinder body (7), and a spiral heat exchange channel (21) is formed between the inside of the spiral microchannel heat exchanger (20) and the inside of the replacement cylinder body (7). The bottom of the spiral microchannel heat exchanger (20) is communicated with the upper part of the exhaust gas filter screen (13). A plurality of microchannels are arranged inside the spiral microchannel heat exchanger (20), a replacement air inlet pipe (22) is fixedly arranged at the top of the microchannels, and a replacement air outlet pipe (23) is fixedly arranged at the bottom of the microchannels.

6. The energy-saving and emission-reduction device for a power plant according to claim 5, characterized in that: A box cover plate (40) is fixedly arranged at the top of the replacement cylinder body (7), and a plurality of air guide channels are arranged inside the box cover plate (40). The inner parts of the air guide channels are respectively communicated with the spiral heat exchange channels (21) and the inside of the purification cylinder body (8).

7. An energy-saving and emission-reduction device for a power plant according to claim 1, characterized in that: Adsorption frames (24) are fixedly arranged around the inner part of the purification cylinder body (8), and adsorbents are filled inside the four adsorption frames (24). Two movable baffles (25) are slidably arranged on the front and rear sides of the four adsorption frames (24) inside the purification cylinder body (8). The bottom end of the exhaust pipe (9) is fixedly connected with the bottom of the inner wall of the purification cylinder body (8), and air guide grooves (26) are arranged around the inner part of the exhaust pipe (9).

8. An energy-saving and emission-reduction device for a power plant according to claim 7, characterized in that: A blowing frame (27) is fixedly arranged below the inner part of the emission reduction box body (1), and the top of the blowing frame (27) is rotationally connected with the bottom of the purification cylinder body (8). The bottoms of the four adsorption frames (24) are respectively communicated with the inside of the blowing frame (27) through blowing channels. An exhaust frame (28) is also fixedly arranged at the bottom of the purification cylinder body (8), and the bottom of the exhaust frame (28) is respectively communicated with the tops of the four adsorption frames (24) through blowing channels. A material extraction frame (29) is rotationally arranged at the top of the exhaust frame (28), and the top of the material extraction frame (29) extends to the top of the emission reduction box body (1). A material extraction pipe (30) is fixedly arranged on one side of the top of the material extraction frame (29), and a feeding pipe (31) is communicated with the inside of the material extraction pipe (30).

9. The energy-saving and emission-reduction device for a power plant according to claim 8, wherein: A rotating air supply ring (39) is also arranged on the top of the emission reduction box body (1) and on the surface of the exhaust pipe (9), and circulating air supply pipes (35) are fixedly arranged on both sides of the rotating air supply ring (39). The bottom ends of the two circulating air supply pipes (35) are respectively communicated with both sides inside the blowing frame (27).

10. An energy conservation and emission reduction device for a power plant according to claim 1, characterized in that: A driven gear (32) and a driving gear (33) are respectively rotationally arranged on the top of the emission reduction box body (1), and the tooth surfaces of the driving gear (33) and the driven gear (32) are meshed and driven. The inside of the driven gear (32) is fixedly connected with the top surface of the top end of the exhaust pipe (9). A servo motor (34) is fixedly arranged on one side of the top of the emission reduction box body (1), and one end of the output shaft of the servo motor (34) is fixedly connected with the inside of the driving gear (33).

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