A device for recycling energy from a furnace

Abstract

The utility model relates to energy system utilization technical field especially a furnace kiln residual energy recycling device, wherein, including the cyclone separation subassembly for carrying out centrifugal separation to the condensate in steam, the filter subassembly to the trace condensate in steam is filtered, steam turbine, generator unit and steam supplement subassembly that increase steam quantity, the high temperature high pressure steam produced by furnace kiln passes through cyclone separation subassembly, filter subassembly, steam turbine and steam supplement subassembly in proper order, the output shaft of steam turbine is connected with the rotary axle of generator unit or with compressor and so on machine, the utility model has realized the reuse power generation of furnace kiln system residual heat residual energy, and the electric energy generated by reuse is used to prepare hydrogen and oxygen, and the hydrogen and oxygen are used to reduce the dosage of natural gas or coal powder, improve the utilization efficiency of furnace kiln fuel, complete the best method of system closed circuit circulation, save the non -renewable energy, have wide application prospect in energy system utilization technical field.

Description

Technical Field

[0001] This utility model relates to the field of energy system utilization technology, and in particular to a device for reusing waste energy in furnaces and kilns. Background Technology

[0002] In industries such as metallurgy, chemical industry, and building materials, which rely on high-temperature furnaces for production, core equipment such as calcining furnaces, sintering machines, and industrial boilers continuously generate a large amount of high-temperature and high-pressure steam with stable parameters during operation (typically with a pressure of 3.82-10.8MPa and a temperature of 450-540℃). This type of steam itself contains huge thermal and pressure energy and is a secondary energy source with great recycling value in industrial production. However, traditional industrial production systems have shortcomings in their handling of high-temperature, high-pressure steam, resulting in consistently low energy efficiency. On one hand, downstream steam-using equipment (such as heat exchangers and dryers) often requires lower steam parameters than the furnaces produce. To meet process requirements, companies typically use desuperheating and pressure-reducing devices to directly process the high-temperature, high-pressure steam. In this process, the steam pressure is directly consumed through the throttling effect of the throttling valve, and a large amount of heat energy is wasted by spraying water into the steam for cooling. Energy that could have been further utilized is not recovered, leading to a serious "energy waste" phenomenon and resource waste. On the other hand, traditional handling methods not only cause direct energy loss but also trigger a series of chain reactions, further increasing production costs and environmental pressures for companies. From an economic cost perspective, to compensate for the wasted energy, companies need to consume more primary energy sources (such as coal and natural gas) to maintain the normal operation of the furnaces, leading to a significant increase in energy procurement costs. Therefore, a device to solve these problems is needed. Utility Model Content

[0003] To address the problem that traditional furnaces such as calcining furnaces, sintering machines, and boilers generate large amounts of high-temperature and high-pressure steam during operation, which is not fully utilized and the energy lost during de-cooling and de-pressure reduction is not recovered, resulting in energy waste, low energy utilization efficiency, and high production costs, a furnace waste energy reuse device has been invented.

[0004] The technical solution of this utility model is a furnace waste energy reuse device, which includes a cyclone separator for centrifugal separation of condensate in steam, a filter assembly for filtering trace amounts of condensate in steam, a steam turbine, a generator set, and a steam replenishment assembly to increase the amount of steam. The high-temperature and high-pressure steam generated by the furnace passes through the cyclone separator, the filter assembly, the steam turbine, and the steam replenishment assembly in sequence. The output shaft of the steam turbine is connected to the rotating shaft of the generator set.

[0005] Preferably, the cyclone separator assembly includes a separator cylinder, the side wall of which is connected to a first air inlet pipe and a first air outlet pipe. The first air inlet pipe is located at the upper end of the side wall of the separator cylinder, and the first air outlet pipe is opposite to it and located at the lower end of the side wall of the separator cylinder. A cylinder cover is connected to the upper opening of the separator cylinder, and a fixing rod is connected to the inner end face of the cylinder cover. A spiral guide vane is connected to the fixing rod. The bottom of the separator cylinder is arc-shaped, and a first drain pipe is connected to the bottom of the separator cylinder. A first valve is connected to the first drain pipe, and a plurality of first support legs are connected to the outer end face of the bottom of the separator cylinder.

[0006] Preferably, the filter assembly includes a filter box, with a cover connected to the opening of the filter box. A first bearing and a second bearing are respectively connected to the inner end faces of the filter box and the cover. A connecting shaft is interference-fitted within the first and second bearings. A drive fan blade and a connecting disc are connected to the connecting shaft. Several connecting rods extend from the connecting disc. A filter plate is connected to the connecting rods and the connecting disc. A filter membrane is provided on the end face of the filter plate near the drive fan blade. A second air inlet pipe is connected to the end face of the filter box away from the cover. A second air outlet pipe is connected to the cover. The second air inlet pipe is connected to a cyclone separator assembly. The second air outlet pipe is connected to the air inlet of a steam turbine. The air outlet of the steam turbine is connected to a steam replenishment assembly. A drain hole is provided at the bottom of the filter box. A second drain pipe connected to the drain hole is connected to the outer bottom of the filter box at the drain hole. A second valve is connected to the second drain pipe. Several second support legs are connected to the outer bottom of the filter box. A support base plate is connected to the bottom of each of the second support legs.

[0007] Preferably, a positioning rod is connected to the inner wall of the filter box, a positioning connector is connected to the positioning rod, a support cylinder is connected to the positioning connector, a telescopic rod is slidably connected inside the support cylinder, a support spring is provided inside the support cylinder, the support spring abuts against the telescopic rod, and a scraper is connected to one end of the telescopic rod outside the support cylinder.

[0008] Preferably, the filter box has a plurality of first snap-fit ​​ring grooves on its open end face, and the box cover has a plurality of second snap-fit ​​ring grooves corresponding to the first snap-fit ​​ring grooves. A first sealing ring is snapped into the first snap-fit ​​ring groove and the second snap-fit ​​ring groove. A third snap-fit ​​ring groove is opened on the outer end face of the filter plate, and a second sealing ring is snapped into the third snap-fit ​​ring groove.

[0009] Preferably, the steam replenishment assembly includes a steam replenishment tank, a water storage tank, an atomizer, and a water pump. The side wall of the steam replenishment tank is connected to a third air inlet pipe and a third air outlet pipe. The third air inlet pipe is connected to the air outlet of the steam turbine. The top of the steam replenishment tank is connected to the water storage tank via a connecting frame. The steam replenishment tank is connected to the water storage tank via a water supply pipe. A one-way valve is connected to the water supply pipe. The water supply pipe is connected to the atomizer inside the steam replenishment tank. A tank cover is connected to the top opening of the water storage tank. A water inlet pipe is connected to the tank cover. The water pump is connected to the tank cover. The water inlet pipe is connected to the water outlet of the water pump. A drain pipe is connected to the bottom of the steam replenishment tank. A third valve is connected to the drain pipe. Several third support legs are connected to the outer end face of the bottom of the steam replenishment tank.

[0010] Preferably, the connecting frame includes an upper connecting ring, a lower connecting ring, and a plurality of support rods. The upper connecting ring and the lower connecting ring are respectively connected to the water storage tank and the steam replenishment tank, and the plurality of support rods are evenly connected to the upper connecting ring and the lower connecting ring.

[0011] Preferably, the water supply pipe includes an upper pipe and a lower pipe, and the one-way valve includes a valve body, a plug head, and a support spring. The valve body has an inlet hole and an outlet hole at both ends, which are connected to and communicate with the upper pipe and the lower pipe, respectively. The valve body has a telescopic hole that communicates with the inlet hole and the outlet hole. The plug head and the positioning spring are disposed in the telescopic hole, and the two ends of the positioning spring abut against the inner bottom of the telescopic hole and the plug head, respectively. Several extension rods extend from the side end face of the plug head. A sealing head is snapped into the end face of the plug head near the inlet hole. The plug head extends into a snap-fit ​​joint with a mushroom-shaped vertical cross section. A snap-fit ​​groove with a mushroom-shaped vertical cross section is opened in the sealing head, and the snap-fit ​​joint is snapped into the snap-fit ​​groove.

[0012] The following beneficial effects can be achieved by adopting the technical solution of this utility model: (1) By using the cyclone separator, the condensate in the high-pressure high-temperature steam is separated by centrifugation, so that the condensate falls to the bottom along the cylinder wall and can be discharged periodically, thereby ensuring the smooth operation of subsequent equipment and pipelines; (2) By using the filter assembly, the trace amount of condensate in the high-pressure high-temperature steam is filtered; (3) By using the steam turbine and generator set, the high-temperature high-pressure steam is depressurized to form low-pressure steam, and the energy lost in the process is used to generate electricity, thereby realizing the system utilization of energy and improving the energy utilization rate; (4) By using the steam replenishment assembly, the steam is replenished to the low-pressure steam, increasing the amount of low-pressure steam and facilitating the subsequent use of low-pressure steam; The technical solution of this utility model has a wide application prospect in the field of energy system utilization technology. Attached Figure Description

[0013] Figure 1This is a perspective view of a furnace waste energy recycling device according to the present invention.

[0014] Figure 2 This is a cross-sectional view of the cyclone separation component of a furnace waste energy recycling device according to this utility model.

[0015] Figure 3 This is a cross-sectional view of the filter assembly of a furnace waste energy recycling device according to the present invention.

[0016] Figure 4 Bit Figure 3 Enlarged view of a portion of region A in the middle.

[0017] Figure 5 Bit Figure 3 Enlarged view of a portion of region B in the middle.

[0018] Figure 6 This is a partial perspective view of the filter assembly of a furnace waste energy recycling device according to the present invention.

[0019] Figure 7 This is a cross-sectional view of the steam replenishment component of a furnace waste energy recycling device according to this utility model.

[0020] Figure 8 Bit Figure 7 Enlarged view of a portion of region C.

[0021] The components are as follows: 1. First air inlet pipe; 2. Separator cylinder; 3. Cylinder cover; 4. Fixing rod; 5. Spiral guide vane; 6. First drain pipe; 7. First valve; 8. First support leg; 9. First air outlet pipe; 10. Filter box; 11. Box cover; 12. First snap-fit ​​ring groove; 13. Second snap-fit ​​ring groove; 14. First sealing ring; 15. First bearing; 16. Second bearing; 17. Connecting shaft; 18. Drive fan blade; 19. Connecting disc; 20. Connecting rod; 21. Filter plate; 22. Third snap-fit ​​ring groove; 23. Second sealing ring; 24. Positioning rod; 25. Positioning joint; 26. Support cylinder; 27. Telescopic rod; 28. Support spring; 29. ​​Scraper; 30. Drain hole; 31. Second drain pipe; 32. Second valve; 33. Second support leg. 34. Support base plate; 35. Second air inlet pipe; 36. Second air outlet pipe; 37. First air supply pipe; 38. Second air supply pipe; 39. Steam turbine; 40. Generator set; 41. Third air supply pipe; 42. Steam replenishment tank; 43. Third air inlet pipe; 44. Third air outlet pipe; 45. Drain pipe; 46. Third valve; 47. Third support leg; 48. Lower connecting ring; 49. Upper connecting ring; 50. Support rod; 51. Upper pipe; 52. Lower pipe; 53. One-way valve; 101. Valve body; 102. Sealing head; 103. Extension rod; 104. Positioning spring; 105. Snap connector; 106. Sealing head; 107. Water outlet; 108. Water inlet; 54. Water storage tank; 55. Tank cover; 56. Water inlet pipe; 57. Water pump; 58. Atomizer. Detailed Implementation

[0022] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] This application discloses a device for reusing waste energy from furnaces and kilns. (Refer to...) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 The system includes a cyclone separator for centrifugally separating condensate (containing solid impurities ≥50μm) from steam, a filter assembly for filtering trace amounts of condensate (containing solid impurities 5μm-20μm) from steam, a steam turbine 39, a generator set 40, and a steam replenishment assembly to increase steam volume. The high-temperature and high-pressure steam generated by the furnace passes sequentially through the cyclone separator, the filter assembly, the steam turbine 39, and the steam replenishment assembly. The output shaft of the steam turbine 39 is detachably and fixedly connected to the rotating shaft of the generator set 40 via a coupling. This allows the high-pressure and high-temperature steam generated by the furnace to be separated first by the cyclone separator to remove condensate. Then, the filter assembly further removes trace amounts of condensate from the high-pressure and high-temperature steam, thus ensuring the cleanliness of the high-pressure and high-temperature steam and preventing clogging of equipment and pipelines, which would affect the flow of subsequent steam. The steam turbine 39 and the generator set 40 are then used to de-heat and depressurize the high-pressure and high-temperature steam, thereby utilizing the energy in this process to generate electricity. Finally, the steam replenishment assembly increases the content of low-pressure steam, facilitating its subsequent use in other directions.

[0025] Reference Figure 1 , Figure 2The cyclone separator assembly includes a separator cylinder 2. A first inlet pipe 1 and a first outlet pipe 9 are connected to the side wall of the separator cylinder 2. The first inlet pipe 1 is located at the upper end of the side wall of the separator cylinder 2, and the first outlet pipe 9 is positioned opposite and located at the lower end of the side wall of the separator cylinder 2. This allows the high-temperature, high-pressure steam generated during furnace operation to enter the separator cylinder 2 through the first inlet pipe 1 and then exit through the first outlet pipe 9. A cylinder cover 3 is detachably and securely connected to the upper opening of the separator cylinder 2 by bolts. A sealing gasket is provided between the cylinder cover 3 and the separator cylinder 2, allowing the upper opening of the separator cylinder 2 to be sealed by the cylinder cover 3, maintaining a sealed state inside the separator cylinder 2. The detachable cylinder cover 3 also facilitates maintenance of the interior of the separator cylinder 2. A fixing rod 4 is detachably and securely connected to the inner end face of the cylinder cover 3 by bolts, connecting the fixing rod 4 and the cylinder cover 3 together to form a single unit. A spiral guide vane 5 is welded to or detachably fixed to the fixing rod 4 via bolts, connecting the spiral guide vane 5 to the fixing rod 4 to form a whole, which in turn connects to the cylinder cover 3. This allows the spiral guide vane 5 to be positioned inside the separation cylinder 2, guiding the high-temperature, high-pressure steam into the separation cylinder 2 and creating a spiral airflow. This centrifugal separation of the condensate from the high-temperature, high-pressure steam causes the condensate to fall onto the inner wall of the separation cylinder 2. Due to the downward flow of the high-temperature, high-pressure steam, combined with the weight of the condensate, the condensate falls along the cylinder wall to the bottom of the separation cylinder 2. The bottom of the separation cylinder 2 is arc-shaped to facilitate the collection of the condensate at the bottom. A first drain pipe 6 connects to the bottom of the separation cylinder 2, allowing the condensate collected at the bottom to be discharged. A first valve 7 connects to the first drain pipe 6, controlling its opening and closing. Several first support legs 8 are welded to or detachably fixed to the outer end face of the bottom of the separator 2 by bolts, so that the several first support legs 8 are connected to the bottom of the separator 2, thereby supporting and limiting the separator 2, and at the same time enabling the separator 2 to be lifted off the ground, so as to facilitate the drainage of condensate at the bottom of the separator 2.

[0026] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6The filter assembly includes a filter box 10. A cover 11 is detachably and securely connected to the opening of the filter box 10 by bolts, sealing the opening and maintaining a sealed state. The detachable cover 11 also facilitates maintenance of the filter box 10's interior. The opening face of the filter box 10 has several first snap-fit ​​grooves 12, and the cover 11 has several second snap-fit ​​grooves 13 corresponding to the first snap-fit ​​grooves 12. A first sealing ring 14 is engaged within the first and second snap-fit ​​grooves 12 and 13, thus confining the first sealing ring 14 and preventing it from detaching from the cover 11 and the opening of the filter box 10. This seals the gap between the cover 11 and the filter box 10, maintaining a sealed state inside the filter box 10. The end face of the filter box 10 furthest from the cover 11 is connected to a second air inlet pipe 35. The second air inlet pipe 35 is connected to the cyclone separator assembly, that is, the second air inlet pipe 35 is connected to the first air outlet pipe 9 in the cyclone separator assembly through the first air supply pipe 37, so that the high-pressure and high-temperature steam output from the first air outlet pipe 9 enters the filter box 10 through the first air supply pipe 37 and the second air inlet pipe 35. The cover 11 is connected to a second air outlet pipe 36, which is connected to the air inlet of the turbine 39 through the second air supply pipe 38, so that the high-temperature and high-pressure steam filtered by the filter box 10 is discharged from the filter box 10 through the second air outlet pipe 36, and then transported to the turbine 39 through the second air supply pipe 38. After being depressurized and decooled by the turbine 39, the throttling energy is converted into kinetic energy, realizing the rotation of the output shaft on the turbine 39, which in turn drives the rotation shaft of the generator to rotate, so that the generator generates electricity.

[0027] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6The inner end faces of the filter box 10 and the cover 11 are detachably and fixedly connected to a first bearing 15 and a second bearing 16 by bolts, so that the first bearing 15 and the second bearing 16 are connected to the filter box 10 and the cover 11 respectively to form a whole. A connecting shaft 17 is interference-fitted inside the first bearing 15 and the second bearing 16, so that the connecting shaft 17 is connected to the filter box 10 and the cover 11 through the first bearing 15 and the second bearing 16, and the connecting shaft 17 can rotate relative to the filter box 10 and the cover 11 through the first bearing 15 and the second bearing 16. A drive fan blade 18 and a connecting plate 19 are detachably and fixedly connected to the connecting shaft 17 by bolts, so that the drive fan blade 18 and the connecting plate 19 are connected to the connecting shaft 17, so that they can rotate simultaneously relative to the filter box 10 and the cover 11. Thus, when high-temperature and high-pressure steam enters the filter box 10 through the second air inlet pipe 35, the airflow blows the drive fan blade 18 to rotate, the drive fan blade 18 drives the connecting shaft 17 to rotate, and the connecting shaft 17 drives the connecting plate 19 to rotate simultaneously. A plurality of connecting rods 20 extend from the connecting plate 19, and the connecting rods 20 are evenly arranged in a ring around the axis of the connecting plate 19. A filter plate 21 is detachably and fixedly connected to the connecting rods 20 and the connecting plate 19 by bolts. That is, the filter plate 21 is coaxial with the connecting plate 19, so that the filter plate 21 and the connecting plate 19 are connected together to form a whole, thus allowing them to rotate simultaneously with the connecting shaft 17. The connecting rods 20 connect and constrain the filter plate 21, ensuring that the connecting plate 19 and the filter plate 21 are on the same horizontal plane. This allows the filter plate 21 to filter the high-temperature, high-pressure steam passing through the filter box 10. A filter membrane, which is a ceramic filter membrane, is provided on the end face of the filter plate 21 near the drive fan blade 18. The filter plate 21 supports and constrains the filter membrane, allowing for more detailed filtration of the high-temperature, high-pressure steam, removing trace amounts of condensate and ensuring that the steam passing through the filter box 10 is cleaner. A third snap-fit ​​groove 22 is provided on the outer end face of the filter plate 21. A second sealing ring 23 is snapped into the third snap-fit ​​groove 22, so that the second sealing ring 23 is snapped and limited by the third snap-fit ​​groove 22, preventing the second sealing ring 23 from detaching from the filter plate 21. The second sealing ring 23 is used to seal the gap between the filter plate 21 and the inner wall of the filter box 10, preventing high temperature and high pressure steam from leaking out from the inner wall of the filter plate 21 and the filter box 10, and does not affect the rotation of the filter plate 21 relative to the filter box 10.

[0028] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6A positioning rod 24 is detachably and fixedly connected to the inner wall of the filter box 10 by bolts, so that the positioning rod 24 is connected to the inner wall of the filter box 10 to form a whole, and the detachable connection facilitates later disassembly and maintenance. A positioning connector 25 is detachably and fixedly connected to the positioning rod 24 by bolts, so that the positioning connector 25 is connected to the positioning rod 24, and then to the inner wall of the filter box 10, thereby realizing the connection limitation of the positioning rod 24 to the positioning connector 25. A support cylinder 26 is welded to the positioning connector 25, so that the support cylinder 26 is connected to the positioning connector 25 to form a whole. A telescopic rod 27 is slidably connected inside the support cylinder 26, so that the telescopic rod 27 can slide inside the support cylinder 26, and the support cylinder 26 and the telescopic rod 27 are connected together. A support spring 28 is installed inside the support cylinder 26. The support spring 28 abuts against the telescopic rod 27, providing elastic force to the telescopic rod 27. This allows the telescopic rod 27 to extend to its maximum length beyond the support cylinder 26 under the elastic force of the support spring 28 alone. A scraper 29 is detachably and fixedly connected to one end of the telescopic rod 27 outside the support cylinder 26 by bolts, forming a single unit with the scraper 29. The support cylinder 26 and the telescopic rod 27 are non-circular to prevent the telescopic rod 27 from rotating relative to the support cylinder 26, which would cause the scraper 29 to rotate relative to it. The scraper 29 abuts against the outer surface of the filter membrane, scraping away condensate from the membrane. This prevents condensate buildup on the membrane, which would hinder the rapid passage of high-temperature, high-pressure steam, and allows the scraped condensate to flow down the scraper 29 to the bottom of the filter box 10.

[0029] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The filter box 10 has a drain hole 30 at its bottom, which allows condensate collected at the bottom of the filter box 10 to be discharged. A second drain pipe 31, connected to the drain hole 30, is sealed and welded to the bottom of the filter box 10 at the drain hole 30, guiding the condensate discharged from the drain hole 30 through the second drain pipe 31. A second valve 32 is connected to the second drain pipe 31, allowing the second drain pipe 31 to be opened and closed. Several second support legs 33 are detachably and fixedly connected to the bottom of the filter box 10 by bolts, connecting the second support legs 33 to the bottom of the filter box 10, thus supporting the filter box 10 and allowing it to be lifted off the ground. The bottom of the second support leg 33 is welded or detachably fixed to a support base plate 34 by bolts, which increases the contact area between the second support leg 33 and the ground, thereby enabling the filter box 10 to stand more stably on the ground via the second support leg 33.

[0030] Reference Figure 1 , Figure 6 , Figure 7 The outlet of the steam turbine 39 is connected to the steam replenishment assembly via a third gas transmission pipe 41. This allows low-pressure steam, depressurized and de-cooled by the steam turbine 39, to be transported to the steam replenishment assembly via the third gas transmission pipe 41. Water is then added to increase the output of the low-pressure steam. The steam replenishment assembly includes a steam replenishment tank 42, a water storage tank 54, an atomizer 58, and a water pump 57. The side wall of the steam replenishment tank 42 is connected to a third air inlet pipe 43 and a third air outlet pipe 44. The third air inlet pipe 43 is connected to the outlet of the steam turbine 39 via the third gas transmission pipe 41. This allows low-pressure steam discharged from the outlet of the steam turbine 39 to enter the steam replenishment tank 42 via the third gas transmission pipe 41 and the third air inlet pipe 43. After water is added to the tank to increase the amount of low-pressure steam, it is discharged through the third air outlet pipe 44. The top of the steam replenishment tank 42 is detachably and bolted to the water storage tank 54 via a connecting frame. The steam replenishment tank 42 is connected to the water storage tank 54 via a water supply pipe, forming a single unit. Alternatively, both can be installed separately, with the water storage tank 54 supplying water to the steam replenishment tank 42. The connecting frame includes an upper connecting ring 49, a lower connecting ring 48, and several support rods 50. The upper connecting ring 49 and the lower connecting ring 48 are detachably and bolted to the water storage tank 54 and the steam replenishment tank 42, respectively, forming a single unit. Several support rods 50 are evenly welded or detachably bolted to the upper connecting ring 49 and the lower connecting ring 48, connecting them together to form a single unit, thus connecting the steam replenishment tank 42 and the water storage tank 54 together as a single unit.

[0031] Reference Figure 1 , Figure 6 , Figure 7A one-way valve 53 is connected to the water supply pipe to control the flow direction of water in the pipe and prevent steam in the steam replenishment tank 42 from entering the water storage tank 54 through the steam supply pipe. The water supply pipe includes an upper pipe 51 and a lower pipe 52. The one-way valve 53 is located between the upper pipe 51 and the lower pipe 52. The upper pipe 51 is connected to the water storage tank 54, and the lower pipe 52 is connected to the steam replenishment tank 42. This allows the one-way valve 53 to control the opening and closing direction of the water supply pipe, thereby preventing steam in the steam replenishment tank 42 from entering the water storage tank 54. The one-way valve 53 includes a valve body 101, a plug head 102, and a positioning spring 104. The valve body 101 has an inlet hole 108 and an outlet hole 107 at both ends. The inlet hole 108 and the outlet hole 107 are connected to the upper pipe 51 and the lower pipe 52 respectively, so that the water in the water storage tank 54 enters the valve body 101 through the upper pipe 51 and the inlet hole 108, and is then transported to the steam replenishment tank 42 through the outlet hole 107 and the lower pipe 52. The valve body 101 has a telescopic hole connecting the inlet hole 108 and the outlet hole 107. A plug head 102 and a positioning spring 104 are disposed within the telescopic hole, with both ends of the positioning spring 104 contacting the inner bottom of the telescopic hole and the plug head 102, respectively. This allows the positioning spring 104 to provide elastic force to the plug head 102, pushing it partially into the inlet hole 108 under the force of the positioning spring 104 alone, thus sealing the inlet hole 108. Several extension rods 103 extend from the side end face of the plug head 102, increasing its width while minimizing the space occupied between the plug head 102 and the telescopic hole, facilitating water discharge from the outlet hole 107 through the telescopic hole. A sealing head 106 is snapped onto the end face of the plugging head 102 near the water inlet 108. The sealing head 106 is made of high-temperature resistant rubber, which allows for a tighter seal of the water inlet 108. The plugging head 102 extends to a snap-fit ​​connector 105 with a mushroom-shaped vertical cross-section. A snap-fit ​​groove with a mushroom-shaped vertical cross-section is provided inside the sealing head 106. The snap-fit ​​connector 105 snaps into the snap-fit ​​groove, thereby achieving a snap-fit ​​connection between the plugging head 102 and the sealing head 106 and preventing the snap-fit ​​connector 105 from detaching from the plugging head 102.

[0032] Reference Figure 1 , Figure 6 , Figure 7The water supply pipe is connected to the atomizer 58 inside the steam replenishment tank 42. Water entering the steam replenishment tank 42 through the water supply pipe via the telescopic rod 27 is atomized by the atomizer 58, thereby increasing the amount of low-pressure steam generated by the heat of the water. The top opening of the water storage tank 54 is detachably connected to a tank cover 55 by bolts, and a sealing gasket is provided between the tank cover 55 and the water storage tank 54. This seals the opening of the water storage tank 54, ensuring a tight seal inside the tank. The detachable connection also facilitates cleaning and maintenance of the inside of the water storage tank 54. A water inlet pipe 56 is connected to the tank cover 55, allowing water to be added to the water storage tank 54. The water pump 57 is detachably fixed to the tank cover 55 by bolts, forming a single unit with the tank cover 55. The inlet pipe 56 is connected to the outlet of the water pump 57, allowing water to be pumped by the pump 57 and transported through the inlet pipe 56 to the water storage tank 54. The pump 57 also provides pressure to the water storage tank 54, facilitating the transfer of water from the tank to the steam replenishment tank 42 via the one-way valve 53. A drain pipe 45 is connected to the bottom of the steam replenishment tank 42, allowing water collected at the bottom to be drained. A third valve 46 is connected to the drain pipe 45, allowing control of its opening and closing. Several third support legs 47 are detachably and fixedly connected to the bottom outer end face of the steam replenishment tank 42 with bolts, forming a single unit that supports the tank and allows it to detach from the ground.

[0033] In operation, the high-pressure, high-temperature steam generated by the furnace is first transported to the separator 2 through the first inlet pipe 1. The high-pressure, high-temperature steam forms a spiral airflow through the spiral guide vanes 5, separating the condensate in the steam by centrifugation. It is then discharged through the first outlet pipe 9, and then transported to the filter box 10 through the first gas delivery pipe 37 and the second inlet pipe 35. Inside the filter box 10, the high-pressure, high-temperature steam drives the drive fan blades 18 to rotate. The drive fan blades 18, via the connecting shaft 17, drive the connecting plate 19 and the filter plate 21 to rotate, thus filtering the high-pressure, high-temperature steam through the filter membrane on the filter plate 21. The steam is then discharged through the second outlet pipe 36. During the rotation of the filter plate 21, the scraper 29 scrapes away the condensate on the filter membrane to prevent condensate accumulation and blockage, which would hinder the passage of high-pressure, high-temperature steam. The high-temperature, high-pressure steam discharged from the second outlet pipe 36 is transported to the turbine 39 through the second gas transmission pipe 38 for de-cooling and pressure reduction. Simultaneously, the energy generated during this process is converted into kinetic energy, driving the output shaft of the turbine 39 to rotate. The output shaft of the turbine 39 drives the generator to rotate, generating electricity. The generated electricity is then transmitted back to the company's internal cables or external circuits via a booster and stabilizer. The low-pressure steam discharged from the turbine 39 is transported to the steam replenishment tank 42 through the third gas transmission pipe 41 and the third gas inlet pipe 43. At this time, the water pump 57 is energized, replenishing water to the water storage tank 54 and increasing the pressure within it. Water is then supplied to the steam replenishment tank 42 via the one-way valve 53, forming atomized water droplets through the atomizer 58. These atomized water droplets vaporize into low-pressure steam under the heat of the steam, thereby increasing the amount of low-pressure steam.

[0034] The generated electricity is used in two ways: firstly, for an air separation unit to drive the air separation equipment, which separates air into gaseous products such as oxygen, nitrogen, and argon, and liquid products such as liquid oxygen, liquid nitrogen, and liquid argon. Some of the separated oxygen is used for oxygen-enriched coal injection in boilers to improve combustion efficiency, reduce coal consumption and pollutant emissions, while the remaining nitrogen and other gases can be sold, increasing the company's revenue. Secondly, the electricity generated is used to produce hydrogen through water electrolysis. The electrolysis equipment converts electrical energy into chemical energy stored in hydrogen. The produced hydrogen is mixed with pulverized coal or natural gas, and combined with oxygen-enriched combustion technology, it is used in industrial production. It is introduced into the furnace combustion system and mixed with natural gas or pulverized coal to achieve a closed-loop energy system utilization method that promotes energy-saving combustion. Because hydrogen has high combustion efficiency and the oxygen-enriched environment promotes more complete combustion, energy consumption and pollutant emissions are reduced. Thirdly, the generated low-pressure steam is transported to the industrial park to meet the steam needs of enterprises within the park. Through a pipeline system, low-pressure steam is stably supplied to various enterprises in the industrial park for use in production processes, heating, and other stages. This invention achieves effective recovery and utilization of steam energy, converting waste energy from furnace operations into electrical energy or driving compressors and other machinery, thereby improving energy utilization efficiency. By increasing the amount of low-pressure steam and supplying it to industrial parks, it meets the steam demand of industrial production and achieves rational energy allocation. The comprehensive utilization of the generated electricity closely integrates power generation or the use of compressors and other machinery with industrial production processes such as air separation, boiler combustion, and hydrogen production, forming a closed-loop energy cycle. This further improves energy utilization efficiency, reduces production costs, and simultaneously reduces the consumption of fossil non-renewable energy sources such as coal, thus reducing pollutant emissions and demonstrating good economic and environmental benefits.

[0035] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for reusing waste energy in furnaces and kilns, characterized in that, The system includes a cyclone separator for centrifugal separation of condensate from steam, a filter assembly for filtering trace amounts of condensate from steam, a steam turbine (39), a generator set (40), and a steam replenishment assembly to increase steam volume. High-temperature, high-pressure steam generated by the furnace passes sequentially through the cyclone separator, the filter assembly, the steam turbine (39), and the steam replenishment assembly. The output shaft of the steam turbine (39) is connected to the rotating shaft of the generator set (40). The filter assembly includes a filter box (10), with a cover (11) connected to the opening of the filter box (10). The inner end faces of the filter box (10) and the box cover (11) are respectively connected to the first bearing (15) and the second bearing (16). The first bearing (15) and the second bearing (16) are provided with an interference fit connecting shaft (17). The connecting shaft (17) is connected to the drive fan blade (18) and the connecting plate (19). Several connecting rods (20) extend from the connecting plate (19). The connecting rods (20) and the connecting plate (19) are connected to the filter plate (21). The filter plate (21) is provided with a filter membrane on the end face near the drive fan blade (18).

2. The furnace waste energy recycling device according to claim 1, characterized in that, The cyclone separator assembly includes a separator cylinder (2). The side wall of the separator cylinder (2) is connected to a first air inlet pipe (1) and a first air outlet pipe (9). The first air inlet pipe (1) is located at the upper end of the side wall of the separator cylinder (2). The first air outlet pipe (9) is arranged opposite to and located at the lower end of the side wall of the separator cylinder (2). A cylinder cover (3) is connected to the upper opening of the separator cylinder (2). A fixing rod (4) is connected to the inner end face of the cylinder cover (3). A spiral guide vane (5) is connected to the fixing rod (4). The bottom of the separator cylinder (2) is arc-shaped. The bottom of the separator cylinder (2) is connected to a first drain pipe (6). A first valve (7) is connected to the first drain pipe (6). A plurality of first support legs (8) are connected to the outer end face of the bottom of the separator cylinder (2).

3. The furnace waste energy recycling device according to claim 1, characterized in that, The filter box (10) has a second air inlet pipe (35) connected to the end face away from the cover (11). The cover (11) has a second air outlet pipe (36) connected to it. The second air inlet pipe (35) is connected to the cyclone separator assembly. The second air outlet pipe (36) is connected to the air inlet of the steam turbine (39). The air outlet of the steam turbine (39) is connected to the steam replenishment assembly. The bottom of the filter box (10) has a drain hole (30). The bottom of the filter box (10) at the drain hole (30) is connected to a second drain pipe (31) connected to the drain hole (30). The second drain pipe (31) is connected to a second valve. 32), the bottom of the filter box (10) is connected to several second support legs (33), the bottom of the second support legs (33) is connected to a support base plate (34), the opening end face of the filter box (10) is provided with several first snap-fit ​​ring grooves (12), the cover (11) is provided with several second snap-fit ​​ring grooves (13) corresponding to the first snap-fit ​​ring grooves (12), the first snap-fit ​​ring grooves (12) and the second snap-fit ​​ring grooves (13) are snapped with first sealing rings (14), the outer end face of the filter plate (21) is provided with a third snap-fit ​​ring groove (22), the third snap-fit ​​ring groove (22) is snapped with a second sealing ring (23).

4. The furnace waste energy recycling device according to claim 1, characterized in that, The inner wall of the filter box (10) is connected to a positioning rod (24), a positioning connector (25) is connected to the positioning rod (24), a support cylinder (26) is connected to the positioning connector (25), a telescopic rod (27) is slidably connected inside the support cylinder (26), a support spring (28) is provided inside the support cylinder (26), the support spring (28) abuts against the telescopic rod (27), and a scraper (29) is connected to one end of the telescopic rod (27) outside the support cylinder (26).

5. A furnace waste energy recycling device according to claim 1, characterized in that, The steam replenishment assembly includes a steam replenishment tank (42), a water storage tank (54), an atomizer (58), and a water pump (57). The side wall of the steam replenishment tank (42) is connected to a third air inlet pipe (43) and a third air outlet pipe (44). The third air inlet pipe (43) is connected to the air outlet of the steam turbine (39). The top of the steam replenishment tank (42) is connected to the water storage tank (54) through a connecting bracket. The steam replenishment tank (42) is connected to the water storage tank (54) through a water supply pipe. A one-way valve (53) is connected to the water supply pipe. The steam replenishment tank (42) is connected to the atomizer (58). The top opening of the water storage tank (54) is connected to the tank cover (55). The tank cover (55) is connected to the water inlet pipe (56). The water pump (57) is connected to the tank cover (55). The water inlet pipe (56) is connected to the outlet of the water pump (57). The bottom of the steam replenishment tank (42) is connected to the drain pipe (45). The drain pipe (45) is connected to the third valve (46). The bottom outer end face of the steam replenishment tank (42) is connected to several third support legs (47).

6. A furnace waste energy recycling device according to claim 5, characterized in that, The connecting frame includes an upper connecting ring (49), a lower connecting ring (48), and several support rods (50). The upper connecting ring (49) and the lower connecting ring (48) are respectively connected to the water storage tank (54) and the steam replenishment tank (42). Several support rods (50) are evenly connected to the upper connecting ring (49) and the lower connecting ring (48).

7. A furnace waste energy recycling device according to claim 5, characterized in that, The water supply pipe includes an upper pipe (51) and a lower pipe (52). The one-way valve (53) includes a valve body (101), a plug (102), and a support spring (28). The valve body (101) has an inlet hole (108) and an outlet hole (107) at both ends. The inlet hole (108) and the outlet hole (107) are connected to and communicate with the upper pipe (51) and the lower pipe (52), respectively. The valve body (101) has a telescopic hole that communicates with the inlet hole (108) and the outlet hole (107). The plug (102) and the positioning spring are... (104) is set inside the telescopic hole, and the two ends of the positioning spring (104) abut against the inner bottom of the telescopic hole and the sealing head (102) respectively. Several extension rods (103) extend from the side end face of the sealing head (102). A sealing head (106) is snapped onto the end face of the sealing head (102) near the water inlet (108). A snap-fit ​​connector (105) with a mushroom-shaped vertical cross section extends from the sealing head (102). A snap-fit ​​groove with a mushroom-shaped vertical cross section is opened in the sealing head (106). The snap-fit ​​connector (105) is snapped into the snap-fit ​​groove.

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