Furnace waste energy recycling system

Abstract

The invention relates to the technical field of energy system utilization, in particular to a kiln complementary energy recycling system which comprises a cyclone separation assembly used for centrifugally separating condensate water in steam, a filtering assembly used for filtering trace condensate water in the steam, a steam turbine, a generator set and a steam supplementing assembly used for increasing the steam amount. High-temperature and high-pressure steam generated by the furnace sequentially passes through the cyclone separation assembly, the filtering assembly, the steam turbine and the steam supplementing assembly, and an output shaft of the steam turbine is connected with a rotating shaft of the generator set or a compressor and other machines. By means of hydrogen doping and oxygen adding, the using amount of natural gas or pulverized coal is reduced, the utilization efficiency of kiln fuel is improved, the optimal method for closed-loop circulation of the system is completed, non-renewable energy sources are saved, and the method has wide application prospects in the technical field of energy system utilization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy system utilization, and in particular to a kiln residual energy recycling system. BACKGROUND

[0002] In the metallurgical, chemical, building material and other industries that rely on high-temperature kilns for production, core equipment such as calcining furnaces, sintering machines and industrial boilers will continuously generate a large amount of high-temperature and high-pressure steam (the pressure can reach 3.82-10.8 MPa and the temperature is 450-540℃) with stable parameters during operation. This kind of steam itself contains huge heat energy and pressure energy, which is a secondary energy with high recycling value in industrial production. However, in the traditional industrial production system, the treatment of these high-temperature and high-pressure steam is not satisfactory, resulting in a long-term low energy utilization efficiency. On the one hand, due to the lower demand of downstream steam equipment (such as heat exchangers, dryers, etc.) for steam parameters than the steam parameters generated by the kiln, in order to meet the process requirements, enterprises usually use temperature and pressure reducing devices to directly treat the high-temperature and high-pressure steam. In this process, the pressure energy of the steam is directly consumed through the throttling action of the throttle valve, and a large amount of heat energy is wasted by spraying water into the steam to reduce the temperature. The energy that can be further utilized is not recovered, resulting in a serious "energy waste" phenomenon and causing resource waste. On the other hand, the traditional treatment mode not only causes direct energy loss, but also causes a series of chain problems, further increasing the production cost and environmental protection pressure of enterprises. From the economic cost point of view, in order to make up for the wasted energy, enterprises need to consume more primary energy (such as coal and natural gas) to maintain the normal operation of the kiln, resulting in a substantial increase in energy procurement costs. Therefore, a device is needed to solve the above problems. SUMMARY

[0003] In order to solve the problem that a large amount of high-temperature and high-pressure steam is generated in the operation process of traditional calcining furnaces, sintering machines and boilers, and the energy loss in the throttling process is not recovered, a kiln residual energy recycling system is invented.

[0004] The technical scheme of the present application is a kiln residual energy recycling system, which comprises a cyclone separation assembly for centrifugal separation of condensed water in steam, a filtering assembly for filtering trace condensed water in steam, a steam turbine, a generator set and a steam supplement assembly for increasing the amount of steam. The high-temperature and high-pressure steam generated by the kiln passes through the cyclone separation assembly, the filtering assembly, the steam turbine and the steam supplement assembly in sequence. The output shaft of the steam turbine is connected with the rotating shaft of the generator set.

[0005] Preferably, the cyclone separation assembly comprises a separation cylinder, a first air inlet pipe and a first air outlet pipe are communicated with the side wall of the separation cylinder, the first air inlet pipe is located at the upper end of the side wall of the separation cylinder, the first air outlet pipe is oppositely arranged and located at the lower end of the side wall of the separation cylinder, a cylinder cover is connected at the upper end of the separation cylinder, a fixed rod is connected at the inner end face of the cylinder cover, a spiral guide vane is connected on the fixed rod, the bottom of the separation cylinder is arc-shaped, a first blowdown pipe is communicated with the bottom of the separation cylinder, a first valve is communicated with the first blowdown pipe, and a plurality of first supporting legs are connected with the outer end face of the bottom of the separation cylinder.

[0006] Preferably, the filter assembly comprises a filter box, a box cover is connected at the opening of the filter box, a first bearing and a second bearing are respectively connected with the inner end faces of the filter box and the box cover, a connecting shaft is arranged in the first bearing and the second bearing in interference fit, a driving fan blade and a connecting disc are connected on the connecting shaft, a plurality of connecting rods are extended on the connecting disc, a filter plate is connected on the connecting rods and the connecting disc, a filter membrane is arranged on the end face of the filter plate close to the driving fan blade, a second air inlet pipe is communicated with the end face of the filter box away from the box cover, a second air outlet pipe is communicated with the box cover, the second air inlet pipe is communicated with the cyclone separation assembly, the second air outlet pipe is communicated with the air inlet of the steam turbine, the air outlet of the steam turbine is communicated with the steam supplement assembly, a blowdown hole is arranged in the bottom of the filter box, a second blowdown pipe which is communicated with the blowdown hole is connected with the outer bottom of the filter box at the blowdown hole, a second valve is communicated with the second blowdown pipe, a plurality of second supporting legs are connected with the outer bottom of the filter box, and a supporting bottom plate is connected with the bottom of the second supporting legs.

[0007] Preferably, a positioning rod is connected with the inner side wall of the filter box, a positioning connector is connected on the positioning rod, a supporting cylinder is connected on the positioning connector, a telescopic rod is slidably connected in the supporting cylinder, a supporting spring is arranged in the supporting cylinder and abuts against the telescopic rod, and a scraper is connected on one end of the telescopic rod outside the supporting cylinder.

[0008] Preferably, a plurality of first clamping ring grooves are arranged on the opening end face of the filter box, a plurality of second clamping ring grooves corresponding to the first clamping ring grooves are arranged on the box cover, a first sealing ring is clamped in the first clamping ring grooves and the second clamping ring grooves, and a third clamping ring groove is arranged on the outer side end face of the filter plate, and a second sealing ring is clamped in the third clamping ring groove.

[0009] Preferably, the steam supplement assembly comprises a steam supplement tank, a water storage tank, an atomizer and a water pump, the side wall of the steam supplement tank is communicated with a third air inlet pipe and a third air outlet pipe, the third air inlet pipe is communicated with the air outlet of the steam turbine, the top of the steam supplement tank is connected with the water storage tank through a connecting frame, the steam supplement tank is communicated with the water storage tank through a water delivery pipe, the water delivery pipe is communicated with a one-way valve, the water delivery pipe is communicated with the atomizer in the steam supplement tank, the top of the water storage tank is connected with a tank cover, the tank cover is communicated with a water inlet pipe, the water pump is connected with the tank cover, the water inlet pipe is communicated with the water outlet of the water pump, the bottom of the steam supplement tank is communicated with a drain pipe, the drain pipe is communicated with a third valve, and the bottom of the steam supplement tank is connected with a plurality of third supporting legs.

[0010] Preferably, the connecting frame comprises an upper connecting ring, a lower connecting ring and a plurality of supporting rods, the upper connecting ring and the lower connecting ring are connected with the water storage tank and the steam supplement tank respectively, and the plurality of supporting rods are uniformly connected with the upper connecting ring and the lower connecting ring.

[0011] Preferably, the water delivery pipe comprises an upper pipe and a lower pipe, the one-way valve comprises a valve body, a blocking head and a supporting spring, the two ends of the valve body are provided with a water inlet hole and a water outlet hole, the water inlet hole and the water outlet hole are connected with the upper pipe and the lower pipe respectively and are communicated, the valve body is provided with an expansion hole communicated with the water inlet hole and the water outlet hole, the blocking head and the supporting spring are arranged in the expansion hole, the two ends of the supporting spring are abutted with the inner bottom of the expansion hole and the blocking head respectively, the side end surface of the blocking head extends a plurality of extension rods, the end surface of the blocking head close to the water inlet hole is clamped with a sealing head, the blocking head extends a clamping head with a mushroom-shaped vertical section, the sealing head is provided with a clamping groove with a mushroom-shaped vertical section, and the clamping head is clamped in the clamping groove.

[0012] The technical scheme of the present application can achieve the following beneficial effects: (1) the condensate in the high-pressure and high-temperature steam is separated by centrifugal separation assembly, so that the condensate falls along the cylinder wall into the bottom and can be discharged regularly, thereby ensuring the smooth operation of the subsequent equipment and pipelines; (2) the trace condensate in the high-pressure and high-temperature steam is filtered by the filtering assembly; (3) the high-temperature and high-pressure steam is reduced in pressure by the steam turbine and the generator set, thereby forming low-pressure steam, and the energy lost in the process is utilized for power generation, realizing systematic utilization of energy and improving the utilization rate of energy; (4) the steam supplement assembly supplements steam to the low-pressure steam, increasing the amount of low-pressure steam and facilitating the subsequent use of low-pressure steam; the technical scheme of the present application has a wide application prospect in the field of energy system utilization technology. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1A perspective view of a furnace waste energy recycling system according to the present application.

[0014] Figure 2 A sectional view of a cyclone separation assembly of a furnace waste energy recycling system according to the present application.

[0015] Figure 3 A sectional view of a filter assembly of a furnace waste energy recycling system according to the present application.

[0016] Figure 4 Bit Figure 3 A partial enlarged view of region A.

[0017] Figure 5 Bit Figure 3 A partial enlarged view of region B.

[0018] Figure 6 A partial perspective view of a filter assembly of a furnace waste energy recycling system according to the present application.

[0019] Figure 7 A sectional view of a steam supplement assembly of a furnace waste energy recycling system according to the present application.

[0020] Figure 8 Bit Figure 7 A partial enlarged view of region C.

[0021] Wherein, 1, the first intake pipe, 2, the separation cylinder, 3, the cylinder cover, 4, the fixed rod, 5, the spiral guide vane, 6, the first blowdown pipe, 7, the first valve, 8, the first support leg, 9, the first outlet pipe, 10, the filter box, 11, the box cover, 12, the first clamping ring groove, 13, the second clamping ring groove, 14, the first sealing ring, 15, the first bearing, 16, the second bearing, 17, the connecting shaft, 18, the driving fan blade, 19, the connecting disc, 20, the connecting rod, 21, the filter plate, 22, the third clamping ring groove, 23, the second sealing ring, 24, the positioning rod, 25, the positioning joint, 26, the support cylinder, 27, the telescopic rod, 28, the support spring, 29, the scraper, 30, the blowdown hole, 31, the second blowdown pipe, 32, the second valve, 33, the second support leg, 34, the support base plate, 35, the second intake pipe, 36, the second outlet pipe, 37, the first gas conveying pipe, 38, the second gas conveying pipe, 39, the steam turbine, 40, the generator set, 41, the third gas conveying pipe, 42, the steam supplement tank, 43, the third intake pipe, 44, the third outlet pipe, 45, the drain pipe, 46, the third valve, 47, the third support leg, 48, the lower connecting ring, 49, the upper connecting ring, 50, the support rod, 51, the upper pipe, 52, the lower pipe, 53, the check valve, 101, the valve body, 102, the plugging head, 103, the lengthened rod, 104, the positioning spring, 105, the clamping joint, 106, the sealing head, 107, the water outlet hole, 108, the water inlet hole, 54, the water storage tank, 55, the tank cover, 56, the water inlet pipe, 57, the water pump, 58, the atomizer. DETAILED DESCRIPTION

[0022] The technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The present application discloses a furnace waste energy recycling system. Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 , including cyclone separation assembly for centrifugal separation of condensate in steam (containing solid impurities ≥ 50 μm), filter assembly for filtering trace condensate in steam (containing solid impurities 5 μm-20 μm), steam turbine 39, generator set 40 and steam supplement assembly for increasing steam volume, high temperature and high pressure steam generated by the furnace passes through the cyclone separation assembly, the filter assembly, the steam turbine 39 and the steam supplement assembly in turn, the output shaft of the steam turbine 39 is detachably fixedly connected with the rotating shaft of the generator set 40 through the shaft coupling, so that the high pressure and high temperature steam generated by the furnace is first separated by the cyclone separation assembly to remove the condensate in the high pressure and high temperature steam, and then the trace condensate in the high pressure and high temperature steam is further removed by the filter assembly, so as to ensure the cleanliness of the high pressure and high temperature steam, avoid blocking the equipment and pipeline, and affect the flow of the subsequent steam. The steam turbine 39 and the generator set 40 are reused to realize the temperature reduction and pressure reduction of the high pressure and high temperature steam, so as to generate electricity by utilizing the energy in the process. Finally, the steam supplement assembly increases the content of low pressure steam, which is convenient for the subsequent use of low pressure steam in other directions.

[0025] Referring to Figure 1 、 Figure 2The cyclone separation assembly comprises a separation cylinder 2, a first air inlet pipe 1 and a first air outlet pipe 9 are communicated with the side wall of the separation cylinder 2, the first air inlet pipe 1 is located at the upper end of the side wall of the separation cylinder 2, and the first air outlet pipe 9 is oppositely arranged and located at the lower end of the side wall of the separation cylinder 2, so that high-temperature and high-pressure steam generated by the operation of the furnace is introduced into the separation cylinder 2 through the first air inlet pipe 1 and then discharged through the first air outlet pipe 9. The upper end opening of the separation cylinder 2 is detachably and sealingly fixedly connected with a cylinder cover 3 through bolts, and a sealing gasket is arranged between the cylinder cover 3 and the separation cylinder 2, so that the upper opening of the separation cylinder 2 is blocked through the cylinder cover 3, the sealing state of the separation cylinder 2 is maintained, and the inside of the separation cylinder 2 is maintained. The inside of the separation cylinder 2 is maintained. The inner end face of the cylinder cover 3 is detachably and fixedly connected with a fixed rod 4 through bolts, so that the fixed rod 4 and the cylinder cover 3 are connected together to form an integral whole. The fixed rod 4 is detachably and fixedly connected with a spiral guide vane 5 through welding or bolts, so that the spiral guide vane 5 and the fixed rod 4 are connected together to form an integral whole, and then the spiral guide vane 5 and the cylinder cover 3 are connected together, and then the spiral guide vane 5 is arranged in the separation cylinder 2, so that the high-temperature and high-pressure steam enters the separation cylinder 2 and forms a spiral airflow under the guidance of the spiral guide vane 5, so that the condensed water in the high-temperature and high-pressure steam is separated by centrifugal separation, so that the condensed water falls on the inner wall of the separation cylinder 2. Due to the flow of high-temperature and high-pressure steam from top to bottom, the condensed water falls along the wall into the bottom of the separation cylinder 2 under the cooperation of the weight of the condensed water itself. The bottom of the separation cylinder 2 is arc-shaped, facilitating the gathering of the condensed water falling into the bottom of the separation cylinder 2. The bottom of the separation cylinder 2 is communicated with a first blowdown pipe 6, facilitating the discharge of the condensed water gathered in the bottom of the separation cylinder 2 through the first blowdown pipe 6. The first blowdown pipe 6 is communicated with a first valve 7, so that the opening and closing of the first blowdown pipe 6 is controlled through the first valve 7. The outer end face of the bottom of the separation cylinder 2 is welded or detachably and fixedly connected with a plurality of first supporting legs 8 through bolts, so that the plurality of first supporting legs 8 and the bottom of the separation cylinder 2 are connected together, thereby supporting and limiting the separation cylinder 2, and realizing that the separation cylinder 2 can be separated from the ground, facilitating the discharge of the condensed water at the bottom of the separation cylinder 2.

[0026] Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6The filter assembly comprises a filter box 10, and a box cover 11 is detachably fixedly connected at an opening of the filter box 10 through bolts, so that the opening of the filter box 10 is plugged through the box cover 11, the filter box 10 is kept in a sealed state, and the inside of the filter box 10 is facilitated to be maintained through the detachable box cover 11. A plurality of first clamping ring grooves 12 are formed in an opening end surface of the filter box 10, a plurality of second clamping ring grooves 13 corresponding to the first clamping ring grooves 12 are formed in the box cover 11, and a first sealing ring 14 is clamped in the first clamping ring grooves 12 and the second clamping ring grooves 13, so that the first sealing ring 14 is limited through the first clamping ring grooves 12 and the second clamping ring grooves 13, the first sealing ring 14 is prevented from being separated from the opening of the filter box 10 and the box cover 11, the gap between the box cover 11 and the filter box 10 is sealed through the first sealing ring 14, and the filter box 10 is kept in a sealed state. A second air inlet pipe 35 is communicated with an end surface of the filter box 10 away from the box cover 11, the second air inlet pipe 35 is communicated with the cyclone separation assembly, that is, the second air inlet pipe 35 is communicated with the first air outlet pipe 9 in the cyclone separation assembly through a first air conveying 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 conveying pipe 37 and the second air inlet pipe 35. The box cover 11 is communicated with a second air outlet pipe 36, the second air outlet pipe 36 is communicated with an air inlet of a steam turbine 39 through a second air conveying pipe 38, so that the high-temperature and high-pressure steam filtered through the filter box 10 is discharged from the filter box 10 through the second air outlet pipe 36, and then conveyed into the steam turbine 39 through the second air conveying pipe 38, reduced in pressure and temperature through the steam turbine 39, and converted into kinetic energy, so as to realize the rotation of an output shaft of the steam turbine 39, drive the rotation of a rotating shaft of a generator, and make the generator generate electricity.

[0027] Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6, the inner end faces of the filter box 10 and the box cover 11 are detachably fixedly connected with the first bearing 15 and the second bearing 16 through bolts respectively, so that the first bearing 15 and the second bearing 16 are connected together with the filter box 10 and the box cover 11 to form an integral whole. The connecting shaft 17 is provided in the first bearing 15 and the second bearing 16 in interference fit, so that the connecting shaft 17 is connected together with the filter box 10 and the box 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 box cover 11 through the first bearing 15 and the second bearing 16. The driving fan blade 18 and the connecting disc 19 are detachably fixedly connected on the connecting shaft 17 through bolts, so that the driving fan blade 18 and the connecting disc 19 are connected together with the connecting shaft 17 to rotate simultaneously relative to the filter box 10 and the box cover 11, so that when the high-temperature and high-pressure steam enters into the filter box 10 through the second air inlet pipe 35, the airflow drives the driving fan blade 18 to rotate, the driving fan blade 18 drives the connecting shaft 17 to rotate, and the connecting shaft 17 drives the connecting disc 19 to rotate simultaneously. The connecting disc 19 extends with a plurality of connecting rods 20, and the plurality of connecting rods 20 are uniformly arranged around the axis of the connecting disc 19. The filter plate 21 is detachably fixedly connected on the connecting rod 20 and the connecting disc 19 through bolts, that is, the filter plate 21 is coaxially arranged with the connecting disc 19, so that the filter plate 21 is connected together with the connecting disc 19 to form an integral whole, so as to rotate simultaneously with the connecting shaft 17, and the filter plate 21 is connected and limited by the connecting rod 20, so that the connecting disc 19 and the filter plate 21 are on the same horizontal plane, so that the high-temperature and high-pressure steam passing through the filter box 10 is filtered by the filter plate 21. The end face of the filter plate 21 close to the driving fan blade 18 is provided with a filter membrane, which is a ceramic filter membrane, so that the filter membrane is supported and limited by the filter plate 21, so as to filter the high-temperature and high-pressure steam more carefully by the filter membrane, remove the trace condensate in the high-temperature and high-pressure steam, and ensure that the steam passing through the filter box 10 is cleaner. The outer end face of the filter plate 21 is provided with a third clamping ring groove 22, and the second sealing ring 23 is clamped in the third clamping ring groove 22, so that the second sealing ring 23 is clamped and limited by the third clamping ring groove 22 to avoid being separated from the filter plate 21, so as to block the gap between the filter plate 21 and the inner wall of the filter box 10 by the second sealing ring 23, avoid the high-temperature and high-pressure steam leaking from the gap between the filter plate 21 and the inner wall of the filter box 10, and not affect the rotation of the filter plate 21 relative to the filter box 10.

[0028] Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6The inner side wall of the filter box 10 is detachably fixedly connected with the positioning rod 24 through bolts, so that the positioning rod 24 is connected together with the inner wall of the filter box 10 to form an integral whole, and is detachably connected for convenient later disassembly and maintenance. The positioning rod 24 is detachably fixedly connected with the positioning connector 25 through bolts, so that the positioning connector 25 is connected together with the positioning rod 24, and then connected together with the inner wall of the filter box 10, so as to realize the connection and limitation of the positioning rod 24 to the positioning connector 25. The positioning connector 25 is welded with the support cylinder 26, so that the support cylinder 26 is connected together with the positioning connector 25 to form an integral whole. The support cylinder 26 is slidably connected with the telescopic rod 27, so that the telescopic rod 27 can slide in the support cylinder 26, and the support cylinder 26 is connected together with the telescopic rod 27. The support cylinder 26 is provided with the supporting spring 28, which abuts against the telescopic rod 27, so that the telescopic rod 27 is provided with elastic force by the supporting spring 28, and the length of the telescopic rod 27 extending out of the support cylinder 26 is the longest under the action of the elastic force of the supporting spring 28. The telescopic rod 27 is detachably fixedly connected with the scraper 29 at one end outside the support cylinder 26 through bolts, so that the scraper 29 is connected together with the telescopic rod 27 to form an integral whole. The support cylinder 26 and the telescopic rod 27 are of non-circular structure, avoiding rotation of the telescopic rod 27 relative to the support cylinder 26, so as to cause relative rotation of the scraper 29. The scraper 29 abuts against the outer surface of the filter membrane, so that the condensed water on the filter membrane is scraped off by the scraper 29, avoiding accumulation of the condensed water on the filter membrane, affecting rapid passage of high-temperature and high-pressure steam through the filter membrane, and enabling the condensed water scraped off by the scraper 29 to flow along the scraper 29 to the bottom of the filter box 10.

[0029] Referring to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The bottom of the filter box 10 is provided with a blowdown hole 30, so as to facilitate discharge of the condensed water gathered at the bottom of the filter box 10 out of the filter box 10 through the blowdown hole 30. The outer bottom of the filter box 10 at the blowdown hole 30 is sealingly welded with a second blowdown pipe 31 communicated with the blowdown hole 30, so as to guide discharge of the condensed water discharged from the blowdown hole 30 through the second blowdown pipe 31. The second blowdown pipe 31 is communicated with a second valve 32, so as to control opening and closing of the second blowdown pipe 31 through the second valve 32. The outer bottom of the filter box 10 is detachably fixedly connected with a plurality of second support legs 33 through bolts, so that the plurality of second support legs 33 are connected together with the bottom of the filter box 10, thereby supporting the filter box 10 through the second support legs 33, so that the filter box 10 can be separated from the ground. The bottom of the second support leg 33 is welded or detachably fixedly connected with a support bottom plate 34, so as to increase the contact area of the second support leg 33 with the ground through the support bottom plate 34, thereby enabling the filter box 10 to stand more stably on the ground through the second support leg 33.

[0030] Referring to Figure 1 , Figure 6 , Figure 7 , the outlet of the steam turbine 39 is connected with the steam supplement assembly through the third gas conveying pipe 41, so that the low-pressure steam which is reduced in pressure and temperature by passing through the steam turbine 39 is conveyed into the steam supplement assembly through the third gas conveying pipe 41, and the production of the low-pressure steam is increased by the way of water supplement. The steam supplement assembly comprises a steam supplement tank 42, a water storage tank 54, an atomizer 58 and a water pump 57, the sidewall of the steam supplement tank 42 is connected with the third gas inlet pipe 43 and the third gas outlet pipe 44, the third gas inlet pipe 43 is connected with the outlet of the steam turbine 39 through the third gas conveying pipe 41, so that the low-pressure steam discharged from the outlet of the steam turbine 39 enters into the steam supplement tank 42 through the third gas conveying pipe 41 and the third gas inlet pipe 43, and then is discharged through the third gas outlet pipe 44 after water is supplemented in the tank to increase the amount of the low-pressure steam. The top of the steam supplement tank 42 is detachably fixedly connected with the water storage tank 54 through the connecting frame, and the steam supplement tank 42 is connected with the water storage tank 54 through the water conveying pipe, so that the steam supplement tank 42 and the water conveying pipe are connected together to form an integral whole, and of course, the two can also be separately arranged, so that the water storage tank 54 provides water for the steam supplement tank 42. The connecting frame comprises an upper connecting ring 49, a lower connecting ring 48 and a plurality of supporting rods 50, the upper connecting ring 49 and the lower connecting ring 48 are respectively detachably fixedly connected with the water storage tank 54 and the steam supplement tank 42 through bolts, so that the upper connecting ring 49 and the lower connecting ring 48 are connected together to form an integral whole with the water storage tank 54 and the steam supplement tank 42 respectively. The plurality of supporting rods 50 are uniformly welded or detachably fixedly connected with the upper connecting ring 49 and the lower connecting ring 48 through bolts, so that the upper connecting ring 49 and the lower connecting ring 48 are connected together to form an integral whole through the plurality of supporting rods 50, thereby connecting the steam supplement tank 42 and the water storage tank 54 together to form an integral whole.

[0031] Referring to Figure 1 , Figure 6 , Figure 7The water delivery pipe is communicated with a one-way valve 53, which facilitates controlling the flow direction of water in the water delivery pipe through the one-way valve 53, and avoids steam in the steam supplement tank 42 from entering the water storage tank 54 through the gas delivery pipe. The water delivery pipe includes an upper pipe 51 and a lower pipe 52, and the one-way valve 53 is arranged between the upper pipe 51 and the lower pipe 52. The upper pipe 51 is in communication with the water storage tank 54, and the lower pipe 52 is in communication with the steam supplement tank 42, so that the opening and closing direction in the water delivery pipe is controlled through the one-way valve 53, thereby avoiding the steam in the steam supplement tank 42 from entering the water storage tank 54. The one-way valve 53 includes a valve body 101, a blocking head 102, and a positioning spring 104. The valve body 101 is provided with a water inlet hole 108 and a water outlet hole 107 at both ends. The water inlet hole 108 and the water outlet hole 107 are connected and communicated with 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 water inlet hole 108, and then is delivered to the steam supplement tank 42 through the water outlet hole 107 and the lower pipe 52. The valve body 101 is provided with an expansion hole communicating the water inlet hole 108 and the water outlet hole 107. The blocking head 102 and the positioning spring 104 are arranged in the expansion hole, and the both ends of the positioning spring 104 abut against the inner bottom of the expansion hole and the blocking head 102 respectively, so that the blocking head 102 is partially inserted into the water inlet hole 108 under the action of the elastic force of the positioning spring 104, thereby blocking the water inlet hole 108. The side end face of the blocking head 102 extends a plurality of lengthening rods 103, so as to increase the width of the blocking head 102 through the lengthening rods 103, and to reduce the gap between the blocking head 102 and the expansion hole as much as possible, thereby facilitating water to be discharged from the water outlet hole 107 through the expansion hole. The end face of the blocking head 102 close to the water inlet hole 108 is clamped with a sealing head 106 made of high-temperature-resistant rubber material, so as to achieve more stringent blocking of the water inlet hole 108 through the sealing head 106. The blocking head 102 extends a clamping head 105 with a mushroom-shaped vertical section, and the sealing head 106 is provided with a clamping groove with a mushroom-shaped vertical section. The clamping head 105 is clamped in the clamping groove, so as to achieve clamping connection of the blocking head 102 and the sealing head 106 through the clamping head 105 and the clamping groove, thereby avoiding the clamping head 105 from being separated from the blocking head 102.

[0032] Referring to Figure 1 , Figure 6 , Figure 7The water pipe is connected with the atomizer 58 in the steam supplement tank 42, and the water in the steam supplement tank 42 enters the atomizer 58 through the telescopic rod 27 to be atomized, so that the water is converted into low-pressure steam under the heat of the low-pressure steam, thereby increasing the total amount of the low-pressure steam. The top opening of the water storage tank 54 is detachably connected with the tank cover 55 through bolts, and a sealing gasket is arranged between the tank cover 55 and the water storage tank 54, so that the opening of the water storage tank 54 is sealed through the tank cover 55 and the sealing gasket, thereby ensuring the sealing of the water storage tank 54, and the inside of the water storage tank 54 is convenient to clean and maintain through the detachable connection. The tank cover 55 is communicated with the water inlet pipe 56, so that the water storage tank 54 is convenient to add water through the water inlet pipe 56. The water pump 57 is detachably fixedly connected on the tank cover 55 through bolts, so that the water pump 57 is connected with the tank cover 55 to form an integral whole. The water inlet pipe 56 is communicated with the water outlet of the water pump 57, so that the water is pumped by the water pump 57 and transported into the water storage tank 54 through the water inlet pipe 56, and the water storage tank 54 is provided with pressure through the water pump 57, so that the water in the water storage tank 54 is convenient to be transported into the steam supplement tank 42 through the one-way valve 53. The bottom of the steam supplement tank 42 is communicated with the drain pipe 45, so that the water gathered at the bottom of the steam supplement tank 42 is convenient to be drained through the drain pipe 45. The drain pipe 45 is communicated with the third valve 46, so that the opening and closing of the drain pipe 45 is convenient to be controlled through the third valve 46. The bottom outer end surface of the steam supplement tank 42 is detachably fixedly connected with a plurality of third supporting legs 47 through bolts, so that the plurality of third supporting legs 47 are connected with the steam supplement tank 42 to form an integral whole, thereby the steam supplement tank 42 is supported through the third supporting legs 47, so that the steam supplement tank 42 is separated from the ground.

[0033] In use, first, the high pressure and high temperature steam generated by the kiln work is transported into the separation cylinder 2 through the first inlet pipe 1, the high pressure and high temperature steam forms a spiral airflow through the spiral guide vanes 5, the condensate in the high pressure and high temperature steam is separated by centrifugal method, then is discharged through the first outlet pipe 9, and is transported into the filter box 10 through the first gas conveying pipe 37 and the second inlet pipe 35, the high temperature and high pressure steam drives the driving fan blade 18 to rotate in the filter box 10, the driving fan blade 18 drives the connecting disc 19 and the filter plate 21 to rotate through the connecting shaft 17, so that the high pressure and high temperature steam is filtered through the filter membrane on the filter plate 21, and is discharged through the second outlet pipe 36, in the process of rotating the filter plate 21, the scraper 29 scrapes the condensate on the filter membrane to avoid the condensate accumulated on the filter membrane, which blocks the filter membrane and affects the speed of the high temperature and high pressure steam passing through the filter membrane, the high temperature and high pressure steam discharged from the second outlet pipe 36 is transported into the steam turbine 39 through the second gas conveying pipe 38 to reduce the temperature and pressure, and the energy in the process is converted into kinetic energy to drive the output shaft of the steam turbine 39 to rotate, the output shaft of the steam turbine 39 drives the generator to rotate to generate electricity, the generated electricity is transported back to the enterprise internal cable or external circuit for use through the booster and stabilizer, the low pressure steam discharged from the steam turbine 39 is transported into the steam supplement tank 42 through the third gas conveying pipe 41 and the third inlet pipe 43, at this time, the water pump 57 is electrified to work, supplement water to the water storage tank 54 and increase the pressure in the water storage tank 54, the water is transported into the steam supplement tank 42 through the one-way valve 53, the atomizer 58 forms atomized water beads, the atomized water beads vaporize into low pressure steam under the action of the heat of the steam, so as to increase the amount of low pressure steam.

[0034] Part of the generated electric energy is used for driving the air separation device to operate, and air is separated into gas products such as oxygen, nitrogen and argon, and liquid products such as liquid oxygen, liquid nitrogen and liquid argon, part of the separated oxygen is used for oxygen-enriched coal injection combustion of the boiler to improve the combustion efficiency of the boiler, reduce coal consumption and pollutant emission, and the remaining nitrogen and other gases can be sold to increase the income of the enterprise; another part is used for electrolyzing water to produce hydrogen, the electric energy is converted into chemical energy stored in hydrogen by the water electrolysis device, the produced hydrogen is mixed with coal powder or natural gas, and the oxygen-enriched combustion technology is combined to be used in industrial production, and the closed-loop energy system utilization method is realized by being mixed with natural gas or coal powder to realize energy-saving combustion, since the hydrogen has high combustion efficiency, and the oxygen-enriched environment can promote more complete combustion, thereby reducing energy consumption and pollutant emission; in addition, the generated low-pressure steam is transported to the industrial park to meet the steam demand of enterprises in the industrial park, and the low-pressure steam is stably supplied to each enterprise in the industrial park through a pipeline transportation system for production processes, heating and the like.

[0035] In the above embodiments, the device elements are conventional device elements unless otherwise specified, and the structure setting mode, working mode or control mode are conventional setting mode, working mode or control mode unless otherwise specified.

[0036] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A system for reusing waste energy in furnaces and kilns, characterized in that, It includes a cyclone separator for centrifugally separating 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 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 (39), and the steam replenishment assembly in sequence. The output shaft of the steam turbine (39) is connected to the rotating shaft of the generator set (40).

2. The furnace waste energy reuse system 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 reuse system according to claim 1, characterized in that, The filter assembly includes a filter box (10), with a cover (11) connected to the opening of the filter box (10). A first bearing (15) and a second bearing (16) are respectively connected to the inner end faces of the filter box (10) and the cover (11). A connecting shaft (17) is interference-fitted inside the first bearing (15) and the second bearing (16). A drive fan blade (18) and a connecting plate (19) are connected to the connecting shaft (17). Several connecting rods (20) extend from the connecting plate (19). A filter plate (21) is connected to the connecting rods (20) and the connecting plate (19). A filter membrane is provided on the end face of the filter plate (21) near the drive fan blade (18). The end face of the filter box (10) away from the cover (11) is connected to the first bearing (15) and the second bearing (16). Two air inlets (35), a second air outlet (36) is connected to the cover (11), the second air inlet (35) is connected to the cyclone separator assembly, the second air outlet (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, a drain hole (30) is provided at the bottom of the filter box (10), a second drain pipe (31) connected to the drain hole (30) is connected to the outer bottom of the filter box (10), a second valve (32) is connected to the second drain pipe (31), a number of second support legs (33) are connected to the outer bottom of the filter box (10), and a support base plate (34) is connected to the bottom of the second support legs (33).

4. A furnace waste energy reuse system according to claim 3, 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 reuse system according to claim 3, characterized in that, The filter box (10) has a plurality of first snap-fit ​​ring grooves (12) on its open end face, and the box cover (11) has a plurality of second snap-fit ​​ring grooves (13) corresponding to the first snap-fit ​​ring grooves (12). A first sealing ring (14) is snapped into the first snap-fit ​​ring groove (12) and the second snap-fit ​​ring groove (13). A third snap-fit ​​ring groove (22) is opened on the outer end face of the filter plate (21), and a second sealing ring (23) is snapped into the third snap-fit ​​ring groove (22).

6. A furnace waste energy reuse system 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).

7. A furnace waste energy reuse system according to claim 6, 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).

8. A furnace waste energy recycling system according to claim 6, 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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