Waste heat recycling device

Abstract

The utility model provides a waste heat recycling device, and relates to the technical field of waste heat recovery, the waste heat recycling device comprises a heat exchange box, a partition plate is arranged in the heat exchange box, the partition plate divides the interior of the heat exchange box into a filter chamber and a heat exchange chamber from left to right, a smoke inlet pipe communicated with the filter chamber is arranged on one side of the heat exchange box, and a heat exchange pipe is arranged in the heat exchange chamber; a smoke outlet pipe is fixedly arranged on one side of the heat exchange box, one end of the heat exchange pipe extends into the filtering chamber, the other end of the heat exchange pipe extends out of the heat exchange box and is communicated with the smoke outlet pipe, a water inlet pipe and a water outlet pipe which are communicated with the heat exchange chamber are arranged on the heat exchange box, and a filtering assembly is arranged in the filtering chamber. After heat exchange in the heat exchange chamber, the smoke enters the next treatment process from the smoke outlet pipe, so that impurity particles in the smoke are effectively prevented from entering and accumulating in the heat exchange pipe to reduce the heat exchange effect, and the normal operation of the device is prevented from being influenced by the blockage of the heat exchange pipe.

Description

Technical Field

[0001] This application relates to the technical field of waste heat recovery, and more particularly, to a waste heat recovery and utilization device. Background Art

[0002] A waste heat recovery and utilization device is a device that can effectively collect and utilize the waste heat generated in the industrial production process. It helps to improve energy utilization efficiency, reduce the energy consumption and production costs of enterprises, reduce the dependence on traditional energy, and contribute to the achievement of sustainable development goals.

[0003] In the process of coal power generation, the heat energy generated by burning coal in the boiler is used to heat water into steam. The steam drives the steam turbine to rotate, and then drives the generator to generate electricity. The flue gas generated by the boiler is treated by dust removal, desulfurization, denitrification, etc., and then sent to the waste heat recovery and utilization device for waste heat recovery.

[0004] However, in the prior art, the dust removal effect of the boiler flue gas is not good. After the boiler flue gas is treated, it still contains some impurity particles. These impurity particles are likely to accumulate in the heat exchange tubes of the waste heat recovery and utilization device, reducing the heat exchange effect. In the long run, it will cause the heat exchange tubes to be blocked, affecting the normal operation of the device. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide a waste heat recovery and utilization device, which can solve the technical problems that the impurity particles in the boiler flue gas enter the heat exchange tubes and accumulate, reducing the heat exchange effect, and in the long run, it will cause the heat exchange tubes to be blocked, affecting the normal operation of the device.

[0006] The embodiments of this application provide a waste heat recovery and utilization device, including a heat exchange box. A partition plate is arranged in the heat exchange box. The partition plate divides the interior of the heat exchange box from left to right into a filtration chamber and a heat exchange chamber. An inlet flue is arranged on one side of the heat exchange box and is communicated with the filtration chamber. Heat exchange tubes are arranged in the heat exchange chamber. An outlet flue is fixedly arranged on one side of the heat exchange box. One end of the heat exchange tube extends into the filtration chamber, and the other end of the heat exchange tube extends outside the heat exchange box and is communicated with the outlet flue. A water inlet pipe and a water outlet pipe are arranged on the heat exchange box and are communicated with the heat exchange chamber. A filtration component is arranged in the filtration chamber.

[0007] Furthermore, an inspection port communicated with the filtration chamber is arranged at the top of the heat exchange box, and a suitable inspection cover is arranged at the inspection port.

[0008] Furthermore, the filtration component includes a filtration frame and a filter net. The filter net is fixedly arranged on the filtration frame. The filtration frame is fixedly arranged at the bottom of the inspection cover. The filter net is located between the smoke outlet of the inlet flue and the smoke inlet of the heat exchange tube.

[0009] Further, a baffle is fixedly arranged in the filtering chamber. The baffle is provided with a through hole, the size of the through hole is adapted to the filtering rack, the filtering rack is inserted into the through hole, a first sealing ring is arranged between the baffle and the filtering rack, and the first sealing ring is fixedly arranged on the filtering rack.

[0010] Further, a cleaning assembly is further included. The cleaning assembly includes a driving motor, a rotating shaft and a cleaning brush. The driving motor is fixedly arranged on the top of the inspection cover. The rotating shaft is rotatably arranged on the filtering rack. The upper end of the rotating shaft penetrates through the inspection cover and is connected to the output shaft of the driving motor. The lower end of the rotating shaft penetrates through the filter net, and the cleaning brush is fixedly arranged at the lower end of the rotating shaft. The bristles of the cleaning brush abut against the bottom of the filter net.

[0011] Further, a plurality of heat exchange tubes are provided, and the plurality of heat exchange tubes are arranged in rows.

[0012] Further, a dust discharge pipe communicating with the filtering chamber is arranged at the bottom of the heat exchange box, and a dust discharge valve is arranged on the dust discharge pipe.

[0013] Further, a bearing and a second sealing ring are arranged between the rotating shaft and the inspection cover, and the second sealing ring is located below the bearing.

[0014] Advantages of the present utility model:

[0015] In the heat exchange box of the present utility model, a partition plate is provided. The partition plate divides the interior of the heat exchange box from left to right into a filtering chamber and a heat exchange chamber. A filtering assembly is arranged in the filtering chamber. The boiler flue gas enters the filtering chamber through the smoke inlet pipe, and after being filtered by the filtering assembly, it enters the heat exchange tubes. After heat exchange in the heat exchange chamber, it enters the next processing procedure through the smoke outlet pipe, effectively avoiding the impurity particles in the flue gas from entering the heat exchange tubes and accumulating to reduce the heat exchange effect, and avoiding the blockage of the heat exchange tubes and affecting the normal operation of the device. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of some embodiments of the present application;

[0018] Figure 2 It is a cross-sectional view of some embodiments of the present application;

[0019] Figure 3Schematic structural diagram of the filtering component and the cleaning component in some embodiments of the present application;

[0020] The reference numerals are respectively:

[0021] 1. Heat exchange box; 2. Partition board; 3. Filter chamber; 4. Heat exchange chamber; 5. Smoke inlet pipe; 6. Heat exchange pipe; 7. Smoke outlet pipe; 8. Water inlet pipe; 9. Water outlet pipe; 10. Filtering component; 101. Filter rack; 102. Filter net; 11. Inspection cover; 12. Baffle; 13. First sealing ring; 14. Cleaning component; 141. Driving motor; 142. Rotating shaft; 143. Cleaning brush; 15. Dust exhaust pipe; 16. Dust exhaust valve; 17. Bearing; 18. Second sealing ring. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0024] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0026] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations. Specific embodiments:

[0029] Such as Figure 1 and Figure 2 As shown in the figure, the present application provides a waste heat recovery and utilization device, including a heat exchange box 1. A partition plate 2 is arranged in the heat exchange box 1. The partition plate 2 divides the interior of the heat exchange box 1 from left to right into a filtering chamber 3 and a heat exchange chamber 4. One side of the heat exchange box 1 is provided with a smoke inlet pipe 5 communicating with the filtering chamber 3. Heat exchange pipes 6 are arranged in the heat exchange chamber 4. One side of the heat exchange box 1 is fixedly provided with a smoke outlet pipe 7. One end of the heat exchange pipe 6 extends into the filtering chamber 3, and the other end of the heat exchange pipe 6 extends outside the heat exchange box 1 and communicates with the smoke outlet pipe 7. The heat exchange box 1 is provided with a water inlet pipe 8 and a water outlet pipe 9 communicating with the heat exchange chamber 4. A filtering component 10 is arranged in the filtering chamber 3. Specifically, the water inlet of the water inlet pipe 8 is lower than the water outlet of the water outlet pipe 9. The heat exchange pipes are copper pipes with a wall thickness of 2 mm to improve the heat exchange effect. When in use, cooling water is input into the heat exchange chamber 4 through the water inlet pipe 8. Boiler flue gas enters the filtering chamber 3 through the smoke inlet pipe 5, enters the heat exchange pipes 6 after being filtered by the filtering component 10, and enters the next treatment process through the smoke outlet pipe 7 after heat exchange in the heat exchange chamber 4, effectively preventing impurity particles in the flue gas from entering the heat exchange pipes 6 and accumulating to reduce the heat exchange effect, and preventing the heat exchange pipes 6 from being blocked and affecting the normal operation of the device.

[0030] Such as Figure 1 and Figure 2 As shown in the figure, the top of the heat exchange box 1 is provided with an inspection opening communicating with the filtering chamber 3. An appropriate inspection cover 11 is arranged at the inspection opening. By opening the inspection cover 11, the interior of the filtering chamber 3 can be inspected through the inspection opening. Specifically, the inspection cover 11 is arranged at the inspection opening. By lifting the inspection cover 11 upward, the inspection cover 11 can be separated from the inspection opening. Among them, a sealing rubber ring is fixedly arranged on the inspection cover 11 to prevent boiler flue gas from leaking through the gap between the inspection opening and the inspection cover 11 and causing heat loss.

[0031] Such as Figure 2 and Figure 3As shown in the figure, the filtering component 10 includes a filtering frame 101 and a filtering net 102. The filtering net 102 is fixedly arranged on the filtering frame 101, and the filtering frame 101 is fixedly arranged at the bottom of the inspection cover 11. The filtering net 102 is located between the smoke outlet of the smoke inlet pipe 5 and the smoke inlet of the heat exchange pipe 6. After the boiler flue gas enters the filtering chamber 3 through the smoke inlet pipe 5, it flows upward. After being filtered by the filtering net 102, it then enters the heat exchange pipe 6, which can effectively prevent the impurity particles in the boiler flue gas from entering the heat exchange pipe 6. During inspection, the input of boiler flue gas into the filtering chamber 3 is stopped, and the inspection cover 11 is lifted upward, and the filtering frame 101 and the filtering net 102 can be taken out, which is convenient for inspecting the filtering chamber 3.

[0032] As Figure 2 and Figure 3 shown in the figure, a baffle 12 is fixedly arranged in the filtering chamber 3. The baffle 12 is provided with through holes, and the size of the through holes is adapted to the filtering frame 101. The filtering frame 101 is inserted into the through holes. A first sealing ring 13 is arranged between the baffle 12 and the filtering frame 101, and the first sealing ring 13 is fixedly arranged on the filtering frame 101. Through the arrangement of the baffle 12 and the first sealing ring 13, the boiler flue gas entering the filtering chamber 3 is filtered by the filtering net 102 before entering the heat exchange pipe 6, effectively filtering the boiler flue gas.

[0033] As Figures 1-3 shown in the figure, it further includes a cleaning component 14. The cleaning component 14 includes a driving motor 141, a rotating shaft 142 and a cleaning brush 143. The driving motor 141 is fixedly arranged on the top of the inspection cover 11. The rotating shaft 142 is rotatably arranged on the filtering frame 101. The upper end of the rotating shaft 142 penetrates through the inspection cover 11 and is connected to the output shaft of the driving motor 141. The lower end of the rotating shaft 142 penetrates through the filtering net 102, and the cleaning brush 143 is fixedly arranged at the lower end of the rotating shaft 142. The bristles of the cleaning brush 143 are in contact with the bottom of the filtering net 102. Specifically, the driving motor 141 drives the rotating shaft 142 to rotate, driving the cleaning brush 143 to rotate, and cleaning the filtering net 102 through the bristles of the cleaning brush 143 to prevent the impurity particles in the boiler flue gas from adhering to the filtering net 102 and causing blockage of the filtering net 102.

[0034] As Figure 1 and Figure 2 shown in the figure, there are multiple heat exchange pipes 6, and the multiple heat exchange pipes 6 are arranged in a row. After the boiler flue gas is filtered by the filtering component 10 in the filtering chamber 3, it enters the multiple heat exchange pipes 6, and then exchanges heat with the cooling water in the heat exchange box 1 in the heat exchange box 1, improving the heat exchange efficiency of the boiler flue gas.

[0035] As Figure 2As shown, a dust discharge pipe 15 communicating with the filtration chamber 3 is provided at the bottom of the heat exchange box 1. A dust discharge valve 16 is provided on the dust discharge pipe 15. After the boiler flue gas enters the filtration chamber 3 through the smoke inlet pipe 5, some of the impurity particles in the boiler flue gas converge at the bottom of the filtration chamber 3 under the action of self-gravity, and the remaining impurity particles adhere to the filter net 102 after passing through the filter net 102. Then, under the action of the cleaning assembly 14, they fall off from the filter net 102 to the bottom of the filtration chamber 3. By opening the dust discharge valve 16, the impurity particles in the filtration chamber 3 can be discharged.

[0036] As Figure 2 shown, a bearing 17 and a second sealing ring 18 are provided between the rotating shaft 142 and the inspection cover 11. The second sealing ring 18 is located below the bearing 17. The setting of the bearing 17 reduces the friction coefficient during the rotation of the rotating shaft 142, facilitating the rotation of the rotating shaft 142. The setting of the second sealing ring 18 can prevent the boiler flue gas from leaking out through the gap between the inspection cover 11 and the bearing 17, avoiding heat loss.

[0037] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A waste heat recovery and utilization device, characterized in that: It includes a heat exchange box, a partition plate is arranged inside the heat exchange box, and the partition plate divides the interior of the heat exchange box from left to right into a filtration chamber and a heat exchange chamber. A smoke inlet pipe communicated with the filtration chamber is arranged on one side of the heat exchange box. Heat exchange pipes are arranged in the heat exchange chamber. A smoke outlet pipe is fixedly arranged on one side of the heat exchange box. One end of the heat exchange pipe extends into the filtration chamber, and the other end of the heat exchange pipe extends outside the heat exchange box and is communicated with the smoke outlet pipe. A water inlet pipe and a water outlet pipe communicated with the heat exchange chamber are arranged on the heat exchange box. A filtration component is arranged in the filtration chamber.

2. The waste heat recovery and utilization device according to claim 1, characterized in that: An inspection port communicated with the filtration chamber is arranged on the top of the heat exchange box, and a suitable inspection cover is arranged at the inspection port.

3. The waste heat recovery and utilization device according to claim 2, characterized in that: The filtration component includes a filtration rack and a filter screen. The filter screen is fixedly arranged on the filtration rack, and the filtration rack is fixedly arranged at the bottom of the inspection cover. The filter screen is located between the smoke outlet of the smoke inlet pipe and the smoke inlet of the heat exchange pipe.

4. The waste heat recovery and utilization device according to claim 3, wherein: A baffle is fixedly arranged in the filtration chamber, and through holes are arranged on the baffle. The size of the through holes is adapted to the filtration rack, and the filtration rack is inserted into the through holes. A first sealing ring is arranged between the baffle and the filtration rack, and the first sealing ring is fixedly arranged on the filtration rack.

5. The waste heat recovery and utilization device according to claim 3, characterized in that: It further includes a cleaning component. The cleaning component includes a driving motor, a rotating shaft and a cleaning brush. The driving motor is fixedly arranged on the top of the inspection cover. The rotating shaft is rotatably arranged on the filtration rack. The upper end of the rotating shaft penetrates through the inspection cover and is connected with the output shaft of the driving motor. The lower end of the rotating shaft penetrates through the filter screen, and the cleaning brush is fixedly arranged at the lower end of the rotating shaft. The bristles of the cleaning brush are abutted against the bottom of the filter screen.

6. The waste heat recovery and utilization device according to claim 1, characterized in that: There are multiple heat exchange pipes, and the multiple heat exchange pipes are arranged in rows.

7. An apparatus for recovering and utilizing waste heat according to claim 1, wherein: A dust discharge pipe communicated with the filtration chamber is arranged at the bottom of the heat exchange box, and a dust discharge valve is arranged on the dust discharge pipe.

8. The waste heat recovery and utilization device according to claim 5, characterized in that: A bearing and a second sealing ring are arranged between the rotating shaft and the inspection cover, and the second sealing ring is located below the bearing.

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