Surface air cooler heat recovery device
By designing a heat exchange component in the meter cooler, the low-temperature air and high-temperature flue gas are heat exchanged, which solves the problem of waste of heat resources in the prior art, and achieves heat recovery and energy efficiency improvement.
Patent Information
- Application Number
- CN202421306932.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Existing meter coolers directly convert heat from high-temperature flue gas into ambient air, resulting in increased ambient temperature and waste of heat resources.
A meter cooler heat recovery device is designed to exchange heat with low-temperature air and high-temperature flue gas through a heat exchange assembly to form heating gas and supply heat energy use equipment.
The recovery of heat energy in high-temperature flue gas has been achieved, which reduces environmental thermal pollution, improves energy utilization efficiency, and reduces energy consumption and operating costs.
Smart Images
Figure CN222688854U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas heat recovery, in particular to a heat recovery device for a surface cooler. Background Art
[0002] At present, the smelting industry mostly uses thermal reduction method, also known as pyrometallurgy, for some metals with general activity. For some rare or easily molten metal minerals, roasting is mostly used to mix the metal in the flue gas after roasting, and then the flue gas temperature is reduced by waste heat boiler and surface cooler, and then the ash containing the target metal is extracted by dust collection system to obtain crude metal products. In this process, the existing surface cooler is a metal pipe exposed to the air. When the high-temperature flue gas (300~800℃) from the waste heat boiler is passed into the metal pipe, the heat in the high-temperature flue gas is exchanged with the air, thereby reducing the output flue gas temperature of the surface cooler (100~200℃). Although the temperature of the flue gas can be reduced by the surface cooler, this heat is converted to the ambient air, which causes the ambient temperature to rise and the maintenance expenditure of the anti-corrosion coating of the surface cooler to increase a lot. At the same time, after the heat is directly converted to the ambient air, it is not reused, resulting in a waste of resources. Utility Model Content
[0003] In order to solve the problem in the prior art that the surface cooler directly converts the heat energy in the high-temperature flue gas into the ambient air, causing the ambient temperature to rise, and this part of the energy is not reused, resulting in a waste of resources, the utility model provides a heat recovery device for the surface cooler.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] The utility model discloses a heat recovery device for a surface cooler, comprising a smoke passage component, wherein the smoke passage component is used for passing high-temperature smoke;
[0006] The smoke venting component is connected to a heat exchange component, and the heat exchange component is externally connected to a heat energy using device;
[0007] The heat exchange component includes a heat recovery box, and the heat recovery box is installed on the smoke vent component;
[0008] The heat recovery box is provided with an air inlet and an air vent, and the air vent is provided with an air entrainment component and the heat energy utilization device. The air entrainment component is used to create suction to draw air into the heat recovery box, exchange heat with the high-temperature flue gas in the smoke vent component, and form heated gas to be passed into the heat energy utilization device for use.
[0009] Preferably, a plurality of partitions are arranged in the heat recovery box, and the plurality of partitions form an air passage between the air inlet and the air vent.
[0010] Preferably, an exhaust port is provided on the top of the heat recovery box, and a chimney is provided on the exhaust port.
[0011] Preferably, a sail gate is provided on the exhaust port.
[0012] Preferably, a plurality of partitions are arranged in the heat recovery box, and the plurality of partitions form an air passage.
[0013] Preferably, a filter screen is provided on the air inlet.
[0014] Preferably, the air induced component is an induced draft fan.
[0015] Preferably, the smoke vent assembly comprises an ash receiving hopper, a mounting plate is provided at the upper end of the ash receiving hopper, an air duct is installed on the mounting plate, and the air duct is located between the two partitions in the heat recovery box, and the air duct is communicated with the interior of the ash receiving hopper;
[0016] The ash receiving hopper is provided with a smoke inlet and a smoke exhaust port. The smoke inlet is used to allow high-temperature smoke to enter, and then pass through the air guide pipe and be discharged from the smoke exhaust port.
[0017] Preferably, a working platform is provided on the ash receiving hopper at the side of the heat recovery box.
[0018] Preferably, a support column is provided on the ash receiving hopper, and a support foot block is provided at the bottom of the support column. Compared with the prior art, the utility model has the following beneficial technical effects:
[0019] The utility model discloses a heat recovery device for a surface cooler. In the device, a heat exchange component is used to allow the introduced low-temperature air to exchange heat with the high-temperature flue gas in the smoke-venting component, thereby realizing the recovery of heat energy in the high-temperature flue gas, avoiding direct heat emission, reducing thermal pollution to the environment, supplying the recovered heat energy to heat energy-using equipment, reducing dependence on traditional energy, effectively improving energy utilization efficiency, reducing energy consumption, lowering operating costs, and being conducive to promoting green and low-carbon energy development.
[0020] Furthermore, in the heat exchange component of the device, the air outside the heat recovery box is sucked into the heat recovery box through the air entrainment component, and the air is exchanged with the flue gas in the air duct, and then transported to the heat energy using equipment through the air entrainment component for use, so that the air intake and transportation process is automated and continuous, and the need for manual operation is reduced. The operator only needs to monitor the operating status of the equipment to ensure the normal operation of the air entrainment component and the heat exchange component, thereby reducing the work intensity of the staff; at the same time, it also reduces the demand for external energy, reduces energy consumption, reduces direct heat emissions, and reduces thermal pollution to the environment.
[0021] Furthermore, in the present device, a plurality of partitions are arranged in the heat recovery box, and an air channel is formed in the heat recovery box through the plurality of partitions, so that the air introduced by the air intake assembly through the air inlet is gradually heated during the flow along the air channel, and the heat carried by the high-temperature flue gas is transferred to the air in the heat recovery box, so that the heat exchange between the air and the flue gas is more complete.
[0022] Furthermore, the device is provided with a chimney on the heat recovery box, through which the air bleed assembly can dissipate heat when not working, thereby ensuring the safety of the heat recovery box.
[0023] Furthermore, in the smoke-venting assembly of the device, a smoke inlet and a smoke exhaust port are arranged on the ash hopper, and the high-temperature smoke enters the ash hopper through the smoke inlet, and then exchanges heat with the air in the heat recovery box through the air duct, thereby lowering the temperature of the smoke, reducing the thermal pollution of the smoke to the environment, and reducing the difficulty and cost of subsequent treatment or discharge.
[0024] Furthermore, the device is provided with a support column on the ash receiving hopper, and a support foot block is provided at the bottom of the support column, which can ensure that the ash receiving hopper remains stable during use and prevent safety accidents caused by tilting or moving of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the front cross-sectional structure of a heat recovery device for a surface cooler provided by the utility model;
[0026] Figure 2 for Figure 1 Cross-sectional view at AA in the middle;
[0027] Figure 3 This is one of the side structural schematic diagrams of the heat recovery device for the surface cooler provided by the utility model;
[0028] Figure 4 This is the second side structural schematic diagram of the heat recovery device for the surface cooler provided by the utility model;
[0029] Figure 5A rear structural schematic diagram of a heat recovery device for a surface cooler provided by the utility model;
[0030] In the attached figure: 1. ash hopper; 10. smoke inlet; 11. ash cleaning port; 12. cover; 13. smoke exhaust port; 2. support column; 3. working platform; 4. heat recovery box; 40. partition; 41. chimney; 42. vent; 43. filter; 5. sail gate; 6. induced draft fan; 7. air duct; 8. support foot block. DETAILED DESCRIPTION
[0031] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0036] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0037] See also Figure 1~Figure 5 The utility model discloses a heat recovery device for a surface cooler, which includes a smoke ventilation component, which is used to pass high-temperature smoke; the smoke ventilation component is connected to a heat exchange component, and the heat exchange component is externally connected to a heat energy using device; the heat exchange component is used to pass low-temperature air, which exchanges heat with the high-temperature smoke in the smoke ventilation component, to form heated gas, which is passed into the heat energy using device for use, and then the heat in the high-temperature smoke can be transferred to the air through the device, the low-temperature air is heated to obtain high-temperature air, and then the high-temperature air is input into the heat using device for use, thereby reducing the pollution of the smoke to the air.
[0038] See also Figure 1~Figure 5 The smoke-passing assembly includes an ash receiving hopper 1, and a plurality of ash receiving hoppers 1 are provided and arranged in a row. A mounting plate is provided on the upper end surfaces of the plurality of ash receiving hoppers 1, and the upper end surfaces of the plurality of ash receiving hoppers 1 are formed into a mounting platform through the mounting plate. An air guide pipe 7 is installed on the upper end surface of the mounting plate. The air guide pipe 7 is a U-shaped pipe, and the air guide pipe 7 is installed between two adjacent ash receiving hoppers 1, and one port of the air guide pipe 7 is connected to the inside of one ash receiving hopper 1, and the other port of the air guide pipe 7 is connected to the other ash receiving hopper 1. The two ash receiving hoppers 1 are adjacent, so that after the smoke is introduced from the ash receiving hopper 1 on the far side, the smoke in the ash receiving hopper 1 needs to enter the adjacent ash receiving hopper 1 through the air guide pipe 7, circulate in sequence, and be discharged from the ash receiving hopper 1 on the other side of the smoke-passing assembly;
[0039] A smoke inlet 10 is disposed on one end surface of each ash receiving hopper 1, and a smoke exhaust port 13 is disposed on the other end surface. The smoke exhaust port 13 and the smoke inlet 10 are symmetrically disposed about the vertical center line of the ash receiving hopper 1, see Figure 1, multiple ash hoppers 1 are arranged in sequence from the left end to the right end of the smoke ventilation component, and among two adjacent ash hoppers 1, the smoke inlet 10 of one ash hopper 1 is connected to the smoke exhaust port 13 of the ash hopper 1 on its left side, the smoke inlet 10 of the ash hopper 1 located on the far left is connected to the smoke exhaust port of the waste heat boiler, and the smoke exhaust port 13 of the ash hopper 1 located on the far right is not connected to the equipment, and then the high-temperature flue gas entering from the ash hopper 1 at the far left end of the smoke ventilation component enters the adjacent ash hopper 1 through the air duct 7, and then enters the next ash hopper 1 through the air duct 7 again, and is cooled step by step, so that the temperature of the flue gas discharged from the smoke exhaust port 13 on the ash hopper 1 at the far right end of the smoke ventilation component is reduced to normal temperature. At the same time, the dust in the high-temperature flue gas can be deposited in the ash hopper 1 through the air duct 7, and the high-temperature flue gas is filtered, so that the discharged gas has less impact on the atmosphere.
[0040] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 A support column 2 is vertically arranged on the outer side end surface of each ash receiving hopper 1, and a support foot block 8 is arranged at the bottom of the support column 2, which is in contact with the ground through the support foot block 8, and the ash receiving hopper 1 is lifted up in cooperation with the support column 2, which is convenient for the maintenance and cleaning of the ash receiving hopper 1.
[0041] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The ash receiving hopper 1 is provided with a cleaning port 11, which can facilitate the cleaning of the ash receiving hopper 1. The ash receiving hopper 1 is provided with an entry hole on the side of the cleaning port 11. The entry hole can facilitate cleaning personnel to enter the interior of the ash receiving hopper 1 for cleaning during equipment maintenance, so that the ash receiving hopper 1 can be cleaned more cleanly. A sealing cover 12 is provided on the entry hole for sealing the entry hole.
[0042] See also Figure 1~Figure 5 The heat exchange component includes a heat recovery box 4, which is made of carbon ceramic, or made of reinforced concrete, masonry, resin and other materials combined with thermal insulation materials, and a thermal insulation layer is arranged on the outside of the heat recovery box 4. The heat recovery box 4 is installed on the upper end surface of the mounting plate, and the air guide pipe 7 is located inside the heat recovery box 4;
[0043] A vent 42 is provided on the heat recovery box 4 at one side of the smoke outlet connected to the waste heat boiler on its ash hopper 1, and an air inlet is provided on one side of the smoke outlet 13 on the ash hopper 1 on the far right of the smoke vent assembly; an air bleed assembly and heat energy utilization equipment are provided on the air vent 42, and the air bleed assembly is used to create suction, so that external air enters the heat recovery box 4 through the air inlet, and then is introduced into the heat energy utilization equipment through the air vent 42 to be supplied to the heat energy utilization equipment. The heat energy utilization equipment includes a raw material drying system or a side-blowing furnace chamber, and the raw material drying system or the side-blowing furnace chamber uses a high-temperature gas pipeline to connect the vent 42; the air bleed assembly is an induced draft fan 6, which creates suction in the heat recovery box 4 through the induced draft fan 6, and sucks air outside the heat recovery box 4 into the heat recovery box 4, and sends it to the heat energy utilization equipment after heating.
[0044] See also Figure 1~Figure 5 An exhaust port is arranged at the top of the heat recovery box 4 near its left end surface, and a chimney 41 is arranged on the exhaust port. The chimney 41 can facilitate the discharge of gas when the gas pressure in the heat recovery box 4 is too high, thereby improving the safety of the equipment.
[0045] See also Figure 1 The exhaust port is provided with a sailboard gate 5, which is closed when the air bleed assembly is working. If the air bleed assembly stops working, the sailboard gate 5 is opened, and the high-temperature gas in the heat recovery box 4 is discharged through the chimney 41 to dissipate the heat of the heat recovery box 4, thereby improving the heat dissipation efficiency of the heat recovery box 4.
[0046] See also Figure 1 A plurality of partitions 40 are vertically arranged in the heat recovery box 4, and the plurality of partitions 40 are spaced apart on the bottom end surface and the top end surface of the heat recovery box 4. An air passage is formed between the vent 42 and the air inlet in the heat recovery box 4, and an air guide pipe 7 is provided between two adjacent partitions 40. The air entering through the air inlet is gradually heated during the flow along the air passage, and the heat carried by the high-temperature flue gas is transferred to the air in the heat recovery box 4, so that the air flowing out of the vent 42 is within a certain temperature range and supplied to the heat energy using equipment, thereby saving fuel and reducing the emission of greenhouse gases such as carbon dioxide.
[0047] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 A filter screen 43 is provided on the air inlet, and the filter screen 43 is used to filter the air entering the air inlet to prevent large particles of dust in the air from entering the heat recovery box 4.
[0048] See also Figure 1~Figure 5A working platform 3 is provided on the ash hopper 1 at the side of the heat recovery box 4. The working platform 3 can provide a standing position for the staff during the maintenance and overhaul of the device, so as to facilitate the staff to maintain and overhaul the equipment.
[0049] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0050] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the utility model, and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.
Claims
1. Heat recovery device for surface cooler, characterized in that: It includes a smoke venting component, and the smoke venting component is used to let in high-temperature smoke; The smoke venting component is connected to a heat exchange component, and the heat exchange component is externally connected to a heat energy using device; The heat exchange component comprises a heat recovery box (4), and the heat recovery box (4) is mounted on the smoke venting component; The heat recovery box (4) is provided with an air inlet and an air vent (42), the air vent (42) is provided with an air inlet assembly and the heat energy utilization device, the air inlet assembly is used to generate suction to draw air into the heat recovery box (4), perform heat exchange with the high-temperature flue gas in the smoke vent assembly, and form heated gas to be passed into the heat energy utilization device for use.
2. The heat recovery device for surface cooler according to claim 1, characterized in that: A plurality of partitions (40) are arranged in the heat recovery box (4), and the plurality of partitions (40) form an air passage between the air inlet and the air vent (42).
3. The heat recovery device for surface cooler according to claim 1, characterized in that: The top of the heat recovery box (4) is provided with an exhaust port, and a chimney (41) is provided on the exhaust port.
4. The heat recovery device for surface cooler according to claim 3, characterized in that: A sail gate (5) is provided on the exhaust port.
5. The heat recovery device for surface cooler according to claim 1, characterized in that: A plurality of partitions are arranged in the heat recovery box (4), and the plurality of partitions form an air passage.
6. The heat recovery device for surface cooler according to claim 1, characterized in that: A filter screen (43) is provided on the air inlet.
7. The heat recovery device for surface cooler according to claim 1, characterized in that: The air induced component is an induced draft fan (6).
8. The heat recovery device for surface cooler according to claim 2, characterized in that: The smoke vent assembly comprises an ash receiving hopper (1), a mounting plate is provided at the upper end of the ash receiving hopper (1), an air guide pipe (7) is installed on the mounting plate, and the air guide pipe (7) is located between the two partitions (40) in the heat recovery box (4), and the air guide pipe (7) is communicated with the interior of the ash receiving hopper (1); The ash receiving hopper (1) is provided with a smoke inlet (10) and a smoke exhaust port (13); the smoke inlet (10) is used to allow high-temperature smoke to enter, and then pass through the air guide pipe (7) and be discharged from the smoke exhaust port (13).
9. The heat recovery device for surface cooler according to claim 8, characterized in that: A working platform (3) is provided on the ash receiving hopper (1) at the side of the heat recovery box (4).
10. The surface cooler heat recovery device according to claim 8, characterized in that: A support column (2) is provided on the ash receiving hopper (1), and a support foot block (8) is provided at the bottom of the support column (2).