A system for uninterrupted utilization of escaping heat from a roaster
By collecting and converting the heat from high-temperature flue gas through a continuous heat recovery system for roasting furnace escape, the problems of heat waste and safety hazards during the cooling process of roasting furnace are solved, achieving efficient energy utilization and safe production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN WANRUI CARBON
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-23
Smart Images
Figure CN224398360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of prebaked anode production equipment, specifically a system for the uninterrupted utilization of heat escaped from a roasting furnace. Background Technology
[0002] The final step in the production of prebaked anodes is roasting. Existing anode roasting furnaces mainly use periodic indirect heat exchange to heat the green anodes. During the roasting process, the green anodes to be heated are preheated, heated, held, and cooled sequentially according to a specific temperature rise curve, and finally the prebaked anodes are packaged and discharged.
[0003] The roasting furnace used for roasting green anodes includes multiple chambers. During the roasting process, each chamber cycles through preheating, heating, holding, cooling, and unloading in sequence.
[0004] Currently, the cooling process primarily relies on forced draft fans to blow cold air into the flues of the furnace chamber to be cooled, indirectly reducing the temperature of the prebaked anodes at high temperatures. After heat exchange with the flue walls, the temperature of the cold air rises to approximately 600-700℃. However, this heat is directly discharged into the roasting workshop, failing to be utilized effectively. This not only results in a significant waste of heat but also pollutes the workshop environment, and the high temperature of the hot air poses potential safety hazards. Summary of the Invention
[0005] To address the aforementioned issues, this application provides a continuous heat recovery system for roasting furnaces, which can effectively solve the problems of heat waste, environmental pollution, and safety hazards associated with existing roasting furnaces.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A system for uninterrupted utilization of escaped heat from a roasting furnace includes a heat-using unit and a first main pipe;
[0008] The first main pipeline is connected to the fire channels of each furnace chamber of the roasting furnace through the first branch pipeline, and each of the first branch pipelines is equipped with a first control valve.
[0009] A second control valve is installed at the flue gas outlet of each chamber of the roasting furnace.
[0010] The heat-using unit includes a heating system;
[0011] The heating system includes a first heat exchanger, and the first main pipeline is connected to the primary side inlet of the first heat exchanger through a first heating pipeline;
[0012] The secondary inlet of the first heat exchanger is connected to the return water port of the heating equipment through the second heating pipeline, and a first circulating pump is installed on the second heating pipeline. The secondary outlet of the first heat exchanger is connected to the inlet of the heating equipment through the third heating pipeline.
[0013] Furthermore, the heating system also includes a water supply tank, which is connected to the second heating pipeline via a fourth heating pipeline, and a water supply pump is installed on the fourth heating pipeline.
[0014] Furthermore, two water supply pumps are connected in parallel on the fourth heating pipeline, the water supply tank is provided with an inlet connected to a water source, the lower end of the water supply tank is provided with a drain outlet, the drain outlet is provided with a second heating valve, and the upper end of the water supply tank is provided with an overflow outlet.
[0015] Furthermore, two first circulation pumps are connected in parallel on the second heating pipeline, and a first fan is installed on the first heating pipeline.
[0016] Furthermore, the heating unit also includes a domestic water system, which includes a second heat exchanger. The first main pipeline is connected to the primary inlet of the second heat exchanger via a first water pipeline, and the secondary inlet of the second heat exchanger is connected to the secondary outlet of the second heat exchanger via a second water pipeline. A water storage tank, a water inlet, and a second circulation pump are sequentially arranged along the flow direction on the second water pipeline.
[0017] Furthermore, two second circulation pumps are connected in parallel on the second water pipeline.
[0018] Furthermore, a second temperature sensor is installed on the water storage tank.
[0019] Furthermore, a water supply pipe is provided on the second water supply pipe between the secondary side inlet and the water inlet of the second heat exchanger, a second water supply valve is provided on the water supply pipe, and a third temperature sensor is provided on the second water supply pipe between the water supply pipe and the water inlet.
[0020] Furthermore, a second fan is installed on the first water supply pipeline.
[0021] Furthermore, it also includes a second main pipeline, which is connected to the fire channels of each furnace chamber of the roasting furnace through second branch pipelines. Each of the second branch pipelines is equipped with a third control valve. The primary side outlets of the first heat exchanger and the second heat exchanger are respectively connected to the second main pipeline.
[0022] The beneficial effects of this utility model are:
[0023] 1. The uninterrupted utilization system for escape heat of a roasting furnace provided in this application embodiment can efficiently collect the high-temperature flue gas generated during the cooling process and convert the heat it carries into usable water-based thermal energy. This not only achieves efficient collection and utilization of escape heat, effectively reducing energy waste and improving energy utilization efficiency, but also avoids the direct discharge of high-temperature hot air into the roasting workshop, reducing disorderly heat dissipation, lowering the temperature inside the workshop, improving the working environment, and reducing potential safety hazards caused by high-temperature hot air in the workshop, such as burns and fires. This provides a safer working environment for production personnel and ensures the safe and stable operation of the production process.
[0024] 2. The calcining furnace escape heat utilization system provided in this application embodiment can be modified only by modifying the relevant road equipment without changing the original structure of the calcining furnace. This avoids large-scale modification of the furnace body structure, reduces modification costs and construction difficulty, reduces interference with the production process, and ensures the normal operation and production efficiency of the calcining furnace.
[0025] 3. The embodiment of this application provides a continuous heat utilization system for roasting furnaces. Since the roasting furnace includes many furnace chambers, in actual operation, although each furnace chamber is carried out in a cycle of preheating, heating, heat preservation, cooling and loading, it can ensure that there is a furnace chamber in the cooling stage at any time period, thus ensuring the continuity and stability of the heat supply and heat exchange process. This provides a more reliable and stable heat energy supply for production and further improves the operating efficiency and energy utilization benefits of the entire roasting furnace system. Attached Figure Description
[0026] Figure 1 This is a system diagram of a continuous utilization system for escaped heat from a roasting furnace, provided in an embodiment of this application.
[0027] In the diagram: 1. First main pipeline; 11. First branch pipeline; 12. First control valve;
[0028] 2. Roasting furnace; 21. Furnace chamber;
[0029] 3. Heating system; 31. First heat exchanger; 321. First heating pipeline; 322. Second heating pipeline; 323. Third heating pipeline; 324. Fourth heating pipeline; 325. Fifth heating pipeline; 33. First circulating pump; 34. Makeup water tank; 341. Inlet pipeline; 342. First heating valve; 343. Drain outlet; 344. Second heating valve; 345. Overflow outlet; 35. Makeup water pump; 36. First fan; 37. First temperature sensor; 38. First pressure sensor;
[0030] 4. Domestic water system; 41. Second heat exchanger; 421. First water supply pipeline; 422. Second water supply pipeline; 423. Third water supply pipeline; 43. Water storage tank; 44. Water inlet; 441. First water supply valve; 45. Second circulation pump; 461. Second pressure sensor; 462. Third pressure sensor; 471. Second temperature sensor; 472. Third temperature sensor; 48. Water supply pipeline; 481. Second water supply valve; 49. Second fan;
[0031] 5. Second main pipeline; 51. Second branch pipeline; 52. Third control valve. Detailed Implementation
[0032] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.
[0033] like Figure 1 As shown, a continuous heat utilization system for a roasting furnace includes a heat-using unit and a first main pipe 1. The first main pipe 1 is connected to the flue of each chamber 21 of the roasting furnace 2 via first branch pipes 11. Each first branch pipe 11 is equipped with a first control valve 12. The roasting furnace 2 has a first inlet that mates with the first branch pipe 11. The first branch pipe 11 is inserted into the corresponding first inlet and sealed to it. A second control valve (not shown in the figure) is installed at the exhaust port of each chamber 21 of the roasting furnace 2.
[0034] The roasting furnace 2 includes blowers (not shown in the figure) that correspond one-to-one with the furnace chamber 21. The blowers are equipment that is originally present in the roasting furnace 2 and are used to blow cold air into the fire channel of the furnace chamber 21 to be cooled during the cooling process, so as to cool the prebaked anode in a high-temperature state through indirect heat exchange.
[0035] The first inlet and the blower, corresponding to one of the chambers 21 of the roasting furnace 2, are located at opposite ends of the chamber 21.
[0036] During operation, the second control valve at the flue gas outlet of the furnace chamber 21, which is in the cooling process, is closed. At this time, the cold air blown in by the blower cannot be discharged from the flue gas outlet. Instead, it undergoes heat exchange along the entire length of the flue gas in the furnace chamber 21 before entering the first main pipe 1 through the first branch pipe 11. This not only improves the cooling efficiency but also increases the temperature of the output high-temperature flue gas, thus providing a high-quality heat source for subsequent processes.
[0037] The heat-using unit includes a heating system 3.
[0038] The heating system 3 includes a first heat exchanger 31. The first main pipeline 1 is connected to the primary inlet of the first heat exchanger 31 via a first heating pipeline 321. The secondary inlet of the first heat exchanger 31 is connected to the return water inlet of the heating equipment via a second heating pipeline 322, and a first circulating pump 33 is installed on the second heating pipeline 322. The secondary outlet of the first heat exchanger 31 is connected to the inlet of the heating equipment via a third heating pipeline 323.
[0039] Furthermore, the heating system 3 also includes a water supply tank 34, the outlet of which is connected to the second heating pipeline 322 via a fourth heating pipeline 324. The access point of the fourth heating pipeline 324 is located upstream of the first circulating pump 33 (i.e., the inlet side of the first circulating pump 33), and a water supply pump 35 is installed on the fourth heating pipeline 324.
[0040] Furthermore, two water replenishment pumps 35 are installed on the fourth heating pipeline 324, and the two water replenishment pumps 35 are connected in parallel on the fourth heating pipeline 324 to achieve one for backup and one for use.
[0041] Furthermore, the water supply tank 34 is provided with a water inlet, which is connected to a water source (such as tap water) through a water inlet pipe 341, and a first heating valve 342 is provided on the water inlet pipe 341 for controlling the opening and closing of the water inlet pipe 341.
[0042] Furthermore, a drain outlet 343 is provided at the lower end of the water supply tank 34, and a second heating valve 344 is provided on the drain outlet 343. When it is necessary to clean or repair the water supply tank 34, the water in the water supply tank 34 can be drained by opening the second heating valve 344 on the drain outlet 343.
[0043] Furthermore, the upper end of the water supply tank 34 is provided with an overflow port 345. When the water level in the water supply tank 34 reaches the overflow port 345, excess water can overflow through the overflow port 345, thereby preventing the water level in the water supply tank 34 from being too high.
[0044] Furthermore, the second heating pipeline 322 is equipped with two first circulation pumps 33, and the two first circulation pumps 33 are connected in parallel on the second heating pipeline 322 to achieve one for backup and one for use.
[0045] Furthermore, since the roasting furnace 2 is relatively large, the corresponding first main pipe 1 is relatively long. In order to enable the high-temperature flue gas to smoothly enter the primary side of the first heat exchanger 31, a first fan 36 is installed on the first heating pipe 321. The first fan 36 can transport the high-temperature flue gas in the first main pipe 1 to the primary side of the first heat exchanger 31.
[0046] Furthermore, a first temperature sensor 37 and a first pressure sensor 38 are provided on both the second heating pipeline 322 and the third heating pipeline 323, and the first temperature sensor 37 and the first pressure sensor 38 provided on the second heating pipeline 322 are located at the return water inlet of the heating equipment.
[0047] As one specific implementation, the first heat exchanger 31 described in this embodiment is a tubular heat exchanger.
[0048] The heating unit also includes a domestic water system 4.
[0049] The domestic water system 4 includes a second heat exchanger 41. The first main pipeline 1 is connected to the primary inlet of the second heat exchanger 41 via a first water supply pipeline 421. The secondary inlet of the second heat exchanger 41 is connected to the secondary outlet of the second heat exchanger 41 via a second water supply pipeline 422. A water storage tank 43, a water inlet 44, and a second circulation pump 45 are sequentially arranged along the water flow direction on the second water supply pipeline 422. Under the action of the second circulation pump 45, water flows out from the water storage tank 43, undergoes heat exchange in the second heat exchanger 41, and then returns to the water storage tank 43, thus achieving circulating heating. A first water supply valve 441 is installed on the water inlet 44.
[0050] Furthermore, two second circulation pumps 45 are installed on the second water supply pipeline 422, and the two second circulation pumps 45 are connected in parallel on the second water supply pipeline 422 to achieve one for backup and one for use.
[0051] Furthermore, a second pressure sensor 461 is provided on the second water pipe 422 upstream of the water storage tank 43, and a second temperature sensor 471 for detecting the temperature inside the water storage tank 43 is provided on the water storage tank 43.
[0052] Furthermore, a water supply pipe 48 is provided on the second water supply pipe 422 between the secondary side inlet and the water inlet 44 of the second heat exchanger 41. One end of the water supply pipe 48 is connected to a water source (e.g., tap water), and the other end is connected to the second water supply pipe 422. A second water valve 481 for controlling the on / off state of the water supply pipe 48 is provided on the water supply pipe 48. A third temperature sensor 472 is provided on the second water supply pipe 422 between the water supply pipe 48 and the water inlet 44.
[0053] During operation, the third temperature sensor 472 uploads the detected temperature to the control unit (not shown in the figure). The control unit controls the operating state of the fifth control valve (opening or closing the fifth control valve; if the fifth control valve is open, the control unit controls the opening time of the fifth control valve) based on the temperature feedback from the third temperature sensor 472. When the temperature feedback from the third temperature sensor 472 does not reach the preset temperature, the fifth control valve is closed; if the temperature feedback from the third temperature sensor 472 is higher than the preset temperature, the control unit controls the opening time of the fifth control valve based on the difference between the temperature feedback from the third temperature sensor 472 and the preset temperature, thereby injecting a certain amount of cold water, so that the temperature of the water passing through the second heat exchanger 41 is suitable for water usage requirements.
[0054] In one specific implementation, the water supply pipe 48 and the third temperature sensor 472 described in this embodiment are located on both sides of the second circulation pump 45.
[0055] Furthermore, a third pressure sensor 462 is installed on the second water supply pipe 422 between the water supply pipe 48 and the water inlet 44.
[0056] Furthermore, since the roasting furnace 2 is relatively large, the corresponding first main pipe 1 is relatively long. In order to enable the high-temperature flue gas to smoothly enter the primary side of the second heat exchanger 41, a second fan 49 is installed on the first water pipe 421. The second fan 49 can transport the high-temperature flue gas in the first main pipe 1 to the primary side of the second heat exchanger 41.
[0057] As one specific implementation, the second heat exchanger 41 described in this embodiment is a tubular heat exchanger.
[0058] Furthermore, a system for uninterrupted utilization of escaped heat from a roasting furnace also includes a second main pipe 5. The second main pipe 5 is connected to the fire channels of each furnace chamber 21 of the roasting furnace 2 via second branch pipes 51, and each second branch pipe 51 is equipped with a third control valve 52. The primary side outlet of the first heat exchanger 31 is connected to the second main pipe 5 via a fifth heating pipe 325. The primary side outlet of the second heat exchanger 41 is connected to the second main pipe 5 via a third water pipe 423.
[0059] The roasting furnace 2 is provided with a second inlet that cooperates with the second branch pipe 51. The second branch pipe 51 is inserted into the corresponding second inlet and is sealed to the second inlet.
[0060] During operation, the second and third control valves 52 of the furnace chamber 21 in the preheating process are opened, and the first control valve 12 is closed. The heat of the flue gas passing through the first heat exchanger 31 and the second heat exchanger 41 is absorbed and turned into low-temperature flue gas. The low-temperature flue gas enters the flue of the furnace chamber 21 in the preheating process. After preheating the furnace chamber 21, it enters the flue gas treatment equipment through the exhaust fan at the flue gas exhaust port, thereby treating the flue gas in an environmentally friendly manner.
[0061] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.
[0062] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.
Claims
1. A system for uninterrupted utilization of escaped heat from a roasting furnace, characterized in that: Includes the heat-using unit and the first main pipe (1); The first main pipe (1) is connected to the fire passage of each furnace chamber (21) of the roasting furnace (2) through the first branch pipe (11), and each of the first branch pipes (11) is equipped with a first control valve (12). A second control valve is installed at the flue gas outlet of each furnace chamber (21) of the roasting furnace (2); The heat-using unit includes a heating system (3); The heating system (3) includes a first heat exchanger (31), and the first main pipeline (1) is connected to the primary side inlet of the first heat exchanger (31) through a first heating pipeline (321); The secondary side inlet of the first heat exchanger (31) is connected to the return water port of the heating equipment through the second heating pipeline (322), and the second heating pipeline (322) is equipped with a first circulating pump (33). The secondary side outlet of the first heat exchanger (31) is connected to the inlet of the heating equipment through the third heating pipeline (323).
2. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 1, characterized in that: The heating system (3) further includes a water supply tank (34), which is connected to the second heating pipeline (322) via a fourth heating pipeline (324), and a water supply pump (35) is installed on the fourth heating pipeline (324).
3. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 2, characterized in that: Two water supply pumps (35) are connected in parallel on the fourth heating pipeline (324). The water supply tank (34) is provided with an inlet, which is connected to a water source. The lower end of the water supply tank (34) is provided with a drain outlet (343). The drain outlet (343) is provided with a second heating valve (344). The upper end of the water supply tank (34) is provided with an overflow outlet (345).
4. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 1, characterized in that: Two first circulating pumps (33) are connected in parallel on the second heating pipeline (322), and a first fan (36) is installed on the first heating pipeline (321).
5. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 1, characterized in that: The heat-using unit also includes a domestic water system (4), which includes a second heat exchanger (41). The first main pipeline (1) is connected to the primary inlet of the second heat exchanger (41) through a first water pipeline (421). The secondary inlet of the second heat exchanger (41) is connected to the secondary outlet of the second heat exchanger (41) through a second water pipeline (422). A water storage tank (43), a water inlet (44), and a second circulation pump (45) are sequentially arranged along the flow direction on the second water pipeline (422).
6. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 5, characterized in that: Two second circulating pumps (45) are connected in parallel on the second water pipeline (422).
7. A continuous utilization system for escaped heat from a roasting furnace according to claim 5, characterized in that: The water storage tank (43) is equipped with a second temperature sensor (471).
8. The uninterrupted utilization system for escaped heat from a roasting furnace according to claim 7, characterized in that: A water supply pipe (48) is provided on the second water supply pipe (422) between the secondary side inlet and the water inlet (44) of the second heat exchanger (41). A second water supply valve (481) is provided on the water supply pipe (48). A third temperature sensor (472) is provided on the second water supply pipe (422) between the water supply pipe (48) and the water inlet (44).
9. A continuous utilization system for escaped heat from a roasting furnace according to claim 5, characterized in that: A second fan (49) is installed on the first water supply pipeline (421).
10. A system for uninterrupted utilization of escaped heat from a roasting furnace according to claim 1, characterized in that: It also includes a second main pipe (5), which is connected to the fire channel of each furnace chamber (21) of the roasting furnace (2) via a second branch pipe (51). Each of the second branch pipes (51) is equipped with a third control valve (52). The primary side outlets of the first heat exchanger (31) and the second heat exchanger (41) are connected to the second main pipe (5).