Fluidized bed boiler capable of reducing inlet smoke temperature
By designing cone box and cooling box structures in a vulcanized bed boiler, the inlet smoke temperature is reduced by cooling water and heat dissipation fin balls, the problem of excessive smoke temperature in the inlet smoke temperature of the vulcanized bed boiler is solved, extending the service life of the boiler and reducing high temperature pollution .
Patent Information
- Application Number
- CN202323553246.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-26
AI Technical Summary
During the use of existing vulcanized bed boilers, the inlet smoke temperature is too high, resulting in deformation of the steam outlet and environmental pollution, reducing the service life of the boiler.
Design a structure including a boiler, a cone box and a cooling box. The cone box contains cooling water and heat dissipation fin balls, and the cooling box contains hollow copper tubes and fins, which contact the cooling water and heat dissipation fin balls through flue gas. , increase the contact area and cooling efficiency of the flue gas, and gradually reduce the inlet smoke temperature.
It effectively reduces the smoke temperature at the top of the boiler, extends the service life of the boiler, reduces high-temperature pollution, and improves the smoke temperature cooling efficiency.
Smart Images
Figure CN222164774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fluidized bed boilers, in particular to a fluidized bed boiler capable of reducing inlet smoke temperature. Background Art
[0002] Fluidized bed boilers are indispensable industrial smelting equipment in the current industrial economy. Fluidized bed boilers will produce nitrogen oxides during the combustion process. Nitrogen oxides are an important pollution factor affecting the quality of the atmospheric environment, and steam boilers are one of the main sources of nitrogen oxide emissions. Therefore, nitrogen oxide pollution control work is carried out for enterprises with steam boilers.
[0003] During the use of existing fluidized bed boilers, the smoke temperature at the steam inlet is too high, which can easily cause the steam outlet at the inlet to deform. At the same time, the inlet smoke temperature is too high, resulting in high-temperature steam discharge causing pollution, increasing the ambient temperature and reducing the service life of the boiler.
[0004] Therefore, those skilled in the art provide a fluidized bed boiler with reduced inlet flue gas temperature to solve the problems raised in the above background technology. Utility Model Content
[0005] The utility model aims to provide a fluidized bed boiler with reduced inlet smoke temperature, so as to solve the problem of excessively high inlet smoke temperature of the existing fluidized bed boiler proposed in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A fluidized bed boiler for reducing inlet smoke temperature comprises: a boiler, wherein the top of the boiler is also provided with an outlet, and the bottom of the outlet is integrally connected with a cone box, and a cooling box is installed below the cone box;
[0008] The inner wall of the cone box is equipped with an atomizing nozzle, and a heat dissipation fin ball is arranged in the middle of the cone box. The surface of the cone box is provided with an inlet, and a filter plate is installed on the inner side of the inlet. The outer wall of the cone box is fixedly connected with a heat dissipation ring sheet.
[0009] A hollow copper tube is installed inside the cooling box, and a perforated plate is embedded and installed at the bottom of the cooling box, and fins are installed on the inner surface of the perforated plate.
[0010] As a further solution of the utility model, a steam pipe is connected to the top of the outlet, a circulating water pipe is installed on one side of the steam pipe, and a pneumatic valve for opening and closing the pipeline is installed on the surface of the steam pipe.
[0011] As a further solution of the utility model, the outlet, the cone box and the cooling box are all located on the same straight line, and the cooling box and the top of the boiler are embedded and installed, and a sealing ring gasket for sealing is provided between the cooling box and the boiler.
[0012] As a further solution of the utility model, a plurality of heat dissipation ring sheets are arranged at equal intervals along the outer wall surface of the cone box, and the bottom diameter of the cone box is larger than the diameter of the heat dissipation fin ball.
[0013] As a further solution of the utility model, the outer shape of the cooling box is a conical structure that is narrow at the top and wide at the bottom, and a plurality of hollow copper tubes are distributed in a concentric ring shape inside the cooling box.
[0014] As a further solution of the utility model, the cooling box is connected to the inside of the boiler through a perforated plate at the bottom, and the fins are distributed in a ring shape about the symmetrical center line of the perforated plate.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. An outlet is installed on the top of the boiler. The outlet and the cone box are integrated structures. Cooling water is placed in the cone box. When steam enters the cone box and the outlet, the smoke temperature and steam temperature can be cooled down, and the smoke temperature at the top inlet of the boiler is reduced. The bottom of the cone box is conical and fits with the top of the cooling box, but they do not match. A gap is reserved between them for smoke circulation. The smoke will first enter the interior of the cone box from the cooling box, further reducing the smoke temperature, facilitating discharge, and reducing high-temperature pollution.
[0017] 2. A cooling box is installed inside the boiler. Several hollow copper tubes are distributed inside the cooling box. At the same time, fins are set at the bottom of the cooling box. The setting of fins and hollow copper tubes can increase the contact area with the flue gas, accelerate heat dissipation, and help cool the flue gas, thereby reducing the flue gas temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of a fluidized bed boiler for reducing the inlet flue gas temperature.
[0019] Figure 2 The schematic diagram is a structural diagram of a fluidized bed boiler cooling box and outlet for reducing the inlet flue gas temperature.
[0020] Figure 3 A fluidized bed boiler for reducing inlet flue gas temperature Figure 2 A is an enlarged structural diagram of FIG.
[0021] Figure 4 The diagram is a bottom view of a cooling box in a fluidized bed boiler for reducing the inlet flue gas temperature.
[0022] Figure 5The diagram is a front view of the structure of a cooling box and an outlet in a fluidized bed boiler for reducing the inlet flue gas temperature.
[0023] Figure 6 The schematic diagram is a decomposed structure of a cooling box in a fluidized bed boiler for reducing the inlet flue gas temperature.
[0024] In the figure: 1. boiler; 2. outlet; 3. steam pipe; 4. circulating water pipe; 5. pneumatic valve; 6. cone box; 601. atomizing nozzle; 602. cooling fin ball; 603. filter plate; 604. cooling ring; 605. inlet; 7. cooling box; 701. orifice plate; 702. fin; 8. hollow copper tube; 9. sealing gasket. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] See also Figure 1 to Figure 6 The embodiment of the utility model provides a fluidized bed boiler for reducing inlet smoke temperature, comprising: a boiler 1, an outlet 2 is installed on the top of the boiler 1, and a cone box 6 is integrally connected to the bottom of the outlet 2, and a cooling box 7 is installed below the cone box 6;
[0027] Specifically, an outlet 2, a cone box 6 and a cooling box 7 are installed on the top of the boiler 1. When the flue gas rises in the boiler, it will pass through the cooling box 7, the cone box 6 and the outlet 2 one by one, thereby reducing the flue gas temperature in turn.
[0028] An atomizing nozzle 601 is installed on the inner wall of the cone box 6, and a heat dissipation fin ball 602 is arranged in the middle of the cone box 6. An inlet 605 is arranged on the surface of the cone box 6, and a filter plate 603 is installed on the inner side of the inlet 605. A heat dissipation ring sheet 604 is fixedly connected to the outer wall of the cone box 6.
[0029] Specifically, cooling water is poured into the interior of the cone box 6. When the smoke enters the interior of the cone box 6 from the inlet 605, it will come into contact with the cooling water inside the cone box 6, and the heat dissipation fin ball 602 will be affected by the cooling water, increasing the contact area between the smoke and the cooling water, thereby accelerating the cooling. The atomizing nozzle 601 is connected to the interior of the cone box 6, and atomization cooling can be performed inside the cone box 6.
[0030] A hollow copper tube 8 is installed inside the cooling box 7, and a perforated plate 701 is embedded and installed at the bottom of the cooling box 7. Fins 702 are installed on the inner surface of the perforated plate 701. The outer shape of the cooling box 7 is a conical structure that is narrow at the top and wide at the bottom. A number of hollow copper tubes 8 are distributed in a concentric ring shape inside the cooling box 7. The cooling box 7 is connected to the inside of the boiler 1 through the perforated plate 701 at the bottom, and the fins 702 are distributed in a ring shape about the symmetrical center line of the perforated plate 701.
[0031] Specifically, a plurality of groups of hollow copper tubes 8 are arranged inside the cooling box 7, and the hollow copper tubes 8 are used to increase the contact area between the flue gas and the cooling box 7 to accelerate the cooling. During the rising process inside the boiler, the flue gas will pass through the orifice plate 701 and enter the interior of the cooling box 7. The inner wall of the orifice plate 701 is installed with fins 702. The fins 702 will increase the contact area of the flue gas and improve the efficiency of reducing the flue gas temperature.
[0032] A steam pipe 3 is connected to the top of the outlet 2, a circulating water pipe 4 is installed on one side of the steam pipe 3, and a pneumatic valve 5 for opening and closing the pipe is installed on the surface of the steam pipe 3; specifically, a steam pipe 3 is provided on the outlet 2, and excessively high smoke temperature may cause deformation at the inlet of the steam pipe 3. At the same time, the smoke temperature of the smoke discharged through the steam pipe 3 is too high, which may easily cause pollution problems. Therefore, before the smoke enters the steam pipe 3, it will pass through the cooling box 7 and the cone box 6 in advance, and will be discharged from the steam pipe 3 after the smoke temperature is reduced. The circulating water pipes 4 are grouped in two, one of which is a water inlet pipe and the other is a water outlet pipe, one inlet and one outlet, which are used to replace the cooling water inside the cone box 6, so that the cooling water inside the cone box 6 circulates to improve the cooling efficiency.
[0033] The outlet 2, the cone box 6 and the cooling box 7 are all located on the same straight line, and the cooling box 7 is installed in an interlocking manner with the top of the boiler 1, and a sealing ring gasket 9 for sealing is provided between the cooling box 7 and the boiler 1; specifically, the outlet 2, the cone box 6 and the cooling box 7 are arranged on the same straight line, which is conducive to allowing the flue gas to pass through the cooling box 7 and the cone box 6 in sequence during the rising process, and then enter the steam pipe 3 connected to the outlet 2, so that the smoke temperature of the flue gas can be gradually reduced and cooled.
[0034] Several heat dissipation ring sheets 604 are arranged at equal intervals along the outer wall surface of the cone box 6, and the bottom diameter of the cone box 6 is larger than the diameter of the heat dissipation fin ball 602; specifically, the heat dissipation ring sheets 604 are arranged on the outer wall of the cone box 6 to increase the contact area between the flue gas and the outer wall of the cone box 6, which is beneficial to heat dissipation. The cone box 6 is filled with cooling water and the heat dissipation fin ball 602 is also placed inside to improve the cooling efficiency.
[0035] The working principle of the utility model is:
[0036] When the utility model is used, the flue gas will enter from the bottom of the cooling box 7 during the rising process inside the boiler 1. The bottom of the cooling box 7 is provided with a perforated plate 701. The flue gas enters the interior of the cooling box 7 through the perforated plate 701. After entering the interior of the cooling box 7, the flue gas will contact the fins 702 and the hollow copper tubes 8. A plurality of fins 702 and the hollow copper tubes 8 will increase the contact area between the flue gas and the air and accelerate the heat dissipation. Secondly, the flue gas flows out from the top of the cooling box 7. There is a gap between the top of the cooling box 7 and the cone box 6, so that the flue gas can enter between the cooling box 7 and the cone box 6, and enter the interior of the cone box 6 from the inlet 605 provided at the bottom of the cone box 6. The circulating water pipes 4 are in a group of two, one of which is an inlet pipe and the other is an outlet pipe, one in and one out, and cooling water is injected into the interior of the cone box 6 through the inlet pipe. When the flue gas enters the interior of the cone box 6 from the inlet 605, it will contact with the cooling water inside the cone box 6, and the heat dissipation fin ball 602 will be affected by the cooling water, increasing the contact area between the flue gas and the cooling water, accelerating the cooling, and the atomizing nozzle 601 is connected to the inside of the cone box 6, which can be atomized and cooled in the flue gas inside the cone box 6, and then the flue gas enters the steam pipe 3 connected to the outlet 2, and the pneumatic valve 5 on the steam pipe 3 is opened, which is conducive to the outflow of the flue gas after the smoke temperature is reduced.
[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A fluidized bed boiler for reducing inlet flue gas temperature, comprising: A boiler (1), characterized in that an outlet (2) is installed at the top of the boiler (1), and a cone box (6) is integrally connected to the bottom of the outlet (2), and a cooling box (7) is installed below the cone box (6); An atomizing nozzle (601) is installed on the inner wall of the cone box (6), and a heat dissipation fin ball (602) is arranged in the middle of the cone box (6). An inlet (605) is arranged on the surface of the cone box (6), and a filter plate (603) is installed on the inner side of the inlet (605). A heat dissipation ring sheet (604) is fixedly connected to the outer wall of the cone box (6); A hollow copper tube (8) is installed inside the cooling box (7), and a perforated plate (701) is embedded and installed at the bottom of the cooling box (7), and fins (702) are installed on the inner surface of the perforated plate (701).
2. A fluidized bed boiler for reducing inlet flue gas temperature according to claim 1, characterized in that: The top of the outlet (2) is connected to a steam pipe (3), a circulating water pipe (4) is installed on one side of the steam pipe (3), and a pneumatic valve (5) for opening and closing the pipeline is installed on the surface of the steam pipe (3).
3. A fluidized bed boiler for reducing inlet flue gas temperature according to claim 1, characterized in that: The outlet (2), the cone box (6) and the cooling box (7) are all located on the same straight line, and the cooling box (7) and the top of the boiler (1) are embedded in each other, and a sealing ring gasket (9) for sealing is provided between the cooling box (7) and the boiler (1).
4. A fluidized bed boiler for reducing inlet flue gas temperature according to claim 1, characterized in that: A plurality of heat dissipation ring sheets (604) are arranged at equal distances along the outer wall surface of the cone box (6), and the bottom diameter of the cone box (6) is greater than the diameter of the heat dissipation fin ball (602).
5. A fluidized bed boiler for reducing inlet flue gas temperature according to claim 1, characterized in that: The outer shape of the cooling box (7) is a conical structure that is narrow at the top and wide at the bottom, and a plurality of hollow copper tubes (8) are distributed in a concentric ring shape inside the cooling box (7).
6. A fluidized bed boiler for reducing inlet flue gas temperature according to claim 1, characterized in that: The cooling box (7) is connected to the interior of the boiler (1) through a perforated plate (701) at the bottom, and the fins (702) are distributed in a ring shape about a symmetrical center line of the perforated plate (701).