Circulating combustion device of boiler

Abstract

The utility model provides a boiler circulating combustion device, and relates to the technical field of boilers, the boiler circulating combustion device comprises a boiler main body, a smoke outlet of the boiler main body is connected with a circulating mechanism, the circulating mechanism comprises a cyclone separator main body, an air inlet pipe of the cyclone separator main body communicates with the smoke outlet of the boiler main body, and the circulating mechanism is used for separating smoke from solid particles; the device is used for recycling solid particles and achieving circulating combustion of the solid particles. The cyclone separator main body is arranged at the smoke outlet of the boiler main body, the cyclone separator main body can separate solid particles which are not completely combusted in gas, and the separated solid particles can be put into the boiler main body again to be circularly combusted, so that heat contained in the particles is fully utilized; the heat efficiency of a boiler system is remarkably improved, the using amount of new fuel is reduced for circulating combustion of solid particles, and the energy cost is further saved.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and more specifically, to a boiler circulating combustion device. Background Technology

[0002] In the process of energy conversion and utilization, the boiler, as the core equipment for heat energy generation, has a combustion efficiency that is directly related to the degree of effective energy utilization and environmental sustainability. Although modern boilers have been optimized in design and operation, it is still difficult to achieve 100% complete combustion of fuel in the furnace.

[0003] When fuel fails to burn completely, flue gas containing unburned solid particles is produced. These particles are mainly composed of unburned combustible components and still have the potential to continue burning. Directly introducing this type of flue gas into dust removal equipment for purification and then releasing it into the atmosphere would not only waste the combustible energy contained in these solid particles but also reduce the overall thermal efficiency of the boiler. Therefore, we have made improvements and proposed a boiler circulating combustion device. Summary of the Invention

[0004] The purpose of this invention is to address the problem of unburned solid particles not being effectively utilized, resulting in resource waste.

[0005] In order to achieve the above-mentioned objectives, this invention provides a boiler circulating combustion device to improve the above-mentioned problems.

[0006] The application is as follows:

[0007] A boiler circulating combustion device includes a boiler body, and a circulation mechanism is connected to the flue gas outlet of the boiler body. The circulation mechanism includes a cyclone separator body, and the air inlet pipe of the cyclone separator body is connected to the flue gas outlet of the boiler body. The circulation mechanism is used to separate flue gas from solid particles, to recover solid particles, and to realize the circulating combustion of solid particles.

[0008] As a preferred technical solution of this application, the air inlet pipe of the circulation mechanism is connected to a connecting pipe, and the connecting pipe is connected to the flue gas outlet of the boiler body.

[0009] As a preferred technical solution of this application, the exhaust port of the cyclone separator body is connected to an exhaust pipe.

[0010] As a preferred technical solution of this application, the bottom of the cyclone separator body is connected to an isolation feeding section, which is used to transport the solid particles recovered by the cyclone separator body back to the combustion chamber of the boiler body.

[0011] As a preferred technical solution of this application, the isolation feeding section includes a recovery cylinder fixedly connected to the bottom of the cyclone separator body. A bottom plate is fixedly connected to the bottom of the recovery cylinder, and a conveying pipe is fixedly connected to the bottom of the bottom plate. The conveying pipe is connected to the combustion chamber of the boiler body, and a connection port connected to the cyclone separator body is provided on the recovery cylinder.

[0012] As a preferred technical solution of this application, a pusher plate is rotatably connected inside the recycling cylinder.

[0013] As a preferred technical solution of this application, a driving component is provided between the pusher plate and the top of the recycling cylinder, and the driving component is used to drive the pusher plate to rotate.

[0014] As a preferred technical solution of this application, the driving component is a motor, which is installed on the top of the recycling cylinder, and the output shaft of the motor passes through the recycling cylinder and is fixedly connected to the pusher plate.

[0015] As a preferred technical solution of this application, the outer surface of the connecting pipe is provided with a heat recovery structure.

[0016] As a preferred technical solution of this application, the heat recovery structure includes a heat recovery box sleeved on the outer surface of the connecting pipe, and two connecting pipes are fixedly connected to one side of the heat recovery box.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the scheme of this application:

[0019] To address the problem of unburned solid particles not being effectively utilized and causing resource waste in existing technologies, this application introduces a cyclone separator at the flue gas outlet of the boiler body. The cyclone separator can separate unburned solid particles from the gas, and the separated solid particles can be reintroduced into the boiler body for cyclic combustion. This fully utilizes the heat contained in these particles, significantly improving the thermal efficiency of the boiler system. Furthermore, the cyclic combustion of solid particles reduces the amount of new fuel used, further saving energy costs. Attached Figure Description

[0020] Figure 1 A schematic diagram of the boiler circulating combustion device provided in this application;

[0021] Figure 2 A rear view schematic diagram of the boiler circulating combustion device provided in this application;

[0022] Figure 3 A bottom view of the circulating mechanism of the boiler circulating combustion device provided in this application;

[0023] Figure 4A schematic diagram of the pusher plate of the boiler circulating combustion device provided in this application.

[0024] The image shows:

[0025] 1. Boiler body;

[0026] 2. Circulation mechanism; 201. Cyclone separator body; 202. Connecting pipe; 203. Discharge pipe; 204. Recovery cylinder; 205. Connection port; 206. Motor; 207. Push plate; 208. Base plate; 209. Conveying pipe; 3. Heat recovery box; 301. Connecting pipe. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] As described in the background art, when fuel fails to burn completely, flue gas containing unburned solid particles is produced. These solid particles are mainly composed of unburned combustible components and still have the potential to continue burning. If such flue gas is directly introduced into dust removal equipment for purification and then discharged into the atmosphere, it will not only waste the combustible energy contained in these solid particles, but also reduce the overall thermal efficiency of the boiler.

[0029] To solve this technical problem, this utility model provides a boiler circulating combustion device.

[0030] For details, please refer to Figures 1-4 The boiler circulating combustion device specifically includes:

[0031] The boiler body 1 has a flue gas outlet connected to a circulation mechanism 2. The circulation mechanism 2 includes a cyclone separator body 201. The air inlet pipe of the cyclone separator body 201 is connected to the flue gas outlet of the boiler body 1. The circulation mechanism 2 is used to separate flue gas from solid particles and to recover solid particles, thereby realizing the cyclic combustion of solid particles.

[0032] The boiler circulating combustion device provided by this utility model utilizes a cyclone separator body 201 at the flue gas outlet of the boiler body 1. The cyclone separator body 201 can separate incompletely burned solid particles in the gas, and the separated solid particles can be reintroduced into the boiler body 1 for circulating combustion. This fully utilizes the heat contained in these particles, significantly improves the thermal efficiency of the boiler system, reduces the amount of new fuel used, and further saves energy costs due to the circulating combustion of solid particles.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] Example 1, please refer to Figures 1-4 A boiler circulating combustion device includes a boiler body 1, with a circulation mechanism 2 connected to the flue gas outlet of the boiler body 1. The circulation mechanism 2 includes a cyclone separator body 201, with the air inlet pipe of the cyclone separator body 201 connected to the flue gas outlet of the boiler body 1. The circulation mechanism 2 is used to separate flue gas from solid particles and to recover solid particles, thereby realizing the circulating combustion of solid particles. This application utilizes the cyclone separator body 201 at the flue gas outlet of the boiler body 1. The cyclone separator body 201 can separate incompletely burned solid particles in the gas, and the separated solid particles can be reintroduced into the boiler body 1 for circulating combustion, thereby fully utilizing the heat contained in these particles, significantly improving the thermal efficiency of the boiler system, reducing the amount of new fuel used, and further saving energy costs.

[0037] Furthermore, such as Figure 1 As shown, the air inlet pipe of the circulation mechanism 2 is connected to a connecting pipe 202, which is connected to the flue gas outlet of the boiler body 1, so that the flue gas discharged from the boiler body 1 can enter the cyclone separator body 201.

[0038] Furthermore, such as Figures 1-4 As shown, the exhaust port of the cyclone separator body 201 is connected to an exhaust pipe 203, which is used to discharge the flue gas after the cyclone separator body 201 separates solid particles.

[0039] Example 2 further optimizes the boiler circulating combustion device provided in Example 1. Specifically, the bottom of the cyclone separator body 201 is connected to an isolation feeding section. The isolation feeding section is used to transport the solid particles recovered by the cyclone separator body 201 back to the combustion chamber of the boiler body 1. This arrangement allows the recovered solid particles to be circulated and burned.

[0040] Furthermore, such as Figure 4 As shown, the isolation feeding section includes a recovery cylinder 204 fixedly connected to the bottom of the cyclone separator body 201. A bottom plate 208 is fixedly connected to the bottom of the recovery cylinder 204. A conveying pipe 209 is fixedly connected to the bottom of the bottom plate 208. The conveying pipe 209 is connected to the combustion chamber of the boiler body 1. A connection port 205 connected to the cyclone separator body 201 is provided on the recovery cylinder 204. The solid shell recovered by the cyclone separator body 201 can be conveyed to the combustion chamber of the boiler body 1 through the conveying pipe 209.

[0041] Furthermore, such as Figure 4 As shown, a pusher plate 207 is rotatably connected inside the recovery cylinder 204. The pusher plate 207 adopts a cross-shaped design, which allows the conveying pipe 209 to be separated from the connection port 205, thereby separating the combustion chamber of the boiler body 1 from the cyclone separator body 201.

[0042] Furthermore, a driving component is provided between the pusher plate 207 and the top of the recycling cylinder 204, which is used to drive the pusher plate 207 to rotate.

[0043] Furthermore, such as Figure 2 As shown, the driving component is a motor 206, which is installed on the top of the recycling cylinder 204. The output shaft of the motor 206 passes through the recycling cylinder 204 and is fixedly connected to the pusher plate 207. The motor 206 can drive the pusher plate 207 to rotate. During the rotation of the pusher plate 207, the recycled solid particles can be pushed towards the conveying pipe 209 so that the solid particles can fall into the combustion chamber of the boiler body 1.

[0044] Example 3 further optimizes the boiler circulating combustion device provided in Example 1 or 2. Specifically, the outer surface of the connecting pipe 202 is provided with a heat recovery structure for recovering waste heat from the flue gas.

[0045] Furthermore, such as Figure 1 and Figure 2 As shown, the heat recovery structure includes a heat recovery box 3 sleeved on the outer surface of the connecting pipe 202. Two connecting pipes 301 are fixedly connected to one side of the heat recovery box 3. The two connecting pipes 301 can be used to transport water into the heat recovery box 3 and to discharge the water in the heat recovery box 3. The waste heat in the flue gas can be heated by the connecting pipe 202 to achieve the recovery of waste heat in the flue gas.

[0046] The boiler circulating combustion device provided by this utility model is used as follows:

[0047] During the combustion process of the boiler body 1, the flue gas enters the cyclone separator body 201 through the connecting pipe 202. Solid particles are separated through the boiler body 1. The solid particles fall into the recovery cylinder 204 through the connecting port 205. The motor 206 drives the pusher plate 207 to rotate and push the solid particles towards the conveying pipe 209, so that the solid particles fall into the combustion chamber of the boiler body 1 through the conveying pipe 209 for circulating combustion.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A boiler circulating combustion device, characterized in that, The boiler body (1) is connected to a circulation mechanism (2) at its exhaust port. The circulation mechanism (2) includes a cyclone separator body (201), and the air inlet pipe of the cyclone separator body (201) is connected to the exhaust port of the boiler body (1). The circulation mechanism (2) is used to separate flue gas from solid particles and to recover solid particles, thereby achieving the cyclic combustion of solid particles. The air inlet pipe of the circulation mechanism (2) is connected to a connecting pipe (202), and the connecting pipe (202) is connected to the flue gas outlet of the boiler body (1); The exhaust port of the cyclone separator body (201) is connected to an exhaust pipe (203). The bottom of the cyclone separator body (201) is connected to an isolation feeding section, which is used to transport the solid particles recovered by the cyclone separator body (201) back to the combustion chamber of the boiler body (1). The isolation feeding section includes a recovery cylinder (204) fixedly connected to the bottom of the cyclone separator body (201). The bottom of the recovery cylinder (204) is fixedly connected to a bottom plate (208). The bottom of the bottom plate (208) is fixedly connected to a conveying pipe (209). The conveying pipe (209) is connected to the combustion chamber of the boiler body (1). The recovery cylinder (204) is provided with a connection port (205) connected to the cyclone separator body (201). The recovery cylinder (204) is rotatably connected to a pusher plate (207); the pusher plate (207) adopts a cross-shaped design, which isolates the conveying pipe (209) from the connection port (205), and isolates the combustion chamber of the boiler body (1) from the cyclone separator body (201); A driving component is provided between the top of the pusher plate (207) and the top of the recovery cylinder (204). The driving component is used to drive the pusher plate (207) to rotate. During the rotation of the pusher plate (207), the recovered solid particles are pushed towards the conveying pipe (209) so that the solid particles fall into the combustion chamber of the boiler body (1). The driving component is a motor (206), which is installed on the top of the recycling cylinder (204). The output shaft of the motor (206) passes through the recycling cylinder (204) and is fixedly connected to the pusher plate (207). The outer surface of the connecting pipe (202) is provided with a heat recovery structure.

2. The boiler circulating combustion device according to claim 1, characterized in that, The heat recovery structure includes a heat recovery box (3) sleeved on the outer surface of the connecting pipe (202), and two connecting pipes (301) are fixedly connected to one side of the heat recovery box (3).

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