Combustion structure of a boiler

Abstract

This utility model relates to the field of industrial boiler technology and discloses a boiler combustion structure, including a boiler body with a furnace inside. This utility model utilizes an underground air duct and a blower interface to deliver sufficient air to the chain grate combustion chamber. The stable air supply ensures full contact between fuel and oxygen, preventing incomplete combustion. The grate speed control box adjusts the chain grate's operating speed, precisely controlling the speed and amount of fuel entering the combustion chamber. This helps maintain a stable and efficient combustion state under different production demands, preventing combustion efficiency from being affected by excessive or insufficient fuel supply. A ceramic multi-tube dust collector is installed on the blower interface surface to perform preliminary dust removal on the combustion flue gas. The structural characteristics of the ceramic multi-tube design facilitate preliminary dust separation, effectively reducing the dust content in the flue gas and preventing large amounts of dust from being directly emitted into the atmosphere, thus mitigating environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of industrial boiler technology, and in particular to a combustion structure for a boiler. Background Technology

[0002] Industrial boilers play a vital role in many industrial sectors, such as chemical, power, and textile industries, serving as key equipment for providing thermal energy. With the continuous development of industry, the performance requirements for industrial boilers are also increasing.

[0003] Traditional boilers lack precise control over the speed and amount of fuel entering the combustion chamber. They typically use relatively simple mechanical structures to control the grate operation, making it difficult to flexibly adjust according to actual production needs. During production, changes in production load lead to corresponding changes in heat demand. If the fuel supply speed and amount cannot be precisely controlled, incomplete combustion due to excessive fuel supply or insufficient fuel supply can easily occur, affecting combustion efficiency. Furthermore, many boilers use simple dust removal methods, such as gravity settling, which are ineffective at capturing fine dust particles generated during combustion. Without efficient dust removal equipment, large amounts of dust are directly emitted into the atmosphere with the flue gas. With increasingly stringent environmental protection requirements, this high-dust-emission boiler combustion structure can no longer meet environmental protection needs, causing serious air pollution and contributing to environmental problems such as smog. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a combustion structure for a boiler.

[0005] This utility model is achieved by the following technical solution: a combustion structure of a boiler, including a boiler body, a furnace is provided inside the boiler body, a first convection chamber is provided inside the furnace, a second convection chamber is provided inside the furnace, a chain grate combustion chamber is provided inside the boiler body, an underground air duct is provided on the surface of the boiler body, a blower interface is fixedly installed on the surface of the underground air duct, and a ceramic multi-tube dust collector is fixedly installed on the surface of the blower interface.

[0006] Through the above technical solutions, the convection chamber helps to make full use of thermal energy, the chain grate combustion chamber enables the fuel to burn continuously and stably, the underground air duct and the blower interface work together to ensure a sufficient air supply, and the ceramic multi-tube dust collector preliminarily purifies the flue gas, which helps to reduce environmental pollution.

[0007] As a further improvement to the above solution, a flue gas outlet pipe is fixedly connected to the surface of the ceramic multi-tube dust collector.

[0008] Through the above technical solution, the existence of the flue gas outlet pipe ensures the normal discharge path of the flue gas, and avoids the accumulation of flue gas in the dust collector, which would affect the dust removal effect and the normal operation of the entire combustion system.

[0009] As a further improvement to the above scheme, the underground air duct is connected to the chain grate combustion chamber.

[0010] The above technical solutions ensure a stable air supply to the combustion chamber, enabling the fuel to burn completely, improving combustion efficiency, and reducing the generation of incomplete combustion products.

[0011] As a further improvement to the above solution, a slag discharge machine is fixedly connected to the surface of the boiler body.

[0012] Through the above technical solutions, the slag remover can automatically clean up the waste slag, avoid the accumulation of waste slag affecting the normal operation of the boiler, ensure the continuity of the combustion process, and facilitate the subsequent processing of the waste slag.

[0013] As a further improvement to the above solution, a grate speed control box is fixedly connected to the surface of the boiler body.

[0014] Through the above technical solutions, the grate speed control box can flexibly adjust the grate speed according to actual needs, thereby controlling the intensity and rhythm of combustion, adapting to different operating conditions, and improving the boiler's operational flexibility and energy utilization efficiency.

[0015] As a further improvement to the above solution, an induced draft fan is fixedly connected to the surface of the flue gas outlet pipe.

[0016] Through the above technical solution, the presence of the induced draft fan ensures the smooth discharge of flue gas, keeps the gas pressure in the entire combustion system stable, helps other components such as ceramic multi-tube dust collectors to work normally, and also facilitates the delivery of flue gas to subsequent treatment equipment.

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

[0018] This invention utilizes an underground air duct and a blower interface to deliver ample air to the chain grate combustion chamber. A stable air supply ensures sufficient contact between fuel and oxygen, preventing incomplete combustion. The grate speed control box adjusts the chain grate's operating speed, precisely controlling the speed and amount of fuel entering the combustion chamber. This helps maintain stable and efficient combustion under different production demands, preventing combustion efficiency from being affected by excessive or insufficient fuel supply. A ceramic multi-tube dust collector, installed on the blower interface surface, performs preliminary dust removal on the combustion flue gas. The multi-tube structure facilitates initial dust separation, effectively reducing the dust content in the flue gas and preventing large amounts of dust from being directly released into the atmosphere, thus mitigating environmental pollution. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point B;

[0022] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A;

[0023] Explanation of key symbols:

[0024] 1. Boiler body; 2. Furnace; 3. Convection chamber one; 4. Convection chamber two; 5. Chain grate combustion chamber; 6. Underground air duct; 7. Blower inlet; 8. Ceramic multi-tube dust collector; 9. Flue gas outlet pipe; 10. Slag remover; 11. Grate speed control box; 12. Induced draft fan. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figure 1-4 This embodiment of a boiler combustion structure includes a boiler body 1, a furnace 2 inside the boiler body 1, a first convection chamber 3 inside the furnace 2, a second convection chamber 4 inside the furnace 2, a chain grate combustion chamber 5 inside the boiler body 1, an underground air duct 6 on the surface of the boiler body 1, a blower inlet 7 fixedly installed on the surface of the underground air duct 6, and a ceramic multi-tube dust collector 8 fixedly installed on the surface of the blower inlet 7. The furnace 2 provides space for combustion. The first convection chamber 3 and the second convection chamber 4 can heat the internal medium through thermal convection, improving energy utilization efficiency. The chain grate combustion chamber 5 is the main place for fuel combustion. The underground air duct 6 is connected to the chain grate combustion chamber 5 and supplies air to the combustion chamber through the blower inlet 7 to ensure complete fuel combustion. The ceramic multi-tube dust collector 8 is installed on the surface of the blower inlet 7 and can perform preliminary dust removal treatment on the flue gas generated by combustion.

[0028] A flue gas outlet pipe 9 is fixedly connected to the surface of the ceramic multi-tube dust collector 8. The flue gas outlet pipe 9 fixedly connected to the surface of the ceramic multi-tube dust collector 8 is mainly used to discharge the flue gas after preliminary treatment by the ceramic multi-tube dust collector for further treatment or discharge.

[0029] The underground air duct 6 is connected to the chain grate combustion chamber 5. The underground air duct 6 delivers outside air to the chain grate combustion chamber 5 to provide the necessary oxygen for fuel combustion.

[0030] A slag remover 10 is fixedly connected to the surface of the boiler body 1. During the combustion process, waste slag is generated after the fuel is burned. The slag remover 10 can discharge the waste slag from the boiler body 1 in a timely manner to maintain the normal operation of the combustion system.

[0031] A grate speed control box 11 is fixedly connected to the surface of the boiler body 1. The grate speed control box 11 fixedly connected to the surface of the boiler body 1 can adjust the running speed of the chain grate, thereby controlling the speed and amount of fuel entering the combustion chamber.

[0032] An induced draft fan 12 is fixedly connected to the surface of the flue gas outlet pipe 9. The induced draft fan 12 generates negative pressure to draw the pre-treated flue gas out of the flue gas outlet pipe 9, so that the flue gas flows in a predetermined direction.

[0033] The implementation principle of the combustion structure of a boiler in this embodiment is as follows: First, the blower inlet 7 is opened, and the underground air duct 6 begins to supply air to the chain grate combustion chamber 5. Blowing is performed according to a pre-set air volume to provide the necessary oxygen for fuel combustion. The grate speed control box 11 is then activated to adjust the running speed of the chain grate to a suitable initial value, controlling the fuel to begin entering the chain grate combustion chamber 5. After the fuel enters the combustion chamber and begins to burn, the combustion situation in the furnace 2 is observed. Based on actual production needs, the running speed of the chain grate is adjusted through the grate speed control box 11. The speed and amount of fuel entering the combustion chamber are controlled to meet different heat output requirements. During the combustion process, waste residue is generated after the fuel is burned. The slag discharger 10 can discharge the waste residue from the boiler body 1 in a timely manner. After the combustion is completed, the fuel supply to the chain grate combustion chamber 5 is stopped first. The speed of the chain grate is gradually adjusted to the slowest speed through the grate speed control box 11 until it stops running. The blower interface 7 is closed to stop blowing air into the combustion chamber. The induced draft fan 12 is run to ensure that the induced draft fan 12 can continuously generate sufficient negative pressure to smoothly extract the pre-treated flue gas from the flue gas outlet pipe 9.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A combustion structure of a boiler, characterized by, The boiler body (1) includes a furnace (2) inside the boiler body (1), a first convection chamber (3) inside the furnace (2), a second convection chamber (4) inside the furnace (2), a chain grate combustion chamber (5) inside the boiler body (1), an underground air duct (6) on the surface of the boiler body (1), a blower interface (7) fixedly installed on the surface of the underground air duct (6), and a ceramic multi-tube dust collector (8) fixedly installed on the surface of the blower interface (7).

2. A combustion structure for a boiler as claimed in claim 1, characterised in that: The surface of the ceramic multi-tube dust collector (8) is fixedly connected to a flue gas outlet pipe (9).

3. A combustion structure for a boiler as claimed in claim 1, characterized in that: The underground air duct (6) is connected to the chain grate combustion chamber (5).

4. A combustion structure for a boiler as defined in claim 1, characterized in that A slag discharger (10) is fixedly connected to the surface of the boiler body (1).

5. A combustion structure for a boiler as defined in claim 1, characterized in that A grate speed control box (11) is fixedly connected to the surface of the boiler body (1).

6. A combustion structure for a boiler as defined in claim 2, characterized in that: An induced draft fan (12) is fixedly connected to the surface of the flue gas outlet pipe (9).

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