High-temperature air preheater

Abstract

The utility model discloses a high-temperature air preheater which comprises a preheating outer pipe and a preheating assembly, a first air inlet is formed in the upper left end of the preheating outer pipe, an exhaust pipe is arranged on the lower right side of the preheating outer pipe, the preheating assembly is installed in the preheating outer pipe and comprises airtight covers, and the airtight covers are installed at the two ends of the preheating outer pipe through connecting bolts. Multiple sets of preheating pipes are connected between the two sets of airtight covers, a second air inlet is formed in the front side of the airtight cover at the front end of the preheating outer pipe, an air outlet is formed in the opposite face of the second air inlet, and an air partition plate is arranged on the front side of the airtight cover at the front end of the preheating outer pipe and located between the second air inlet and the air outlet. In actual use, through the design of the preheating outer pipe, high-temperature waste gas introduced by the first gas inlet, the sealed preheating assembly, the multiple sets of preheating pipes, fresh air introduced by the second gas inlet, preheated air discharged by the gas outlet, the gas separating plate for optimizing gas flow and the like, heat energy in high-temperature flue gas discharged by the incinerator is recycled, and the environment is protected. And the waste of heat energy is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature air preheating of incinerators, and specifically relates to a high-temperature air preheater. Background Technique

[0002] In the field of sludge incineration environmental protection, as a key equipment, the incinerator undertakes the important task of converting sludge into harmless products through high-temperature combustion. However, during the incineration process, the incinerator will inevitably discharge a large amount of hot gas. These hot gases are mainly composed of high-temperature flue gas generated by incineration, which not only contains harmless components such as water vapor and carbon dioxide, but may also contain potential pollutants such as nitrogen oxides, sulfur oxides, and unburned organic matter.

[0003] During the process of directly discharging high-temperature gas by the incinerator, a large amount of thermal energy is often wasted; these high-temperature gases, that is, the flue gas generated after incineration, contain rich thermal energy, but if they are directly discharged into the atmosphere without proper heat recovery treatment, it will not only cause energy loss, but may also cause certain thermal pollution to the environment.

[0004] Therefore, there is a need for a high-temperature air preheater to solve the above problems. Content of the Utility Model

[0005] Technical problem to be solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a high-temperature air preheater to solve the problem of a large amount of thermal energy waste often accompanied during the process of directly discharging high-temperature gas by the incinerator mentioned in the above background technique.

[0007] Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a high-temperature air preheater, including a preheating outer tube and a preheating component, a first air inlet is arranged at the upper left end of the preheating outer tube, an exhaust pipe is arranged at the lower right side of the preheating outer appearance, and a preheating component is installed inside the preheating outer tube;

[0009] The preheating component includes an airtight cover, the airtight cover is installed at both ends of the preheating outer tube through connecting bolts, multiple preheating tubes are connected between the two groups of airtight covers, a second air inlet is arranged in front of the airtight cover at the front end of the preheating outer tube, an air outlet is arranged on the opposite side of the second air inlet, and a gas separation plate is arranged in front of the airtight cover at the front end of the preheating outer tube, and the gas separation plate is between the second air inlet and the air outlet.

[0010] Preferably, multiple support connection brackets are arranged at the lower end of the preheating outer tube, and the upper end of the support connection bracket fits with the curvature of the lower end of the preheating outer tube.

[0011] Preferably, an airtight gasket is provided between the airtight covers at both ends of the preheating outer tube and the preheating outer tube.

[0012] Preferably, the airtight gasket is made of graphite.

[0013] Preferably, a baffle is provided at the upper end of the preheating tube, and the upper end of the baffle corresponds to the position of the first air inlet.

[0014] Preferably, multiple groups of reinforcing plates are fixed between multiple groups of the preheating tubes.

[0015] Beneficial effects

[0016] The utility model provides a high-temperature air preheater, which has the following beneficial effects: Through its integrated preheating outer tube, high-temperature waste gas introduced from the first air inlet, sealed preheating assembly and multiple groups of preheating tubes, fresh air introduced from the second air inlet, preheated air discharged from the air outlet, and air separation plates for optimizing the air flow, etc., the recovery and utilization of the heat energy in the high-temperature flue gas discharged from the incinerator are successfully realized, the waste of heat energy is reduced, and the thermal pollution caused by direct discharge to the environment is reduced, thereby improving the energy efficiency and environmental protection performance of the overall incineration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic side-sectional structural diagram of the utility model;

[0019] Figure 3 is a schematic side-sectional rear-view structural diagram of the utility model;

[0020] Figure 4 is an exploded structural diagram of the utility model.

[0021] In the figure: 1. Preheating outer tube; 11. First air inlet; 12. Exhaust port; 2. Preheating assembly; 21. Airtight cover; 22. Second air inlet; 23. Air outlet; 24. Preheating tube; 25. Air separation plate; 26. Airtight gasket; 3. Baffle; 4. Support connection bracket; 5. Reinforcing plate; 6. Connecting bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution: a high-temperature air preheater, which includes a preheating outer tube 1 and a preheating component 2. A first air inlet 11 is provided at the upper left end of the preheating outer tube 1, and an exhaust pipe is provided at the lower right side of the preheating outer appearance. The preheating component 2 is installed inside the preheating outer tube 1. The preheating component 2 includes an airtight cover 21, and the airtight cover 21 is installed at both ends of the preheating outer tube 1 through connecting bolts 6. A plurality of preheating tubes 24 are connected between the two groups of airtight covers 21. A second air inlet 22 is provided on the front side of the airtight cover 21 at the front end of the preheating outer tube 1, and an air outlet 23 is provided on the opposite side of the second air inlet 22. A partition plate 25 is provided on the front side of the airtight cover 21 at the front end of the preheating outer tube 1, and the partition plate 25 is between the second air inlet 22 and the air outlet 23;

[0024] During the use process, the preheating outer tube 1 is the outer shell of the entire preheater. The preheating outer tube 1 provides a closed space, enabling the preheating process to be carried out therein and avoiding rapid heat dissipation; the first air inlet 11 allows the exhaust gas that has passed through the incinerator or other heat sources to enter the preheater; the airtight cover 21 is installed at both ends of the preheating outer tube 1 through the connecting bolts 6 to ensure the sealing performance of the preheating component 2; the preheating tubes 24 transfer the heat energy in the exhaust gas to the fresh air through the heat conduction of the tube wall, realizing the preheating of the new gas. The second air inlet 22 allows the new gas to enter the preheater, and the air outlet 23 allows the preheated fresh air to be discharged from the preheater; the partition plate 25 ensures that the fresh air can flow along a predetermined path during the preheating process, improving the heat exchange efficiency.

[0025] A plurality of support connection brackets 4 are provided at the lower end of the preheating outer tube 1. The upper ends of the support connection brackets 4 are fitted to the arc at the lower end of the preheating outer tube 1. The plurality of support connection brackets 4 provided at the lower end of the preheating outer tube 1 play an important role in supporting, fixing and protecting in the preheater system, ensuring the stable operation and efficient work of the preheater.

[0026] An airtight gasket 26 is provided between the airtight cover 21 at both ends of the preheating outer tube 1 and the preheating outer tube 1. The main function of the airtight gasket 26 is to provide a tight sealing interface to prevent the leakage of high-temperature gas or preheated air from the gap between the airtight cover 21 and the preheating outer tube 1 during the preheating process.

[0027] The airtight gasket 26 is made of graphite material. The airtight gasket 26 made of graphite material can withstand the high-temperature environment inside the preheater, ensuring the continuity and stability of the preheating process, reducing the problem of sealing performance degradation caused by temperature changes, and thus improving the overall thermal efficiency of the preheater.

[0028] A baffle 3 is provided at the upper end of the preheating tube 24. The upper end of the baffle 3 corresponds to the position of the first air inlet 11. By preventing the exhaust gas from directly blowing on the preheating tube 24, the baffle 3 effectively reduces the risk of damage to the preheating tube 24 caused by high temperature and erosion, and extends the service life of the preheating tube 24.

[0029] There are multiple groups of reinforcing plates 5 fixed between multiple groups of preheating pipes 24. By being fixed between the preheating pipes 24, the reinforcing plates 5 provide an additional support structure for the entire group of preheating pipes 24. This support helps to enhance the overall stability of the group of preheating pipes 24 and prevent them from deforming or displacing under high-temperature and high-pressure environments.

[0030] As an embodiment of the present utility model: When using the high-temperature air preheater, first connect the first air inlet 11 to allow the waste gas that has passed through the incinerator or other heat sources to enter the preheater, and connect the second air inlet 22 to allow the new gas to enter the preheater; when the waste gas flows in the preheating outer pipe 1, heat energy is transferred to the new gas through the heat conduction of the pipe wall to achieve the preheating of the new gas; during this process, the gas separation plate 25 plays a key role in ensuring that the new gas flows along a predetermined path, undergoes sufficient heat exchange with the waste gas, and improves the heat exchange efficiency; during the preheating process, the baffle plate 3 effectively prevents the waste gas from directly impacting the preheating pipes 24, reduces the risk of wear and damage to the preheating pipes 24, and extends the service life of the preheater; the presence of the reinforcing plates 5 enhances the overall stability of the group of preheating pipes 24, prevents them from deforming or displacing under high-temperature and high-pressure environments, and further ensures the stable operation and efficient work of the preheater; the preheated new air is discharged through the air outlet 23, thus completing the use of the high-temperature air preheater.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature air preheater, comprising a preheating outer tube (1) and a preheating assembly (2). A first air inlet (11) is provided at the upper left end of the preheating outer tube (1), and an exhaust pipe is provided at the lower right side of the preheating outer appearance. It is characterized in that: A preheating component (2) is installed inside the preheating outer tube (1); The preheating component (2) includes an airtight cover (21). The airtight cover (21) is installed at both ends of the preheating outer tube (1) through connecting bolts (6). A plurality of preheating tubes (24) are connected between the two groups of airtight covers (21). A second air inlet (22) is arranged on the front side of the airtight cover (21) at the front end of the preheating outer tube (1). An air outlet (23) is arranged on the opposite surface of the second air inlet (22). An air separation plate (25) is arranged on the front side of the airtight cover (21) at the front end of the preheating outer tube (1). The air separation plate (25) is between the second air inlet (22) and the air outlet (23).

2. The high-temperature air preheater according to claim 1, characterized in that: A plurality of support connection brackets (4) are arranged at the lower end of the preheating outer tube (1). The upper ends of the support connection brackets (4) are fitted to the arc of the lower end of the preheating outer tube (1).

3. The high-temperature air preheater according to claim 1, characterized in that: An airtight gasket (26) is arranged between the airtight covers (21) at both ends of the preheating outer tube (1) and the preheating outer tube (1).

4. The high-temperature air preheater according to claim 3, characterized in that: The airtight gasket (26) is made of graphite material.

5. A high-temperature air preheater according to claim 1, characterized in that: A baffle (3) is arranged at the upper end of the preheating tube (24). The upper end of the baffle (3) corresponds to the position of the first air inlet (11).

6. The high-temperature air preheater according to claim 1, wherein: A plurality of reinforcing plates (5) are fixed between the plurality of preheating tubes (24).

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