A compact waste heat recovery device integrated in a flue gas cleaning system

Abstract

The utility model discloses a compact type waste heat recovery device integrated in flue gas purification system relates to flue gas waste heat recovery technical field. Including: smoke collection subassembly, the outer wall of smoke collection subassembly is connected with recovery subassembly, recovery subassembly includes the saving box, the inside fixedly connected with the heat dissipation delivery pipe of saving box, the outer wall fixedly connected with the heat dissipation plate of heat dissipation delivery pipe, the inner wall fixedly connected with the heat storage plate of saving box, the outer wall through -connection with the water drain of saving box lower part, through smoke collection subassembly stable delivery flue gas, cooperate heat dissipation plate and enlarge heat exchange area, heat storage plate and remain excess heat, and heat exchange medium circulation system realizes the secondary use of waste heat, reduces heat loss and energy waste, and water injection component guarantees medium uniform distribution simultaneously, further optimizes heat exchange effect.

Description

Technical Field

[0001] This utility model relates to the field of flue gas waste heat recovery technology, specifically a compact waste heat recovery device integrated into a flue gas purification system. Background Technology

[0002] In the market, most flue gas treatment solutions, flue gas purification systems and waste heat recovery devices are separate units. Existing devices mostly rely on a single delivery pipe for heat exchange, without multiple sets of heat dissipation components and heat storage structures. The heat in the flue gas cannot be fully transferred to the heat exchange medium, and there is a lack of pretreatment of dust and particulate matter in the flue gas. Impurities can easily clog the heat exchange channels, further reducing recovery efficiency and increasing equipment maintenance costs. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a compact waste heat recovery device integrated into a flue gas purification system, solving the problem of insufficient heat recovery efficiency.

[0005] (II) Technical Solution

[0006] To address the aforementioned problems, this utility model provides the following technical solution: a compact waste heat recovery device integrated into a flue gas purification system, comprising: a smoke collection assembly, with a recovery assembly permeating its outer wall; the recovery assembly includes a storage box, with a heat dissipation pipe fixedly connected inside the storage box, a heat dissipation plate fixedly connected to the outer wall of the heat dissipation pipe, a heat storage plate fixedly connected to the inner wall of the storage box, and a drain outlet permeating its lower outer wall. The smoke collection assembly prevents the escape of flue gas during the collection stage, providing a stable source of flue gas for subsequent waste heat recovery. The recovery assembly constructs a closed heat exchange space through the storage box. The cooperation between the heat dissipation pipe and the heat dissipation plate improves the heat exchange efficiency between the flue gas and the heat exchange medium. The heat storage plate reduces heat waste, and the drain outlet ensures that the recovery assembly will not be affected by liquid accumulation, thus achieving coordinated operation of flue gas collection and preliminary waste heat recovery.

[0007] Preferably, a circulating water outlet pipe is connected to the outer wall below the storage box on the side of the drain outlet, and a circulating water inlet pipe is connected to the outer wall above the storage box. A smoke exhaust port is fixedly connected to the outer wall of the end of the heat dissipation conveying pipe away from the smoke collection assembly. The cooperation of the circulating water inlet pipe and the circulating water outlet pipe constructs a heat exchange medium recycling system, which not only ensures the continuity of the heat exchange process, but also realizes the transfer and reuse of waste heat, reducing energy waste. The setting of the smoke exhaust port provides a smooth discharge channel for the treated flue gas, avoiding heat accumulation or poor flow caused by the flue gas stagnating in the heat dissipation conveying pipe, and ensuring the continuous stability of flue gas transportation and waste heat recovery.

[0008] Preferably, multiple sets of heat dissipation plates are provided on the outer wall of the heat dissipation conveying pipe. The heat storage plate has through holes that pass through the outer wall of the drain outlet and the circulating water outlet pipe. A filter plate is fixedly connected to the inner wall of the heat dissipation conveying pipe near the smoke collection assembly. A water injection assembly is fixedly connected to the upper part of the inner wall of the storage box. The dispersed arrangement of multiple sets of heat dissipation plates increases the contact area with the heat exchange medium, improving the uniformity and efficiency of heat transfer. The filter plate can effectively remove impurities in the flue gas, protect the heat dissipation conveying pipe and subsequent components from wear or blockage by impurities, extend the service life of the components, and ensure the unobstructed heat exchange channel. The through holes of the heat storage plate avoid the obstruction of heat exchange by liquid accumulation. The water injection assembly serves as a backup or auxiliary structure for replenishing the heat exchange medium, further ensuring the stable operation of the heat exchange process and reducing heat exchange interruptions caused by insufficient medium.

[0009] Preferably, the smoke collection assembly includes a smoke collection box, with a flue gas conveying pipe extending through the outer wall of the smoke collection box. The flue gas conveying pipe and the heat dissipation conveying pipe are fixedly connected by a connecting flange. Both the outer walls of the flue gas conveying pipe and the outer walls of the heat dissipation conveying pipe are fixedly connected by connecting flanges. The smoke collection box provides a buffer space for the flue gas, making the flue gas conveying more stable and avoiding the impact of instantaneous flow fluctuations on the subsequent waste heat recovery effect. The flue gas conveying pipe serves as the conveying channel for flue gas from the smoke collection assembly to the recovery assembly, ensuring the continuity of flue gas flow. The connecting flange, through a stable connection method, improves the sealing performance at the connection between the flue gas conveying pipe and the heat dissipation conveying pipe, reducing energy waste and environmental impact caused by flue gas leakage, while also facilitating subsequent disassembly and maintenance of the two conveying pipes.

[0010] Preferably, the water injection assembly includes a water injection pipe, and a drain hole is provided on the inner wall below the water injection pipe. The water injection pipe provides a channel for replenishing the heat exchange medium, ensuring that the external medium can smoothly enter the storage box. The setting of multiple drain holes allows the heat exchange medium to be evenly distributed in the storage box, avoiding uneven heat exchange caused by excessive or insufficient heat exchange medium in some areas, further improving the heat exchange efficiency. At the same time, the evenly flowing medium can also reduce the impact on the internal components of the storage box and protect the structural stability of the components.

[0011] (III) Beneficial Effects

[0012] This invention provides a compact waste heat recovery device integrated into a flue gas purification system. It offers the following advantages:

[0013] (i) The compact waste heat recovery device integrated into the flue gas purification system stably delivers flue gas through the flue gas collection component, expands the heat exchange area with the heat dissipation plate, retains excess heat with the heat storage plate, and realizes the secondary utilization of waste heat through the heat exchange medium circulation system, thereby reducing heat loss and energy waste. At the same time, the water injection component ensures uniform distribution of the medium and further optimizes the heat exchange effect.

[0014] (II) This compact waste heat recovery device integrated into the flue gas purification system can avoid blockage of heat exchange channels and wear of components by intercepting impurities in flue gas through the filter plate. The drain port and the heat storage plate through hole prevent liquid accumulation and maintain the internal stability of the device. The entire filter plate waste heat recovery structure is compacted in one place, which solves the problem of space occupation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A;

[0018] Figure 4 This is a schematic diagram of the heat dissipation and delivery pipe of this utility model.

[0019] In the diagram: 1. Smoke collection assembly; 11. Smoke collection box; 12. Smoke conveying pipe; 13. Connecting flange; 2. Recovery assembly; 21. Storage box; 22. Heat dissipation conveying pipe; 23. Heat dissipation plate; 24. Smoke exhaust port; 25. Circulating water inlet pipe; 26. Circulating water outlet pipe; 27. Heat storage plate; 28. Filter plate; 29. ​​Drain outlet; 3. Water injection assembly; 31. Water injection pipe; 32. Drain hole. Detailed Implementation

[0020] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution for a compact waste heat recovery device integrated into a flue gas purification system, including: a smoke collection component 1, and a recovery component 2 connected through the outer wall of the smoke collection component 1; the recovery component 2 includes a storage box 21, a heat dissipation conveying pipe 22 fixedly connected inside the storage box 21, a heat dissipation plate 23 fixedly connected to the outer wall of the heat dissipation conveying pipe 22, a heat storage plate 27 fixedly connected to the inner wall of the storage box 21, and a drain outlet 29 connected through the outer wall below the storage box 21.

[0022] A circulating water outlet pipe 26 is connected to the outer wall below the storage box 21 on the side of the drain outlet 29. A circulating water inlet pipe 25 is connected to the outer wall above the storage box 21. A smoke exhaust port 24 is fixedly connected to the outer wall of the end of the heat dissipation conveying pipe 22 away from the smoke collection assembly 1.

[0023] Multiple sets of heat dissipation plates 23 are provided on the outer wall of heat dissipation conveying pipe 22. Heat storage plate 27 is provided with a through hole on the outer wall of drain outlet 29 and circulating water outlet pipe 26. Filter plate 28 is fixedly connected to the inner wall of heat dissipation conveying pipe 22 near smoke collection assembly 1. Water injection assembly 3 is fixedly connected to the upper part of the inner wall of storage box 21.

[0024] The smoke collection assembly 1 includes a smoke collection box 11. A flue gas conveying pipe 12 is connected through the outer wall of the smoke collection box 11. The flue gas conveying pipe 12 and the heat dissipation conveying pipe 22 are fixedly connected by a connecting flange 13. The outer wall of the flue gas conveying pipe 12 and the outer wall of the heat dissipation conveying pipe 22 are both fixedly connected by a connecting flange 13.

[0025] Water injection assembly 3 includes a water injection pipe 31, and a drain hole 32 is provided on the inner wall below the water injection pipe 31.

[0026] In use, the flue gas generated during industrial production first enters the flue gas collection box 11 of the flue gas collection assembly 1. The flue gas collection box 11 provides temporary containment and buffer space for the flue gas, which can balance the instantaneous flow fluctuations of the flue gas and avoid the impact of sudden increases or decreases in flow on the subsequent processing flow. After the flue gas stabilizes in the flue gas collection box 11, it flows along the flue gas conveying pipe 12 that runs through the top of the flue gas collection box 11. At this time, the flue gas conveying pipe 12 is connected and fixed to the connecting flange 13 on the outer wall of the heat dissipation conveying pipe 22 of the recovery assembly 2 through the connecting flange 13 fixed on its outer wall. With the sealing and stabilizing effect of the connecting flange 13, it is ensured that there is no leakage of flue gas during the conveying process, and it smoothly enters the interior of the heat dissipation conveying pipe 22, laying a stable foundation for subsequent waste heat recovery.

[0027] After the flue gas enters the heat dissipation pipe 22, it first flows through the filter plate 28 fixed on the inner wall of the end of the heat dissipation pipe 22 near the smoke collection assembly 1. The filter plate 28 can intercept dust, particles and other impurities mixed in the flue gas, preventing impurities from adhering to the pipe wall of the heat dissipation pipe 22 or entering subsequent components, avoiding blockage of the heat exchange channel and reduction of the heat conduction efficiency of the pipe wall, while reducing the wear of impurities on the components and ensuring the stable operation of the subsequent waste heat exchange process.

[0028] The filtered flue gas flows continuously within the heat dissipation pipe 22. At this time, the storage box 21 of the recovery component 2 has been pre-filled with sufficient heat exchange medium. The heat carried by the flue gas is transferred to the surrounding heat exchange medium through the pipe wall of the heat dissipation pipe 22. Meanwhile, multiple heat dissipation plates 23 set on the outer wall of the heat dissipation pipe 22 further expand the contact area between the flue gas and the heat exchange medium, making the heat of the flue gas diffuse more evenly and fully into the heat exchange medium, thereby improving the heat exchange efficiency. The heat storage plate 27 fixed on the inner wall of the storage box 21 can retain the excess heat that is not immediately absorbed by the heat exchange medium during the heat exchange process, preventing the heat from being directly lost and further improving the waste heat utilization rate.

[0029] As heat exchange proceeds, the heat exchange medium that has absorbed sufficient heat within the storage tank 21 is discharged through the circulating water outlet pipe 26 on the lower outer wall of the storage tank 21. This allows it to be transported to external equipment or systems requiring heat, such as heating or industrial heat, thus achieving secondary utilization of waste heat. Simultaneously, a new, low-temperature heat exchange medium is continuously injected into the storage tank 21 through the circulating water inlet pipe 25 on the upper outer wall of the storage tank 21, forming a circulating flow system for the heat exchange medium and ensuring the continuity of the heat exchange process. If the heat exchange medium replenished by the circulating water inlet pipe 25 is insufficient, the water injection assembly fixed above the inner wall of the storage tank 21 will... Component 3 can serve as a backup supplementary structure. The external heat exchange medium flows in through the water injection pipe 31 and is then evenly sprayed out through multiple drain holes 32 opened on the inner wall below the water injection pipe 31, so that the heat exchange medium is evenly distributed in the storage box 21, avoiding uneven heat exchange caused by insufficient medium in some areas. In addition, if excess liquid is generated or accumulated in the storage box 21 due to the heat exchange process, it can be discharged through the drain port 29 below. At the same time, the through holes on the heat storage plate 27 corresponding to the drain port 29 and the circulating water outlet pipe 26 can prevent liquid from accumulating at the heat storage plate 27, ensuring the stability of the internal environment of the storage box 21.

[0030] The flue gas, after waste heat recovery and impurity filtration, continues to flow along the heat dissipation conveying pipe 22 to the end away from the smoke collection assembly 1, and is finally discharged through the exhaust port 24 fixed on the outer wall of the heat dissipation conveying pipe 22.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compact waste heat recovery device integrated into a flue gas purification system, characterized in that, include: A smoke collection assembly (1) is provided, wherein a recovery assembly (2) is connected through the outer wall of the smoke collection assembly (1); The recycling component (2) includes a storage box (21), a heat dissipation conveying pipe (22) is fixedly connected inside the storage box (21), a heat dissipation plate (23) is fixedly connected to the outer wall of the heat dissipation conveying pipe (22), a heat storage plate (27) is fixedly connected to the inner wall of the storage box (21), and a drain outlet (29) is connected through the outer wall below the storage box (21).

2. The compact waste heat recovery device integrated into a flue gas purification system according to claim 1, characterized in that: The outer wall below the storage box (21) is connected to a circulating water outlet pipe (26) on the side of the drain outlet (29), and the outer wall above the storage box (21) is connected to a circulating water inlet pipe (25). The outer wall of the heat dissipation conveying pipe (22) away from the smoke collection assembly (1) is fixedly connected to a smoke exhaust port (24).

3. A compact waste heat recovery device integrated into a flue gas purification system according to claim 2, characterized in that: The heat dissipation plate (23) is provided with multiple sets on the outer wall of the heat dissipation conveying pipe (22). The heat storage plate (27) is provided with a through hole on the outer wall of the drain outlet (29) and the circulating water outlet pipe (26). The heat dissipation conveying pipe (22) is fixedly connected to the inner wall of the smoke collection assembly (1). The water injection assembly (3) is fixedly connected to the upper part of the inner wall of the storage box (21).

4. A compact waste heat recovery device integrated into a flue gas purification system according to claim 1, characterized in that: The smoke collection assembly (1) includes a smoke collection box (11), and a flue gas conveying pipe (12) is connected through the outer wall above the smoke collection box (11). The flue gas conveying pipe (12) and the heat dissipation conveying pipe (22) are fixedly connected by a connecting flange (13). The outer wall of the flue gas conveying pipe (12) and the outer wall of the heat dissipation conveying pipe (22) are both fixedly connected by a connecting flange (13).

5. A compact waste heat recovery device integrated into a flue gas purification system according to claim 3, characterized in that: The water injection component (3) includes a water injection pipe (31), and a drain hole (32) is provided on the inner wall below the water injection pipe (31).

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