Device for recycling waste heat of pressure vessel

Abstract

The utility model discloses a waste heat recycling device for a pressure vessel, which relates to the technical field of recycling devices and comprises a mounting frame body, and a waste heat recycling boiler barrel, a lower heat exchange device and an upper heat exchange device are respectively mounted on the mounting frame body. The upper end of the waste heat recycling boiler barrel is connected with the lower heat exchange device; the upper end of the lower heat exchange device is connected with the upper heat exchange device; due to the arrangement of the waste heat gas inlet I and the waste heat transmission pipe, waste heat waste gas flows in orderly, and heat loss caused by airflow turbulence is avoided; the water conveying pipe is connected with the inner container, warm water heated by the lower heat exchange device is introduced, waste heat in the boiler barrel body is utilized for secondary heating, waste heat resources are fully utilized through the secondary heating design, compared with single-time heating, the temperature of hot water can be increased by 15-20 DEG C, the use value of the hot water is remarkably increased, and the energy utilization rate is further increased.

Description

Technical Field

[0001] This utility model specifically relates to the field of recycling and reuse devices, and more specifically to a pressure vessel waste heat recovery and reuse device. Background Technology

[0002] In modern industrial systems, pressure vessels in industries such as chemical, metallurgy, and power generate significant amounts of waste heat during operation. Statistics show that in some steel mills, approximately 30%-50% of energy is lost as waste heat during steelmaking, while in some chemical reaction units, the waste heat waste rate can reach as high as 60%. Traditional waste heat recovery equipment, such as simple tubular heat exchangers, suffers from limited heat exchange area and unreasonable structural design, resulting in waste heat recovery rates generally below 30%, failing to meet the demands for high efficiency and energy conservation. Furthermore, traditional equipment is often bulky, occupying substantial factory space and incurring high installation and maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a pressure vessel waste heat recovery and reuse device, which significantly improves the recovery and reuse rate by installing an upper heat exchange device, a lower heat exchange device, and a waste heat recovery and reuse boiler drum with a mounting frame; thereby solving the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pressure vessel waste heat recovery and reuse device, comprising:

[0006] The mounting frame is equipped with a waste heat recovery boiler drum, a lower heat exchanger, and an upper heat exchanger. The upper end of the waste heat recovery boiler drum is connected to the lower heat exchanger, and the upper end of the lower heat exchanger is connected to the upper heat exchanger.

[0007] The mounting frame includes a base frame, one end of which is fixedly connected to a side frame; the upper surface of the base frame is fixedly connected to the boiler body via a fixing seat, the fixing seats are symmetrically arranged at the bottom of the boiler body, one side of the boiler body is provided with a waste heat air inlet, and the other side of the boiler body is provided with a waste heat transmission pipe and a transmission water pipe, the other end of which is fixedly connected to a waste heat air inlet.

[0008] The other end of the transmission water pipe is fixedly connected to the second drain outlet; the second waste heat air inlet and the second drain outlet are both located at the bottom of the lower fixed plate, the upper end of the lower fixed plate is connected to the heat exchange fin assembly, and the upper end of the heat exchange fin assembly is connected to the upper fixed plate; a heat exchange outer box is fixedly installed between the lower fixed plate and the upper fixed plate.

[0009] As a further technical solution of this utility model, the upper fixed plate is provided with a water inlet and an exhaust outlet on its upper surface; the lower fixed plate, the upper fixed plate and the heat exchange outer box are connected by multiple connecting rods and multiple fixing rods; one side of the lower fixed plate is fixedly connected to one side of the lower end of the side frame.

[0010] As a further technical solution of this utility model, the upper ends of the plurality of connecting rods and the plurality of fixing rods are fixedly connected to the mounting plate, and one side of the mounting plate is fixedly connected to the upper end of the side frame.

[0011] As a further technical solution of this utility model, the bottom of the mounting plate is fixedly connected to the box body, the inside of the box body is provided with a partition, and one side is provided with an exhaust port and a water inlet.

[0012] As a further technical solution of this utility model, the bottom of the box is symmetrically provided with an exhaust pipe and a water inlet pipe, the exhaust pipe is correspondingly set with the second exhaust port, and the water inlet pipe is correspondingly set with the second water inlet; the bottom of the exhaust pipe is fixedly connected to the first exhaust port; the bottom of the water inlet pipe is fixedly connected to the first water inlet.

[0013] As a further technical solution of this utility model, the exhaust port one is correspondingly provided with the bottom waste heat air inlet two; the water inlet one is correspondingly provided with the drain port two; and the water transmission pipe passes through the boiler body and connects to the inner liner.

[0014] As a further technical solution of this utility model, the bottom of the inner liner is provided with a drain outlet, which passes through the boiler body and is connected to the hot water equipment; a fixing frame is provided on the outside of the boiler body, and the fixing frame is connected to one side of the side frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the setting of the waste heat inlet and the waste heat transmission pipe allows the waste heat exhaust gas to flow in in an orderly manner, avoiding heat loss caused by airflow turbulence; the transmission water pipe is connected to the inner tank, introducing the warm water heated by the lower heat exchange device, and using the waste heat in the boiler drum for secondary heating. This secondary heating design makes full use of waste heat resources. Compared with single heating, it can raise the hot water temperature by 15-20℃, significantly improving the use value of hot water and further improving energy utilization.

[0017] 2. In this utility model, the waste heat inlet and outlet are rationally arranged to enable efficient heat exchange between waste heat and warm water; the heat exchange fin assembly is made of a special thermally conductive material, which has good thermal conductivity and can quickly transfer waste heat to warm water.

[0018] 3. In this utility model, the upper heat exchanger has an internal partition that allows for the uniform distribution of cool water, which flows into the heat exchange fin assembly in an orderly manner through the second water inlet and the water inlet pipe. The design of the second exhaust port and the exhaust pipe ensures that the waste heat gas after heat exchange is discharged smoothly. The upper heat exchanger and the lower heat exchanger work together to achieve counter-current flow heat exchange between cool water and waste heat gas. Compared with co-current flow, this design can improve the heat exchange efficiency by 30%-40%. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This utility model Figure 1 Top view.

[0021] Figure 3 This utility model Figure 2 A bottom view.

[0022] Figure 4 This utility model Figure 3 A bottom view.

[0023] Figure 5 This utility model Figure 1 A schematic diagram of the partially split structure.

[0024] Figure 6 This utility model Figure 5 The left view.

[0025] Figure 7 This utility model Figure 2 A magnified view of a portion of the image.

[0026] In the diagram: 1-installation frame, 2-waste heat recovery boiler drum, 3-lower heat exchanger, 4-upper heat exchanger;

[0027] 11-Base frame, 12-Side frame;

[0028] 21-Fixed frame, 22-Fixed base, 23-Boiler body, 24-Waste heat inlet 1, 25-Waste heat transfer pipe, 26-Transfer water pipe, 27-Inner liner, 28-Drain outlet 1;

[0029] 31-Lower fixed plate, 32-Waste heat inlet 2, 33-Drain outlet 2, 34-Heat exchange outer box, 35-Heat exchange fin assembly, 36-Upper fixed plate, 37-Water inlet 1, 38-Exhaust outlet 1, 39-Connecting rod, 310-Fixing rod;

[0030] 41-Water inlet pipe, 42-Exhaust pipe, 43-Box body, 44-Mounting plate, 45-Exhaust port two, 46-Water inlet two. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-7 In this embodiment of the utility model, a pressure vessel waste heat recovery and reuse device includes a mounting frame 1, on which a waste heat recovery and reuse boiler drum 2, a lower heat exchange device 3, and an upper heat exchange device 4 are respectively mounted; the upper end of the waste heat recovery and reuse boiler drum 2 is connected to the lower heat exchange device 3; and the upper end of the lower heat exchange device 3 is connected to the upper heat exchange device 4.

[0033] The mounting frame 1 includes a base frame 11, one end of which is fixedly connected to a side frame 12; the upper surface of the base frame 11 is fixedly connected to the boiler body 23 via a fixing seat 22, the fixing seat 22 being symmetrically arranged at the bottom of the boiler body 23; one side of the boiler body 23 is provided with a waste heat inlet 24, and the other side of the boiler body 23 is provided with a waste heat transmission pipe 25 and a transmission water pipe 26, the other end of which is fixedly connected to a waste heat inlet 32.

[0034] The other end of the transmission water pipe 26 is fixedly connected to the drain outlet 33; the waste heat inlet 32 ​​and the drain outlet 33 are both located at the bottom of the lower fixed plate 31, the upper end of the lower fixed plate 31 is connected to the heat exchange fin assembly 35, and the upper end of the heat exchange fin assembly 35 is connected to the upper fixed plate 36; a heat exchange outer box 34 is fixedly installed between the lower fixed plate 31 and the upper fixed plate 36.

[0035] By adopting the above technical solution, the waste heat inlet 2 32 and the drain outlet 2 33 are reasonably arranged, so that the waste heat exhaust gas and warm water can exchange heat efficiently; the heat exchange fin assembly 35 is made of special thermally conductive material, which has good thermal conductivity and can quickly transfer waste heat to warm water.

[0036] The upper surface of the upper fixing plate 36 is provided with a water inlet 37 and an exhaust port 38 respectively; the lower fixing plate 31, the upper fixing plate 36 and the heat exchange outer box 34 are connected by multiple connecting rods 39 and multiple fixing rods 310; one side of the lower fixing plate 31 is fixedly connected to one side of the lower end of the side frame 12.

[0037] In this embodiment, the upper ends of the plurality of connecting rods 39 and the plurality of fixing rods 310 are fixedly connected to the mounting plate 44, and one side of the mounting plate 44 is fixedly connected to the upper end of the side frame 12.

[0038] The bottom of the mounting plate 44 is fixedly connected to the box body 43. The box body 43 has a partition inside, and an exhaust port 45 and a water inlet 46 are respectively provided on one side.

[0039] The bottom of the box 43 is symmetrically provided with an exhaust pipe 42 and a water inlet pipe 41. The exhaust pipe 42 is correspondingly arranged with the second exhaust port 45, and the water inlet pipe 41 is correspondingly arranged with the second water inlet 46. The bottom of the exhaust pipe 42 is fixedly connected to the first exhaust port 38. The bottom of the water inlet pipe 41 is fixedly connected to the first water inlet 37.

[0040] By adopting the above technical solution, the upper heat exchanger 4 has a partition inside the housing 43, which allows the cool water to be evenly distributed and flow into the heat exchange fin assembly 35 in an orderly manner through the second water inlet 46 and the water inlet pipe 41; the design of the second exhaust port 45 and the exhaust pipe 42 ensures that the waste heat gas after heat exchange is smoothly discharged; the upper heat exchanger 4 works in conjunction with the lower heat exchanger to realize the counter-current flow heat exchange between cool water and waste heat gas. Compared with the forward flow, this design can improve the heat exchange efficiency by 30%-40%.

[0041] In this embodiment, the exhaust port 38 is correspondingly set with the bottom waste heat air inlet 32; the water inlet 37 is correspondingly set with the drain port 33; and the water transmission pipe 26 passes through the boiler body 23 and connects to the inner liner 27.

[0042] The inner liner 27 has a drain outlet 28 at the bottom, which passes through the boiler body 23 and is connected to the hot water equipment; the boiler body 23 has a fixing frame 21 on the outside, which is connected to one side of the side frame 12.

[0043] By adopting the above technical solution, the waste heat inlet 24 and the waste heat transmission pipe 25 are set up to allow waste heat exhaust gas to flow in in an orderly manner, avoiding heat loss caused by airflow turbulence; the transmission water pipe 26 is connected to the inner tank 27 to introduce the warm water heated by the lower heat exchange device 3, and use the waste heat in the boiler body 23 for secondary heating. This secondary heating design makes full use of waste heat resources. Compared with single heating, it can raise the hot water temperature by 15-20℃, significantly improve the use value of hot water, and further improve energy utilization.

[0044] The working principle of this utility model is as follows: the base frame 11 of the mounting frame 1 is firmly connected to the side frame 12, providing solid support for the whole. The fixed seats 22 symmetrically distributed on the base frame 11 firmly fix the pot body 23, ensuring its stable operation.

[0045] The flow path of the waste heat exhaust gas begins at the waste heat inlet 24, enters the boiler drum body 23, undergoes preliminary preheating inside, and is then guided by the waste heat transfer pipe 25, reaching the heat exchange fin assembly 35 of the lower heat exchange device 3 through the waste heat inlet 32. Simultaneously, cool water is injected into the housing 43 of the upper heat exchange device 4 from the water inlet 46. The partition design within the housing 43 ensures orderly water flow. The cool water enters the heat exchange fin assembly 35 through the water inlet pipe 41 and the water inlet 37, where it interacts with the waste heat exhaust gas. Countercurrent flow between the fins enables efficient heat exchange. After heat exchange, the waste heat exhaust gas enters the housing 43 for buffering through exhaust port 38 and exhaust pipe 42, and is finally discharged from exhaust port 45. Meanwhile, the cool water absorbs heat and becomes warm water, which enters the inner tank 27 of the boiler body 23 through drain port 33 and water transmission pipe 26. The inner tank 27 is reheated by the waste heat in the boiler body 23, and the hot water is finally transported to the hot water equipment through drain port 28, realizing the deep utilization of waste heat.

[0046] The waste heat inlet 24 and waste heat transmission pipe 25 ensure the orderly flow of waste heat gas, preventing heat loss caused by turbulent airflow. The water transmission pipe 26 connects to the inner tank 27, introducing warm water heated by the lower heat exchanger 3 for secondary heating using the waste heat within the boiler drum 23. This secondary heating design fully utilizes waste heat resources, increasing the hot water temperature by 15-20°C compared to single heating, significantly improving the usability of the hot water and further enhancing energy efficiency.

[0047] The waste heat inlet 2 32 and outlet 2 33 are rationally arranged to enable efficient heat exchange between waste heat gas and warm water; the heat exchange fin assembly 35 is made of a special thermally conductive material, which has good thermal conductivity and can quickly transfer waste heat to warm water.

[0048] The upper heat exchanger 4 has a partition inside the housing 43, which allows the cool water to be evenly distributed and flow into the heat exchange fin assembly 35 in an orderly manner through the second water inlet 46 and the water inlet pipe 41. The design of the second exhaust port 45 and the exhaust pipe 42 ensures that the waste heat gas after heat exchange is smoothly discharged. The upper heat exchanger 4 works in conjunction with the lower heat exchanger to realize the counter-current flow heat exchange between cool water and waste heat gas. Compared with the forward flow, this design can improve the heat exchange efficiency by 30%-40%.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure vessel waste heat recovery and reuse device, characterized in that: include The mounting frame (1) is equipped with a waste heat recovery boiler drum (2), a lower heat exchanger (3) and an upper heat exchanger (4); the upper end of the waste heat recovery boiler drum (2) is connected to the lower heat exchanger (3); the upper end of the lower heat exchanger (3) is connected to the upper heat exchanger (4). The mounting frame (1) includes a base frame (11), one end of which is fixedly connected to a side frame (12); the upper surface of the base frame (11) is fixedly connected to the boiler body (23) via a fixing seat (22), the fixing seat (22) is symmetrically arranged at the bottom of the boiler body (23), one side of the boiler body (23) is provided with a waste heat inlet (24), and the other side of the boiler body (23) is provided with a waste heat transmission pipe (25) and a transmission water pipe (26), the other end of which is fixedly connected to a waste heat inlet (32); The other end of the transmission water pipe (26) is fixedly connected to the drain outlet (33); the waste heat inlet (32) and the drain outlet (33) are both located at the bottom of the lower fixed plate (31), the upper end of the lower fixed plate (31) is connected to the heat exchange fin assembly (35), and the upper end of the heat exchange fin assembly (35) is connected to the upper fixed plate (36); a heat exchange outer box (34) is fixedly installed between the lower fixed plate (31) and the upper fixed plate (36).

2. The pressure vessel waste heat recovery and reuse device according to claim 1, characterized in that: The upper surface of the upper fixing plate (36) is provided with a water inlet (37) and an exhaust port (38); the lower fixing plate (31), the upper fixing plate (36) and the heat exchange outer box (34) are connected by multiple connecting rods (39) and multiple fixing rods (310); one side of the lower fixing plate (31) is fixedly connected to one side of the lower end of the side frame (12).

3. The pressure vessel waste heat recovery and reuse device according to claim 2, characterized in that: The upper ends of the multiple connecting rods (39) and multiple fixing rods (310) are fixedly connected to the mounting plate (44), and one side of the mounting plate (44) is fixedly connected to the upper end of the side frame (12).

4. The pressure vessel waste heat recovery and reuse device according to claim 3, characterized in that: The bottom of the mounting plate (44) is fixedly connected to the box (43). The box (43) has a partition inside, and one side is provided with an exhaust port (45) and a water inlet (46).

5. The pressure vessel waste heat recovery and reuse device according to claim 4, characterized in that: The bottom of the box (43) is symmetrically provided with an exhaust pipe (42) and a water inlet pipe (41). The exhaust pipe (42) is correspondingly provided with exhaust port two (45), and the water inlet pipe (41) is correspondingly provided with water inlet two (46). The bottom of the exhaust pipe (42) is fixedly connected to exhaust port one (38). The bottom of the water inlet pipe (41) is fixedly connected to water inlet one (37).

6. The pressure vessel waste heat recovery and reuse device according to claim 5, characterized in that: The exhaust port 1 (38) is correspondingly set with the bottom waste heat air inlet 2 (32); the water inlet 1 (37) is correspondingly set with the drain port 2 (33); the water transmission pipe (26) passes through the boiler body (23) and connects to the inner liner (27).

7. The pressure vessel waste heat recovery and reuse device according to claim 6, characterized in that: The inner liner (27) is provided with a drain outlet (28) at the bottom, which passes through the boiler body (23) and is connected to the hot water equipment; the boiler body (23) is provided with a fixing frame (21) on the outside, which is connected to one side of the side frame (12).

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