Coke oven gas boiler waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat utilization, in particular to a coke oven gas boiler waste heat recovery device which comprises a recovery tank, a tank top cover is assembled above the recovery tank, a smoke recovery pipe and a reutilization pipe are assembled in the recovery tank, and the reutilization pipe is located on the inner side of the smoke recovery pipe. A flue gas inlet and a flue gas outlet are integrally formed in the left end and the right end of the flue gas recycling pipe correspondingly, the flue gas inlet and the flue gas outlet are assembled on the left side and the right side of the upper end of the recycling tank in an inserted mode, and a liquid inlet port and a liquid outlet port are integrally formed in the left end and the right end of the recycling pipe correspondingly. The liquid inlet end opening and the liquid outlet end opening are also assembled on the left side and the right side of the upper end of the recycling tank in an inserted mode, a stirring rod is assembled in the center of the interior of the recycling pipe in an inserted mode, a stirring frame is assembled to the lower end of the stirring rod through a connecting supporting rod in a connected mode, and the stirring frame is located between the outer side of the smoke recycling pipe and the inner wall of the recycling tank. According to the utility model, the flue gas can be conveniently introduced and fully mixed and exchanged, so that the waste heat recycling is more convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization, in particular to a waste heat recovery device for a coke oven gas boiler. Background Art

[0002] In today's increasingly tight energy landscape and increasingly stringent environmental protection requirements, improving energy efficiency, reducing energy waste, and lowering pollutant emissions have become important issues in the industrial sector. Coke oven gas, a byproduct of the coking process, has a high calorific value and is widely used in boilers to generate steam or hot water for industrial production or heating. However, coke oven gas boilers generate a large amount of waste heat during operation. If this waste heat is not effectively recovered and utilized, it will not only result in a huge waste of energy but also cause additional thermal pollution to the environment.

[0003] In this regard, China's patent application number: CN202220505824.4 discloses a gas boiler flue gas waste heat recovery device, including a boiler main body, a heat collection box is provided at the right end of the boiler main body, a processing guide block is provided at the position of the boiler main body corresponding to the heat collection box, and a heat conduction pipe is fixedly installed on the left side wall of the heat collection box. In the utility model, when the heat is conducted and stored inside the boiler main body, after the heat conduction operation is completed, the telescopic adjustment device is started to drive the telescopic adjustment rod to push the restriction ring, so that the restriction ring moves to the corresponding position of the folding adjustment block, and the multiple groups of folding adjustment blocks are snapped so that the multiple groups of folding adjustment blocks are deformed and contracted, thereby effectively blocking the heat conduction pipe, thereby greatly improving the heat storage effect inside the heat collection box;

[0004] However, the existing waste heat recovery device is not convenient to introduce flue gas for full preheating and exchange as needed, which affects the waste heat recovery efficiency;

[0005] Therefore, in order to solve the above problems, a coke oven gas boiler waste heat recovery device is proposed. Summary of the Invention

[0006] The purpose of the utility model is to provide a waste heat recovery device for a coke oven gas boiler to solve the problem in the above background technology that the existing waste heat recovery device is inconvenient to introduce flue gas for sufficient preheating and exchange as needed, which affects the waste heat recovery efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coke oven gas boiler waste heat recovery device, comprising a recovery tank, a tank top cover is installed above the recovery tank, a flue gas recovery pipe and a recycling pipe are installed inside the recovery tank, and the recycling pipe is located on the inner side of the flue gas recovery pipe, and the left and right ends of the flue gas recovery pipe are respectively integrated with a flue gas inlet and a flue gas outlet, and the flue gas inlet and the flue gas outlet are inserted and installed on the left and right sides of the upper end of the recovery tank, and the left and right ends of the recycling pipe are respectively integrated with a liquid inlet port and a liquid outlet port, and the liquid inlet port and the liquid outlet port are also inserted and installed on the left and right sides of the upper end of the recovery tank, a stirring rod is inserted and installed in the center of the recycling pipe, and the lower end of the stirring rod is connected to a stirring frame through a connecting rod, and the stirring frame is located between the outer side of the flue gas recovery pipe and the inner wall of the recovery tank.

[0008] As a further improvement of this solution, the flue gas recovery pipe and the reuse pipe are both spirally wound, and the flue gas inlet, flue gas outlet, liquid inlet port and liquid outlet port are all fixed with sealing ring covers at the assembly points of the recovery tank, and the outer ends of the flue gas inlet and flue gas outlet are equipped with maintenance covers.

[0009] As a further improvement of this solution, the outer wall of the stirring frame is integrally provided with a supporting foot, a supporting ring is fixed to the outer end of the supporting foot, and a supporting sleeve is provided on the outside of the supporting ring. The supporting sleeve is fixed to the inner wall of the recovery tank, and a groove corresponding to the supporting foot is opened on the outside of the supporting sleeve.

[0010] As a further embodiment of the present invention, the three groups of stirring racks are distributed in a triangular shape, stirring blades are fixed to the outer wall of the stirring rod, and the three groups of stirring blades are distributed in a triangular shape.

[0011] As a further improvement of this solution, an upper torsion block is fixed on the top of the stirring rod, and a transmission rod is mounted above the upper torsion block. The transmission rod is inserted through and assembled on the top of the tank top cover, and a servo motor is fixed on the top of the tank top cover. The rotating shaft end of the servo motor is connected to the upper end of the transmission rod through a coupling for transmission.

[0012] As a further improvement of this solution, a ceiling cover is suspended on the inner top wall of the tank top cover, and a bearing with a seat is installed inside the ceiling cover. The bearing with a seat is installed in the middle of the transmission rod, and a lower twist pin is integrally provided at the bottom of the transmission rod. An upper slot corresponding to the lower twist pin is opened on the top of the upper twist block.

[0013] As a further improvement of this solution, the outer wall of the recovery tank is equipped with heat insulation cotton, the outer cover of the heat insulation cotton is provided with an outer protective cover, the bottom of the recovery tank is fixed with a drain pipe, and the lower end of the drain pipe is fixed with a valve.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: the present invention facilitates the introduction and full mixing and exchange of flue gas, making waste heat recovery and utilization more convenient and efficient;

[0015] The utility model is provided with a flue gas recovery pipe and a reuse pipe, which facilitates the introduction of flue gas through the flue gas recovery pipe and then exchanges the heat of the flue gas with the liquid inside the recovery tank. Furthermore, the reuse pipe facilitates the introduction of liquid to be heated into the recovery tank, and auxiliary heating is performed by the liquid inside the recovery tank, thereby making the waste heat utilization more convenient and quick. Through this design, the convenience and practicality of the waste heat recovery device of the coke oven gas boiler are improved.

[0016] The utility model is provided with a stirring rod, which is connected by the assembly of the supporting rod with the cooperation of the stirring frame, so that the stirring rod and the stirring frame can fully stir the liquid inside the recovery tank, so that the heat exchanged to the liquid inside the recovery tank is fully dispersed, which is convenient for subsequent reuse, making operation and use more convenient and efficient. Through this design, the convenience and practicality of the coke oven gas boiler waste heat recovery device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view cross-sectional perspective diagram of the overall structure of the utility model;

[0018] Figure 2 This is a frontal perspective schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a top-view cross-sectional perspective diagram of the structure of the utility model;

[0020] Figure 4 This is a side perspective schematic diagram of the internal structure of the utility model;

[0021] In the figure: 100, recovery tank; 101, drain pipe; 102, valve; 110, tank top cover; 111, ceiling cover; 112, bearing with seat; 120, thermal insulation cotton; 130, outer protective cover; 200, flue gas recovery pipe; 201, flue gas inlet; 202, flue gas outlet; 210, recycling pipe; 211, liquid inlet port; 212, liquid outlet port; 220, sealing ring cover; 221, maintenance sleeve; 300, stirring rod; 301, stirring blade; 310, stirring frame; 311, connecting rod; 320, support ring; 321, support foot; 330, support sleeve; 340, upper torsion block; 341, upper slot; 350, transmission rod; 351, lower torsion pin; 360, servo motor; 361, coupling. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 4 , an embodiment provided by the utility model:

[0024] A coke oven gas boiler waste heat recovery device includes a recovery tank 100, a tank top cover 110 is installed above the recovery tank 100, a flue gas recovery pipe 200 and a reuse pipe 210 are installed inside the recovery tank 100, and the reuse pipe 210 is located inside the flue gas recovery pipe 200, and the left and right ends of the flue gas recovery pipe 200 are respectively integrally provided with a flue gas inlet 201 and a flue gas outlet 202, and the flue gas inlet 201 and the flue gas outlet 202 are inserted and installed at the upper end of the recovery tank 100. On the left and right sides, the recycling pipe 210 is respectively provided with a liquid inlet port 211 and a liquid outlet port 212 at both ends, and the liquid inlet port 211 and the liquid outlet port 212 are also inserted and assembled on the left and right sides of the upper end of the recovery tank 100. A stirring rod 300 is inserted and assembled in the center of the recycling pipe 210, and the lower end of the stirring rod 300 is connected to a stirring frame 310 through a connecting rod 311. The stirring frame 310 is located between the outer side of the flue gas recovery pipe 200 and the inner wall of the recovery tank 100;

[0025] As a more detailed description of this embodiment, the flue gas recovery pipe 200 and the recycling pipe 210 are both spirally wound, and the flue gas inlet 201, the flue gas outlet 202, the liquid inlet port 211 and the liquid outlet port 212 are all fixedly mounted with a sealing ring cover 220 at the insertion and assembly points of the recovery tank 100. The outer ends of the flue gas inlet 201 and the flue gas outlet 202 are mounted with a maintenance cover 221. This design facilitates the full immersion of the flue gas and the subsequent heated liquid, making subsequent recovery and utilization more convenient.

[0026] As a more detailed description of this embodiment, the outer wall of the stirring frame 310 is integrally provided with a supporting foot 321, the outer end of the supporting foot 321 is fixed with a supporting ring 320, and the outer side of the supporting ring 320 is provided with a supporting sleeve 330, which is fixed to the inner wall of the recovery tank 100. The outer side of the supporting sleeve 330 is provided with a groove corresponding to the supporting foot 321. Through this design, it is convenient to limit the support of the outer side of the stirring frame 310, which is convenient for auxiliary support during stirring, making the stirring operation more convenient;

[0027] As a more detailed description of this embodiment, the three groups of stirring racks 310 are distributed in a triangular shape, and the outer wall of the stirring rod 300 is fixed with stirring blades 301, and the three groups of stirring blades 301 are distributed in a triangular shape. Through this design, the rotation and stirring are more convenient, fast and uniform;

[0028] As a more detailed description of this embodiment, an upper torsion block 340 is fixed to the top of the stirring rod 300, and a transmission rod 350 is mounted above the upper torsion block 340. The transmission rod 350 is inserted through and assembled on the top of the tank top cover 110, and a servo motor 360 is fixed to the top of the tank top cover 110. The rotating shaft end of the servo motor 360 is connected to the upper end of the transmission rod 350 for transmission through a coupling 361. Through this design, it is convenient to drive the stirring rod 300 and the stirring frame 310 to stir the inside thereof through the transmission rotation of the servo motor 360, making operation and use more convenient;

[0029] As a more detailed description of this embodiment, a ceiling cover 111 is suspended on the top wall of the tank top cover 110, and a seat bearing 112 is assembled inside the ceiling cover 111. The seat bearing 112 is assembled in the middle of the transmission rod 350. A lower twist pin 351 is integrally provided at the bottom of the transmission rod 350, and an upper card slot 341 corresponding to the lower twist pin 351 is opened on the top of the upper twist block 340. Through this design, it is easy to insert and assemble through the lower twist pin 351 and the upper card slot 341, and it is also easy to separate, so that the opening of the tank top cover 110 is not hindered, making subsequent disassembly and use more convenient;

[0030] As a more detailed description of this embodiment, the outer wall of the recovery tank 100 is equipped with insulation cotton 120, the outer cover of the insulation cotton 120 is provided with an outer protective cover 130, the bottom of the recovery tank 100 is fixed with a drain pipe 101, and the lower end of the drain pipe 101 is fixed with a valve 102. Through this design, it is convenient to protect the enclosed cover on the outside of the recovery tank 100, making subsequent use more convenient.

[0031] Working principle: When assembling and using, the flue gas pipe is connected with the flue gas inlet 201 and the flue gas outlet 202, so that the coke oven gas boiler introduces the flue gas therein after heating, and then the heated liquid pipe is connected through the pump, and auxiliary connection is performed with the cooperation of the liquid inlet port 211 and the liquid outlet port 212, so as to facilitate the introduction of the liquid therein, thereby transferring the waste heat of the flue gas to the liquid inside the recovery tank 100, so that the liquid inside the recovery tank 100 is heated, and then the liquid inside the recovery tank 100 transfers the heat to the liquid inside the reuse pipe 210 again. When the waste heat is recovered and reused, the spiral arrangement of the flue gas recovery pipe 200 and the reuse pipe 210 allows the flue gas and the heated liquid to be heated inside the recovery tank 100. The time and area are increased, and at the same time, under the drive of the servo motor 360, the transmission rod 350 cooperates with the lower twist pin 351 and the upper groove 341 through the upper twist block 340 and the stirring rod 300, so that the stirring rod 300 and the stirring frame 310 stir the liquid inside the recovery tank 100, so that the heat temperature of the liquid inside the recovery tank 100 is more evenly distributed, making the subsequent heating of the liquid inside the recycling tube 210 more convenient and efficient. When the stirring frame 310 and the stirring rod 300 rotate, the support legs 321 and the support ring 320 are supported by the support sleeve 330, so that the rotation and stirring are more stable and convenient, making the operation more convenient. The operation ends here.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A coke oven gas boiler waste heat recovery device, comprising a recovery tank (100), wherein a tank top cover (110) is mounted above the recovery tank (100), characterized in that: The recovery tank (100) is internally equipped with a smoke recovery pipe (200) and a recycling pipe (210), and the recycling pipe (210) is located inside the smoke recovery pipe (200), and the left and right ends of the smoke recovery pipe (200) are respectively integrally provided with a smoke inlet (201) and a smoke outlet (202), and the smoke inlet (201) and the smoke outlet (202) are inserted and assembled on the left and right sides of the upper end of the recovery tank (100), and the left and right ends of the recycling pipe (210) are respectively integrally provided with a smoke inlet (201) and a smoke outlet (202). A liquid inlet port (211) and a liquid outlet port (212) are provided, and the liquid inlet port (211) and the liquid outlet port (212) are also inserted and assembled on the left and right sides of the upper end of the recovery tank (100). A stirring rod (300) is inserted and assembled in the center of the interior of the recycling pipe (210), and a stirring frame (310) is connected to the lower end of the stirring rod (300) via a connecting rod (311). The stirring frame (310) is located between the outer side of the flue gas recovery pipe (200) and the inner wall of the recovery tank (100).

2. The coke oven gas boiler waste heat recovery device according to claim 1, characterized in that: The flue gas recovery pipe (200) and the recycling pipe (210) are both spirally wound, and the flue gas inlet (201), the flue gas outlet (202), the liquid inlet port (211), the liquid outlet port (212) and the recovery tank (100) are all sleeved and fixed with a sealing ring cover (220), and the outer ends of the flue gas inlet (201) and the flue gas outlet (202) are sleeved and assembled with a maintenance cover (221).

3. The waste heat recovery device for a coke oven gas boiler according to claim 1, characterized in that: The outer wall of the stirring frame (310) is integrally provided with a supporting foot (321), the outer end of the supporting foot (321) is fixed with a supporting ring (320), and the outer side of the supporting ring (320) is provided with a supporting sleeve (330), the supporting sleeve (330) is fixed to the inner wall of the recovery tank (100), and the outer side of the supporting sleeve (330) is provided with a groove corresponding to the supporting foot (321).

4. The coke oven gas boiler waste heat recovery device according to claim 1, characterized in that: The three groups of stirring racks (310) are distributed in a triangular shape, stirring blades (301) are fixed to the outer wall of the stirring rod (300), and the three groups of stirring blades (301) are distributed in a triangular shape.

5. The waste heat recovery device for a coke oven gas boiler according to claim 1, characterized in that: An upper torsion block (340) is fixed to the top of the stirring rod (300), a transmission rod (350) is mounted on the top of the upper torsion block (340), the transmission rod (350) is inserted through and mounted on the top of the tank top cover (110), and a servo motor (360) is fixed to the top of the tank top cover (110), and the rotating shaft end of the servo motor (360) is connected to the upper end of the transmission rod (350) through a coupling (361) for transmission.

6. The coke oven gas boiler waste heat recovery device according to claim 5, characterized in that: A ceiling cover (111) is suspended on the inner top wall of the tank top cover (110), and a seat bearing (112) is installed inside the ceiling cover (111). The seat bearing (112) is installed in the middle of the transmission rod (350). A lower twist pin (351) is integrally provided at the bottom of the transmission rod (350), and an upper slot (341) corresponding to the lower twist pin (351) is opened at the top of the upper twist block (340).

7. The coke oven gas boiler waste heat recovery device according to claim 1, characterized in that: The outer wall of the recovery tank (100) is sheathed with heat-insulating cotton (120), and the outer cover of the heat-insulating cotton (120) is provided with an outer protective cover (130). A drainage pipe (101) is fixedly provided at the bottom of the recovery tank (100), and a valve (102) is fixed at the lower end of the drainage pipe (101).

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