Dry quenching circulating flue gas heat exchange device

Abstract

The utility model discloses a dry quenching circulating flue gas heat exchange device which comprises a heat exchange box, water pipes are embedded in the left side wall and the right side wall of the heat exchange box, flue gas pipes are embedded in the top and the bottom of the heat exchange box, a plurality of pore plates are fixedly installed at the inner ends of the two flue gas pipes and are evenly distributed, and a flue distribution pipe is fixedly installed in a small hole of the pore plate on the upper side. The smoke pipes are embedded in the top and the bottom of the heat exchange box, the pore plates are installed at the ends of the smoke pipes, the multiple small holes in the pore plates can be correspondingly connected with the multiple smoke distribution pipes, smoke in a traditional smoke pipe can be divided into multiple strands through the multiple smoke distribution pipes, the smoke distribution pipes can be connected with the multiple smoke distribution pipes, and therefore the smoke distribution pipes can be connected with the multiple smoke distribution pipes. And therefore, the path of the flue gas in the heat exchange box is increased, heat in the flue gas can be transferred into cooling water more easily, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This patent relates to the field of flue gas heat exchange technology, specifically a dry coke quenching circulating flue gas heat exchange device. Background Art

[0002] The dry coke quenching process is a coke quenching process that uses inert gas to cool down the red coke. During the process of cooling down the red coke, the dry quenching furnace will produce flue gas with a temperature of about 900℃ (Celsius)-980℃. In order to continuously cool down the red coke, the high-temperature flue gas will be cooled before circulating the red coke to cool it down.

[0003] The existing flue gas cooling and heat exchange device is composed of a heat exchange box, which can accommodate a flue gas pipe. The cooling water in the heat exchange box is in contact with the flue gas pipe. The heat of the flue gas in the flue gas pipe can be transferred to the cooling water. However, the flue gas pipe is a single pipe body. When the flue gas flows in the flue gas pipe, the cross-sectional area is large. The heat of the flue gas in the middle position is not easy to be transferred to the cooling water, which reduces the heat exchange efficiency. For this reason, we propose a dry quenching cycle flue gas heat exchange device. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this patent is to provide a dry quenching circulating flue gas heat exchange device. This patent embeds flue pipes at the top and bottom of the heat exchange box, and installs orifice plates at the ends of the flue pipes. The multiple small holes on the orifice plates can be connected to multiple smoke distribution pipes. The smoke in the traditional smoke pipe can be divided into multiple streams through the multiple smoke distribution pipes, thereby increasing the path of the smoke in the heat exchange box, which is more conducive to transferring the heat in the smoke to the cooling water and improving the heat exchange efficiency.

[0005] The technical solution adopted by this patent to solve its technical problems is: a dry quenching circulating flue gas heat exchange device, including a heat exchange box, the left and right side walls of the heat exchange box are embedded with water pipes, the top and bottom of the heat exchange box are embedded with flue pipes, the inner ends of the two flue pipes are fixedly installed with orifice plates, the orifice plates are multiple and evenly distributed, a smoke distribution pipe is fixedly installed in the small holes of the upper orifice plate, and the bottom end of the smoke distribution pipe is fixedly installed in the small holes of the lower orifice plate;

[0006] The heat exchange box is provided with stirring mechanisms on both the left and right sides;

[0007] The stirring mechanism includes a transverse plate, a rotating rod and a motor. There are two transverse plates, and the ends of the two transverse plates are respectively fixedly mounted on the upper and lower sides of the inner wall of the heat exchange box. A circular groove is provided on the inner side of the transverse plate, and a bearing is fixedly mounted on the inner wall of the circular groove. The upper and lower ends of the rotating rod are respectively fixedly mounted on the inner rings of the two bearings. A stirring rod is integrally formed on the side wall of the rotating rod, and a first bevel gear is fixedly mounted on the upper side of the side wall of the rotating rod. The motor is fixedly mounted on the outer wall of the heat exchange box, and the rotating shaft of the motor passes through the wall of the heat exchange box and is fixedly mounted with a second bevel gear, which is meshed with the first bevel gear.

[0008] Furthermore, a rotating sealing ring is provided in the through hole of the heat exchange box, and the rotating sealing ring is sealed on the rotating shaft of the motor.

[0009] Furthermore, the smoke distribution pipe is a copper pipe.

[0010] Furthermore, a first plate body and a second plate body are fixedly installed at the left and right ends of the inner wall of the smoke distribution pipe respectively, the first plate body and the second plate body are both multiple in number, and the right end of the first plate body and the left end of the second plate body are at a certain distance from the inner wall of the smoke distribution pipe.

[0011] Furthermore, rectangular holes are provided at both left and right ends of the inner wall of the smoke distribution pipe, and the left end of the first plate body and the right end of the second plate body are integrally formed with extension parts, and the ends of the extension parts extend to the outside of the smoke distribution pipe through the rectangular holes.

[0012] The beneficial effects of this patent are:

[0013] 1. This patent embeds flue gas pipes at the top and bottom of the heat exchanger box, and installs orifice plates at the ends of the flue gas pipes. The multiple small holes on the orifice plates can be connected to multiple smoke distribution pipes. The smoke in the traditional flue gas pipe can be divided into multiple streams through the multiple smoke distribution pipes, thereby increasing the path of the smoke in the heat exchanger box, which is more conducive to transferring the heat in the smoke to the cooling water and improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the patent structure.

[0015] Figure 2 This is a cross-sectional view of the patent structure.

[0016] Figure 3 It is a schematic diagram of the partial structure of this patent.

[0017] Explanation of the reference numerals: 1 heat exchange box, 2 water pipe, 3 flue gas pipe, 4 perforated plate, 5 smoke distribution pipe, 6 column, 7 horizontal plate, 8 bearing, 9 rotating rod, 10 stirring rod, 11 first bevel gear, 12 motor, 13 second bevel gear, 14 first plate body, 15 second plate body, 16 rectangular hole, 17 extension part. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0019] See also Figure 1 , Figure 2 and Figure 3 This is a schematic diagram of the structure of the patent, a dry quenching circulating flue gas heat exchange device, including a heat exchange box 1, the left and right side walls of the heat exchange box 1 are both embedded with water pipes 2, the top and bottom of the heat exchange box 1 are both embedded with flue pipes 3, the inner ends of the two flue pipes 3 are both fixedly installed with orifice plates 4, the orifice plates 4 are multiple and evenly distributed, the small holes of the upper orifice plate 4 are fixedly installed with a smoke distribution pipe 5, and the bottom end of the smoke distribution pipe 5 is fixedly installed in the small hole of the lower orifice plate 4;

[0020] The left water pipe 2 can be a water inlet pipe, and the right water pipe 2 can be a drain pipe.

[0021] The lower smoke pipe 3 may be a smoke inlet pipe, and the upper smoke pipe 3 may be a smoke outlet pipe.

[0022] The heat exchange box 1 is provided with stirring mechanisms 6 on both the left and right sides;

[0023] The stirring mechanism 6 includes a transverse plate 7, a rotating rod 9 and a motor 12. There are two transverse plates 7. The ends of the two transverse plates 7 are respectively fixedly mounted on the upper and lower sides of the inner wall of the heat exchange box 1. A circular groove is provided on the inner side of the transverse plate 7. A bearing 8 is fixedly mounted on the inner wall of the circular groove. The upper and lower ends of the rotating rod 9 are respectively fixedly mounted on the inner rings of the two bearings 8. A stirring rod 10 is integrally formed on the side wall of the rotating rod 9. A first bevel gear 11 is fixedly mounted on the upper side of the side wall of the rotating rod 9. The motor 12 is fixedly mounted on the outer wall of the heat exchange box 1. The rotating shaft of the motor 12 passes through the box wall of the heat exchange box 1 and is fixedly mounted with a second bevel gear 13. The second bevel gear 13 is meshed with the first bevel gear 11.

[0024] The rotation of the motor 12 can drive the rotation of the rotating rod 9 and the stirring rod 10, and the cooling water in the heat exchange box 1 can be stirred by the stirring rod 10, so that the cooling water at different positions is frequently contacted with the outer wall of the smoke distribution pipe 5, thereby improving the heat conduction efficiency.

[0025] Specifically, a rotating sealing ring is provided in the through hole of the heat exchange box 1 , and the rotating sealing ring is sealed on the rotating shaft of the motor 12 .

[0026] Specifically, the smoke distribution pipe 5 is a copper pipe.

[0027] The smoke distribution pipe 5 is a pure copper pipe body, and pure copper has excellent thermal conductivity and can improve the heat exchange effect.

[0028] Specifically, the left and right ends of the inner wall of the smoke distribution pipe 5 are respectively fixedly installed with a first plate 14 and a second plate 15, and the number of the first plate 14 and the second plate 15 is multiple. The right end of the first plate 14 and the left end of the second plate 15 are at a certain distance from the inner wall of the smoke distribution pipe 5.

[0029] like Figure 3 As shown, by providing the first plate body 14 and the second plate body 15, the travel path of the smoke in the smoke distribution pipe 5 can be increased, the upward travel speed of the smoke can be slowed down, and the heat in the smoke can be fully transferred to the external cooling water.

[0030] Specifically, rectangular holes 16 are provided at both ends of the inner wall of the smoke distribution pipe 5 , and an extension portion 17 is integrally formed at the left end of the first plate body 14 and the right end of the second plate body 15 . The end of the extension portion 17 passes through the rectangular hole 16 and extends to the outside of the smoke distribution pipe 5 .

[0031] The extension part 17 may also be made of pure copper. By extending the end of the extension part 17 into the cooling water in the heat exchange box 1, the contact area between the outer wall of the smoke distribution pipe 5 and the cooling water can be increased, thereby improving the heat exchange efficiency.

[0032] Working principle: cooling water is injected into the heat exchange box 1 through the left water pipe 2, and then the two water pipes 2 are closed. The flue gas is diverted to multiple smoke distribution pipes 5 through the bottom smoke pipe 3, and the smoke in the traditional smoke pipe 3 is divided into multiple streams, thereby increasing the path of the smoke in the heat exchange box 1, which is more conducive to the transfer of heat in the smoke to the cooling water, thereby improving the heat exchange efficiency. At the same time, the rotation of the motor 12 drives the rotation of the rotating rod 9 and the stirring rod 10, and the cooling water in the heat exchange box 1 is stirred by the stirring rod 10, which promotes the cooling water at different positions to frequently contact the outer wall of the smoke distribution pipe 5, thereby improving the heat conduction efficiency.

[0033] After a period of heat exchange, the temperature of the cooling water in the heat exchange box 1 can be detected by using a temperature sensor or by opening the box to take water for detection. When the cooling water temperature is high, the cooling water inside the heat exchange box 1 can be replaced.

[0034] It should be noted that the equipment structure and drawings of this patent mainly describe the principles of this patent. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that technical personnel in this field understand the principles of the above patent, they can clearly know the details of its power mechanism, power supply system and control system.

[0035] This patent embeds flue gas pipes at the top and bottom of the heat exchanger box, and installs orifice plates at the ends of the flue gas pipes. The multiple small holes on the orifice plates can be connected to multiple smoke distribution pipes. The smoke in the traditional flue gas pipe can be divided into multiple streams through the multiple smoke distribution pipes, thereby increasing the path of the smoke in the heat exchanger box 1, which is more conducive to transferring the heat in the smoke to the cooling water and improving the heat exchange efficiency.

[0036] In the description of this patent, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "fixed installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0037] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. CDQ circulating flue gas heat exchange device, characterized by: It comprises a heat exchange box (1), the left and right side walls of the heat exchange box (1) are both embedded with water pipes (2), the top and bottom of the heat exchange box (1) are both embedded with smoke pipes (3), the inner ends of the two smoke pipes (3) are both fixedly mounted with orifice plates (4), the orifice plates (4) are multiple and evenly distributed, a smoke distribution pipe (5) is fixedly mounted in the small holes of the orifice plate (4) on the upper side, and the bottom end of the smoke distribution pipe (5) is fixedly mounted in the small holes of the orifice plate (4) on the lower side; The heat exchange box (1) is provided with stirring mechanisms (6) on both left and right sides thereof; The stirring mechanism (6) comprises a transverse plate (7), a rotating rod (9) and a motor (12). The number of the transverse plates (7) is two. The ends of the two transverse plates (7) are respectively fixedly mounted on the upper and lower sides of the inner wall of the heat exchange box (1). A circular groove is provided on the inner side of the transverse plate (7). A bearing (8) is fixedly mounted on the inner wall of the circular groove. The upper and lower ends of the rotating rod (9) are respectively fixedly mounted on the inner rings of the two bearings (8). A stirring rod (10) is integrally formed on the side wall of the rotating rod (9). A first bevel gear (11) is fixedly mounted on the upper side of the side wall of the rotating rod (9). The motor (12) is fixedly mounted on the outer wall of the heat exchange box (1). The rotating shaft of the motor (12) passes through the box wall of the heat exchange box (1) and is fixedly mounted with a second bevel gear (13). The second bevel gear (13) meshes with the first bevel gear (11).

2. The dry quenching circulating flue gas heat exchange device according to claim 1, characterized in that: A rotating sealing ring is provided in the through hole of the heat exchange box (1), and the rotating sealing ring is sealed on the rotating shaft of the motor (12).

3. The dry quenching flue gas heat exchange device according to claim 1, characterized in that: The smoke distribution pipe (5) is a copper pipe.

4. The dry quenching flue gas heat exchange device according to claim 1, characterized in that: A first plate body (14) and a second plate body (15) are fixedly mounted on the left and right ends of the inner wall of the smoke distribution pipe (5), respectively. The first plate body (14) and the second plate body (15) are both provided in plural numbers. The right end of the first plate body (14) and the left end of the second plate body (15) are at a certain distance from the inner wall of the smoke distribution pipe (5).

5. The dry quenching flue gas heat exchange device according to claim 4, characterized in that: Rectangular holes (16) are provided at both left and right ends of the inner side wall of the smoke distribution pipe (5); the left end of the first plate body (14) and the right end of the second plate body (15) are integrally formed with an extension portion (17); the end of the extension portion (17) passes through the rectangular hole (16) and extends to the outside of the smoke distribution pipe (5).

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