High-temperature flue gas cooling device

Abstract

The utility model discloses a high-temperature flue gas cooling device, which relates to the technical field of high-temperature flue gas treatment devices, and comprises a shell, the shell is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are respectively positioned at two ends of the surface of the shell, an inner cylinder is arranged in the shell, and the lower end of the inner cylinder is a gas inlet; and an air outlet is formed in the upper end of the inner cylinder. By arranging the shell, the water inlet pipe, the water outlet pipe and the inner cylinder, a large amount of high-temperature flue gas enters the cooling cylinder and then is slowly discharged through the connecting pipe, so that the retention time of the high-temperature flue gas in the cooling cylinder can be effectively prolonged, and the heat exchange time of the high-temperature flue gas and cooling water is prolonged; and the cooling effect of the high-temperature flue gas is effectively enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature flue gas treatment device technical field, especially in kind of high temperature flue gas cooling device. BACKGROUND

[0002] High temperature flue gas is a kind of industrial waste gas produced when the melting furnace works, in order to protect the environment from pollution, such flue gas cannot be directly discharged into the environment, needs to be handled before being discharged again. Before the high temperature flue gas is handled, it needs to be cooled first to avoid damage to the handling equipment due to high temperature.

[0003] The high temperature flue gas cooling device basically uses heat exchange, but when the existing cooling device uses heat exchanger to exchange heat, the residence time of high temperature flue gas is short, which leads to incomplete heat exchange and impurities in high temperature flue gas adhering to the surface of heat exchanger, and long-term use will form dirt to reduce heat exchange efficiency, thus leading to poor cooling effect. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of high temperature flue gas cooling device, which can effectively solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of high temperature flue gas cooling device, comprising a shell, the shell is equipped with water inlet pipe and water outlet pipe, the water inlet pipe and water outlet pipe are located at the both ends of the surface of shell respectively, an inner cylinder is arranged in the shell, the inner cylinder is a hollow structure, an inner cavity is arranged between the inner cylinder and the shell, the lower end of the inner cylinder is an air inlet, and the upper end of the inner cylinder is an air outlet.

[0007] As a further scheme of the utility model, the inner cylinder comprises two corrugated pipes, both of the corrugated pipes are fixedly connected with the inner top end of the shell, the other end of the corrugated pipe is fixedly connected with a cooling cylinder, one end of the cooling cylinder is provided with a blocking disc, and a connecting pipe is embedded in the blocking disc.

[0008] As a further scheme of the utility model, the other end of the connecting pipe is fixedly connected with a collecting cylinder, and the collecting cylinder and the cooling cylinder are fixedly connected.

[0009] As a further scheme of the utility model, water storage rings are fixedly connected on the shell near the upper and lower ends respectively, and the water storage rings are fixedly connected with the water inlet pipe and the water outlet pipe respectively.

[0010] As a further scheme of the utility model, a plurality of protrusions are fixedly installed on the inner wall of the shell, and the protrusions are irregularly distributed on the inner wall of the shell.

[0011] As a further scheme of the present application, the cooling cylinder is multiple and is arrayed.

[0012] As a further scheme of the present application, the connecting pipe is located at a position away from the center of the blocking disc, and the positions of adjacent connecting pipes are symmetrical to the center axis of the blocking disc.

[0013] The present application has the following advantages:

[0014] The high-temperature flue gas is discharged slowly through the connecting pipe after entering the cooling cylinder in large quantity, so that the residence time of the high-temperature flue gas in the cooling cylinder is effectively increased, the heat exchange time of the high-temperature flue gas and the cooling water is increased, and the cooling effect of the high-temperature flue gas is effectively enhanced.

[0015] The cooling water impacts the protruding block continuously when passing through the inner cavity, so that turbulent flow is formed, the heat exchange efficiency is enhanced, the cooling cylinder is impacted, the cooling cylinder is vibrated continuously, impurities are difficult to adhere to the inner wall, and the impurities can be discharged along the collecting barrel, so that the cooling efficiency of the high-temperature flue gas is effectively improved and impurities are prevented from adhering. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the high-temperature flue gas cooling device.

[0017] Figure 2 It is a sectional structure schematic view of the high-temperature flue gas cooling device.

[0018] Figure 3 It is a sectional structure schematic view of the high-temperature flue gas cooling device. Figure 2 Part structure enlarged schematic view.

[0019] Figure 4 It is a whole structure schematic view of the high-temperature flue gas cooling device.

[0020] In the drawing: 1, air inlet; 2, inner cylinder; 3, air outlet; 4, shell; 5, inner cavity; 6, water storage ring; 7, water inlet pipe; 8, water outlet pipe; 9, protruding block; 21, corrugated pipe; 22, cooling cylinder; 23, blocking disc; 24, connecting pipe; 25, collecting barrel. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0022] Please refer to Figure 1 - Figure 4The utility model provides a high temperature flue gas cooling device, including shell 4, be provided with inner tube 2 in shell 4, be used to increase the residence time of high temperature flue gas in inner tube 2 to increase the heat exchange time of high temperature flue gas and cooling medium, so that the effect of high temperature flue gas cooling is effectively enhanced.

[0023] In this embodiment, the lower end of the inner tube 2 is the air inlet 1 for the passage of high temperature flue gas. The inner tube 2 is a hollow structure for the circulation and cooling of high temperature flue gas. The upper end of the inner tube 2 is the air outlet 3 for the discharge of cooled high temperature flue gas. The inner tube 2 includes two corrugated pipes 21. One end of the corrugated pipe 21 is fixedly connected between the shell 4 and the other end of the corrugated pipe 21 is fixedly connected to one end of the cooling cylinder 22. The other end of the cooling cylinder 22 is fixedly installed with a blocking disc 23. The blocking disc 23 is embedded with a connecting pipe 24, and the connecting pipe 24 is located away from the center of the blocking disc 23. The connecting pipe 24 is fixedly connected with a collecting cylinder 25, and the collecting cylinder 25 is fixedly connected between the cooling cylinder 22.

[0024] The high temperature flue gas enters the cooling cylinder 22 through the corrugated pipe 21 and is blocked by the blocking disc 23 to stay in the cooling cylinder 22. Then the high temperature flue gas slowly flows out of the cooling cylinder 22 through the connecting pipe 24 into another cooling cylinder 22. The cooling cylinder 22 has multiple and is arranged in a straight line array, so that the flow rate of the high temperature flue gas is continuously slowed down, thereby increasing the time of staying in the cooling cylinder 22 and enhancing the cooling effect of the high temperature flue gas. At the same time, the adjacent connecting pipes 24 are symmetrical relative to the center axis of the blocking disc 23, so that the path of the high temperature flue gas is more circular, further enhancing the residence time of the high temperature flue gas in the cooling cylinder 22.

[0025] In this embodiment, the shell 4 is fixedly installed with a water storage ring 6 near the upper and lower ends. The water storage ring 6 at the upper end is fixedly installed with a water inlet pipe 7 for the entry of the cooling medium. The water storage ring 6 at the lower end is fixedly installed with a water outlet pipe 8 for the outflow of the cooled cooling medium. The inner cavity 5 between the shell 4 and the inner tube 2 is used for the flow of the cooling medium to exchange heat with the high temperature flue gas, thereby cooling the high temperature flue gas. The cooling medium flows from top to bottom in the inner cavity 5, and the high temperature flue gas flows from bottom to top in the inner tube 2, which is in a countercurrent state, thereby improving the efficiency of heat exchange and enhancing the cooling effect.

[0026] In the embodiment, the inner wall of the shell 4 is fixedly provided with a plurality of protrusions 9, the protrusions 9 are semispherical structures, and are irregularly distributed on the inner wall of the shell 4 with different sizes, so that the cooling medium forms turbulent flow when flowing through the protrusions 9, thereby improving the heat exchange efficiency, and the cooling medium continuously impacts the outer walls of the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25, so that the outer walls of the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25 vibrate, and the whole inner cylinder 2 vibrates due to the corrugated pipes 21 at the upper and lower ends, thereby avoiding that impurities are accumulated and adsorbed on the inner walls of the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25 in the heat exchange and cooling process, the impurities are shaken off through the collecting cylinder 25 and the connecting pipe 24, and finally discharged through the air inlet 1. The collecting cylinder 25 is a circular truncated cone structure with a large upper part and a small lower part, and the upper and lower centers are not on the same axis, so that the dust cannot be accumulated.

[0027] It should be noted that the utility model is a high-temperature flue gas cooling device, when in use, high-temperature flue gas enters the cooling cylinder 22 through the air inlet 1, and after being hindered by the blocking disc 23, the high-temperature flue gas enters the next cooling cylinder 22 through the connecting pipe 24, and due to the fact that the adjacent two connecting pipes 24 are arranged relative to the blocking disc 23, the flow path of the high-temperature flue gas is longer, so that the high-temperature flue gas can be cooled for a longer time in the cooling cylinder 22.

[0028] The cooling medium is input through the water inlet pipe 7, discharged through the water outlet pipe 8 through the inner cavity 5, and the water storage ring 6 makes the flow of the cooling medium entering the inner cavity 5 larger and the flow velocity more uniform. When the cooling medium contacts the protrusions 9, the cooling medium generates turbulent flow due to the fact that the sizes and distributions of the protrusions 9 are not uniform, the heat exchange efficiency is improved, the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25 can be continuously impacted, the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25 vibrate in the working process, and impurities are prevented from adhering to the inner walls of the cooling cylinder 22, the connecting pipe 24 and the collecting cylinder 25 in the cooling process. After the cooling work is completed, the impurities can be discharged along the air inlet 1.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high temperature flue gas cooling device, characterized by: The utility model relates to a water cooling device, including shell (4), shell (4) is equipped with water inlet pipe (7) and water outlet pipe (8), water inlet pipe (7) and water outlet pipe (8) are located respectively at the both ends position of shell (4) surface, be provided with inner cylinder (2) in shell (4), the inner cylinder (2) is hollow structure, be provided with inner chamber (5) between the inner cylinder (2) with shell (4), the lower end of inner cylinder (2) is air inlet (1), the upper end of inner cylinder (2) is air outlet (3), the inner cylinder (2) includes two bellows (21), two bellows (21) all with shell (4) inside top fixedly connected, the other end of bellows (21) is fixedly connected with cooling cylinder (22), one end of cooling cylinder (22) is equipped with baffle disc (23), is embedded with connecting pipe (24) on baffle disc (23).

2. The high-temperature flue gas cooling device according to claim 1, characterized in that: The other end of connecting pipe (24) is fixedly connected with collecting cylinder (25), and collecting cylinder (25) and cooling cylinder (22) are fixedly connected.

3. The high-temperature flue gas cooling device according to claim 1, characterized in that: The upper and lower ends of shell (4) are fixedly connected with water storage rings (6), and the water storage rings (6) are fixedly connected with water inlet pipe (7) and water outlet pipe (8).

4. The high-temperature flue gas cooling device according to claim 1, characterized in that: A plurality of protrusions (9) are fixedly installed on the inner wall of shell (4).

5. The high temperature flue gas cooling device according to claim 2, characterized in that: The cooling cylinder (22) has multiple and is arrayed.

6. The high temperature flue gas cooling device according to claim 2, characterized in that: The connecting pipe (24) is located on the baffle disc (23) away from the center of the circle, and the positions of adjacent connecting pipes (24) are symmetrical to the center axis of the baffle disc (23).

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