Electric furnace high-temperature tail gas cooling device for zinc manufacturing plant

Abstract

The utility model discloses a high-temperature tail gas cooling device of an electric furnace for a zinc-making plant, which belongs to the technical field of metal smelting equipment and solves the problems that the existing device is relatively poor in cooling effect on waste gas as the waste gas is discharged from a porous cooling cylinder, is in contact with water and is immediately extruded by tail gas which subsequently enters a cooling cylinder, and comprises a cooling box, the left side of the interior of the cooling box is fixedly sleeved with a partition plate, air holes are formed in the bottom side, the left side and the right side of the partition plate, a first water inlet pipe is fixedly installed on the right side of the top face of the cooling box, a first exhaust pipe is fixedly installed on the left side of the top face of the cooling box, and the cooling box is fixedly sleeved with a cooling sleeve; the flow rate of tail gas to one side of the first exhaust pipe can be reduced through the partition plate, the purpose of prolonging the contact time of the tail gas and water in the cooling box is achieved, the cooling box can be cooled through the cooling sleeve, the situation that the temperature of the water in the cooling box is too high is avoided, and the cooling effect on the tail gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting equipment, in particular to a high-temperature tail gas cooling device for an electric furnace used in a zinc making plant. Background Art

[0002] Zinc has good calendering properties, wear resistance and corrosion resistance, and can be made into alloys with excellent physical and chemical properties with a variety of metals. The process of zinc production is the process of smelting zinc. The metal in the ore can be extracted by roasting, smelting, electrolysis and the use of chemical agents. Electric furnaces are required in the zinc smelting process, and the electric furnaces will emit high-temperature exhaust gas.

[0003] After searching, the application with patent application number CN202122744545.1 discloses a high-temperature electric furnace exhaust gas treatment device for zinc plants, which relates to the technical field of metal smelting equipment. The utility model includes a cooling cylinder, a porous cooling cylinder is arranged on the bottom side of the cooling cylinder, rotating tubes are arranged on the left and right sides of the cooling cylinder, curved tubes are fixed in the middle of the two end surfaces of the porous cooling cylinder, one end of the curved tube passes through the two side walls of the cooling cylinder respectively, and is fixedly connected to the corresponding rotating tube through a flange seat, a slave gear is fixed on the surface wall of the curved tube on the left side of the cooling cylinder, a base plate is arranged directly below the cooling cylinder, a motor is fixed on the upper end of the base plate, a main gear is fixed on the rotating shaft end of the motor, and the main gear is meshed with the slave gear, and an arc-shaped aluminum plate is fixed on the top side of the cooling cylinder;

[0004] Although the high-temperature electric furnace exhaust gas treatment device used in the zinc plant cools the exhaust gas discharged from the porous cooling tube and contacts it with water, and collects the steam through the curved aluminum plate to achieve the effect of steam recycling, the exhaust gas from the zinc plant is immediately squeezed out by the exhaust gas that subsequently enters the cooling tube after it is discharged from the porous cooling tube and contacts with water, resulting in a poor cooling effect on the exhaust gas.

[0005] Therefore, we proposed a high-temperature exhaust gas cooling device for electric furnaces used in zinc plants. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a high-temperature exhaust gas cooling device for an electric furnace in a zinc manufacturing plant, which solves the problem that the exhaust gas of the prior art is immediately squeezed out by the exhaust gas entering the cooling cylinder after being discharged from the porous cooling cylinder and contacting with water, resulting in poor cooling effect on the exhaust gas.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a high-temperature tail gas cooling device for an electric furnace in a zinc-making plant, comprising a cooling box, the right end of which is fixedly connected to an air intake pipe connected to the tail gas pipeline, and the right side of the cooling box is equipped with a porous cooling cylinder connected to the air intake pipe;

[0008] A partition is fixedly mounted on the left side of the cooling box, and air holes are provided on the bottom and left and right sides of the partition. A first water inlet pipe is fixedly mounted on the right side of the top surface of the cooling box, a first exhaust pipe is fixedly mounted on the left side of the top surface of the cooling box, and a cooling sleeve is fixedly mounted on the outside of the cooling box.

[0009] Preferably, a solenoid valve is fixedly installed on the first water inlet pipe, and the first water inlet pipe is connected to a water source, wherein whether water flows inside the first water inlet pipe can be controlled by the solenoid valve.

[0010] Preferably, there are five evenly distributed partitions, one end of the porous cooling tube is fixedly mounted on the side wall of the cooling box, and the other end of the porous cooling tube is fixedly mounted on the partition adjacent to it, wherein the exhaust gas entering the cooling box can be blocked by the five partitions, so that the exhaust gas can only flow through the air holes in the direction of the first exhaust pipe, thereby increasing the time that the exhaust gas stays in the cooling box.

[0011] Preferably, a second water inlet pipe connected to a water source is fixedly installed on the side wall of the cooling jacket, and a second exhaust pipe is fixedly installed on the top surface of the cooling jacket, wherein the second water inlet pipe facilitates the injection of water into the interior of the cooling jacket, and the second exhaust pipe facilitates the discharge of steam generated by the high temperature of the water inside the cooling jacket.

[0012] Preferably, the second exhaust pipe is connected to the heating pipe through a one-way valve, wherein the temperature in the heating pipe can be increased by steam to facilitate recycling of the steam engine, thereby achieving the purpose of utilizing the waste heat of the exhaust gas, and the one-way valve can prevent steam reflux from occurring.

[0013] The utility model provides a high-temperature tail gas cooling device for an electric furnace used in a zinc production plant. It has the following beneficial effects:

[0014] 1. The high-temperature tail gas cooling device for the electric furnace of the zinc plant can slow down the flow rate of the tail gas to the side of the first exhaust pipe through the partition, so that the tail gas can only flow to the direction of the first exhaust pipe through the air vent, thereby achieving the purpose of increasing the contact time between the tail gas and the water body inside the cooling box, and the cooling box can be cooled by the cooling sleeve, avoiding the situation that the water body temperature inside the cooling box is too high, which is beneficial to improving the cooling effect of the tail gas, and solves the problem that the existing device will be squeezed out by the tail gas that enters the cooling cylinder immediately after the exhaust gas is discharged from the porous cooling cylinder and contacts with water, resulting in poor cooling effect on the exhaust gas;

[0015] 2. The zinc plant uses an electric furnace high-temperature exhaust gas cooling device. By connecting the second exhaust pipe with the heating pipe, the steam generated by the high temperature water inside the cooling jacket will be discharged into the heating pipe through the second exhaust pipe, thereby increasing the temperature inside the heating pipe, so as to facilitate the recycling of the steam engine and achieve the purpose of utilizing the waste heat of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cooling box structure of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the cooling box of the utility model;

[0019] Figure 4 This is a schematic diagram of the partition and porous cooling cylinder structure of the utility model;

[0020] Figure 5 It is a side structural schematic diagram of the utility model.

[0021] In the figure: 1. cooling box; 11. air inlet pipe; 12. porous cooling tube; 13. partition; 14. air vent; 15. first water inlet pipe; 16. first exhaust pipe; 2. cooling jacket; 21. second water inlet pipe; 22. second exhaust pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0023] like Figure 1-4As shown: it includes a cooling box 1, the right end of the cooling box 1 is fixedly connected to an intake pipe 11 connected to the exhaust pipe, the right side of the cooling box 1 is equipped with a porous cooling tube 12 connected to the intake pipe 11, the left side of the cooling box 1 is fixedly sleeved with a partition 13, the bottom side and the left and right sides of the partition 13 are provided with air holes 14, the right side of the top surface of the cooling box 1 is fixedly installed with a first water inlet pipe 15, the left side of the top surface of the cooling box 1 is fixedly installed with a first exhaust pipe 16, the outside of the cooling box 1 is fixedly sleeved with a cooling sleeve 2, the first water inlet pipe 15 is fixedly installed with a solenoid valve, the first water inlet pipe 15 is connected to a water source, the partition 13 is evenly distributed, and one end of the porous cooling tube 12 is fixed The multi-porous cooling tube 12 is installed on the side wall of the cooling box 1, and the other end of the multi-porous cooling tube 12 is fixedly installed on the partition 13 adjacent thereto. The partition 13 can slow down the flow rate of the exhaust gas to the first exhaust pipe 16, so that the exhaust gas can only flow to the first exhaust pipe 16 through the air vents 14, thereby increasing the contact time between the exhaust gas and the water body inside the cooling box 1. The cooling box 1 can be cooled by the cooling sleeve 2, thereby avoiding the situation where the water body temperature inside the cooling box 1 is too high, which is beneficial to improving the cooling effect of the exhaust gas. The problem of the existing device that the exhaust gas is immediately squeezed out by the exhaust gas that subsequently enters the cooling tube after being discharged from the multi-porous cooling tube and contacting with water, and the cooling effect of the exhaust gas is poor; Example 2

[0024] like Figure 1 As shown: a second water inlet pipe 21 connected to a water source is fixedly installed on the side wall of the cooling jacket 2, and a second exhaust pipe 22 is fixedly installed on the top surface of the cooling jacket 2. The second exhaust pipe 22 is connected to the heating pipe through a one-way valve. By connecting the second exhaust pipe 22 with the heating pipe, the steam generated by the high temperature of the water inside the cooling jacket 2 will be discharged into the heating pipe through the second exhaust pipe 22, thereby increasing the temperature in the heating pipe, so as to facilitate the recycling of the steam engine, thereby achieving the purpose of utilizing the waste heat of the exhaust gas.

[0025] The working principle and use process of the utility model are as follows: when the high-temperature exhaust gas cooling device of the electric furnace used in the zinc manufacturing plant is used, water is filled into the interior of the cooling box 1 through the first water inlet pipe 15, and then water is injected into the interior of the cooling sleeve 2 through the second water inlet pipe 21. When the exhaust gas enters the interior of the porous cooling tube 12 through the air inlet pipe 11, the exhaust gas is emitted from the porous cooling tube 12, and then contacts with the water inside the cooling box 1 for cooling. The flow rate of the exhaust gas to the side of the first exhaust pipe 16 can be slowed down by the partition 13. The exhaust gas needs to pass through the air holes 14 on the five partitions 13 in turn before it can be discharged through the first exhaust pipe 16, thereby increasing the contact time between the exhaust gas and the water. The cooling box 1 can be cooled by the cooling sleeve 2, thereby avoiding the situation where the temperature of the water inside the cooling box 1 is too high, and the steam generated by the high temperature of the water inside the cooling sleeve 2 will be discharged into the heating pipe through the second exhaust pipe 22.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-temperature tail gas cooling device for an electric furnace in a zinc production plant, comprising a cooling box (1), the right end of the cooling box (1) being fixedly connected to an air intake pipe (11) connected to an tail gas pipeline, and the right side of the cooling box (1) being equipped with a porous cooling cylinder (12) connected to the air intake pipe (11); Features: A partition plate (13) is fixedly mounted on the left side of the interior of the cooling box (1), and ventilation holes (14) are provided on the bottom side and left and right sides of the partition plate (13). A first water inlet pipe (15) is fixedly mounted on the right side of the top surface of the cooling box (1), and a first exhaust pipe (16) is fixedly mounted on the left side of the top surface of the cooling box (1). A cooling sleeve (2) is fixedly mounted on the outside of the cooling box (1).

2. The high-temperature tail gas cooling device for an electric furnace for a zinc production plant according to claim 1, characterized in that: A solenoid valve is fixedly mounted on the first water inlet pipe (15), and the first water inlet pipe (15) is connected to a water source.

3. The high-temperature tail gas cooling device for an electric furnace for a zinc production plant according to claim 1, characterized in that: A total of five evenly distributed partitions (13) are provided, one end of the porous cooling tube (12) is fixedly mounted on the side wall of the cooling box (1), and the other end of the porous cooling tube (12) is fixedly mounted on the partition (13) adjacent thereto.

4. The high-temperature tail gas cooling device for an electric furnace for a zinc production plant according to claim 1, characterized in that: A second water inlet pipe (21) connected to a water source is fixedly mounted on the side wall of the cooling jacket (2), and a second exhaust pipe (22) is fixedly mounted on the top surface of the cooling jacket (2).

5. The high-temperature tail gas cooling device for an electric furnace used in a zinc production plant according to claim 4, characterized in that: The second exhaust pipe (22) is connected to the heating pipe via a one-way valve.

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