Explosion-proof pressure relief device of pyrometallurgy zinc cooler

Abstract

The utility model relates to the technical field of non-ferrous metallurgy, and discloses an anti-explosion pressure relief device of a pyrometallurgy zinc cooler, which comprises a cooling compartment, a water tank is arranged at the top of the cooling compartment, an air inlet pipe is fixedly connected to the bottom of the inner wall of the water tank and extends into the cooling compartment, and a pressure relief valve is arranged on the air inlet pipe. The bottom of the inner wall of the water tank is fixedly connected with an air outlet pipe, and the bottom of the inner wall of the water tank is fixedly connected with an anti-explosion pipe. The anti-explosion device has the advantages that the anti-rust layer and the waterproof layer protect the liquid sealing cap, when the pressure of gas contained in the cooling compartment is too high, the gas flows upwards along a gap channel between the outer wall of the water return pipe and the anti-explosion pipe and enters a cavity formed by water and the liquid sealing cap through a sawtooth layer channel on the upper edge of the anti-explosion pipe, and the anti-explosion effect is achieved. And along with the rise of the pressure, the liquid seal cap is jacked up and separated from the water surface to complete explosion-proof pressure relief operation, so that flue gas can be effectively cooled, the bag type dust collector is prevented from being burnt out, the cooling effect is good, and the safety performance is high.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metallurgy, in particular to an explosion-proof pressure relief device for a pyrometallurgical zinc smelting cooler. Background Art

[0002] With the implementation of my country's dual-carbon economic policy and the increasing promotion of photovoltaic green energy, electric furnace zinc smelting, as an efficient and clean smelting process, has attracted more and more attention and favor. However, during the zinc smelting process, the high-temperature zinc vapor and CO in the furnace are condensed by the condenser, and the cooler reduces the temperature to 250℃~550℃. This flue gas needs to be cooled to below 250℃ before it can enter the subsequent bag dust collector. Industry insiders use different measures to suppress the occurrence of explosion events, but there are shortcomings such as insufficient sealing, poor safety performance, and complex equipment.

[0003] In the prior art, Chinese Patent Publication No. CN202023196734.1 discloses an explosion-proof pressure relief device for an electric furnace gas system, comprising a furnace body, an explosion-proof cover body is arranged on the top of the furnace body, a ring frame is sleeved on the top of the outer surface of the furnace body, a through hole is opened at the bottom of the outer surface of the explosion-proof cover body, a steel wire rope is fixedly connected to the top of the explosion-proof cover body, the number of the through holes is multiple, and the surface of the steel wire rope is sleeved with a guide ring. The existing explosion-proof device for electric furnaces solves the problem that a hole is opened on the furnace cover and a cover is made of iron plate to cover the hole. Once the electric furnace collapses or the pressure in the furnace increases, the explosion-proof cover will be blown away, which is easy to injure people. In addition, people need to go up to the furnace cover to cover the explosion-proof cover after the electric furnace is powered off, which is easy to cause collapse and injure people again, and also affects the condition of the electric furnace.

[0004] However, when the utility model is actually used, the device adopts water for liquid sealing and explosion prevention, and does not have the function of cooling the flue gas to prevent explosion. Because cooling is an effective measure for explosion prevention, and during pyrometallurgical zinc smelting, since the flue gas usually has to pass through a bag dust collector eventually, if the flue gas is not cooled, it is easy to cause the bag dust collector to burn out, so improvement is needed. Utility Model Content

[0005] The utility model aims to provide an explosion-proof pressure relief device for a pyrometallurgical zinc smelting cooler, which has the effects of good cooling effect, strong safety performance and simple device.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: an explosion-proof pressure relief device for a pyrometallurgical zinc smelting cooler, comprising a cooling chamber, a water trough is arranged on the top of the cooling chamber, an air inlet pipe is fixedly connected to the bottom of the inner wall of the water trough, the air inlet pipe extends to the interior of the cooling chamber, an air outlet pipe is fixedly connected to the bottom of the inner wall of the water trough, an explosion-proof pipe is fixedly connected to the bottom of the inner wall of the water trough, a return pipe is inserted into the inner wall of the explosion-proof pipe, a liquid sealing cap is fixedly connected to the top of the return pipe, a serrated layer is fixedly connected to the top of the explosion-proof pipe, a water inlet pipe is arranged inside the return pipe, a protective layer is fixedly connected to the bottom of the inner wall of the water trough, an anti-rust layer is fixedly connected to the outer surface of the liquid sealing cap, and a waterproof layer is fixedly connected to the outer surface of the anti-rust layer.

[0007] By adopting the above technical scheme, when in use, the flue gas is introduced into the air inlet pipe, and the flue gas enters the cooling chamber. The top of the water inlet pipe is connected to the water pipe, so that water enters the water inlet pipe, and enters the return pipe along the water inlet pipe. The water flows upward along the return pipe into the water tank, the air inlet pipe and the return pipe, thereby completing the cooling of the flue gas. The serrated layer supports the bottom of the liquid seal cap, and the anti-rust layer and the waterproof layer protect the liquid seal cap to avoid rust damage and increase the service life. When the gas pressure in the cooling chamber is too high, the gas will go upward along the gap channel between the outer wall of the return pipe and the explosion-proof pipe, and enter the cavity formed by water and the liquid seal cap through the serrated layer channel on the upper edge of the explosion-proof pipe. As the pressure increases, the liquid seal cap is lifted up and separated from the water surface to complete the explosion-proof pressure relief operation, thereby effectively cooling the flue gas and avoiding the burning of the bag dust collector. The cooling effect is good and the safety performance is strong.

[0008] The utility model is further configured as follows: a conical ash hopper is fixedly connected to the bottom of the cooling chamber, and an ash discharge valve is arranged at the bottom of the conical ash hopper.

[0009] By adopting the above technical solution, the cooled fly ash enters the conical ash hopper, and the ash discharge valve facilitates the discharge of the conical ash hopper.

[0010] The utility model is further configured as follows: an overflow port is provided on the outer surface of the water tank, and the overflow port is in a rectangular shape.

[0011] By adopting the above technical solution, the overflow port is convenient for draining the sink, and the horizontal line of the side lower edge of the liquid sealing cap needs to be 5mm to 10mm lower than the horizontal plane of the overflow port.

[0012] The utility model is further configured as follows: a heat-conducting layer is fixedly connected to the inner wall of the water return pipe, and a heat-dissipating layer is fixedly connected to the outer surface of the water return pipe.

[0013] By adopting the above technical solution, the heat-conducting layer and the heat-dissipating layer improve the heat exchange efficiency of the return pipe, which is beneficial to the cooling of the flue gas.

[0014] The utility model is further configured as follows: a high temperature resistant layer is fixedly connected to the inner wall of the air intake pipe, and a wear resistant layer is fixedly connected to the inner wall of the high temperature resistant layer.

[0015] By adopting the above technical solution, the high temperature resistant layer prevents the high temperature of the smoke from damaging the intake pipe, and the wear-resistant layer makes it wear-resistant.

[0016] The utility model is further configured as follows: the number of the conical ash hoppers is two, and the sizes of the two conical ash hoppers are equal.

[0017] By adopting the above technical solution, the two conical ash hoppers are connected to each other and have the same function.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model, through the coordinated arrangement of the cooling compartment, the water tank, the air inlet pipe, the air outlet pipe, the explosion-proof pipe, the water return pipe, the liquid sealing cap, the serrated layer, the water inlet pipe, the protective layer, the anti-rust layer and the waterproof layer, can make the device in use, when in use, the air inlet pipe passes into the smoke, the smoke enters the cooling compartment, the top of the water inlet pipe is connected to the water pipe, so that water enters the water inlet pipe, and enters the water return pipe along the water inlet pipe, and the water flows upward along the water return pipe into the water tank, the air inlet pipe and the water return pipe, so as to complete the cooling of the smoke, and the serrated layer supports the liquid sealing cap. At the bottom, the anti-rust layer and the waterproof layer protect the liquid sealing cap to avoid rust damage and increase its service life. When the gas pressure in the cooling chamber is too high, the gas will go upward along the gap channel between the outer wall of the return pipe and the explosion-proof pipe, and enter the cavity formed by water and the liquid sealing cap through the serrated layer channel on the upper edge of the explosion-proof pipe. As the pressure increases, the liquid sealing cap will be lifted up and separated from the water surface to complete the explosion-proof pressure relief operation, thereby effectively cooling the flue gas and avoiding the burning of the bag dust collector. It has good cooling effect and strong safety performance.

[0020] 2. The utility model, through the coordinated arrangement of the conical ash hopper, the ash discharge valve, the overflow port, the heat conduction layer, the heat dissipation layer, the high temperature resistant layer and the wear-resistant layer, can enable the cooled ash to enter the conical ash hopper when the device is in use, the ash discharge valve facilitates the discharge of the conical ash hopper, the overflow port facilitates the drainage of the sink, the heat conduction layer and the heat dissipation layer improve the heat exchange efficiency of the return pipe and are beneficial to the cooling of the flue gas, the high temperature resistant layer prevents the high temperature of the flue gas from damaging the intake pipe, and the wear-resistant layer makes it wear-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the water tank of the utility model;

[0024] Figure 3 This is a schematic diagram of the sawtooth layer structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the waterproof layer structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the heat dissipation layer structure of the utility model.

[0027] In the figure, 1. cooling compartment; 2. water tank; 3. air inlet pipe; 4. air outlet pipe; 5. explosion-proof pipe; 6. return pipe; 7. liquid sealing cap; 8. serrated layer; 9. water inlet pipe; 10. protective layer; 11. anti-rust layer; 12. waterproof layer; 13. conical ash hopper; 14. ash discharge valve; 15. overflow port; 16. thermal conductive layer; 17. heat dissipation layer; 18. high temperature resistant layer; 19. wear-resistant layer. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0029] Reference Figure 1-5, an explosion-proof pressure relief device for a pyrometallurgical zinc smelting cooler, comprising a cooling chamber 1, a water tank 2 is arranged on the top of the cooling chamber 1, an air inlet pipe 3 is fixedly connected to the bottom of the inner wall of the water tank 2, the air inlet pipe 3 extends to the interior of the cooling chamber 1, an air outlet pipe 4 is fixedly connected to the bottom of the inner wall of the water tank 2, an explosion-proof pipe 5 is fixedly connected to the bottom of the inner wall of the water tank 2, a return pipe 6 is plugged into the inner wall of the explosion-proof pipe 5, a liquid sealing cap 7 is fixedly connected to the top of the return pipe 6, a serrated layer 8 is fixedly connected to the top of the explosion-proof pipe 5, a water inlet pipe 9 is arranged inside the return pipe 6, a protective layer 10 is fixedly connected to the bottom of the inner wall of the water tank 2, an anti-rust layer 11 is fixedly connected to the outer surface of the liquid sealing cap 7, and an anti-rust layer 12 is fixedly connected to the outer surface of the anti-rust layer 13. The outer surface of the rust layer 11 is fixedly connected with a waterproof layer 12. When in use, the air inlet pipe 3 introduces smoke, and the smoke enters the cooling chamber 1. The top of the water inlet pipe 9 is connected to the water pipe, so that water enters the water inlet pipe 9, and enters the return pipe 6 along the water inlet pipe 9. The water flows upward along the return pipe 6 into the water tank 2, the air inlet pipe 3 and the return pipe 6 to complete the cooling of the smoke. The serrated layer 8 supports the bottom of the liquid sealing cap 7. The anti-rust layer 11 and the waterproof layer 12 protect the liquid sealing cap 7 to avoid rust damage and increase the service life. When the gas pressure in the cooling chamber 1 is too high, the gas will go upward along the gap channel between the outer wall of the return pipe 6 and the explosion-proof pipe 5, and pass through The serrated layer 8 on the upper edge of the explosion-proof pipe 5 enters into the cavity formed by water and the liquid sealing cap 7. As the pressure increases, the liquid sealing cap 7 is lifted up and separated from the water surface to complete the explosion-proof pressure relief operation, thereby effectively cooling the flue gas to avoid burning of the bag filter. The cooling effect is good and the safety performance is strong. A conical ash hopper 13 is fixedly connected to the bottom of the cooling chamber 1. An ash discharge valve 14 is provided at the bottom of the conical ash hopper 13. The cooled ash enters the conical ash hopper 13. The ash discharge valve 14 facilitates the discharge of the conical ash hopper 13. An overflow port 15 is provided on the outer surface of the water tank 2. The overflow port 15 is rectangular in shape. The overflow port 15 is convenient for draining the water tank 2. The lower side of the liquid sealing cap 7 The horizontal line needs to be 5mm to 10mm lower than the horizontal plane of the overflow port 15. The inner wall of the return pipe 6 is fixedly connected with a heat conducting layer 16, and the outer surface of the return pipe 6 is fixedly connected with a heat dissipation layer 17. The heat conducting layer 16 and the heat dissipation layer 17 improve the heat exchange efficiency of the return pipe 6, which is beneficial to the cooling of the flue gas. The inner wall of the intake pipe 3 is fixedly connected with a high temperature resistant layer 18, and the inner wall of the high temperature resistant layer 18 is fixedly connected with a wear-resistant layer 19. The high temperature resistant layer 18 prevents the high temperature of the flue gas from damaging the intake pipe 3, and the wear-resistant layer 19 makes it wear-resistant. There are two conical ash hoppers 13, and the sizes of the two conical ash hoppers 13 are equal. The two conical ash hoppers 13 are connected to each other and have the same function.

[0030] In the utility model, through the coordinated arrangement among the cooling chamber 1, the water tank 2, the air inlet pipe 3, the air outlet pipe 4, the explosion-proof pipe 5, the water return pipe 6, the liquid sealing cap 7, the serrated layer 8, the water inlet pipe 9, the protective layer 10, the anti-rust layer 11 and the waterproof layer 12, the device can be used when the air inlet pipe 3 is used to pass the smoke, the smoke enters the cooling chamber 1, the top of the water inlet pipe 9 is connected to the water delivery pipe, so that water enters the water inlet pipe 9, enters the water return pipe 6 along the water inlet pipe 9, and flows upward along the water return pipe 6 into the water tank 2, the air inlet pipe 3 and the water return pipe 6 to complete the cooling of the smoke, the serrated layer 8 supports the bottom of the liquid sealing cap 7, the anti-rust layer 11 and the waterproof layer 12 protect the liquid sealing cap 7 to avoid rust damage and improve the service life, when the gas pressure contained in the cooling chamber 1 is too high, the gas will pass through the gap between the outer wall of the water return pipe 6 and the explosion-proof pipe 5 The ash is then discharged through the hopper 13 and the ash is then discharged through the hopper 13. The ash is then discharged through the hopper 13 and the ash is then discharged through the hopper 13. The ash is then discharged through the hopper 13 and the ash is then discharged through the hopper 13. The ash is then discharged through the hopper 13 and the ash is then discharged through the hopper 13.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof pressure relief device for a pyrometallurgical zinc smelting cooler, comprising a cooling chamber (1), characterized in that: A water trough (2) is arranged on the top of the cooling compartment (1), an air inlet pipe (3) is fixedly connected to the bottom of the inner wall of the water trough (2), the air inlet pipe (3) extends to the interior of the cooling compartment (1), an air outlet pipe (4) is fixedly connected to the bottom of the inner wall of the water trough (2), an explosion-proof pipe (5) is fixedly connected to the bottom of the inner wall of the water trough (2), a return pipe (6) is inserted into the inner wall of the explosion-proof pipe (5), a liquid sealing cap (7) is fixedly connected to the top of the return pipe (6), a serrated layer (8) is fixedly connected to the top of the explosion-proof pipe (5), an inlet pipe (9) is arranged inside the return pipe (6), a protective layer (10) is fixedly connected to the bottom of the inner wall of the water trough (2), an anti-rust layer (11) is fixedly connected to the outer surface of the liquid sealing cap (7), and a waterproof layer (12) is fixedly connected to the outer surface of the anti-rust layer (11).

2. The explosion-proof pressure relief device of a pyrometallurgical zinc smelting cooler according to claim 1, characterized in that: A conical ash hopper (13) is fixedly connected to the bottom of the cooling chamber (1), and an ash discharge valve (14) is provided at the bottom of the conical ash hopper (13).

3. The explosion-proof pressure relief device of a pyrometallurgical zinc smelting cooler according to claim 1, characterized in that: An overflow port (15) is provided on the outer surface of the water tank (2), and the overflow port (15) is in a rectangular shape.

4. The explosion-proof pressure relief device of a pyrometallurgical zinc smelting cooler according to claim 1, characterized in that: The inner wall of the water return pipe (6) is fixedly connected to a heat conducting layer (16), and the outer surface of the water return pipe (6) is fixedly connected to a heat dissipating layer (17).

5. The explosion-proof pressure relief device of a pyrometallurgical zinc smelting cooler according to claim 1, characterized in that: The inner wall of the air intake pipe (3) is fixedly connected with a high temperature resistant layer (18), and the inner wall of the high temperature resistant layer (18) is fixedly connected with a wear resistant layer (19).

6. The explosion-proof pressure relief device of a pyrometallurgical zinc smelting cooler according to claim 2, characterized in that: The number of the conical ash hoppers (13) is two, and the sizes of the two conical ash hoppers (13) are equal.

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