Copper refining flue gas dedusting and pre-spraying device

Abstract

The utility model relates to the technical field of non-ferrous metallurgy, and particularly discloses a copper refining flue gas dust removal pre-spraying device which comprises a bag dust removal device inlet pipeline used for collecting dust, a remote control system used for remote control and an electric hoist used for adding materials. An ash conveying pipeline used for conveying coating is welded to an inlet pipeline of the cloth bag dust removal device, a material sealing pump used for mixing materials is arranged on the ash conveying pipeline, a compressed air pipeline used for air supply is arranged on one side of the material sealing pump, and a rotary valve used for controlling the lime inlet amount, a vibration motor and a buffer pipeline are arranged above the material sealing pump. The bag-type dust collector has the advantages that the bag-type dust collector is high in practicability, energy-saving, environment-friendly and low in project implementation cost, the use cost of the bag-type dust collector is reduced to a great extent, the service life of the bag-type dust collector is prolonged, and the labor intensity of staff is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to non ferrous metallurgy technical field, especially a kind of copper refining flue gas dust removal pre-spraying device. BACKGROUND

[0002] The bag dust removal device has the advantages of high dust removal power, stable dust removal effect, simple dust removal method, easy maintenance, etc., and is widely used in the smelting field, but it needs to be used under certain conditions, such as air inlet temperature, whether it contains water or not, etc.

[0003] In recent years, copper refining process is continuously optimized and improved, especially in fuel, heavy oil which pollutes the environment will be gradually replaced by cleaner natural gas, and water will be generated when natural gas is burned as fuel, which will increase the water content of flue gas, and the water content in flue gas will condense on the filter cloth of the bag dust removal device, causing the filter cloth to be wet and accelerate its damage, thereby increasing the frequency of replacing the filter cloth, not only increasing the use cost, but also deteriorating the labor intensity, not only that, due to the improvement of process, the original process parameters change greatly, such as air supply, flue gas temperature, etc.

[0004] The original bag dust removal device needs to be replaced and modified, which costs a lot, so a copper refining flue gas dust removal pre-spraying device is needed to reduce the water content of flue gas, increase the temperature of flue gas and reduce the acidity of flue gas, so as to increase the use time of filter cloth and prolong the service life of bag dust removal device. UTILITY MODEL CONTENTS

[0005] In view of the shortcomings of the prior art, the utility model provides a copper refining flue gas dust removal pre-spraying device, which solves the problem that water will be generated when natural gas is burned as fuel, which will increase the water content of flue gas, and the water content in flue gas will condense on the filter cloth of the bag dust removal device, causing the filter cloth to be wet and accelerate its damage, thereby increasing the frequency of replacing the filter cloth, not only increasing the use cost, but also deteriorating the labor intensity, not only that, due to the improvement of process, the original process parameters change greatly, such as air supply, flue gas temperature, etc.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme:

[0007] The utility model provides a copper refining flue dust removal pre -spraying device, including the inlet pipeline of cloth bag dust collector for dust collection, remote control system for remote control and electric hoist for adding material, the dust conveying pipeline for conveying coating is welded on the inlet pipeline of cloth bag dust collector, the dust conveying pipeline is provided with the material seal pump for mixing material, one side of the material seal pump is provided with the compressed air pipeline for air supply, the material seal pump top is provided with the rotary valve for controlling the lime entering amount, vibration motor and buffer pipeline, the rotary valve top is provided with the stock bin.

[0008] Preferably, the dust conveying pipeline outlet is inclined downward and opposite to the flue gas direction of the cloth bag dust collector inlet pipeline.

[0009] Preferably, the electric hoist is fixed through a channel steel and can move in single plane and multiple directions in vertical and horizontal directions.

[0010] Preferably, the rotary valve and the material seal pump are connected through the buffer pipeline, the buffer pipeline adopts a square pipeline with a size of 200*200mm and is provided with an observation hole on one side.

[0011] Preferably, the compressed air pipeline is provided with two air sources.

[0012] Preferably, the material seal pump takes compressed air as a power source.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model has the advantages of strong practicability, energy saving and environmental protection, low project implementation cost, greatly reduced cloth bag dust collector use cost, prolonged service life, and reduced labor intensity of workers. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following detailed description of the preferred embodiments of the utility model and the accompanying drawings.

[0016] Figure 1 It is the structure schematic view of a copper refining flue dust removal pre -spraying device of the utility model;

[0017] Figure 2 It is the connecting structure diagram of the dust conveying pipeline and the cloth bag dust collector inlet pipeline of the utility model;

[0018] Figure 3 It is the compressed air supply pipeline schematic view of the utility model.

[0019] Legend: 1, cloth bag dust removal device inlet pipeline; 2, ash conveying pipeline; 3, material sealing pump; 4, compressed air pipeline; 5, stock bin; 6, rotary valve; 7, vibration motor; 8, buffer pipeline; 9, remote control system; 10, electric hoist. DETAILED DESCRIPTION

[0020] The embodiment of the application provides a copper refining flue gas dust removal pre-spraying device, effectively solves that water is generated when natural gas is combusted as fuel, the water content of flue gas is increased, the water content in the flue gas is condensed on filter cloth of a cloth bag dust removal device, the filter cloth is humidified and damaged, the frequency of replacing the filter cloth is increased, the use cost is increased, the labor intensity is deteriorated, in addition, due to process improvement and promotion of part of enterprises, original process parameters are greatly changed, for example, air supply volume, flue gas temperature and the like, small air supply volume and low flue gas temperature also cause the filter cloth to be condensed and damaged, the practicality of the utility model is strong, energy saving and environmental protection are achieved, project implementation cost is low, the use cost of the cloth bag dust removal device is greatly reduced, the service life is prolonged, and the labor intensity of workers is reduced. EMBODIMENT

[0021] For example Figure 1 , Figure 2 and Figure 3As shown, the technical scheme in the embodiment of the application effectively solves the problem that water is generated when natural gas is combusted as fuel, which increases the water content of flue gas, and the water content in the flue gas condenses on the filter cloth of a bag-type dust removal device, causing the filter cloth to be damp and accelerating damage to the filter cloth, thereby increasing the frequency of replacing the filter cloth, increasing the use cost, and deteriorating the labor intensity. Furthermore, due to the improvement of the process, the original process parameters change greatly, such as the air supply amount and the flue gas temperature. A small air supply amount and low flue gas temperature also cause the filter cloth to condense and accelerate damage. The overall idea is as follows: a copper refining flue gas dust removal pre-spraying device, which comprises a bag-type dust removal device inlet pipeline 1 for dust collection, a remote control system 9 for remote control, and an electric hoist 10 for adding materials. A dust conveying pipeline 2 for conveying paint is welded on the bag-type dust removal device inlet pipeline 1. A material seal pump 3 for mixing materials is arranged on the dust conveying pipeline 2. A compressed air pipeline 4 for air supply is arranged on one side of the material seal pump 3. A rotary valve 6 for controlling the amount of lime entering, a vibration motor 7, and a buffer pipeline 8 are arranged above the material seal pump 3. A material bin 5 is arranged above the rotary valve 6. The outlet of the dust conveying pipeline 2 is inclined downward and is in the opposite direction of the flue gas flow direction of the bag-type dust removal device inlet pipeline 1. The two are sealed by welding and are provided with nozzles to make the paint mist enter the flue gas pipeline. The electric hoist 10 is fixed by a channel steel and can move in a single plane in the vertical and horizontal directions. A steel shed is arranged on the top of the material bin to protect the equipment. The rotary valve 6 and the material seal pump 3 are connected by the buffer pipeline 8. The buffer pipeline 8 adopts a 200*200mm square pipeline and has an observation hole on one side. The compressed air pipeline 4 has two air sources, one for use and one for backup, to ensure that the device can be repaired without stopping when a problem occurs, ensuring the continuous operation of the device. The material seal pump 3 uses compressed air as a power source. The device is provided with a remote control system 9 to control the rotary valve 6 and the size of the compressed air, increasing the automation degree of the device and reducing the labor intensity. The device uses low-cost lime and compressed air to mix paint, which is conveyed to the bag-type dust removal device inlet pipeline under the action of the material seal pump 3 using compressed air as a power source. The paint can absorb water in the flue gas, increase the flue gas temperature, and reduce the acidity of the flue gas, and has the advantages of low cost, strong practicality, and simple operation.

[0022] In view of the problems in the prior art, the copper refining flue gas dust removal pre-spraying device has the advantages of strong practicality, energy saving and environmental protection, low project implementation cost, greatly reduced use cost of the bag-type dust removal device, prolonged service life, and reduced labor intensity of workers.

[0023] Working principle:

[0024] Lime is added to the hopper 5 by the electric hoist 10, and then enters the material sealing pump 3 through the buffer pipe 8 under the action of the rotary valve 6. At the same time, compressed air enters the material sealing pump 3 through the compressed air pipe 4 and mixes with the lime to form a spray coating. Then, under the action of the compressed air, it enters the inlet pipe 1 of the bag filter dust collector through the ash conveying pipe 2 and reacts with the flue gas. The reaction mechanism is that calcium oxide reacts with water in the flue gas to generate calcium hydroxide and release heat. At the same time, the alkaline calcium hydroxide will neutralize the sulfuric acid-containing substances in the flue gas, reducing the acidity of the flue gas.

[0025] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A copper refining fume dust removal pre-spraying device, comprising a bag dust removal device inlet pipe (1) for dust collection, a remote control system (9) for remote control, and an electric hoist (10) for adding materials, characterized in that, The inlet pipeline (1) of the cloth bag dust removal device is welded with a dust conveying pipeline (2) for conveying paint, the dust conveying pipeline (2) is provided with a material seal pump (3) for mixing materials, one side of the material seal pump (3) is provided with a compressed air pipeline (4) for air supply; Wherein, the material seal pump (3) is provided above with a rotary valve (6) for controlling the amount of lime entering, a vibration motor (7) and a buffer pipeline (8), the rotary valve (6) is provided above with a material bin (5).

2. A copper refining fume dust precipitation pre-spray device as claimed in claim 1, characterized in that, The outlet of the dust conveying pipeline (2) is inclined downward, and is opposite to the flue gas direction of the inlet pipeline (1) of the cloth bag dust removal device.

3. A pre-spray device for dust removal from copper refining fumes according to claim 1, characterized in that, The electric hoist (10) is fixed by a channel steel and can move in single plane in vertical and horizontal directions.

4. A pre-spray device for dust removal from copper refining fumes according to claim 1, characterized in that, The rotary valve (6) and the material seal pump (3) are connected through the buffer pipeline (8), the buffer pipeline (8) adopts a square pipeline with a size of 200*200mm, and an observation hole is formed on one side.

5. A pre-spray device for dust removal from copper refining fumes according to claim 1, characterized in that, The compressed air pipeline (4) is provided with two air sources.

6. A pre-spray device for dust removal from copper refining fumes according to claim 1, characterized in that, The material seal pump (3) takes compressed air as a power source.

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