Flue gas desulfurization and dust removal equipment

Abstract

The utility model discloses flue gas desulfurization and dust removal equipment, which relates to the field of flue gas dust removal and comprises a dust removal tank, a gas inlet is arranged at the top end of the dust removal tank, a dust removal cavity is arranged in the dust removal tank, a gas collection port is arranged at the bottom end of the dust removal cavity, a communicating pipe is arranged at the bottom end of the gas collection port, and a desulfurization tank is arranged at one end of the communicating pipe far away from the gas collection port. A barrier cover is arranged at the top of the desulfurization tank, and an exhaust duct matched with the desulfurization tank is formed in the outer side of the barrier cover; an exhaust port matched with the desulfurization tank is formed in one side of the bottom end of the exhaust duct; a liquid outlet is formed in one side of the bottom end of the desulfurization tank, a liquid inlet is formed in one side of the side wall of the desulfurization tank, and a dust removal net plate is arranged in the dust removal cavity; a plurality of exhaust branch pipes matched with the blocking cover are evenly arranged at the top of one end of the communicating pipe, and exhaust discs are arranged at the bottom ends of the exhaust branch pipes. According to the utility model, the contact area of the flue gas in the reaction process of the flue gas and the desulfurizing liquid is increased, the sulfur content in the flue gas is reduced, and the pollution to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of flue gas dust removal, in particular to a flue gas desulfurization and dust removal device. Background Art

[0002] Industrial furnaces are heating equipment used in various industrial production processes. They play a key role in many fields such as metal processing, material synthesis, and chemical production. Through combustion, electric heating or other heating methods, they provide the necessary temperature conditions to complete the calcination, melting, heat treatment and other processes of materials.

[0003] With the improvement of environmental protection standards, the environmental impact of industrial emissions has received more and more attention. Sulfur dioxide and particulate matter are the main pollutants in flue gas, which have negative impacts on human health and the environment. Therefore, their emissions need to be effectively controlled.

[0004] In the existing technology, flue gas is usually desulfurized in a desulfurization tank, and the desulfurization tank often uses a spray pipe to spray desulfurization liquid to contact the flue gas and desulfurize the flue gas. However, during the process of spraying the desulfurization liquid through the spray pipe, the desulfurization liquid cannot fully contact with the flue gas, which easily leads to a high sulfur content in the discharged flue gas, causing pollution to the environment. Utility Model Content

[0005] In response to the problems in the related technology, the utility model proposes a flue gas desulfurization and dust removal equipment to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted in this utility model are as follows:

[0007] A flue gas desulfurization and dust removal device comprises a dust removal tank, an air inlet is provided at the top of the dust removal tank, a dust removal chamber is provided inside the dust removal tank, an air collecting port is provided at the bottom of the dust removal chamber, a connecting pipe is provided at the bottom of the air collecting port, a desulfurization tank is provided at the end of the connecting pipe away from the air collecting port, a barrier cover is provided at the top of the desulfurization tank, an exhaust duct that matches the desulfurization tank is provided on the outside of the barrier cover; an exhaust port that matches the desulfurization tank is provided on one side of the bottom end of the exhaust duct; a liquid drain port is provided on one side of the bottom end of the desulfurization tank, a liquid inlet is provided on one side of the side wall of the desulfurization tank, a dust removal mesh plate is provided inside the dust removal chamber; the cross section of the air collecting port is funnel-shaped, a plurality of exhaust branch pipes that match the barrier cover are evenly provided on the top of one end of the connecting pipe, an exhaust disk is provided at the bottom end of the exhaust branch pipe, and a plurality of through holes that match the exhaust branch pipe are evenly provided on the inner bottom end of the barrier cover.

[0008] Furthermore, in order to accelerate the flow of flue gas, the exhaust duct includes a flow chamber opened between the barrier hood and the desulfurization tank, and the top side of the flow chamber is set to an arc structure; an annular partition is provided inside the flow chamber, and the annular partition divides the flow chamber into an air inlet chamber and an air outlet chamber, and the top of the annular partition is provided with an arc-shaped end portion, and the bottom end of the annular partition is fixedly connected to the inner bottom of the air inlet chamber, and the annular partition is tilted from top to bottom from the air outlet chamber toward the air inlet chamber, and the inner diameter of the air inlet chamber gradually decreases from top to bottom, and the inner diameter of the air outlet chamber gradually increases from top to bottom, and an air outlet connected to the air inlet chamber is formed between the top of the air outlet chamber and the annular partition; an air outlet is provided on the side of the arc-shaped end close to the air outlet chamber.

[0009] The beneficial effects of the utility model are:

[0010] 1. Under the action of the dust removal chamber of the dust removal tank, the utility model effectively filters the particulate matter in the flue gas, allowing the flue gas to pass through the dust removal mesh plate and enter the interior of the desulfurization tank, and react evenly with the desulfurization liquid in the desulfurization tank, ensuring that the flue gas is efficiently absorbed and neutralized.

[0011] 2. Under the action of the exhaust duct, the flow of flue gas is accelerated; under the coordinated action of the desulfurization tank, barrier hood, several exhaust pipes and exhaust plate, the contact area of the flue gas during the reaction with the desulfurization liquid is increased, the sulfur content in the flue gas is reduced, and the pollution to the environment is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 paying any creative work.

[0013] Figure 1 This is a schematic structural diagram of a flue gas desulfurization and dust removal device according to an embodiment of the present utility model;

[0014] Figure 2 This is a cross-sectional view of a flue gas desulfurization and dust removal device according to an embodiment of the present utility model;

[0015] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0016] Figure 4 This is a cross-sectional view of a desulfurization tank in a flue gas desulfurization and dust removal device according to an embodiment of the present utility model;

[0017] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0018] Figure 6 This is a partial structural cross-sectional view of a flue gas desulfurization and dust removal device according to an embodiment of the present utility model;

[0019] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle.

[0020] In the picture:

[0021] 1. Dust removal tank; 2. Air inlet; 3. Dust removal chamber; 4. Air collecting port; 5. Connecting pipe; 6. Desulfurization tank; 7. Barrier hood; 8. Exhaust duct; 801. Flow chamber; 802. Annular partition; 803. Air inlet chamber; 804. Air outlet chamber; 805. Arc-shaped end; 806. Air outlet; 807. Air outlet nozzle; 9. Exhaust port; 10. Liquid drain port; 11. Liquid inlet port; 12. Dust removal mesh plate; 13. Exhaust branch pipe; 14. Exhaust plate; 15. Through hole 2. DETAILED DESCRIPTION

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

[0023] According to an embodiment of the present utility model, a flue gas desulfurization and dust removal device is provided.

[0024] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 7 As shown, the flue gas desulfurization and dust removal equipment according to the embodiment of the present invention includes a dust removal tank 1, an air inlet 2 is provided at the top of the dust removal tank 1, a dust removal chamber 3 is provided inside the dust removal tank 1, a gas collecting port 4 is provided at the bottom end of the dust removal chamber 3, a connecting pipe 5 is provided at the bottom end of the gas collecting port 4, a desulfurization tank 6 is provided at one end of the connecting pipe 5 away from the gas collecting port 4, a barrier cover 7 is provided at the top of the desulfurization tank 6, an exhaust duct 8 that matches the desulfurization tank 6 is provided on the outside of the barrier cover 7; an exhaust port 9 that matches the desulfurization tank 6 is provided on one side of the bottom end of the exhaust duct 8; the desulfurization tank 6 has an exhaust port 9 that matches the desulfurization tank 6. A drain port 10 is provided on one side of the bottom end, a liquid inlet 11 is provided on one side of the side wall of the desulfurization tank 6, a dust removal mesh plate 12 is provided inside the dust removal chamber 3, and the opening diameter of the mesh plate in the dust removal mesh plate 12 is smaller than the diameter of the particulate matter in the flue gas, and blocks the particulate matter in the flue gas; the cross-section of the gas collecting port 4 is funnel-shaped, and a plurality of exhaust branch pipes 13 that cooperate with the barrier cover 7 are evenly provided on the top of one end of the connecting pipe 5, and an exhaust disk 14 is provided at the bottom end of the exhaust branch pipe 13, and a plurality of through holes 15 that cooperate with the exhaust branch pipe 13 are evenly provided at the inner bottom end of the barrier cover 7.

[0025] With the help of the above-mentioned technical solution, the utility model uses the dust removal mesh plate 12 to effectively filter the particulate matter in the flue gas under the action of the dust removal chamber 3 of the dust removal tank 1, so that the flue gas passes through the dust removal mesh plate 12 and enters the interior of the desulfurization tank, and reacts evenly with the desulfurization liquid in the desulfurization tank 6, ensuring that the flue gas is efficiently absorbed and neutralized; under the action of the exhaust duct 8, the flow of the flue gas is accelerated; with the cooperation of the desulfurization tank 6, the barrier hood 7, several exhaust branch pipes 13 and the exhaust plate 14, the contact area of the flue gas during the reaction with the desulfurization liquid is increased, the sulfur content in the flue gas is reduced, and the pollution to the environment is reduced.

[0026] In addition, it should be noted that the added desulfurization liquid is composed of water and one or more absorbents, such as lime water (calcium hydroxide solution) or alkaline solution (such as sodium hydroxide solution). The absorbent can effectively remove sulfur-containing gases such as SO2 and SO3 in the flue gas and generate stable salts and water that are not easy to volatilize. Before the desulfurization liquid is added to the desulfurization tank 6, it is precisely adjusted to ensure that its concentration and pH value are suitable for maximum SO2 and SO3 absorption, which not only achieves efficient flue gas purification, but also ensures the stability and reliability of the treatment process.

[0027] At the same time, it should be noted that the liquid level of the desulfurization liquid is located between the barrier cover 7 and the exhaust plate 14, and the exhaust plate 14 is immersed in the desulfurization liquid in the desulfurization tank 6, so that the flue gas can enter the desulfurization liquid evenly and be discharged smoothly through the exhaust duct 8 after the reaction.

[0028] In one embodiment, for the above-mentioned exhaust duct 8, the exhaust duct 8 includes a flow chamber 801 opened between the barrier cover 7 and the desulfurization tank 6, and the top side of the flow chamber 801 is set as an arc structure; an annular partition 802 is set inside the flow chamber 801, and the annular partition 802 divides the flow chamber 801 into an air inlet chamber 803 and an air outlet chamber 804, the top of the annular partition 802 is provided with an arc-shaped end 805, and the bottom end of the annular partition 802 is fixedly connected to the inner bottom of the air inlet chamber 803. The annular partition 802 is tilted from top to bottom from the air outlet chamber 804 toward the air inlet chamber 803, the inner diameter of the air inlet chamber 803 gradually decreases from top to bottom, and the inner diameter of the air outlet chamber 804 gradually increases from top to bottom, and an air outlet 806 connected to the air inlet chamber 803 is formed between the top of the air outlet chamber 804 and the annular partition 802; an air outlet nozzle 807 is provided on the side of the arc-shaped end 805 close to the air outlet chamber 804, thereby accelerating the flow of smoke under the action of the exhaust duct 8.

[0029] The working principle of the exhaust duct 8 is as follows:

[0030] The flue gas generated after the neutralization reaction enters the air inlet chamber 803 until it fills the entire inner cavity of the air inlet chamber 803. When the airflow accumulates to a certain level, it will exceed the normal pressure outside the cavity, thus forming wind. The cavity with a narrow bottom and a wide top will force the internal airflow to move toward the wider cavity at the top. The gas that is constantly "squeezed against each other" will then accelerate through the tiny air outlet nozzle 807 to flow into the air outlet chamber 804, and finally be discharged through the air outlet 806, thereby realizing the accelerated discharge of flue gas.

[0031] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0032] In actual application, desulfurization liquid is added to the desulfurization tank 6 through the liquid inlet 11, and the flue gas generated in the industrial furnace enters the dust removal tank 1 through the air inlet 2, and the particulate matter in the flue gas is blocked on the surface of the dust removal mesh plate 12. The flue gas passes through the dust removal mesh plate 12 and enters the gas collecting port 4, enters the interior of the connecting pipe 5 through the gas collecting port 4, and enters the exhaust disk 14 at the bottom of several exhaust branch pipes 13 through the connecting pipe 5, and the exhaust disk 14 is immersed in the desulfurization liquid in the desulfurization tank 6, so that the flue gas discharged from the exhaust disk 14 can fully react with the desulfurization liquid, absorb and neutralize the flue gas, and the neutralized flue gas is discharged from the top of the desulfurization liquid. Under the blocking effect of the barrier cover 7, the neutralized flue gas will enter the exhaust duct 8 between the desulfurization tank 6 and the barrier cover 7, and the neutralized flue gas will be accelerated to be discharged through the exhaust duct 8, and the outflowing flue gas will eventually be discharged through the exhaust port 9 of the desulfurization tank 6;

[0033] The inner bottom end of the desulfurization tank 6 is inclined, and the drain port 10 is located at the lower end of the inclination. When the desulfurization liquid needs to be replaced, the drain port 10 is opened, and the desulfurization liquid and reaction residue will flow along the higher end of the inclination of the desulfurization tank 6 to the lower end, thereby discharging the desulfurization liquid.

[0034] The working principle of the exhaust duct 8 is as described above.

[0035] To sum up, with the help of the above-mentioned technical scheme of the present invention, the present invention uses the dust removal mesh plate 12 to effectively filter the particulate matter in the flue gas under the action of the dust removal chamber 3 of the dust removal tank 1, so that the flue gas passes through the dust removal mesh plate 12 and enters the interior of the desulfurization tank, and reacts evenly with the desulfurization liquid in the desulfurization tank 6, ensuring that the flue gas is efficiently absorbed and neutralized; under the action of the exhaust duct 8, the flow of the flue gas is accelerated; with the cooperation of the desulfurization tank 6, the barrier hood 7, several exhaust branch pipes 13 and the exhaust disc 14, the contact area of the flue gas during the reaction with the desulfurization liquid is increased, the sulfur content in the flue gas is reduced, and the pollution to the environment is reduced.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flue gas desulfurization and dust removal device, comprising a dust removal tank (1), characterized in that: The top of the dust removal tank (1) is provided with an air inlet (2), the interior of the dust removal tank (1) is provided with a dust removal chamber (3), the bottom of the dust removal chamber (3) is provided with an air collecting port (4), the bottom of the air collecting port (4) is provided with a connecting pipe (5), the end of the connecting pipe (5) away from the air collecting port (4) is provided with a desulfurization tank (6), the top of the desulfurization tank (6) is provided with a barrier cover (7), and the outer side of the barrier cover (7) is provided with an exhaust air duct (8) that matches the desulfurization tank (6); An exhaust port (9) is provided on one side of the bottom end of the exhaust duct (8) and is matched with the desulfurization tank (6); A liquid discharge port (10) is provided on one side of the bottom end of the desulfurization tank (6), and a liquid inlet (11) is provided on one side of the side wall of the desulfurization tank (6).

2. The flue gas desulfurization and dust removal equipment according to claim 1, characterized in that: A dust removal screen plate (12) is provided inside the dust removal chamber (3); The cross section of the gas collecting port (4) is funnel-shaped.

3. The flue gas desulfurization and dust removal equipment according to claim 1, characterized in that: A plurality of exhaust branch pipes (13) matching the barrier cover (7) are evenly arranged on the top of one end of the connecting pipe (5), and an exhaust disk (14) is arranged at the bottom end of the exhaust branch pipe (13).

4. The flue gas desulfurization and dust removal equipment according to claim 3, characterized in that: The inner bottom end of the barrier cover (7) is evenly provided with a plurality of through holes (15) that match the exhaust branch pipe (13).

5. The flue gas desulfurization and dust removal equipment according to claim 4, characterized in that: The exhaust air duct (8) includes a flow cavity (801) opened between the barrier cover (7) and the desulfurization tank (6), and one side of the top end of the flow cavity (801) is configured as an arc structure; An annular partition (802) is provided inside the flow cavity (801), and the annular partition (802) divides the flow cavity (801) into an air inlet cavity (803) and an air outlet cavity (804).

6. The flue gas desulfurization and dust removal equipment according to claim 5, characterized in that: The top end of the annular baffle (802) is provided with an arc-shaped end portion (805), the bottom end of the annular baffle (802) is fixedly connected to the inner bottom of the air inlet cavity (803), and the annular baffle (802) is tilted from top to bottom in the direction from the air outlet cavity (804) toward the air inlet cavity (803).

7. The flue gas desulfurization and dust removal equipment according to claim 6, characterized in that: The inner diameter of the air inlet cavity (803) gradually decreases from top to bottom, and the inner diameter of the air outlet cavity (804) gradually increases from top to bottom, and an air outlet (806) communicating with the air inlet cavity (803) is formed between the top of the air outlet cavity (804) and the annular partition (802); An air outlet nozzle (807) is provided on one side of the arc-shaped end portion (805) close to the air outlet cavity (804).

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