Efficient desulfurization and dust removal device

Abstract

The utility model discloses an efficient desulfurization and dust removal device which comprises a desulfurization tower main body, the cyclone dust collector is mounted in the desulfurization tower main body; the rotational flow plate is mounted in the desulfurization tower main body and is positioned at the top of the cyclone dust collector; the spraying assembly is fixedly connected to the interior of the desulfurization tower main body; the auxiliary mechanism is arranged at the side part of the desulfurizing tower main body and is used for forming an overhaul window so as to overhaul the spraying assembly. The cyclone dust collector, the rotational flow plates, the spraying assembly, the demister and the auxiliary mechanism are matched with one another, large dust particles are removed through centrifugal force, then alkali liquor is violently stirred by high-speed airflow through the three layers of vortex rotational flow plates, so that water reaches the optimal atomization quality, and the atomization effect is good. According to the diesel exhaust gas desulfurization and dust removal device, dust in flue gas and alkali liquor reach the maximum contact area, mist is removed through the demister, the auxiliary mechanism provides a maintenance window for the spraying assembly, and then the diesel exhaust gas desulfurization and dust removal effects are improved.

Description

Technical Field

[0001] This utility model relates to the field of high-efficiency desulfurization and dust removal, and in particular to a high-efficiency desulfurization and dust removal device. Background Technology

[0002] Diesel fuel is typically a light petroleum product, mainly composed of a complex mixture of hydrocarbons. During the incomplete combustion of diesel fuel, exhaust gases containing nitrogen oxides, carbon monoxide, particulate matter, sulfides, and blackness are produced, along with soot. These exhaust gases not only cause serious environmental pollution but also pose a threat to human health, thus necessitating the treatment of diesel exhaust gases.

[0003] Existing technologies typically employ desulfurization towers to treat diesel exhaust gas. While this method can remove some sulfides and particulate matter, the limited contact area between the flue gas and the spray liquid results in poor treatment performance. Therefore, efficient desulfurization and dust removal of diesel exhaust gas is necessary. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency desulfurization and dust removal device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency desulfurization and dust removal device, comprising:

[0006] Desulfurization tower main body;

[0007] Cyclone dust collector, installed inside the main body of the desulfurization tower;

[0008] A swirl plate is installed inside the main body of the desulfurization tower and is located at the top of the cyclone dust collector. The swirl plate is used to make the flue gas form a vortex for internal circulation.

[0009] A spray assembly is fixedly connected inside the main body of the desulfurization tower, and the spray assembly is used to spray and desulfurize the flue gas;

[0010] An auxiliary mechanism is located on the side of the main body of the desulfurization tower. The auxiliary mechanism is used to form an inspection window for the maintenance of the spray assembly.

[0011] A demister is fixed inside the main body of the desulfurization tower and is located at the top of the spray assembly.

[0012] Preferred options also include:

[0013] Flue gas inlet, which is located outside the main body of the desulfurization tower;

[0014] Flue gas outlet, which is located at the top of the desulfurization tower body;

[0015] A connecting pipe is fixedly sleeved on the outside of the desulfurization tower body, and a circulating water tank is fixedly sleeved at one end of the connecting pipe.

[0016] Preferably, the swirl plate is arranged in three layers, and a control valve is installed on the connecting pipe.

[0017] Preferably, the spray assembly includes:

[0018] Spray pipes are installed on the outside of the desulfurization tower body;

[0019] A spray head, which is fixedly sleeved onto the bottom of the spray pipe.

[0020] Preferably, the auxiliary mechanism includes:

[0021] A support frame, which is fixedly connected to the outside of the desulfurization tower body;

[0022] A through channel is provided on the outside of the desulfurization tower body, and the inner cavity of the through channel is connected to the inner cavity of the support frame.

[0023] A sealing column, which slides through the through groove and the support frame, and a connecting plate is fixedly connected to the side of the sealing column;

[0024] A fastener is provided on the support frame.

[0025] Preferably, the fastener includes:

[0026] A square plate is fixedly connected to the side of the support frame. A mounting column is fixedly connected to the side of the square plate, and a fixing ring is fixedly inserted and connected to the outer wall of the mounting column.

[0027] A fixing frame is fixedly connected to the side of the connecting plate, and the outer wall of the mounting column is slidably inserted into the fixing frame;

[0028] A locking cap, which is threadedly inserted into the end of the mounting post.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] This invention utilizes the coordinated operation of a cyclone dust collector, swirl plates, spray assembly, demister, and auxiliary mechanisms. Flue gas enters from the bottom of the cyclone dust collector, where centrifugal force removes larger dust particles. Then, passing through three layers of vortex swirl plates, the high-speed airflow intensely agitates the alkaline solution, achieving optimal atomization quality. This maximizes the contact area between the dust particles in the flue gas and the alkaline solution. The demister removes the mist, and the auxiliary mechanisms provide maintenance windows for the spray assembly. This process effectively improves the desulfurization and dust removal efficiency of diesel exhaust gas. Employing a successful alkaline absorption method, the process involves physical and chemical processes such as swirl, spraying, absorption, adsorption, oxidation, neutralization, and reduction, as well as dehydration and demisting, to achieve desulfurization, dehumidification, and flue gas purification. Attached Figure Description

[0031] Figure 1 This is a front cross-sectional view of the present invention.

[0032] Figure 2 This is a front cross-sectional view of the support frame of this utility model.

[0033] Figure 3 This is a schematic diagram of the support frame structure of this utility model.

[0034] In the diagram: 1. Desulfurization tower body; 2. Cyclone dust collector; 3. Swirl plate; 4. Spray assembly; 41. Spray pipe; 42. Spray head; 5. Auxiliary mechanism; 51. Support frame; 52. Sealing column; 53. Connecting plate; 54. Square plate; 55. Mounting column; 56. Fixing frame; 57. Locking cap; 58. Fixing ring; 6. Demister; 7. Flue gas inlet; 8. Flue gas outlet; 9. Connecting pipe; 10. Circulating water pool. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] This utility model provides, for example Figure 1-3The high-efficiency desulfurization and dust removal device shown includes a desulfurization tower body 1; a cyclone dust collector 2 installed inside the desulfurization tower body 1, which facilitates the entry of flue gas from its bottom and uses centrifugal force to remove larger dust particles; a cyclone plate 3 installed inside the desulfurization tower body 1, and the cyclone plate 3 is located at the top of the cyclone dust collector 2. The cyclone plate 3 is used to create an internal vortex circulation of flue gas, and the high-speed airflow vigorously stirs the alkaline solution to achieve the best atomization quality of the water, thereby maximizing the contact area between the dust in the flue gas and the alkaline solution. The cyclone plate 3 is arranged in three layers and is vortex-type; a spray assembly 4 is fixedly connected inside the desulfurization tower body 1. The spray assembly 4 is used to spray the flue gas for desulfurization and spray the alkaline solution; an auxiliary mechanism 5 is set on the side of the desulfurization tower body 1, and the auxiliary mechanism 5 is used to form an inspection window for maintenance of the spray assembly 4; a demister 6 is fixed to the desulfurization tower body 1. Inside the main body 1, the demister 6 is located at the top of the spray assembly 4, which is beneficial for removing mist inside the main body 1 of the desulfurization tower. The main body 1 of the desulfurization tower is an integrated desulfurization and denitrification unit. Wastewater is recycled and not discharged externally. The working mechanism inside the tower is based on the characteristics of the flue gas composition. It adopts a successful alkaline absorption method. Through physical and chemical processes such as swirling, spraying, absorption, adsorption, oxidation, neutralization and reduction, as well as dehydration and demisting, it achieves the purpose of desulfurization, dehumidification and purification of flue gas. In terms of water recycling, the desulfurized water can be recycled. Waste alkali is added to the circulating water to adjust and maintain a certain pH value. Effective anti-scaling, dehydration and dehumidification measures are adopted in the process structure and process flow, which effectively controls problems such as scaling and moisture corrosion. It is simple to use, occupies a small area, has low operating costs, long service life and low failure rate. There is no overflow tank on the outside and the overall resistance is low.

[0037] Furthermore, it also includes a flue gas inlet 7, a flue gas outlet 8, and a connecting pipe 9. The flue gas inlet 7 facilitates the entry of diesel exhaust gas into the interior of the desulfurization tower body 1. The flue gas outlet 8 facilitates the discharge of diesel exhaust gas from the interior of the desulfurization tower body 1 after treatment. The connecting pipe 9 facilitates the delivery of spray liquid so that the desulfurized water can be recycled. Waste alkali is added to the recycled water for adjustment. The flue gas inlet 7 is located outside the desulfurization tower body 1, the flue gas outlet 8 is located at the top of the desulfurization tower body 1, and the connecting pipe 9 is fixedly sleeved on the outside of the desulfurization tower body 1. One end of the connecting pipe 9 is fixedly sleeved with a circulating water tank 10 to facilitate the formation of circulating water for use. A control valve is installed on the connecting pipe 9.

[0038] Specifically, the spray assembly 4 includes a spray pipe 41 and a spray head 42. The spray pipe 41 facilitates the transport of the spray alkali solution, and the spray head 42 is an atomizing type, which facilitates the atomization and spraying of the alkali solution for desulfurization and dust removal. The spray pipe 41 is installed on the outside of the desulfurization tower body 1, and the spray head 42 is fixedly sleeved on the bottom of the spray pipe 41.

[0039] Specifically, the auxiliary mechanism 5 includes a support frame 51, a through groove, a sealing column 52, and a fixing component. The support frame 51 is used to cover the inside of the through groove, which facilitates operation inside the desulfurization tower body 1 for maintenance of the spray assembly 4. The sealing column 52 is used to seal the inside of the through groove and the support frame 51 for normal use of the desulfurization tower body 1. The support frame 51 is fixedly connected to the outside of the desulfurization tower body 1. The through groove is opened on the outside of the desulfurization tower body 1, and the inner cavity of the through groove is connected to the inner cavity of the support frame 51. The sealing column 52 slides through the inside of the through groove and the support frame 51. A connecting plate 53 is fixedly connected to the side of the sealing column 52, which facilitates pulling the sealing column 52 and allows for traction operation of the sealing column 52. The fixing component is set on the support frame 51.

[0040] More specifically, the fasteners include a square plate 54, a fixing bracket 56, and a locking cap 57. The square plate 54 is used to support the mounting column 55. The fixing bracket 56 is L-shaped, which is convenient for interlocking with the mounting column 55 to position and install the connecting plate 53. The locking cap 57 is used to limit the relative position of the mounting column 55 and the fixing bracket 56, which in turn facilitates the installation and disassembly of the sealing column 52 for internal maintenance of the desulfurization tower body 1. The square plate 54 is fixedly connected to the side of the support frame 51. The side of the square plate 54 is fixedly connected to the mounting column 55, which is convenient for connecting with the fixing bracket 56. The outer wall of the mounting column 55 is fixedly interlocked with a fixing ring 58, which is convenient for supporting and limiting the installation position of the connecting plate 53. The fixing bracket 56 is fixedly connected to the side of the connecting plate 53. The outer wall of the mounting column 55 is slidably interlocked with the fixing bracket 56. The locking cap 57 is threadedly interlocked with the end of the mounting column 55.

[0041] The dust removal principle of the desulfurization tower body 1 is that after the flue gas enters tangentially from the bottom of the desulfurization tower body, it rotates and rises around the cyclone dust collector 2 at the bottom. The centrifugal force is used to remove larger dust particles. Then, through the three-layer cyclone plate 3, the high-speed airflow vigorously stirs the alkaline solution to make the water achieve the best atomization quality, so that the dust in the flue gas and the alkaline solution reach the maximum contact area. The smaller dust particles are condensed into larger dust particles by the collision and interception of the droplets, the condensation on the particles, and the Brownian diffusion, etc., and are removed.

[0042] The desulfurization principle of the main body 1 of the desulfurization tower is based on the characteristics of sulfur dioxide, namely acidity, solubility, oxidizing and reducing properties. Sulfur dioxide is highly acidic after dissolving in water and reacts quickly with alkali. Under normal circumstances, flue gas is discharged from the boiler. When a certain amount of alkali solution is injected, the better the atomization quality of the alkali solution, the higher the desulfurization efficiency. The three-layer vortex swirl plate 3 can make the high-speed airflow vigorously stir the alkali solution, generate vortex internal circulation, and repeat atomization, so that the alkali solution is completely atomized, achieving the best contact method and contact area, thereby achieving the ideal desulfurization effect.

[0043] The following factors contribute to high efficiency in the desulfurization process:

[0044] (1) High degree of liquid atomization: Whether the acid-base neutralization is sufficient depends on the atomization quality of the liquid. The finer the atomization, the more sufficient the neutralization of acid and base, the larger the contact area between the liquid mist and the flue gas, and the higher the desulfurization effect.

[0045] (2) Higher cylinder: For liquids, relative motion within a higher cylinder can increase the number of rotations, allowing acidic gases and alkaline liquids sufficient time and space to undergo purification processes such as contact, absorption, dissolution, and neutralization.

[0046] (3) Rotation technology: Under large-area rotation spraying, this technology can maximize the gas-liquid contact area and make the gas phase turbulence intense, which enhances the absorption of acidic gas by alkaline liquid.

[0047] The reaction process is as follows:

[0048] 2NaOH + SO2 → Na2SO3 + H2O

[0049] Na₂SO₂ + SO₂ + H₂O → 2NaHSO₃

[0050] Side reaction 2Na₂SO₃ + O₂ → 2Na₂SO₄

[0051] The airflow is tangentially introduced into the high-efficiency desulfurization and dust removal device and spirals upward through the plate tower. The liquid flow is distributed from the blind plate to each blade, forming a liquid curtain. The airflow contacts the liquid curtain on one hand and impacts the liquid flow on the other hand, forming droplets, increasing the gas-liquid contact area. The liquid curtain and droplets are thrown to the liquid ring groove on the tower wall by the centrifugal force of the airflow. The bottom of the ring groove is equipped with a guide pipe to discharge the liquid into the next layer of swirl plate 3. In the process of full contact between the airflow and liquid flow, a large interphase interface is formed and a series of physicochemical reaction processes are completed.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency desulfurization and dust removal device, characterized in that, Include: Desulfurization tower body (1); Cyclone dust collector (2) is installed in the inside of desulfurization tower body (1); The cyclone plate (3) is installed in the inside of desulfurization tower body (1), and the cyclone plate (3) is located at the top of cyclone dust collector (2), and the cyclone plate (3) is used to make the flue gas form vortex internal circulation; Spray assembly (4) is fixedly connected to the inside of desulfurization tower body (1), and the spray assembly (4) is used for spraying desulfurization to flue gas; Auxiliary mechanism (5) is arranged on the side of desulfurization tower body (1), and the auxiliary mechanism (5) is used to form a maintenance window to maintain the spray assembly (4); Demister (6) is fixed in the inside of desulfurization tower body (1), and the demister (6) is located at the top of spray assembly (4).

2. The high-efficiency desulfurization and dust removal device according to claim 1, characterized in that, Also include: Flue gas inlet (7) is opened on the outside of desulfurization tower body (1); Flue gas outlet (8) is arranged at the top of desulfurization tower body (1); The connecting pipe (9) is fixedly sleeved on the outside of desulfurization tower body (1), and one end of the connecting pipe (9) is fixedly sleeved with circulating water pool (10).

3. The high-efficiency desulfurization and dust removal device according to claim 2, characterized in that, The cyclone plate (3) is arranged in three layers, and the connecting pipe (9) is provided with a control valve.

4. The high-efficiency desulfurization and dust removal device according to claim 1, characterized in that, The spray assembly (4) comprises: Spray pipe (41) is installed on the outside of desulfurization tower body (1); Spray head (42) is fixedly sleeved at the bottom of spray pipe (41).

5. The high-efficiency desulfurization and dust removal device according to claim 1, characterized in that, The auxiliary mechanism (5) comprises: Support frame (51) is fixedly connected to the outside of desulfurization tower body (1); The through slot is opened on the outside of desulfurization tower body (1), and the inner cavity of the through slot is communicated with the inner cavity of the support frame (51); Sealing column (52) is slidably inserted into the inside of the through slot and the support frame (51), and the side of the sealing column (52) is fixedly connected with the connecting plate (53); The fixing part is arranged on the support frame (51).

6. The high-efficiency desulfurization and dust removal device according to claim 5, characterized in that, The fixing part comprises: Square plate (54) is fixedly connected to the side of support frame (51), the side of square plate (54) is fixedly connected with mounting column (55), and the outer wall of mounting column (55) is fixedly connected with fixing ring (58); Fixed frame (56) is fixedly connected to the side of connecting plate (53), the outer wall of mounting column (55) is slidably connected with fixed frame (56); Locking cap (57) is threadedly connected to the end of mounting column (55).

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