Two-stage spiral-flow type desulfurization and dust removal device

Abstract

The utility model relates to the technical field of gas treatment, in particular to a two-stage spiral-flow type desulfurization and dust removal device which comprises an outer barrel, a sealing cover is arranged at the top of the outer barrel, a base is arranged at the bottom of the outer barrel, a gas inlet is fixed to the surface of the base in an inserted mode, and a gas outlet is fixed to the side wall face of the upper portion of the outer barrel in an inserted mode. Two groups of same spraying adsorption modules are mounted in the outer barrel from top to bottom. The device has the beneficial effects that a plurality of radially arranged spiral nozzles are matched with two-stage spiral-flow type desulfurization, so that the spraying area can be effectively enlarged, the contact time of to-be-treated gas and spraying liquid is prolonged, and the gas desulfurization is more thorough; the rotational flow generated by gas through the rotational flow fan blades not only can prolong the time of the gas to be treated in the desulfurization and dust removal device to cool and reduce energy consumption, but also can throw out particulate matters in the gas through the outward centrifugal effect to further purify the gas, and a plurality of access holes are reserved on the outer barrel to facilitate maintenance, save the maintenance time and meet the market requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of gas processing, in particular to a two-stage cyclone type desulfurization and dust removal device. Background Art

[0002] Desulfurization towers, as key environmental protection equipment, are widely used in various industrial fields, playing an irreplaceable role in treating sulfur-containing waste gas. Their full name is desulfurization dust collector or desulfurization tower. Their primary purpose is to remove sulfur compounds, particularly sulfur dioxide (SO2), from gases through a chemical absorption and reaction process, thereby reducing atmospheric pollution. The operating principle of a desulfurization tower primarily involves two processes: absorption and reaction. During the absorption process, sulfur compounds (such as SO2) in the gas come into contact and mix with a desulfurizer (such as limestone slurry) within the tower. The desulfurizer absorbs the sulfur compounds, transferring them from the gas to the desulfurizer. Subsequently, during the reaction process, the sulfur compounds react with oxygen in the desulfurizer to form compounds such as sulfates or calcium sulfate. These compounds are highly stable and easy to handle and dispose of. Traditional desulfurization towers use a spray desulfurization method, spraying alkaline solution onto the treated gas for contact desulfurization. However, this can lead to problems such as insufficient contact between the spray liquid and the gas, incomplete filtration of particulate matter, and excessively high gas temperatures that increase energy consumption.

[0003] In summary, the purpose of the utility model is to provide a two-stage cyclone desulfurization and dust removal device, which uses spiral nozzles and cyclone blades in two-stage cooling desulfurization, which not only solves the problem of insufficient contact between the sprayed alkali solution and the gas to be treated in traditional spray desulfurization, but also solves the problems of incomplete cleaning of gas particles in the gas to be treated and excessive energy consumption caused by excessive gas temperature. Utility Model Content

[0004] The purpose of the utility model is to provide a two-stage cyclone desulfurization and dust removal device. The use of several spiral nozzles in combination with two-stage cyclone desulfurization can effectively expand the spraying area, increase the contact time between the gas to be treated and the spray liquid, and make the gas desulfurization more thorough. The swirl generated by the gas passing through the swirl fan blades can not only increase the cooling time of the gas to be treated in the desulfurization and dust removal device to reduce energy consumption, but also can further purify the gas by throwing out the particulate matter in the gas through the outward centrifugal effect. An inspection port is left on the outer barrel to facilitate maintenance, save maintenance time, and meet market needs.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A two-stage cyclone desulfurization and dust removal device, comprising an outer barrel, a cover provided on the top of the outer barrel, a base provided on the bottom of the outer barrel, an air inlet fixedly plugged into the surface of the base, an air outlet fixedly plugged into the upper side wall of the outer barrel, and two sets of identical spray adsorption modules installed from top to bottom inside the outer barrel;

[0007] The spray adsorption module is composed of an upper swirl module and a lower dust removal module. The swirl module includes a fixed ring fixed to the inner wall of the outer barrel and a spray box located in the center of the fixed ring. The inner side wall of the fixed ring is fixedly inclined with a plurality of swirl blades. The other end of each swirl blade is fixedly connected to the side wall of the spray box. The horizontal planes where the fixed ring, the plurality of swirl blades and the spray box are located are successively raised. The top of the spray box is connected to an alkali solution inlet pipe. The outer side wall of the spray box is lower than the fixed height of the swirl blades and is placed A plurality of spray pipes are arranged in a radial shape, and a spiral nozzle is provided at the end of each spray pipe. The dust removal module includes a plurality of dust removal pipes arranged vertically and two partitions arranged up and down. Each partition is arranged horizontally on the inner wall of the outer barrel. The two ends of each dust removal pipe pass through the two partitions arranged up and down respectively. The dust removal pipe contacts the side wall of the partition and is sealed with the partition. A coolant inlet pipe and a coolant outlet pipe are provided on the side wall of the outer barrel (1) between the two partitions. The height of the coolant inlet pipe is lower than the height of the coolant outlet pipe.

[0008] The gas to be treated enters the inner cavity of the outer barrel through the air inlet, climbs along the dust removal pipe, passes through two groups of spray adsorption modules and is discharged through the air outlet.

[0009] Preferably, the coolant inlet pipe and the coolant outlet pipe are respectively located on both sides of the outer barrel.

[0010] Preferably, an inspection port B is provided on the side wall of the base, and an inspection port A is provided on the side wall of the outer barrel between the cyclone module and the dust removal module.

[0011] Preferably, the swirl blades are installed on the inner side wall of the fixing ring at an inclination angle of 10-20 degrees.

[0012] Preferably, the side wall of the base is provided with an alkali liquid drainage outlet.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model adopts a plurality of radially arranged spray pipes on the spray box, which can expand the spray range so that the gas to be treated can better contact with the spray liquid for desulfurization treatment, and the two-stage cyclone desulfurization in the outer barrel can further improve the desulfurization effect and better meet the needs of the current market.

[0015] 2. The swirl module of the present invention adopts swirl blades with an angle of 10-20 degrees. When the gas to be treated climbs out of the cavity along the dust removal pipe and is desulfurized by spraying alkali solution, the gas will swirl due to the buoyancy of the gas when it passes through the swirl blades. The outward centrifugal force of the gas will cause the larger particles in the gas to be treated to be thrown out, thereby further purifying the gas to be treated.

[0016] 3. The utility model adopts two-stage cyclone desulfurization and each stage passes through the coolant. The cyclone effect of the cyclone blades on the gas will also increase the time that the gas to be treated stays in the dust removal pipe, thereby increasing the time of electric dust removal and the cooling time, saving energy consumption of the device, and meeting market requirements.

[0017] 4. The utility model also has inspection ports in multiple places, which makes it easy to replace parts damaged by gas corrosion and saves maintenance time.

[0018] In summary, the utility model adopts several spiral nozzles in combination with two-stage swirl desulfurization to effectively expand the spraying area, increase the contact time between the gas to be treated and the spray liquid, and make the gas desulfurization more thorough. The swirl generated by the gas passing through the swirl fan blades can not only increase the cooling time of the gas to be treated in the desulfurization and dust removal device to reduce energy consumption, but also can use the outward centrifugal effect to throw out the particulate matter in the gas and further purify the gas. Multiple inspection ports are left on the outer barrel to facilitate maintenance, save maintenance time, and meet market needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the desulfurization and dust removal device of the utility model;

[0020] Figure 2 This is a schematic diagram of the partial structure inside the outer barrel of the utility model;

[0021] Figure 3 This is a partial structural diagram of the dust removal module of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the swirl module of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure A of the utility model;

[0024] Outer barrel 1; cover 2; base 3; air outlet 4; air inlet 5; inspection port A6; inspection port B601; alkali solution inlet pipe 7; coolant outlet pipe 8; coolant inlet pipe 9; spray adsorption module 10; swirl module 101; fixing ring 1011; swirl fan blade 1012; spray pipe 1013; spray box 1014; spiral nozzle 1015; dust removal module 102; partition 1021; dust removal pipe 1022; alkali solution drain outlet 11. DETAILED DESCRIPTION

[0025] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit 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.

[0026] For the purpose of simplicity and illustration, the principles of the embodiments are described primarily with reference to examples. In the following description, many specific details are provided to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring the understanding of these embodiments. In addition, all embodiments may be used in combination with each other.

[0027] Please refer to the attached drawings, the utility model provides a technical solution:

[0028] A two-stage cyclone desulfurization and dust removal device includes an outer barrel 1, a cover 2 is provided on the top of the outer barrel 1, a base 3 is provided on the bottom of the outer barrel 1, an air inlet 5 is fixedly connected to the surface of the base 3, and an air outlet 4 is fixedly connected to the upper side wall of the outer barrel 1. Two sets of identical spray adsorption modules 10 are installed inside the outer barrel 1 from top to bottom. The use of two-stage cyclone desulfurization can further improve the desulfurization effect and better meet the needs of the current market;

[0029] The spray adsorption module 10 is composed of an upper swirl module 101 and a lower dust removal module 102. The swirl module 101 includes a fixed ring 1011 fixed to the inner wall of the outer barrel 1 and a spray box 1014 located at the center of the fixed ring 1011. The inner wall of the fixed ring 1011 is fixedly inclined with a plurality of swirl blades 1012. The other end of each swirl blade 1012 is fixedly connected to the side wall of the spray box 1014. The horizontal planes of the fixed ring 1011, the plurality of swirl blades 1012 and the spray box 1014 are successively increased. The top of the spray box 1014 is connected to the alkali solution inlet pipe 7. The outer wall of the spray box 1014 is lower than the fixed height of the swirl blades 1012 and is radially provided with a plurality of spray pipes 1013. The end of each spray pipe 1013 is provided with a spiral nozzle 1015. The dust removal module 102 includes a plurality of dust removal pipes 1013 arranged vertically. Tube 1022 and two upper and lower partitions 1021, each of which is horizontally arranged on the inner wall of the outer barrel 1, and the two ends of each dust removal pipe 1022 are respectively passed through the two upper and lower partitions 1021, and the dust removal pipe 1022 contacts the side wall of the partition 1021 and is sealed with the partition 1021. A coolant inlet pipe 9 and a coolant outlet pipe 8 are provided on the side wall of the outer barrel 1 between the two partitions 1021. The height of the coolant inlet pipe 9 is lower than the height of the coolant outlet pipe 8. Two-stage cyclone desulfurization and each stage will pass through the coolant. The cyclone effect of the cyclone blades on the gas will also increase the time that the gas to be treated stays in the dust removal pipe, thereby increasing the time of electric dust removal and the cooling time, saving energy consumption of the device, meeting market requirements, and adopting a plurality of radially arranged spray pipes to expand the spray range so that the gas to be treated can better contact with the spray liquid for desulfurization treatment;

[0030] The gas to be treated enters the inner cavity of the outer barrel 1 through the air inlet 5 , rises along the dust removal pipe 1022 , passes through the two groups of spray adsorption modules 10 , and is discharged through the air outlet 4 .

[0031] Furthermore, the coolant inlet pipe 9 and the coolant outlet pipe 8 are respectively located on both sides of the outer barrel 1 .

[0032] Furthermore, an inspection port B601 is provided on the side wall of the base 3, and an inspection port A6 is provided on the side wall of the outer barrel 1 between the cyclone module 101 and the dust removal module 102. The device has multiple inspection ports to facilitate replacement of parts damaged by gas corrosion and save maintenance time.

[0033] Furthermore, the swirl blades 1012 are installed on the inner wall of the fixed ring 1011 at an inclination angle of 10-20 degrees. The swirl blades with an angle of 10-20 degrees are used in the swirl module. When the gas to be treated climbs out of the cavity along the dust removal pipe and is desulfurized by spraying alkaline solution, due to the buoyancy of the gas, the gas will swirl when passing through the swirl blades. The outward centrifugal force of the gas will cause the larger particles in the gas to be treated to be thrown out, thereby further purifying the gas to be treated.

[0034] Furthermore, an alkali solution drain port 11 is provided on the side wall of the base 3 .

[0035] Working principle: When the gas to be treated enters the outer barrel cavity from the air inlet, the gas to be treated will rise from the dust removal pipe due to buoyancy. At this time, the dust removal pipe will perform electric dust removal, and alkaline solution will flow down the inner wall of the dust removal pipe to contact the gas for desulfurization. After the gas climbs through the dust removal pipe, the alkaline solution sprayed by the spiral nozzle will further contact the gas for desulfurization. When the gas after spraying and desulfurization continues to rise, it will pass through the swirl module. At this time, the gas will become a centrifugal outward swirl after passing through the inclined swirl blades. The larger particles in the gas will be thrown out by centrifugal action, and then dust removal will be carried out. There are two spray adsorption modules in the outer barrel. When the gas passes through in sequence, it will be discharged from the air outlet.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-stage cyclone desulfurization and dust removal device, characterized by: The desulfurization and dust removal device comprises an outer barrel (1), a cover (2) is provided on the top of the outer barrel (1), a base (3) is provided on the bottom of the outer barrel (1), an air inlet (5) is plugged and fixed on the surface of the base (3), an air outlet (4) is plugged and fixed on the upper side wall of the outer barrel (1), and two groups of identical spray adsorption modules (10) are installed inside the outer barrel (1) from top to bottom; The spray adsorption module (10) is composed of an upper swirl module (101) and a lower dust removal module (102). The swirl module (101) includes a fixed ring (1011) fixed to the inner wall of the outer barrel (1) and a spray box (1014) located at the center of the fixed ring (1011). The inner wall of the fixed ring (1011) is fixedly and tiltedly provided with a plurality of swirl blades (1012). The other end of each swirl blade (1012) is fixedly connected to the side wall of the spray box (1014). The horizontal planes where the fixed ring (1011), the plurality of swirl blades (1012) and the spray box (1014) are located are successively raised. The top of the spray box (1014) is connected to an alkali solution water inlet pipe (7). The outer wall of the spray box (1014) is lower than the fixed surface of the swirl blades (1012). A plurality of spray pipes (1013) are radially arranged at positions of a certain height, and a spiral nozzle (1015) is provided at the end of each spray pipe (1013). The dust removal module (102) comprises a plurality of dust removal pipes (1022) arranged vertically and two partitions (1021) arranged vertically. Each partition is horizontally arranged on the inner wall of the outer barrel (1). Both ends of each dust removal pipe (1022) pass through the two partitions (1021) arranged vertically. The side wall of the dust removal pipe (1022) contacts the partition (1021) and is sealed with the partition (1021). A coolant inlet pipe (9) and a coolant outlet pipe (8) are provided on the side wall of the outer barrel (1) between the two partitions (1021). The height of the coolant inlet pipe (9) is lower than the height of the coolant outlet pipe (8). The gas to be treated enters the inner cavity of the outer barrel (1) through the air inlet (5), rises along the dust removal pipe (1022), passes through two groups of spray adsorption modules (10), and is discharged through the air outlet (4).

2. A two-stage cyclone desulfurization and dust removal device according to claim 1, characterized in that: The coolant inlet pipe (9) and the coolant outlet pipe (8) are respectively located on both sides of the outer barrel (1).

3. The two-stage cyclone desulfurization and dust removal device according to claim 1, characterized in that: An inspection port B (601) is provided on the side wall of the base (3), and an inspection port A (6) is provided on the side wall of the outer barrel (1) between the cyclone module (101) and the dust removal module (102).

4. A two-stage cyclone desulfurization and dust removal device according to claim 1, characterized in that: The swirl blades (1012) are installed on the inner side wall of the fixing ring (1011) at an inclination angle of 10-20 degrees.

5. The two-stage cyclone desulfurization and dust removal device according to claim 1, characterized in that: An alkali liquid drainage outlet (11) is provided on the side wall of the base (3).

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