Flue gas purification system
Through the flue gas purification system of multi-stage atomization and spoiler components, the problem of low dust removal efficiency of high concentration and small particle size dust in the prior art is solved, and the efficient flue gas purification effect is achieved, reducing equipment resistance and operating costs.
Patent Information
- Application Number
- CN202422410556.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, the flue gas dust removal equipment has low efficiency and poor effect for flue gas with high concentration and dust particle size less than 10 μm, and is particularly unsatisfactory for dust dust removal with poor hydrophilicity.
The flue gas purification system using a multi-stage atomization device and spoiler assembly, including a cooling zone, a growth zone and a separation zone, is used to spray atomization device with dust and combine it with gravity, centrifugal force and spoiler to achieve multi-stage separation and purification.
It improves the removal efficiency of high-concentration and small-particle-sized dust, enhances the dust removal effect, and reduces equipment resistance and operating costs.
Smart Images
Figure CN223170610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas treatment, and particularly relates to a flue gas purification system. Background Art
[0002] With the continuous development of the industrialization process, many industrial enterprises generate a large amount of high-humidity flue gas dust. These dusts not only seriously affect the environmental quality, but also pose a hazard to people's physical health. Therefore, how to effectively treat high-temperature and high-humidity flue gas dust has become a major challenge in current engineering technology.
[0003] In the related art, the wet process is usually used to remove dust from flue gas, and a spray tower is used in combination with a wet electrostatic precipitator to remove dust from flue gas. Among them, according to its structural characteristics, the spray tower is currently divided into an empty tower and a packed tower. The empty tower has a small resistance, but due to the poor atomization effect of the nozzles, the dust removal effect is not ideal, especially for dust with poor hydrophilicity, and almost no dust removal effect can be achieved. To make up for the atomization effect of the nozzles, the packed tower is provided with multiple trays to increase the residence time of the dust-containing gas in the tower. The dust removal effect is higher than that of the empty tower, but it is easy to cause blockage of the trays, the equipment resistance is large, and the dust removal efficiency for flue gas with high concentration and high humidity is extremely low. Summary of the Utility Model
[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects of low dust removal efficiency and poor effect of the existing flue gas dust removal equipment for flue gas with high concentration and fine dust particle size not greater than 10 μm, so as to provide a flue gas purification system.
[0005] To solve the above technical problem, the utility model provides a flue gas purification system, including:
[0006] A cooling zone, in which a first atomizing device is arranged;
[0007] An increasing zone, arranged downstream of the cooling zone, a turbulence generating component is arranged between the increasing zone and the cooling zone, and a second atomizing device is arranged in the increasing zone;
[0008] A separation zone, arranged downstream of the increasing zone, vortex guiding vanes are fixedly installed in the separation zone, a transmission device is installed in the separation zone, the transmission device drives a driving rotor, and the driving rotor is adapted to drive the flue gas to move upward;
[0009] Both the first atomizing device and the second atomizing device are communicated with a liquid supply device. The first atomizing device is used for atomizing and spraying the liquid supply into the cooling zone, and the second atomizing device is used for atomizing and spraying the liquid supply into the increasing zone.
[0010] Optionally, it further includes a pretreatment zone, which is arranged upstream of the cooling zone. A third atomizing device is arranged in the pretreatment zone. The third atomizing device is communicated with the liquid supply device, and the third atomizing device is used for atomizing and spraying the liquid supply into the pretreatment zone.
[0011] Optionally, a centrifugal device is installed in the pretreatment area, and the centrifugal device is coaxially arranged with the inner cavity of the pretreatment area.
[0012] Optionally, a flue gas inlet pipeline is communicated with the pretreatment area, and the flue gas inlet pipeline is tangent to the inner side wall of the pretreatment area;
[0013] Or, a flue gas inlet pipeline is communicated with the cooling area, and the flue gas inlet pipeline is tangent to the inner side wall of the cooling area.
[0014] Optionally, a cyclone dehydration area is further included, which is arranged downstream of the separation area, and the inlet of the cyclone dehydration area is perpendicular to the separation area.
[0015] Optionally, a fourth atomization device is installed in the cyclone dehydration area, the fourth atomization device is communicated with the liquid supply device, and the fourth atomization device is used for atomizing the liquid supply and spraying it into the cyclone dehydration area.
[0016] Optionally, the cooling area and the growth area are arranged in sequence from bottom to top in the vertical direction, the turbulence component is a baffle tray, and a plurality of baffle plates are arranged on the baffle tray, and the plurality of baffle plates are alternately arranged on the inner side walls of the cooling area and the growth area in the vertical direction in sequence.
[0017] Optionally, the cooling area and the growth area are arranged in sequence horizontally, the turbulence component is a folding plate, a plurality of folding plates are arranged at intervals, and the plurality of folding plates are alternately arranged on the inner side walls of the cooling area and the growth area in the horizontal direction in sequence.
[0018] Optionally, the first atomization device and / or the second atomization device is a two-fluid nozzle.
[0019] Optionally, a fan chimney is communicated downstream of the separation area.
[0020] The technical solution of the present utility model has the following advantages:
[0021] 1. The flue gas purification system provided by the present utility model includes: a cooling area, in which a first atomization device is arranged; a growth area, arranged downstream of the cooling area, a turbulence component is arranged between the growth area and the cooling area, a second atomization device is arranged in the growth area; a separation area, arranged downstream of the growth area, vortex guide vanes are fixedly installed in the separation area, a transmission device is installed in the separation area, the transmission device drives a driving rotor, and the driving rotor is adapted to drive the flue gas to move upward; both the first atomization device and the second atomization device are communicated with the liquid supply device, the first atomization device is used for atomizing the liquid supply and spraying it into the cooling area, and the second atomization device is used for atomizing the liquid supply and spraying it into the growth area.
[0022] The flue gas carrying dust enters the cooling zone. The liquid supply device outputs the liquid to be atomized. Generally, clear water or a solution dissolved with a chemical agent for enhancing the binding ability between water mist and dust is selected as the liquid to be atomized. The liquid output from the liquid supply device is atomized by the first atomizing device and then sprayed into the cooling zone. The flue gas carrying dust cools down while passing through the mist, and at the same time, the mist droplets are pre-combined with the fine dust in the flue gas, so that the particles with larger particle sizes rapidly increase in the cooling zone and are purified under the action of gravity. The flue gas passing through the cooling zone then enters the growth zone. The second atomizing device sprays mist droplets with a particle size not greater than 10 μm. When the flue gas passes through the flow disturbing component, the flow disturbing component forms a flow disturbance to the flue gas, reduces the flow velocity of the gas flow, and under the action of the water mist sprayed by the second atomizing device, the dust with a particle size less than 10 μm in the flue gas is fully combined with the mist droplets and increases in size, and is further purified under the action of gravity. The flue gas after two purifications then enters the separation zone. When the driving device drives the driving rotor to rotate and drives the flue gas to rise, a stable horizontal eddy current is formed when the flue gas passes through the area between the eddy current guiding blades and the driving rotor. According to the characteristics of the dust particle size under the working conditions, by adjusting the rotation speed of the driving rotor, the dust far smaller than the target particle size can pass through, and the dust with the target particle size to be removed naturally falls under the action of the gas force and the centrifugal force, further completing the purification treatment of the flue gas. Through the multiple treatments in the cooling zone, the growth zone and the separation zone, the particle sizes of various sizes are classified and specially treated, improving the dust removal efficiency. By setting the second atomizing device to control the diameter of the atomized mist droplets within the range not greater than 10 μm, the dust particles can be fully contacted with the mist droplets, realizing the effect of dust coalescence and increase and removal, and greatly improving the removal efficiency and effect of dust with high concentration and small particle size.
[0023] 2. The flue gas purification system provided by the present utility model further includes a pretreatment zone, which is arranged upstream of the cooling zone. The pretreatment zone is provided with a third atomizing device, and the third atomizing device is communicated with the liquid supply device. The third atomizing device is used for atomizing the supplied liquid and spraying it into the pretreatment zone. By setting the pretreatment zone, under the atomization of the third atomizing device, the flue gas is cooled down while the dust in the flue gas is rapidly mixed with the mist droplets. Under the impact force of the water mist sprayed by the third atomizing device, the dust directly impacts on the baffle, so that the dust with larger particle sizes in the gas is rapidly separated from the gas, realizing the pretreatment effect and reducing the purification pressure in the subsequent cooling zone and growth zone.
[0024] 3. The flue gas purification system provided by the present utility model is equipped with a centrifugal device in the pretreatment area, and the centrifugal device is coaxially arranged with the inner cavity of the pretreatment area. After high-temperature, high-humidity, and high-dust-concentration flue gas enters the pretreatment area, a large amount of large-particle dust in the flue gas is separated from the flue gas under the action of the centrifugal force of the centrifugal device. At the same time, under the action of the water mist sprayed by the third atomization device, the dust can flow downward along with the inner wall water flow of the pretreatment area, making the fluid drag of the fine powder in the downward water flow less than the centrifugal force, preventing secondary dust generation and improving the dust removal efficiency.
[0025] 4. The flue gas purification system provided by the present utility model further includes a cyclone dehydration area, which is arranged downstream of the separation area, and the inlet of the cyclone dehydration area is perpendicular to the separation area. In the cyclone dehydration area, under the action of gravity and centrifugal force, the clear water carried in the purified flue gas is removed to prevent the clear water from following the gas into the subsequent pipeline and causing corrosion.
[0026] 5. In the flue gas purification system provided by the present utility model, a fan chimney is connected downstream of the separation area, and the purified flue gas is directly discharged to the outside through the fan chimney. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0028] Figure 1 It is a schematic structural diagram of the flue gas purification system provided in the first embodiment of the present utility model.
[0029] Figure 2 It is a schematic structural diagram of the flue gas inlet pipeline provided in the first embodiment of the present utility model.
[0030] Figure 3 It is another schematic structural diagram of the flue gas inlet pipeline provided in the first embodiment of the present utility model.
[0031] Figure 4 It is a schematic structural diagram of the flue gas purification system provided in another embodiment of the present utility model.
[0032] Figure 5 It is a schematic structural diagram of the flue gas purification system provided in another embodiment of the present utility model.
[0033] Description of the reference numerals: 1. Pretreatment area; 2. Cooling area; 3. Growth area; 4. Separation area; 5. Cyclone dehydration area; 6. Fan chimney; 7. First atomization device; 8. Second atomization device; 9. Third atomization device; 10. Flue gas inlet pipeline; 11. Sewage collection tank; 12. Sewage pump; 13. Liquid supply device; 14. Compressed air pipeline; 15. Water supply pipeline; 16. Transmission device. Detailed implementation manners
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0037] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0038] Figures 1 to 3 Shown is a flue gas purification system provided by this embodiment, which is used for the dust removal and purification of high-temperature flue gas and dust discharged from equipment such as boilers, incinerators, and heat treatment furnaces in industrial enterprises. The flue gas purification system includes a pretreatment area 1, a cooling area 2, a growth area 3, and a separation area 4.
[0039] A first atomizing device 7 is arranged in the cooling zone 2. The growth zone 3 is arranged downstream of the cooling zone 2. A flow disturbing component is arranged between the growth zone 3 and the cooling zone 2. A second atomizing device 8 is arranged in the growth zone 3. The pretreatment zone 1 is arranged upstream of the cooling zone 2. A third atomizing device 9 is arranged in the pretreatment zone 1. The separation zone 4 is arranged downstream of the growth zone 3. Eddy current guiding vanes are fixedly installed in the separation zone 4. A transmission device 16 is installed in the separation zone 4. The transmission device 16 drives the installation of a driving rotor, and the driving rotor is adapted to drive the flue gas to move upward. A cyclone dehydration zone 5 is further arranged downstream of the separation zone 4. The inlet of the cyclone dehydration zone 5 is perpendicular to the separation zone 4. The inlet of the cyclone dehydration zone 5 is tangent to the inner side wall of the cyclone dehydration zone 5. A plurality of cyclone dehydrators are arranged in the cyclone dehydration zone 5. The plurality of cyclone dehydrators are arranged around the separation zone 4 at intervals. A fourth atomizing device is installed in the cyclone dehydration zone 5. A blower chimney 6 is communicated with the flue gas outlet of the cyclone dehydration zone 5 downstream of the separation zone 4. The purified flue gas is directly discharged outside through the blower chimney 6.
[0040] The first atomizing device 7, the second atomizing device 8, the third atomizing device 9 and the fourth atomizing device are all communicated with the liquid supply device 13. The first atomizing device 7 is used for atomizing the liquid supply and spraying it into the cooling zone 2. The second atomizing device 8 is used for atomizing the liquid supply and spraying it into the growth zone 3. The third atomizing device 9 is used for atomizing the liquid supply and spraying it into the pretreatment zone 1. The fourth atomizing device is used for atomizing the liquid supply and spraying it into the cyclone dehydration zone 5. The first atomizing device 7, the second atomizing device 8, the third atomizing device 9 and the fourth atomizing device all select two-fluid nozzles. The two-fluid nozzle uses compressed air or compressed nitrogen as the driving source. In this embodiment, the driving source for water vapor atomization selects compressed air. The compressed air atomizes and sprays the water from the water tank serving as the liquid supply device 13 by using the two-fluid nozzle. A compressed air pipeline 14 and a water supply pipeline 15 are arranged in the flue gas purification system. The first atomizing device 7, the second atomizing device 8, the third atomizing device 9 and the fourth atomizing device are arranged in parallel. The two-phase fluid pipelines of the two-fluid nozzles are respectively communicated with the water supply pipeline 15 and the compressed air pipeline 14. The water tank serving as the liquid supply device 13 can directly hold clean water or an aqueous solution added with a chemical agent for enhancing the binding ability of water mist and dust. Or, a solvent for desulfurization and denitrification can also be added to the water tank. The solvent for desulfurization and denitrification is atomized in the pretreatment zone 1, the cooling zone 2, the growth zone 3 and the cyclone dehydration zone 5 by using the atomizing device, and the flue gas is subjected to desulfurization and denitrification treatment. A water pump is installed on the water tank and the water supply pipeline 15 as a driving component to transport the liquid in the water tank from the water supply pipeline 15 to the first atomizing device 7, the second atomizing device 8, the third atomizing device 9 and the fourth atomizing device.
[0041] A centrifugal device is installed in the pretreatment area 1, and the centrifugal device is coaxially arranged with the inner cavity of the pretreatment area 1. After the flue gas with high temperature, high humidity and high dust concentration enters the pretreatment area 1, a large amount of large-particle dust in the flue gas is separated from the flue gas under the action of the centrifugal force of the centrifugal device. At the same time, under the action of the water mist sprayed by the third atomizing device 9, the dust can flow downward along with the water flow on the inner wall of the pretreatment area 1, so that the fluid drag of the fine powder in the downward water flow is less than the centrifugal force, preventing secondary dust emission and improving the dust removal efficiency.
[0042] A flue gas inlet pipeline 10 is connected to the pretreatment area 1, and the flue gas inlet pipeline 10 is tangent to the inner side wall of the pretreatment area 1, as Figure 2 or Figure 3 shown. This enables the flue gas to form a swirling upward movement around the inner side wall of the pretreatment area 1 after entering the pretreatment area 1, enhancing the adsorption probability of the dust in the flue gas to the inner wall of the system and improving the purification effect.
[0043] In this embodiment, the pretreatment area 1, the cooling area 2, the growth area 3 and the separation area 4 are arranged in sequence from bottom to top in the vertical direction. The turbulence component is a baffle tray, and a plurality of baffle plates are arranged on the baffle tray. The plurality of baffle plates are alternately arranged on the inner side walls of the cooling area 2 and the growth area 3 in the vertical direction in sequence. A sewage collection pool 11 is arranged at the bottom of the pretreatment area 1. The sewage flowing down from the pretreatment area 1, the cooling area 2, the growth area 3 and the separation area 4 is stored in the sewage collection pool 11. A sewage pump 12 is connected to the sewage collection pool 11 to discharge the sewage therein.
[0044] By setting up the pretreatment zone 1, under the atomization of the third atomization device 9, the flue gas is cooled while the dust in the flue gas is quickly mixed with the droplets. Under the impact force of the water mist ejected by the third atomization device 9, the dust directly impacts on the baffle, so that the dust with larger particle size in the gas is quickly separated from the gas, achieving the pretreatment effect and reducing the purification pressure of the subsequent cooling zone 2 and growth zone 3. The flue gas carrying dust enters the cooling zone 2. The liquid supply device 13 outputs the liquid to be atomized. The liquid to be atomized is generally selected as clear water or a solution dissolved with a chemical agent for enhancing the binding ability between the water mist and the dust. The liquid output from the liquid supply device 13 is atomized by the first atomization device 7 and then sprayed into the cooling zone 2. The flue gas carrying dust is cooled by the mist while the droplets are pre-bound with the fine dust in the flue gas, so that the particles with larger particle size rapidly increase in the cooling zone 2 and are purified under the action of gravity. The flue gas passing through the cooling zone 2 then enters the growth zone 3. The second atomization device 8 ejects droplets with a particle size not greater than 10 μm. When the flue gas passes through the flow disturbance component, the flow disturbance component forms a flow disturbance on the flue gas, reducing the flow velocity of the gas flow. Under the action of the water mist ejected by the second atomization device 8, the dust with a particle size less than 10 μm in the flue gas is fully combined with the droplets and increases, and is further purified under the action of gravity. The flue gas after two purifications then enters the separation zone 4. When the transmission device 16 drives the driving rotor to rotate and drives the flue gas to rise, a stable horizontal eddy current is formed when the flue gas passes through the area between the eddy current guiding vane and the driving rotor. According to the characteristics of the dust particle size under the working conditions, by adjusting the rotation speed of the driving rotor, the dust far smaller than the target particle size passes through, and the dust with the target particle size to be removed naturally falls under the action of the gas force and the centrifugal force, further completing the purification treatment of the flue gas. Through the multiple treatments of the pretreatment zone 1, cooling zone 2, growth zone 3 and separation zone 4, the particles of various sizes are classified and specially treated, improving the dust removal efficiency. The flue gas purification system provided in this embodiment can design various treatment forms in one equipment body, classify and specially treat particles of each size, and improve the dust removal efficiency. Among them, the dual-fluid nozzle can control the diameter of the atomized droplets within the range not greater than 10 μm, enabling the dust particles to fully contact the droplets and realizing the dust coalescence and growth removal effect. The gas pressure of the dual-fluid nozzle is generally controlled at 0.5 Mpa, and the water pressure is controlled at 0.1 - 0.15 Mpa. Its requirement for water pressure is relatively low, which can reduce the energy consumption of equipment operation. The water consumption of the dual-fluid nozzle is less. The gas consumption of a single nozzle is 0.5 m 3 / h, and the water consumption is 120 mL / min, reducing the operation cost and the power of the water pump. The flue gas purification system provided in this embodiment has a simple structure, is convenient to maintain, has a low equipment investment cost, and only needs to maintain the nozzle regularly. It has a wide range of requirements for the temperature of the dusty steam, and the maximum temperature resistance can reach 200 °C, and it is suitable for the treatment of high-concentration dusty high-temperature gases.
[0045] As an alternative embodiment, the pretreatment zone 1 is not provided in the flue gas purification system. The flue gas inlet pipeline 10 is connected to the cooling zone 2, and the flue gas inlet pipeline 10 is tangent to the inner side wall of the cooling zone 2.
[0046] As an alternative embodiment, the centrifugal device may not be provided in the pretreatment zone 1. After the flue gas with high temperature, high humidity and high dust concentration enters the pretreatment zone 1, under the action of the atomized water vapor ejected by the dual-fluid nozzle serving as the third atomization device 9, while the flue gas is cooled, the dust in the flue gas quickly mixes with the droplets, and under the impact force of the nozzle, the dust directly impacts on the baffle, so that the dust with larger particle size in the gas is quickly separated from the gas, achieving the pretreatment effect.
[0047] As an alternative embodiment, as Figure 4 and Figure 5 shown, the pretreatment zone 1, the cooling zone 2, the growth zone 3 and the separation zone 4 are arranged in sequence along the horizontal direction. The flow disturbance assembly is a folding plate, and a plurality of folding plates are arranged at intervals. The plurality of folding plates are alternately arranged on the inner side walls of the cooling zone 2 and the growth zone 3 in the horizontal direction in sequence. After the folding plates cause flow disturbance to the gas and reduce the wind speed, under the action of the dual-fluid nozzle, the droplets with a particle size less than 10 μm are further fully combined with the dust in the gas and enlarged, and further purification is completed under the action of gravity. Sewage collection pools 11 are installed at the bottoms of the pretreatment zone 1, the cooling zone 2, the growth zone 3 and the separation zone 4. The plurality of sewage collection pools 11 are connected in series through a sewage pipeline, and a sewage pump 12 is installed on the sewage pipeline to discharge the sewage in the sewage collection pools 11. In the separation zone 4, the transmission device 16 is coaxially arranged with the separation zone 4, and the drive motor serving as the transmission device 16 is coaxially installed at the top of the separation zone 4. Alternatively, in the separation zone 4, the transmission device 16 can also be arranged on one side of the separation zone 4, and the transmission device 16 drives the drive rotor in the separation zone 4 to rotate through a transmission member.
[0048] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.
Claims
1. A flue gas purification system, characterized in that, Comprising: A cooling zone (2), in which a first atomizing device (7) is provided; A growth zone (3), provided downstream of the cooling zone (2), a flow disturbing component is provided between the growth zone (3) and the cooling zone (2), and a second atomizing device (8) is provided in the growth zone (3); A separation zone (4), provided downstream of the growth zone (3), vortex guiding vanes are fixedly installed in the separation zone (4), a transmission device (16) is installed in the separation zone (4), the transmission device (16) drives and installs a driving rotor, and the driving rotor is adapted to drive the flue gas to move upward; Both the first atomizing device (7) and the second atomizing device (8) are communicated with a liquid supply device (13), the first atomizing device (7) is used for atomizing the liquid supply and spraying it into the cooling zone (2), and the second atomizing device (8) is used for atomizing the liquid supply and spraying it into the growth zone (3).
2. The flue gas purification system according to claim 1, wherein It further includes a pretreatment zone (1), the pretreatment zone (1) is provided upstream of the cooling zone (2), a third atomizing device (9) is provided in the pretreatment zone (1), the third atomizing device (9) is communicated with the liquid supply device (13), and the third atomizing device (9) is used for atomizing the liquid supply and spraying it into the pretreatment zone (1).
3. The flue gas purification system according to claim 2, characterized in that, A centrifugal device is installed in the pretreatment zone (1), and the centrifugal device is coaxially arranged with the inner cavity of the pretreatment zone (1).
4. The flue gas purification system according to claim 2 or 3, characterized in that, A flue gas inlet pipeline (10) is communicated with the pretreatment zone (1), and the flue gas inlet pipeline (10) is tangent to the inner side wall of the pretreatment zone (1); Or, a flue gas inlet pipeline (10) is communicated with the cooling zone (2), and the flue gas inlet pipeline (10) is tangent to the inner side wall of the cooling zone (2).
5. The flue gas purification system according to any one of claims 1 to 3, characterized in that, It further includes a cyclone dehydration zone (5), provided downstream of the separation zone (4), and the inlet of the cyclone dehydration zone (5) is perpendicular to the separation zone (4).
6. The flue gas purification system according to claim 5, characterized in that A fourth atomizing device is installed in the cyclone dehydration zone (5), the fourth atomizing device is communicated with the liquid supply device (13), and the fourth atomizing device is used for atomizing the liquid supply and spraying it into the cyclone dehydration zone (5).
7. The flue gas purification system according to any one of claims 1 to 3, characterized in that, The cooling zone (2) and the growth zone (3) are arranged in sequence from bottom to top in the vertical direction, the flow disturbing component is a baffle tray, and a plurality of baffle plates are provided on the baffle tray, and the plurality of baffle plates are alternately arranged on the inner side walls of the cooling zone (2) and the growth zone (3) in the vertical direction in sequence.
8. The flue gas purification system according to any one of claims 1 to 3, characterized in that The cooling zone (2) and the growth zone (3) are arranged in sequence horizontally, the flow disturbing component is a baffle plate, a plurality of baffle plates are arranged at intervals, and the plurality of baffle plates are alternately arranged on the inner side walls of the cooling zone (2) and the growth zone (3) in the horizontal direction in sequence.
9. The flue gas purification system according to any one of claims 1 to 3, characterized in that, The first atomizing device (7) and / or the second atomizing device (8) is a two-fluid nozzle.
10. The flue gas purification system according to any one of claims 1 to 3, characterized in that, A fan chimney (6) is communicated downstream of the separation zone (4).