Flue gas cleaning reaction apparatus

Abstract

The embodiment of the present application provides a flue gas purification reaction device. The flue gas purification reaction device comprises a plurality of reaction chambers; a powder bin in the plurality of reaction chambers is communicated with a feeding end of an intermediate bin through a conveying pipe, a discharging end of the intermediate bin is communicated with a first end of an ion waterfall generating pipe, a second end of the ion waterfall generating pipe is connected with a feeding port of a powder circulating hopper, and a discharging port of the powder circulating hopper is connected with a first scraper. In the case that the reaction chamber is a first target chamber, the powder bin is used for storing limestone powder; in the case that the reaction chamber is a second target chamber, the powder bin is used for storing denitration catalyst powder; and the first scraper and the second scraper are connected through an elevator. In this way, the flue gas purification reaction device can be used for dry limestone powder to absorb sulfur dioxide in flue gas, and the catalyst powder can fully react with nitrogen oxides in the flue gas, so that the flue gas purification efficiency is improved, and the cost of flue gas purification is reduced.

Description

Technical Field

[0001] This application relates to the field of industrial dust removal technology, specifically to a flue gas purification reaction device. Background Technology

[0002] In the non-ferrous metallurgy and power industries, in order to meet the environmental protection requirements for flue gas emissions, it is usually necessary to remove particulate matter, nitrogen oxides and sulfur dioxide from the flue gas.

[0003] For particulate matter in flue gas, electrostatic precipitators, bag filters, and combined electrostatic and bag filters are commonly used to remove particulate matter. For nitrogen oxides in flue gas, denitrification is typically performed using methods such as SCR or SNCR. For sulfur dioxide in flue gas, limestone-gypsum wet desulfurization is usually required. In the denitrification process, to ensure sufficient intensity, a honeycomb-shaped denitrification catalyst is layered within the SCR reactor, and large-particle catalysts are necessary.

[0004] However, on the one hand, the relatively small surface area of ​​large catalyst particles reduces the contact area between flue gas and catalyst, thus reducing the denitrification efficiency and consequently affecting the flue gas purification efficiency; on the other hand, a large amount of wastewater is generated when using limestone-gypsum wet desulfurization, which requires wastewater treatment, thereby increasing the cost of flue gas purification.

[0005] Application content

[0006] This application provides a flue gas purification reaction device that can solve the problems of low efficiency and high cost of flue gas purification in related technologies.

[0007] To solve the above-mentioned technical problems, this application is implemented as follows:

[0008] This application provides a flue gas purification reaction device, which includes multiple reaction chambers.

[0009] The first target chamber or the second target chamber among the plurality of reaction chambers is equipped with a powder silo, a conveying pipe, an intermediate silo, an ion cascade generating pipe, a powder circulating hopper, a first scraper conveyor, an elevator, and a second scraper conveyor;

[0010] The powder hopper is connected to the feed end of the intermediate hopper through the conveying pipe. The discharge end of the intermediate hopper is connected to the first end of the ion cascade generating pipe. The second end of the ion cascade generating pipe is connected to the feed inlet of the powder circulation hopper. The discharge outlet of the powder circulation hopper is connected to the first scraper conveyor.

[0011] When the reaction chamber is the first target chamber, the powder silo is used to store limestone powder; when the reaction chamber is the second target chamber, the powder silo is used to store denitrification catalyst powder. The first target chamber is the chamber used for desulfurization reaction among the plurality of reaction chambers, and the second target chamber is the chamber used for denitrification reaction among the plurality of reaction chambers.

[0012] The first scraper conveyor and the second scraper conveyor are connected by an elevator, and the second scraper conveyor is located between the intermediate chamber and the first end of the ion waterfall generating tube.

[0013] Optionally, each of the reaction chambers is provided with multiple ion cascade generating tubes, and the first end of each ion cascade generating tube is connected to a powder circulation hopper.

[0014] Optionally, a flue gas baffle is provided between each two adjacent ion cascade generating tubes.

[0015] Optionally, a first impeller feeder and a feeding pipe are also provided between the discharge end of the intermediate chamber and the first end of the ion waterfall generating tube;

[0016] The input end of the first impeller feeder is connected to the discharge end of the intermediate chamber, the output end of the first impeller feeder is connected to the inlet of the feeding tube, and the outlet of the feeding tube is connected to the first end of the ion waterfall generating tube.

[0017] Optionally, the flow area of ​​the feed inlet of the feed tube is smaller than the flow area of ​​the discharge outlet of the feed tube.

[0018] Optionally, the flow area of ​​the feeding tube decreases along a first direction, wherein the first direction is the extension direction from the feed inlet to the discharge outlet of the feeding tube.

[0019] Optionally, a single-compartment pump is also provided in the reaction chamber;

[0020] The single-compartment pump is connected to the discharge port of the powder silo, and the single-compartment pump is used to transport the limestone powder to the intermediate silo through the conveying pipe.

[0021] Optionally, a second impeller feeder is provided between the discharge port of the powder circulation hopper and the first scraper conveyor.

[0022] Optionally, a third impeller feeder is provided between the conveying pipe and the feed end of the intermediate bin.

[0023] Optionally, an ion waterfall generating tube may also have an ion waterfall corona electrode suspended at its first end.

[0024] As can be seen from the above embodiments, when flue gas is purified using the flue gas purification reaction device provided in this embodiment of the invention, when the reaction chamber is the first target chamber, since the powder silo is used to store limestone powder, the powder silo is connected to the feed end of the intermediate silo through the conveying pipe, the discharge end of the intermediate silo is connected to the first end of the ion cascade generating pipe, and the second end of the ion cascade generating pipe is connected to the feed inlet of the powder circulation hopper, when the limestone powder reaches the ion cascade generating pipe through the intermediate silo, the powdered limestone powder can react with sulfur dioxide in the flue gas. Since the discharge outlet of the powder circulation hopper is connected to the first scraper conveyor, and the first scraper conveyor and the second scraper conveyor are connected through the elevator, and the second scraper conveyor is located between the intermediate silo and the first end of the ion cascade generating pipe, the sulfur dioxide in the flue gas can be absorbed by the dry limestone powder circulation. In this way, while improving the desulfurization efficiency, a large amount of wastewater will not be generated, so there is no need to treat the wastewater, thereby saving the cost of flue gas purification. When the reaction chamber is the second target chamber, since the powder silo is used to store nitrate catalyst powder, when the catalyst powder reaches the ion cascade generator tube, the powdered catalyst has a relatively large surface area, which can fully react with nitrogen oxides in the flue gas, thereby accelerating the desulfurization reaction rate and improving the flue gas purification efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a flue gas purification reaction device provided in an embodiment of this application.

[0026] Figure label:

[0027] 1: Reaction chamber; 11: Powder silo; 12: Conveying pipe; 13: Intermediate silo; 14: Ion waterfall generator pipe; 15: Powder circulating hopper; 16: First scraper conveyor; 17: Elevator; 18: Second scraper conveyor; 19: Flue gas baffle; 20: First impeller feeder; 21: Feeding pipe; 22: Single silo pump; 23: Second impeller feeder; 24: Third impeller feeder; 25: Ion waterfall corona electrode. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0030] Before introducing the flue gas purification reaction device of this utility model embodiment, the problems existing in the prior art and the inventive objectives to be achieved by the embodiments of this invention are described in detail below:

[0031] The industrial and power sectors typically employ electrostatic precipitators, bag filters, and hybrid electrostatic and bag filters to meet environmental protection requirements for flue gas emissions. These methods are highly efficient at removing larger particles (PM10 and above). However, the non-ferrous metallurgy and power industries require high-temperature dust collectors. Because their operating temperatures range from 300°C to 500°C, this creates favorable conditions for the SCR (Selective Catalytic Reduction) method to remove nitrogen oxides. However, if sulfur trioxide is present in the flue gas, ammonia will react with it to form ammonium sulfate, which can clog the honeycomb SCR catalyst. Therefore, if SCR is used for dust removal, flue gas dust removal and desulfurization must be completed upstream of the process.

[0032] To remove nitrogen oxides from flue gas, the SNRB (SOX-NOX-ROXBOX) process can be used for dust removal. This process concentrates the treatment of SO2, NOx, and particulate matter in a high-temperature dust collection chamber. The device may include an economizer, a bag filter, and a heat exchanger. The bag filter is positioned between the economizer and the heat exchanger. A calcium-based absorbent is injected after the economizer to remove sulfur dioxide. An SCR catalyst is suspended in the filter bags of the bag filter, and ammonia is injected before the gas enters the bag filter to remove nitrogen oxides.

[0033] However, when purifying flue gas using the above methods, the honeycomb-shaped denitrification catalyst is layered within the SCR reactor to ensure sufficient strength during the denitrification process, requiring the use of large-particle catalysts. This results in a relatively small catalyst surface area and a small contact area between the flue gas and the catalyst, thus affecting the denitrification efficiency. Secondly, the limestone-gypsum wet desulfurization process generates a large amount of wastewater, which requires treatment, further increasing the cost of flue gas purification.

[0034] Based on this, embodiments of the present invention provide a flue gas purification reaction device to achieve the purpose of reducing the cost of flue gas purification and improving the efficiency of flue gas purification.

[0035] Reference Figure 1The diagram shows a structural schematic of a flue gas purification reaction device provided in an embodiment of this application. Figure 1 As shown, the flue gas purification reaction device includes multiple reaction chambers 1; a first target chamber or a second target chamber 1 is equipped with a powder silo 11, a conveying pipe 12, an intermediate chamber 13, an ion cascade generating pipe 14, a powder circulation hopper 15, a first scraper conveyor 16, an elevator 17, and a second scraper conveyor 18; the powder silo 11 is connected to the inlet end of the intermediate chamber 13 through the conveying pipe 12, the outlet end of the intermediate chamber 13 is connected to the first end of the ion cascade generating pipe 14, and the second end of the ion cascade generating pipe 14 is connected to the inlet of the powder circulation hopper 15; the powder... The discharge port of the circulating hopper 15 is connected to the first scraper conveyor 16; when the reaction chamber 1 is the first target chamber, the powder silo 11 is used to store limestone powder, and when the reaction chamber 1 is the second target chamber, the powder silo 11 is used to store denitrification catalyst powder. The first target chamber is the chamber used for desulfurization reaction among the multiple reaction chambers 1, and the second target chamber is the chamber used for denitrification reaction among the multiple reaction chambers 1. The first scraper conveyor 16 and the second scraper conveyor 18 are connected by an elevator 17. The second scraper conveyor 18 is located between the intermediate silo 13 and the first end of the ion waterfall generating pipe 14.

[0036] The flue gas purification reaction device includes multiple reaction chambers 1, which are separated from each other by guide baffles. It should be noted that each guide baffle is fixed between two adjacent reaction chambers 1, thus separating them. Taking five reaction chambers 1 as an example, they can specifically be a first chamber, a second chamber, a third chamber, a fourth chamber, and a fifth chamber. The first chamber can be a dust removal chamber, where the dust collected in the hopper can be used for industrial products or comprehensive utilization in cement plants to improve the recovery and utilization rate of flue gas. The second chamber is mainly used for dry desulfurization. The limestone powder transported to the second chamber reacts chemically with sulfur dioxide in the flue gas, and the final product is calcium sulfate, i.e., gypsum, which can be used in building materials. Furthermore, the ionization process in the ion cascade generator 14 in the second chamber is beneficial to the desulfurization reaction and can further improve the desulfurization efficiency. The third chamber can be used for secondary dust removal to collect the gypsum and other powdery products formed during desulfurization. The fourth chamber can be used for the denitrification reaction. The denitrification catalyst powder, such as FeSO4*7H2O (ferrous sulfate heptahydrate), fed into the second chamber reacts chemically with sulfur dioxide in the flue gas to complete the denitrification reaction. The fifth chamber can serve as a backup chamber. If further improvement in desulfurization efficiency is needed, it can be used for secondary desulfurization; if further improvement in dust removal efficiency is needed, dust removal can be performed again, thus further enhancing the efficiency of both dust removal and desulfurization.

[0037] It should also be noted that, taking the above embodiment as an example, the second chamber can be the first target chamber described in the embodiment of the present invention, and the fourth chamber can be the second target chamber described in the embodiment of the present invention.

[0038] Multiple reaction chambers 1 are equipped with a powder silo 11, a conveying pipe 12, an intermediate silo 13, an ion cascade generator 14, a powder circulation hopper 15, a first scraper conveyor 16, an elevator 17, and a second scraper conveyor 18. The powder silo 11 is used to store limestone powder, and its volume is determined based on the amount of limestone powder stored in the flue gas purification reaction device. Furthermore, the outlet of the powder silo 11 can be controlled by valves such as check valves and shut-off valves to ensure the normal outflow of limestone powder. These valves should have functions such as shut-off, regulation, diversion, backflow prevention, pressure stabilization, diversion, or overflow pressure relief to guarantee the normal outflow of limestone powder.

[0039] The powder silo 11 is connected to the feed end of the intermediate silo 13 via a conveying pipe 12. The conveying pipe 12 should be made of wear-resistant material to increase its service life. Furthermore, it should be noted that a single-compartment pump 22 can also be installed in the reaction chamber 1; the single-compartment pump 22 is connected to the discharge port of the powder silo 11, and is used to transport limestone powder to the intermediate silo 13 via the conveying pipe 12.

[0040] The intermediate silo 13 is used to store the powder conveyed from the powder silo 11 and distribute the stored powder to each ion cascade generating pipe 14. When the reaction chamber 1 is the first target chamber, the powder silo 11 is used to store limestone powder; when the reaction chamber 1 is the second target chamber, the powder silo 11 is used to store the denitrification catalyst. The intermediate silo 13 is a cavity with two open ends, specifically including a discharge end and a feed end, which are opposite ends of the intermediate silo 13. The feed end of the intermediate silo 13 is connected to the silo via the conveying pipe 12, the discharge end of the intermediate silo 13 is connected to the first end of the ion cascade generating pipe 14, and the second end of the ion cascade generating pipe 14 is connected to the feed inlet of the powder circulation hopper 15.

[0041] Optionally, each reaction chamber 1 is provided with multiple ion cascade generating tubes 14, and the first end of each ion cascade generating tube 14 is connected to a powder circulation hopper 15.

[0042] Specifically, one ion cascade generating pipe 14 corresponds to one intermediate chamber 13, and one ion cascade generating pipe 14 corresponds to one powder circulation hopper 15. The ion cascade generating pipe 14 can be a tubular or honeycomb dust collecting electrode. The ion cascade generating pipe 14 can be fixed to the top of the inner cavity of the reaction chamber 1 by steel cables and expands towards the bottom of the cavity. It should be noted that the ion cascade generating pipe 14 can generate a strong ion field, pushing PM10 and smaller fine particulate matter in the flue gas to the collection wall. In this way, when the absorbent flows out of the intermediate chamber 13 and falls into the ion cascade generating pipe 14, it is activated by electro-ionization and further reacts with the flue gas to complete the desulfurization or denitrification reaction. Thus, since multiple ion cascade generating pipes 14 are provided in each reaction chamber 1, the multiple ion cascade generating pipes 14 can react synergistically, thereby improving the dust removal efficiency.

[0043] The discharge port of the powder circulation hopper 15 is connected to the first scraper conveyor 16. The first scraper conveyor 16 and the second scraper conveyor 18 are connected by an elevator 17. The second scraper conveyor 18 is located between the intermediate bin 13 and the first end of the ion cascade generating pipe 14. In this way, after removing particulate matter from the flue gas, the resulting limestone powder can be collected by the powder circulation hopper 15 and conveyed to the second scraper conveyor 18 via the elevator 17, and then fed back to the ion cascade generating pipe 14 for desulfurization reaction, so that the particulate matter in the flue gas can be reused. It should be noted that the first scraper conveyor 16 and the second scraper conveyor 18 can both be side double chain type, quasi-side double chain type, middle single chain type, middle double chain type, and triple chain type scraper conveyors. Their transmission method can be electric or hydraulic, which will not be elaborated in this embodiment of the invention.

[0044] As can be seen from the above embodiments, when flue gas is purified using the flue gas purification reaction device provided in this embodiment of the invention, when the reaction chamber 1 is the first target chamber, since the powder silo 11 is used to store limestone powder, the powder silo 11 is connected to the feed end of the intermediate silo 13 through the conveying pipe 12, the discharge end of the intermediate silo 13 is connected to the first end of the ion cascade generating pipe 14, and the second end of the ion cascade generating pipe 14 is connected to the feed inlet of the powder circulation hopper 15, therefore, when the limestone powder reaches the ion cascade generating pipe 14 through the intermediate silo 13, the powder... The limestone powder can react with sulfur dioxide in the flue gas. Since the outlet of the powder circulation hopper 15 is connected to the first scraper conveyor 16, and the first scraper conveyor 16 and the second scraper conveyor 18 are connected via an elevator 17, with the second scraper conveyor 18 located between the intermediate chamber 13 and the first end of the ion cascade generating tube 14, the sulfur dioxide in the flue gas can be absorbed by the dry limestone powder circulation. This improves desulfurization efficiency without generating large amounts of wastewater, thus eliminating the need for wastewater treatment and saving on flue gas purification costs. When the reaction chamber 1 is the second target chamber, since the powder hopper 11 stores the nitrate catalyst powder, when the catalyst powder reaches the ion cascade generating tube 14, the powdered catalyst can fully react with nitrogen oxides in the flue gas, thereby accelerating the desulfurization reaction rate and improving the flue gas purification efficiency.

[0045] Optionally, a flue gas baffle 19 is provided between every two adjacent ion cascade generating tubes 14.

[0046] It should be noted that the ion cascade generating tube 14 generates a large amount of dust during the vibration cleaning process. Therefore, the reaction chamber 1 needs to be divided into multiple sub-chambers by the flue gas baffle 19, so that the ion cascade generating tubes 14 in the multiple sub-chambers can work independently. When dust is generated by one ion cascade generating tube 14 during the vibration cleaning process, it can be absorbed by other ion cascade generating tubes 14, thereby avoiding secondary dust generation and improving the efficiency of flue gas purification.

[0047] Optionally, a first impeller feeder 20 and a feeding tube 21 are also provided between the discharge end of the intermediate chamber 13 and the first end of the ion waterfall generating tube 14; the input end of the first impeller feeder 20 is connected to the discharge end of the intermediate chamber 13, the output end of the first impeller feeder 20 is connected to the inlet of the feeding tube 21, and the discharge outlet of the feeding tube 21 is connected to the first end of the ion waterfall generating tube 14.

[0048] It should be noted that the first impeller feeder 20 may include multiple blades with gaps between them. When the powder stored in the intermediate bin 13 enters the gaps between the blades from the input end of the first impeller feeder 20, it is discharged from the output end of the first impeller feeder 20 as the blades rotate. Furthermore, since the output end of the first impeller feeder 20 is connected to the inlet of the feeding pipe 21, and the outlet of the feeding pipe 21 is connected to the first end of the ion cascade generating pipe 14, the powder can be quantitatively and continuously delivered to the ion cascade generating pipe 14 under the guidance of the feeding pipe 21, ensuring that the reaction rate between the powder and the flue gas is not affected by the powder conveying rate.

[0049] Optionally, the flow area of ​​the feed inlet of the feed tube 21 is smaller than the flow area of ​​the discharge outlet of the feed tube 21.

[0050] It should be noted that when the flow area of ​​the feed inlet of the feed tube 21 is smaller than the flow area of ​​the discharge outlet of the feed tube 21, the increased flow area reduces the resistance to the powder as it flows into the ion cascade generator tube 14, resulting in more uniform powder dispersion and better contact between the powder and the flue gas, thereby improving the efficiency of flue gas purification.

[0051] Optionally, the flow area of ​​the feeding tube 21 decreases along a first direction, wherein the first direction is the extension direction from the inlet to the outlet of the feeding tube 21.

[0052] It should be noted that when the flow area of ​​the feeding tube 21 decreases along the first direction, the feeding tube 21 forms a downward funnel shape. As the powder flows into the ion cascade generator tube 14 through the feeding tube 21, the resistance to the powder gradually decreases, which is more conducive to the uniform dispersion of the powder and makes the contact between the powder and the flue gas more sufficient, thereby further improving the efficiency of flue gas purification.

[0053] Optionally, a second impeller feeder 23 is provided between the discharge port of the powder circulating hopper 15 and the first scraper conveyor 16.

[0054] It should be noted that the second impeller feeder 23 and the first impeller feeder 20 have the same structure and principle. When the second impeller feeder 23 is set between the outlet of the powder circulation hopper 15 and the first scraper conveyor 16, the powder flowing out of the outlet of the powder circulation hopper 15 can reach the first scraper conveyor 16 in a quantitative and continuous manner, thereby avoiding excessive accumulation of powder in the powder circulation hopper 15.

[0055] Optionally, a third impeller feeder 24 is provided between the feed end of the conveying pipe 12 and the intermediate bin 13.

[0056] It should be noted that the second impeller feeder 23 and the first impeller feeder 20 have the same structure and principle. When a third impeller feeder 24 is provided between the feed end of the conveying pipe 12 and the intermediate bin 13, the powder flowing out of the conveying pipe 12 can reach the intermediate bin 13 quantitatively and continuously, thereby ensuring continuous material supply.

[0057] It should also be noted that the first impeller feeder 20, the second impeller feeder 23, and the third impeller feeder 24 can all be controlled by motor frequency conversion, thereby ensuring the safety and controllability of the powder conveying process.

[0058] Optionally, an ion waterfall generating tube 14 may also have an ion waterfall corona electrode 25 suspended at its first end.

[0059] Specifically, the ion cascade corona electrode 25 can be fixed to the first end of the ion cascade generating tube 14 by a spring support, so that the ion cascade corona electrode 25 can continuously discharge to ensure the continuity of flue gas purification.

[0060] As can be seen from the above embodiments, when flue gas is purified using the flue gas purification reaction device provided in this embodiment of the invention, when the reaction chamber 1 is the first target chamber, since the powder silo 11 is used to store limestone powder, the powder silo 11 is connected to the feed end of the intermediate silo 13 through the conveying pipe 12, the discharge end of the intermediate silo 13 is connected to the first end of the ion cascade generating pipe 14, and the second end of the ion cascade generating pipe 14 is connected to the feed inlet of the powder circulation hopper 15, therefore, when the limestone powder reaches the ion cascade generating pipe 14 through the intermediate silo 13, the powder... The limestone powder can react with sulfur dioxide in the flue gas. Since the outlet of the powder circulation hopper 15 is connected to the first scraper conveyor 16, and the first scraper conveyor 16 and the second scraper conveyor 18 are connected via an elevator 17, with the second scraper conveyor 18 located between the intermediate chamber 13 and the first end of the ion cascade generating tube 14, the sulfur dioxide in the flue gas can be absorbed by the dry limestone powder circulation. This improves desulfurization efficiency without generating large amounts of wastewater, thus eliminating the need for wastewater treatment and saving on flue gas purification costs. When the reaction chamber 1 is the second target chamber, since the powder hopper 11 stores the nitrate catalyst powder, when the catalyst powder reaches the ion cascade generating tube 14, the powdered catalyst can fully react with nitrogen oxides in the flue gas, thereby accelerating the desulfurization reaction rate and improving the flue gas purification efficiency.

[0061] In addition, a flue gas baffle 19 is provided between each two adjacent ion cascade generating tubes 14, so that the ion cascade generating tubes 14 in multiple sub-chambers can work independently. When a certain ion cascade generating tube 14 generates dust during the vibration cleaning process, it can be absorbed by other ion cascade generating tubes 14, thereby avoiding secondary dust generation and improving the efficiency of flue gas purification.

[0062] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] Although optional embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the optional embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0064] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0065] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the principles and implementation methods of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A flue gas cleaning reaction apparatus, characterized by, The flue gas purification reaction device comprises a plurality of reaction chambers; each adjacent two reaction chambers are separated by a flow baffle; A first target chamber or a second target chamber in the plurality of reaction chambers is provided with a powder bin, a conveying pipe, an intermediate bin, an ion waterfall generating pipe, a powder circulating hopper, a first scraper, an elevator, and a second scraper; The powder bin is communicated with the intermediate bin through the conveying pipe and the feeding end of the intermediate bin, the discharging end of the intermediate bin and the first end of the ion waterfall generating pipe are communicated, the second end of the ion waterfall generating pipe and the feeding port of the powder circulating hopper are connected, and the discharging port of the powder circulating hopper and the first scraper are connected; The first end of the ion waterfall generating pipe is also hung with an ion waterfall corona pole; In the case that the reaction chamber is the first target chamber, the powder bin is used for storing limestone powder, and in the case that the reaction chamber is the second target chamber, the powder bin is used for storing denitration catalyst powder, wherein the first target chamber is a chamber for desulfurization reaction in the plurality of reaction chambers, and the second target chamber is a chamber for denitration reaction in the plurality of reaction chambers; The first scraper and the second scraper are connected through the elevator, and the second scraper is located between the intermediate bin and the first end of the ion waterfall generating pipe.

2. The flue gas cleaning reaction apparatus according to claim 1, characterized by Each reaction chamber is provided with a plurality of ion waterfall generating pipes, and the first end of each ion waterfall generating pipe is connected with one powder circulating hopper.

3. The flue gas cleaning reaction apparatus according to claim 2, characterized by A flue gas baffle is arranged between each adjacent two ion waterfall generating pipes.

4. The flue gas cleaning reaction apparatus according to claim 1, characterized by A first impeller feeder and a stirring pipe are further arranged between the discharging end of the intermediate bin and the first end of the ion waterfall generating pipe; The input end of the first impeller feeder is connected with the discharging end of the intermediate bin, the output end of the first impeller feeder is connected with the feeding port of the stirring pipe, and the discharging port of the stirring pipe is connected with the first end of the ion waterfall generating pipe.

5. The flue gas cleaning reaction apparatus according to claim 4, characterized by The flow area of the feeding port of the stirring pipe is smaller than the flow area of the discharging port of the stirring pipe.

6. The flue gas cleaning reaction apparatus according to claim 5, characterized by The flow area of the stirring pipe decreases along a first direction, wherein the first direction is the extension direction of the feeding port to the discharging port of the stirring pipe.

7. The flue gas cleaning reaction apparatus according to claim 1, characterized by A single-bin pump is further arranged in the reaction chamber; The single-bin pump is connected with the discharging port of the powder bin, and is used for conveying the limestone powder to the intermediate bin through the conveying pipe.

8. The flue gas cleaning reactor of claim 1, wherein A second impeller feeder is arranged between the discharging port of the powder circulating hopper and the first scraper.

9. The flue gas cleaning reactor of claim 1, wherein, A third impeller feeder is arranged between the conveying pipe and the feeding end of the intermediate bin.

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