Discharging device for flue gas purification and denitration

Abstract

The discharging device for flue gas purification and denitration comprises a purification box, and a purification and denitration mechanism is arranged in the purification box; the purification and denitration mechanism comprises a partition plate, the partition plate is fixed to the purification box and provided with a plurality of through openings, each through opening is provided with a first filter screen, a spraying mechanism is fixed to the upper portion of the partition plate and connected with an external circulating liquid conveying mechanism, and the input end of the circulating liquid conveying mechanism is located below the partition plate and communicated with the interior of the purification box; a treatment tank is mounted at the top of the purification box; the lower end of the treatment tank communicates with the purification box through a conduit; and the upper end of the treatment tank is communicated with the outside through a discharge pipe. The discharge device for flue gas purification and denitration provided by the utility model can improve the flue gas denitration effect.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification, and in particular to an emission device for flue gas purification and denitrification. Background Technology

[0002] Flue gas purification refers to the process of reducing the emission of harmful substances in flue gas through a series of technical means to protect the environment and human health. Denitrification is usually required in flue gas purification to convert nitrogen oxides in the flue gas into non-toxic or low-toxic substances. Existing equipment for flue gas denitrification often uses solution absorption in the purification stage. However, current methods generally involve directly passing the flue gas into a solution to absorb the nitrogen oxides. But this process generates bubbles when the flue gas is released into the solution. The nitrogen oxides inside these bubbles cannot come into contact with the solution, making denitrification difficult. Furthermore, when the flue gas inside the bubbles rises to the top of the solution and is discharged through the equipment, nitrogen oxides still remain in the flue gas, indicating that the denitrification effect needs improvement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an emission device for flue gas purification and denitrification, which can improve the denitrification effect of flue gas.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An emission device for flue gas purification and denitrification includes a purification box, the inside of which is equipped with a purification and denitrification mechanism;

[0006] The purification and denitrification mechanism includes a partition plate, which is fixed on the purification box and has multiple openings. Each opening is equipped with a filter screen. A spraying mechanism is fixed above the partition plate and is connected to an external circulating infusion mechanism. The input end of the circulating infusion mechanism is located below the partition plate and communicates with the inside of the purification box.

[0007] A treatment tank is installed on the top of the purification box, and the lower end of the treatment tank is connected to the purification box through a conduit; the upper end of the treatment tank is connected to the outside through a discharge pipe.

[0008] The spraying mechanism includes an annular pipe, the outer wall of which is fixed to the inner wall of the purification box by a fixing rod, and multiple nozzles are fixedly installed at the bottom of the annular pipe, with the nozzles located above the partition.

[0009] The circulating infusion mechanism includes a second connecting pipe. One end of the second connecting pipe extends into the purification tank and is connected to the annular pipe. The other end of the second connecting pipe extends out of the purification tank and is connected to the outlet of the pump. The inlet of the pump is connected to the first connecting pipe. The other end of the first connecting pipe extends into the purification tank and is located below the partition.

[0010] A second filter screen is installed at the interface where the first connecting pipe connects to the purification box.

[0011] An inlet pipe is fixedly installed on the upper left side of the purification box, and a second control valve is installed on the inlet pipe. A drain pipe is fixedly installed on the lower right side of the purification box, and a first control valve is installed on the drain pipe.

[0012] The upper end of the treatment tank is threaded with a sealing cap, and the lower end of the sealing cap is fixed with a connecting rod. The multi-layer activated carbon purification mesh passes through the connecting rod and is screwed into the limit position by a nut.

[0013] There are multiple connecting rods, and each connecting rod has a limit block fixed on its upper part. The limit block limits the upward movement of the multi-layer activated carbon purification mesh.

[0014] This utility model provides an emission device for flue gas purification and denitrification, which has the following technical effects:

[0015] 1) By setting up baffles and a No. 1 filter, when the flue gas generates bubbles in the absorbent liquid and rises to the inlet, the bubbles will come into contact with the No. 1 filter and burst, allowing the nitrogen oxides in the flue gas within the bubbles to come into contact with the solution for initial denitrification treatment. Circulating the absorbent liquid using a pump and spraying it further breaks up the bubbles floating on the surface of the absorbent liquid, further denitrifying the flue gas and thus improving the denitrification effect.

[0016] 2) By using a combination of treatment tank, conduit, multi-layer activated carbon purification mesh and discharge pipe, it is easy to purify the odor of flue gas after denitrification, and the combination of sealing cover, connecting rod, limit block and nut makes it easy to remove and replace the multi-layer activated carbon purification mesh. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the interior of the purification box in this utility model (first-person perspective).

[0020] Figure 3 This is a schematic diagram of the interior of the purification box in this utility model (second perspective).

[0021] Figure 4 This is a cross-sectional view of the processing tank of this utility model (the section lines are not shown).

[0022] Figure 5 This is a cross-sectional view of the inlet and the first filter screen of this utility model (the cross-sectional lines are not shown).

[0023] In the diagram: 1. Purification box; 2. Flue gas pipe; 3. Purification and denitrification mechanism; 4. Flue gas emission mechanism; 5. Sewage pipe; 6. No. 1 control valve; 7. Transparent observation window; 31. Liquid inlet pipe; 32. No. 2 control valve; 33. Partition plate; 34. Port; 35. No. 1 filter screen; 36. No. 1 connecting pipe; 37. No. 3 control valve; 38. Liquid pump; 39. No. 2 connecting pipe; 391. Ring pipe; 392. Nozzle; 393. Fixing rod; 394. Treatment tank; 41. Conduit pipe; 42. Sealing cap; 43. Connecting rod; 44. Multi-layer activated carbon purification net; 45. Limiting block; 46. Nut; 47. Discharge pipe; 48. Detailed Implementation

[0024] like Figure 1-5 As shown, an emission device for flue gas purification and denitrification includes a purification chamber 1. A transparent observation window 7 is fixedly installed on the upper front of the purification chamber 1. The purification chamber 1 is equipped with a purification and denitrification mechanism 3, which includes a partition 33. The edge of the partition 33 is fixedly installed inside the purification chamber 1. Multiple openings 34 are provided on the partition 33, and a first filter screen 35 is fixedly installed at each opening 34. A liquid pump 39 is fixedly installed on the left side of the purification chamber 1. A first connecting pipe 36 is fixedly installed at the input end of the liquid pump 39. A third control valve 38 is installed on the first connecting pipe 36. One end of the first connecting pipe 36 extends to the lower left of the purification chamber 1 and communicates with the interior of the purification chamber 1. A second filter screen 37 is installed at the interface. A second connecting pipe 391 is fixedly installed at the output end of the pump 39. A corresponding annular pipe 392 is located above the interior of the purification chamber 1. Fixing rods 394 are fixedly connected to the front, back, and right side of the outer wall of the annular pipe 392. The other end of each fixing rod 394 is fixed to the inner wall of the purification chamber 1. One end of the second connecting pipe 391 extends from the left side into the interior of the purification chamber 1 and is fixedly connected to and maintains communication with the annular pipe 392. Multiple nozzles 393 are fixedly installed at the bottom of the annular pipe 392, located above the partition 33.

[0025] An inlet pipe 31 is fixedly installed on the upper left side of the purification tank 1, and a second control valve 32 is installed on the inlet pipe 31. A drain pipe 5 is fixedly installed on the lower right side of the purification tank 1, and a first control valve 6 is installed on the drain pipe 5.

[0026] A flue pipe 2 is fixedly installed at the middle of the top of the purification box 1. The bottom end of the flue pipe 2 passes through the partition 33 and extends to the bottom of the inner cavity of the purification box 1.

[0027] The inlet pipe 31 and the second control valve 32 facilitate the injection of nitrogen oxide absorption liquid into the purification tank 1, ensuring that the absorption liquid covers the partition 33. The transparent observation window 7 facilitates the observation of the liquid level inside the purification tank 1.

[0028] The flue gas pipe 2 facilitates the discharge of the flue gas to be denitrified into the nitrogen oxide absorption liquid inside the purification box 1.

[0029] During operation, when bubbles are generated in the absorbent liquid, they rise to the opening 34 inside the baffle 33 and come into contact with the first filter screen 35, causing them to burst. This allows the nitrogen oxides in the flue gas within the bubbles to come into contact with the solution for denitrification. At this time, the arrangement of the first connecting pipe 36, the liquid pump 39, the second connecting pipe 391, and the annular pipe 392 facilitates the extraction of the absorbent liquid from the lower part of the purification tank 1. The liquid is then sprayed onto the upper part of the purification tank 1 through multiple nozzles 393, which breaks up the bubbles floating on the surface of the absorbent liquid and further denitrifies the flue gas. The drainage pipe 5 and the first control valve 6 facilitate the discharge of the nitrogen oxide absorbent liquid from inside the purification tank 1. The liquid pump 39 is a dedicated pump for nitrogen oxide absorbent liquid.

[0030] like Figure 1-2 , Figure 4 As shown, a flue gas emission mechanism 4 is provided on the right side of the top of the purification chamber 1. The flue gas emission mechanism 4 includes a treatment tank 41, and a conduit 42 is fixedly installed on the right side of the top of the purification chamber 1. The top end of the conduit 42 is fixedly installed in the middle of the bottom of the treatment tank 41. An exhaust pipe 48 is fixedly installed on the upper right side of the treatment tank 41. In this way, the purified gas enters the treatment tank 41 from the conduit 42 and is discharged from the exhaust pipe 48.

[0031] The upper end of the treatment tank 41 is threadedly connected to a sealing cap 43. Connecting rods 44 are fixedly connected to both sides of the bottom of the sealing cap 43. There are at least two connecting rods 44. A limiting block 46 is fixedly connected to the outer wall of each connecting rod 44 at a suitable height. A multi-layer activated carbon purification mesh 45 passes through the connecting rod 44 and contacts the limiting block 46. The uppermost end of the activated carbon purification mesh 45 is limited by the limiting block 46. The bottom end of the connecting rod 44 has external threads. A nut 47 is screwed into the external threads to limit and lock the bottom of the multi-layer activated carbon purification mesh 45.

[0032] The conduit 42 facilitates the discharge of denitrified flue gas from the purification chamber 1 into the treatment tank 41. After being purified by the multi-layer activated carbon purification mesh 45 to remove odors, the gas is discharged from one end of the discharge pipe 48. When the multi-layer activated carbon purification mesh 45 needs replacement after prolonged use, the operator can unscrew the sealing cap 43. The sealing cap 43, along with the connecting rod 44, moves the multi-layer activated carbon purification mesh 45 out of the treatment tank 41. Then, unscrew the nut 47 and remove the multi-layer activated carbon purification mesh 45 from the bottom of the connecting rod 44 to disassemble it. Conversely, when installing the multi-layer activated carbon purification mesh 45, the inner two sides of the multi-layer activated carbon purification mesh 45 are fitted under the outer walls of the two connecting rods 44. The upper part of the multi-layer activated carbon purification mesh 45 is limited by the limiting block 46. Then, the nut 47 is screwed on under the outer wall of the connecting rod 44, with the top of the nut 47 overlapping the lower part of the multi-layer activated carbon purification mesh 45. This fixes the multi-layer activated carbon purification mesh 45 to the outer wall of the connecting rod 44. Finally, the sealing cap 43 is screwed on the treatment tank 41, completing the replacement of the multi-layer activated carbon purification mesh 45.

[0033] Working principle and process:

[0034] 1) When using, first open the second control valve 32, and inject the nitrogen oxide absorption liquid into the purification tank 1 through the liquid inlet pipe 31, so that the absorption liquid covers the partition 33 and the liquid level of the nitrogen oxide absorption liquid is below the nozzle 393.

[0035] 2) Then, the flue gas is injected into the absorbent liquid inside the purification box 1 through the flue gas pipe 2. When the flue gas generates bubbles in the absorbent liquid, the bubbles float to the opening 34 inside the partition 33 and come into contact with the first filter screen 35, thereby causing an explosion. This allows the nitrogen oxides in the flue gas inside the bubbles to come into contact with the solution for denitrification treatment.

[0036] 3) At the same time, control valve 38 and pump 39 are turned on. The absorbent liquid in the lower part of the purification tank 1 is drawn through the connecting pipe 36 and pump 39 and discharged into the annular pipe 392 through the connecting pipe 391. Multiple nozzles 393 are used to spray the liquid into the purification tank 1, which can break up the bubbles floating on the surface of the absorbent liquid and further denitrify the flue gas.

[0037] 4) The flue gas after denitrification is discharged into the treatment tank 41 through the duct 42, and after being purified of odor by the multi-layer activated carbon purification net 45, it is discharged from one end of the discharge pipe 48.

Claims

1. A flue gas purification and denitrification emission device, comprising a purification chamber (1), characterized in that: The purification box (1) is equipped with a purification and denitrification mechanism (3); The purification and denitrification mechanism (3) includes a partition (33), which is fixed on the purification box (1) and has multiple openings (34). Each opening (34) is provided with a filter screen (35). A spraying mechanism is fixed above the partition (33). The spraying mechanism is connected to an external circulating infusion mechanism. The input end of the circulating infusion mechanism is located below the partition (33) and communicates with the inside of the purification box (1). The purification box (1) is equipped with a treatment tank (41) on top. The lower end of the treatment tank (41) is connected to the purification box (1) through a conduit (42). The upper end of the treatment tank (41) is connected to the outside through a discharge pipe (48).

2. The emission device for flue gas purification and denitrification according to claim 1, characterized in that: The spraying mechanism includes an annular pipe (392), the outer wall of which is fixed to the inner wall of the purification box (1) by a fixing rod (394), and multiple nozzles (393) are fixedly installed at the bottom of the annular pipe (392), with the nozzles (393) located above the partition (33).

3. The emission device for flue gas purification and denitrification according to claim 2, characterized in that: The circulating infusion mechanism includes a second connecting pipe (391), one end of which extends into the purification tank (1) and is connected to the annular pipe (392), and the other end of which extends out of the purification tank (1) and is connected to the outlet of the pump (39). The inlet of the pump (39) is connected to a first connecting pipe (36), and the other end of the first connecting pipe (36) extends into the purification tank (1) and is located below the partition (33).

4. The emission device for flue gas purification and denitrification according to claim 3, characterized in that: A second filter screen (37) is provided at the interface where the first connecting pipe (36) connects to the purification box (1).

5. The emission device for flue gas purification and denitrification according to claim 4, characterized in that: An inlet pipe (31) is fixedly installed on the upper left side of the purification box (1), and a second control valve (32) is installed on the inlet pipe (31). A drain pipe (5) is fixedly installed on the lower right side of the purification box (1), and a first control valve (6) is installed on the drain pipe (5).

6. The emission device for flue gas purification and denitrification according to claim 5, characterized in that: The upper end of the treatment tank (41) is threaded with a sealing cap (43), and the lower end of the sealing cap (43) is fixed with a connecting rod (44). The multi-layer activated carbon purification mesh (45) passes through the connecting rod (44) and is screwed into the limit position by a nut (47).

7. The emission device for flue gas purification and denitrification according to claim 6, characterized in that: There are multiple connecting rods (44), and each connecting rod (44) has a limit block (46) fixed on its upper part. The limit block (46) limits the upward movement of the multi-layer activated carbon purification net (45).

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