Waste incineration tail gas purification tower

Abstract

The utility model discloses a waste incineration tail gas purification tower, which comprises a purification chamber, a sprayer, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas outlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the movable ring is mounted in the purification chamber, and a scraping ring is mounted at the lower end of the movable ring; the discharge pipe is connected to the bottom of the purification chamber and is used for discharging waste liquid; and the filter screen is mounted in the purification chamber. According to the waste incineration tail gas purification tower, an alkaline solution is sprayed through the six first atomization nozzles and the second atomization nozzle of the sprayer, the spraying range of the solution is widened, after the alkaline solution and acid gas in tail gas are neutralized, generated solid impurities can be attached to the inner wall of the purification chamber, and the waste incineration tail gas is purified. The motor can be started to drive the screw rod to rotate, then the movable ring descends, the scraping ring is used for scraping solid impurities, and the impurities are prevented from being attached to the inner wall of the purification chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a waste incineration tail gas purification tower. Background Art

[0002] Waste incineration is an effective method of waste disposal. Its main purpose is to achieve the harmlessness, reduction and resource utilization of waste. Waste incineration can effectively reduce the volume of garbage, completely eliminate various pathogens, and generate electricity through waste incineration, which has a dual carbon emission reduction effect.

[0003] During the high-temperature combustion process, certain chemical components in the garbage will change and produce acidic gases. For example, chlorine-containing compounds such as PVC plastics will produce HCl when burned; sulfur-containing compounds will generate SO2 when burned; and so on. Untreated acidic gases discharged into the atmosphere will cause environmental problems such as acid rain, and affect human respiratory health, so the exhaust gas must be purified before it is discharged.

[0004] When purifying the tail gas after waste incineration, alkaline solution is usually used for purification. In this process, the alkaline solution will react with the acidic gas in the tail gas to neutralize it, which is likely to produce some salt solid impurities. The impurities are easy to adhere to the inner wall, which can easily cause pipe blockage after long-term use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a waste incineration tail gas purification tower, the purpose of which is to solve the above problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A waste incineration tail gas purification tower comprises a purification chamber, an outer end of which is connected to an air inlet pipe and an exhaust pipe, and further comprises:

[0008] A sprayer is installed at the top of the inner end of the purification chamber to spray the tail gas with an alkaline solution;

[0009] A movable ring is installed inside the clean room, and a scraper ring is installed at the lower end of the movable ring;

[0010] A discharge pipe connected to the bottom of the purification chamber for discharging waste liquid;

[0011] The filter is installed inside the discharge pipe to intercept solid impurities.

[0012] Preferably, the sprayer comprises:

[0013] A liquid dispensing cylinder fixed to the top of the inner end of the purification chamber;

[0014] Six first atomizing nozzles are installed at equal angles on the outside of the liquid separation cylinder to expand the spraying range;

[0015] The second atomizing nozzle is installed at the bottom of the liquid separation cylinder.

[0016] Preferably, a delivery pump is installed at the top of the outer end of the purification chamber, and a discharge pipe is connected to the discharge end of the delivery pump, and the delivery pump is connected to the liquid separation cylinder through the discharge pipe;

[0017] The first atomizing nozzle and the second atomizing nozzle are both connected to the liquid separation cylinder through a delivery pipeline.

[0018] Preferably, a screw is rotatably connected to one side of the interior of the purification chamber, the screw is threadedly connected to the movable ring, and a fixed rod is fixed to the other side of the interior of the purification chamber, the fixed rod passes through the interior of the movable ring;

[0019] The outer surface of the scraper ring is in contact with the inner wall of the clean room.

[0020] Preferably, a motor is also installed at the upper end of the purification chamber, and the output shaft of the motor is connected to the screw.

[0021] Preferably, the filter screen is clamped inside the discharge pipe through an outer ring fixed at the outer end, and a mounting ring is installed on the lower side of the discharge pipe, which is plugged into the discharge pipe through a docking ring fixed at the upper end so as to abut against the outer ring.

[0022] Preferably, mounting blocks are fixed on both sides of the outer end of the discharge pipe, and a slider is slidably connected to the inside of the mounting block, a pressing rod is fixed to the lower end of the slider, and the pressing rod extends to the outside of the mounting block, a positioning frame is installed on the outside of the slider, and a return spring is abutted at the upper end of the slider, and the return spring is located inside the mounting block.

[0023] Preferably, a slide groove is provided inside the sliding block, and one end of the positioning frame is slidably connected to the inside of the slide groove.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model provides a waste incineration tail gas purification tower, which sprays an alkaline solution through six first atomizing nozzles and a second atomizing nozzle of a sprayer, thereby increasing the spraying range of the solution. After the alkaline solution is neutralized with the acidic gas in the tail gas, the generated solid impurities will adhere to the inner wall of the purification chamber, and the screw can be driven to rotate by a starting motor to make the movable ring descend, and the solid impurities can be scraped off by a scraping ring to prevent the impurities from adhering to the inner wall of the purification chamber; when the waste liquid is discharged, the solid impurities carried in the waste liquid can be intercepted and filtered by a filter to prevent the impurities from being mixed into the waste liquid again. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0028] Figure 3 It is a schematic diagram of the overall structure of the sprayer of the utility model;

[0029] Figure 4 This is a schematic diagram of the overall structure of the screw rod and the movable ring connected to the utility model;

[0030] Figure 5 This is a schematic diagram of the overall structure of the connection between the positioning frame and the slider of the utility model;

[0031] Figure 6 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0032] In the figure: 1, purification chamber; 11, air inlet pipe; 12, exhaust pipe; 2, movable ring; 21, scraper ring; 3, screw; 31, motor; 4, fixed rod; 5, sprayer; 50, delivery pump; 51, liquid separation cylinder; 52, first atomizing nozzle; 53, second atomizing nozzle; 54, delivery pipeline; 6, discharge pipe; 61, mounting ring; 62, docking ring; 7, filter; 71, outer ring; 8, mounting block; 81, slider; 82, pressing rod; 83, positioning frame; 811, slide groove; 9, reset spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] A waste incineration tail gas purification tower comprises a purification chamber 1, the outer end of the purification chamber 1 is connected with an air inlet pipe 11 and an exhaust pipe 12, wherein the connection between the air inlet pipe 11 and the exhaust pipe 12 and the purification chamber 1 can be made by using existing pipelines, the exhaust gas after the waste is burned is introduced into the purification chamber 1 through the air inlet pipe 11, and the purified exhaust gas is discharged from the exhaust pipe 12, and solenoid valves are installed inside the air inlet pipe 11 and the exhaust pipe 12 to control the intake and exhaust of gas, and the solenoid valves can be existing devices on the market.

[0035] In this example, see Figure 1 , Figure 2 , Figure 3 and Figure 4 A sprayer 5 is installed at the top of the inner end of the purification chamber 1 to spray the exhaust gas entering the purification chamber 1. The sprayer 5 includes a liquid separator 51 fixed to the top of the inner end of the purification chamber 1. Six first atomizing nozzles 52 are installed at equal angles on the outer end of the liquid separator 51. A second atomizing nozzle 53 is installed at the bottom of the liquid separator 51. The first atomizing nozzle 52 and the second atomizing nozzle 53 are connected to the liquid separator 51 through a delivery pipe 54. The first atomizing nozzle 52 and the second atomizing nozzle 53 are connected to the liquid separator 51 through the delivery pipe 54. The first atomizing nozzle 52 and the second atomizing nozzle 53 convey the alkaline solution. Arranging multiple first atomizing nozzles 52 can expand the spraying range and improve the neutralization effect of the solution and the exhaust gas. A delivery pump 50 is installed on the top of the outer end of the purification chamber 1. The discharge end of the delivery pump 50 is connected with a discharge pipe. The delivery pump 50 is connected to the liquid separation cylinder 51 through the discharge pipe. The delivery pump 50 extracts the alkaline solution and conveys it into the liquid separation cylinder 51, and the solution is sprayed through the first atomizing nozzle 52 and the second atomizing nozzle 53.

[0036] Furthermore, a movable ring 2 is installed inside the purification chamber 1, and a scraper ring 21 is installed at the lower end of the movable ring 2, and the outer surface of the scraper ring 21 is in contact with the inner wall of the purification chamber 1, so that when the movable ring 2 is lifted or lowered, the solid impurities attached to the inner wall of the purification chamber 1 can be scraped off by the scraper ring 21, and at the same time, a screw rod 3 is rotatably connected to one side of the interior of the purification chamber 1, and a fixed rod 4 is fixed on the other side thereof, and a motor 31 is also installed at the upper end of the purification chamber 1, and the output shaft of the motor 31 is connected to the screw rod 3. The specific connection method can adopt the existing technology, which can drive the screw rod 3 to rotate after starting the motor 31, and the screw rod 3 is threadedly connected to the movable ring 2, and the fixed rod 4 runs through the interior of the movable ring 2. Through the limiting effect of the fixed rod 4 on the movable ring 2, the movable ring 2 can be driven to be lifted or lowered when the screw rod 3 rotates, and the solid impurities attached to the inner wall of the purification chamber 1 are scraped off by the scraper ring 21.

[0037] For further examples, see Figure 1 , Figure 2 , Figure 5 and Figure 6 A discharge pipe 6 is connected to the bottom of the purification chamber 1, and a solenoid valve is installed inside the discharge pipe 6. After the solenoid valve in the discharge pipe 6 is opened, the waste liquid after the neutralization reaction can be discharged through the discharge pipe 6. A filter screen 7 is installed inside the discharge pipe 6. The filter screen 7 is clamped in the discharge pipe 6 through an outer ring 71 fixed at the outer end. The filter screen 7 filters the waste liquid discharged from the discharge pipe 6, and the solid impurities in the waste liquid are intercepted by the filter screen 7 to prevent the impurities from mixing into the waste liquid again, which makes it inconvenient to carry out subsequent treatment of the waste liquid.

[0038] Furthermore, a mounting ring 61 is installed on the lower side of the discharge pipe 6, and the mounting ring 61 is plugged into the discharge pipe 6 through a docking ring 62 fixed at the upper end. After the docking ring 62 is plugged into the discharge pipe 6, the outer ring 71 can be abutted through the docking ring 62, wherein the upper and lower surfaces of the outer ring 71 can be bonded with a sealing gasket, so that the outer ring 71 can be fitted with the discharge pipe 6 and the docking ring 62 through the sealing gasket to improve the sealing performance.

[0039] Furthermore, mounting blocks 8 are fixed on both sides of the outer end of the discharge pipe 6, and a slider 81 is slidably connected inside the mounting block 8. A pressing rod 82 is fixed to the lower end of the slider 81, and the pressing rod 82 extends to the outside of the mounting block 8. The slider 81 can be driven to rise by pressing the pressing rod 82. A positioning frame 83 is installed on the outside of the slider 81, and a sliding groove 811 is opened inside the slider 81. One end of the positioning frame 83 is slidably connected to the inside of the sliding groove 811, and the sliding groove 811 is used to limit the sliding of the positioning frame 83. When the slider 81 is raised or lowered, the positioning frame 83 can be driven to slide.

[0040] At the same time, the upper end of the slider 81 is abutted against a return spring 9, which is located inside the mounting block 8. Under the elastic force of the return spring 9, a downward thrust is generated on the slider 81. At this time, the positioning frame 83 slides toward the side close to the discharge pipe 6 and is clamped with the docking ring 62.

[0041] Working principle: exhaust gas after garbage combustion is introduced into the purification chamber 1 through the air inlet pipe 11. After the exhaust gas is introduced into the purification chamber 1, the solenoid valve in the air inlet pipe 11 is closed. At this time, the delivery pump 50 is started to deliver the alkaline solution to the sprayer 5, and the exhaust gas is sprayed through the first atomizing nozzle 52 and the second atomizing nozzle 53. The alkaline solution and the acidic gas in the exhaust gas are neutralized to purify the exhaust gas. In this process, some salt solid impurities will be generated due to the acid-base neutralization reaction. The solid impurities are easily attached to the inner wall of the purification chamber 1. At this time, the motor 31 is started to drive the screw 3 to rotate, so that the movable ring 2 drives the scraper ring 21 to move downward, and the solid impurities are scraped off by the scraper ring 21. The solid impurities will be mixed into the waste liquid at the bottom of the purification chamber 1.

[0042] After the gas purification in the purification chamber 1 is completed, the solenoid valve in the discharge pipe 6 is opened to discharge the waste liquid. When the waste liquid is discharged, the filter 7 intercepts the solid impurities. When the impurities in the discharge pipe 6 need to be cleaned or the filter 7 needs to be replaced, the pressing rods 82 on both sides of the discharge pipe 6 are pressed upward. At this time, the slider 81 rises, and then the positioning frame 83 is translated to the side away from the discharge pipe 6. When the positioning frame 83 is no longer clamped with the docking ring 62, the mounting ring 61 and the docking ring 62 are first removed from the discharge pipe 6. At this time, the docking ring 62 no longer abuts the outer ring 71, and the filter 7 can be taken out of the discharge pipe 6.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste incineration tail gas purification tower, comprising a purification chamber (1), wherein the outer end of the purification chamber (1) is connected to an air inlet pipe (11) and an exhaust pipe (12), characterized in that: Also includes: A sprayer (5) is installed at the top of the inner end of the purification chamber (1) to spray an alkaline solution on the tail gas; A movable ring (2) is installed inside the purification chamber (1), and a scraper ring (21) is installed at the lower end of the movable ring (2); A discharge pipe (6) connected to the bottom of the purification chamber (1) for discharging waste liquid; The filter (7) is installed inside the discharge pipe (6) to intercept solid impurities.

2. A waste incineration tail gas purification tower according to claim 1, characterized in that: The sprayer (5) comprises: A liquid separation cylinder (51) fixed to the top of the inner end of the purification chamber (1); Six first atomizing nozzles (52) are installed at equal angles on the outside of the liquid separation cylinder (51) to expand the spraying range; The second atomizing nozzle (53) is installed at the bottom of the liquid separation cylinder (51).

3. A waste incineration tail gas purification tower according to claim 2, characterized in that: A delivery pump (50) is installed at the top of the outer end of the purification chamber (1), and a discharge pipe is connected to the discharge end of the delivery pump (50), and the delivery pump (50) is connected to the liquid separation cylinder (51) via the discharge pipe; The first atomizing nozzle (52) and the second atomizing nozzle (53) are both connected to the liquid separation cylinder (51) via a delivery pipeline (54).

4. A waste incineration tail gas purification tower according to claim 1, characterized in that: A screw rod (3) is rotatably connected to one side of the interior of the purification chamber (1), and the screw rod (3) is threadedly connected to the movable ring (2). A fixed rod (4) is fixed to the other side of the interior of the purification chamber (1), and the fixed rod (4) passes through the interior of the movable ring (2); The outer surface of the scraper ring (21) fits against the inner wall of the purification chamber (1).

5. A waste incineration tail gas purification tower according to claim 4, characterized in that: A motor (31) is also installed at the upper end of the purification chamber (1), and the output shaft of the motor (31) is connected to the screw rod (3).

6. A waste incineration tail gas purification tower according to claim 1, characterized in that: The filter screen (7) is clamped inside the discharge pipe (6) via an outer ring (71) fixed at the outer end; a mounting ring (61) is mounted on the lower side of the discharge pipe (6); the mounting ring (61) is plugged into the discharge pipe (6) via a docking ring (62) fixed at the upper end so as to abut against the outer ring (71).

7. A waste incineration tail gas purification tower according to claim 1, characterized in that: Mounting blocks (8) are fixed to both sides of the outer end of the discharge pipe (6), and a slider (81) is slidably connected to the inside of the mounting block (8). A pressing rod (82) is fixed to the lower end of the slider (81), and the pressing rod (82) extends to the outside of the mounting block (8). A positioning frame (83) is installed on the outside of the slider (81). A return spring (9) is abutted against the upper end of the slider (81), and the return spring (9) is located inside the mounting block (8).

8. A waste incineration tail gas purification tower according to claim 7, characterized in that: A sliding groove (811) is provided inside the sliding block (81), and one end of the positioning frame (83) is slidably connected to the inside of the sliding groove (811).

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