Circulating spraying tail gas absorption device suitable for water-based system

Abstract

The utility model relates to the technical field of circular spraying tail gas absorption, in particular to a circular spraying tail gas absorption device suitable for a water-based system, which comprises an absorption tower, a material collecting frame and a gas collecting device, the anti-overflow mechanism comprises a water outlet pipe fixedly communicated to the bottom end of the material collecting frame, a filter screen, a water guide ring and an inclined plate are fixedly connected to the inner bottom wall of the material collecting frame, the surface of the filter screen is in a conical shape, and a fixing block is arranged at the bottom end of the water outlet pipe; according to the device, a water guide ring and an inclined plate are matched with each other, so that a treating fluid flowing into a material collecting frame is guided into a water outlet pipe, and then the treating fluid in the material collecting frame is quickly discharged through the water outlet pipe; according to the mode, treatment liquid in the material collecting frame is discharged, so that impurities in the material collecting frame are prevented from flowing back into the absorption tower.

Description

Technical Field

[0001] This utility model relates to the field of circulating spray exhaust gas absorption technology, and in particular to a circulating spray exhaust gas absorption device suitable for aqueous systems. Background Technology

[0002] The water-based circulating spray exhaust gas absorption device is mainly based on the principle of gas-liquid mass transfer. It utilizes water or water-based absorbent liquid to fully contact the exhaust gas, so that the harmful components in the exhaust gas dissolve in the water, thereby achieving the purpose of purifying the exhaust gas. Circulating spraying continuously recycles the absorbent liquid, improving absorption efficiency and reducing costs.

[0003] According to the search, the Chinese patent "A spray device for a tail gas absorption tower" authorized announcement number "CN222586057U" uses a motor to drive the shaft to rotate, which drives the first scraper to scrape the impurities on the surface of the third filter plate into the slag collection tank for centralized collection, so as to avoid the third filter plate from becoming blocked and facilitate cleaning.

[0004] In the aforementioned application, some of the sprayed treatment liquid can easily flow through the third filter plate into the slag collection tank, causing impurities in the slag collection tank to flow back to the third filter plate due to the rise in water level, which can easily affect the cleaning effect of the third filter plate.

[0005] Therefore, a circulating spray exhaust gas absorption device suitable for aqueous systems is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a circulating spray exhaust gas absorption device suitable for aqueous systems to solve the above-mentioned problems, thereby improving the problem that the treated liquid in the spray section is easily guided into the slag collection tank through the third filter plate, and then the impurities in the slag collection tank are returned to the third filter plate by the rise in water level.

[0007] This utility model achieves the above-mentioned objectives through the following technical solution, applicable to a circulating spray exhaust gas absorption device for an aqueous system, comprising: an absorption tower, wherein a collection frame is fixedly connected to the lower end of the surface of the absorption tower; an anti-overflow mechanism, wherein the anti-overflow mechanism includes a water outlet pipe fixedly connected to the bottom end of the collection frame, a filter screen, a water guide ring, and an inclined plate are fixedly connected to the inner bottom wall of the collection frame, the surface of the filter screen is conical, a fixing block is provided at the bottom end of the water outlet pipe, a sealing plug is slidably connected to the lower end of the inner wall of the water outlet pipe, the surface of the sealing plug is slidably connected to the inner wall of the fixing block, and a spring is fixedly connected to the opposite end of the sealing plug and the fixing block. The treatment liquid flowing into the collection frame is guided to the outlet pipe by the cooperation of the water guide ring and the inclined plate. The treatment liquid in the collection frame is then quickly discharged through the outlet pipe. The treatment liquid flowing into the outlet pipe is filtered by the conical filter screen, which prevents impurities inside the collection frame from flowing into the outlet pipe through the treatment liquid. The elastic force of the spring pushes the sealing plug to move upward, thereby sealing the lower end of the inner wall of the outlet pipe and preventing external liquid from seeping into the collection frame through the outlet pipe.

[0008] Preferably, a sealing ring is snapped onto the top of the collection frame, and a ring of bolts is threaded onto the inner wall of the sealing ring. The bolts are threaded onto the inner wall of the collection frame. The bolts and the sealing ring work together to open the top of the collection frame, facilitating the cleaning of impurities inside the frame and the cleaning of the filter screen.

[0009] Preferably, the inner wall of the sealing ring is engaged with a shielding ring, the inner wall of the sealing ring is slidably connected with a slider, and the top of the slider is fixedly connected with a sliding rod.

[0010] Preferably, the inner wall of the shielding ring is slidably connected to the surface of the slide rod, the top of the sealing ring is fixedly connected to a fixing rod, and the inner wall of the slide rod is slidably connected to a locking rod, the surface of which engages with the inner wall of the fixing rod. The locking rod slides into the slide rod and engages with the fixing rod, thereby locking the shielding ring and ensuring its stable engagement with the sealing ring.

[0011] Preferably, one end of the lever is fixedly connected to an anti-detachment rope, and the other end of the anti-detachment rope is fixedly connected to the top of the cover ring.

[0012] Preferably, a waterproof gasket is fixedly connected to the opposite end of the sealing plug and the fixing block, and the surface of the spring is located inside the waterproof gasket. By protecting the spring surface with the waterproof gasket, the treatment liquid is prevented from adhering to the spring surface, thus ensuring the service life of the spring.

[0013] Preferably, the inner surface of the water guide ring is fixedly connected to the surface of the absorption tower.

[0014] The beneficial effects of this utility model are:

[0015] 1. By using the water guide ring and the inclined plate in combination, the treatment liquid flowing into the collection frame is guided to the outlet pipe, so that the treatment liquid in the collection frame can be quickly discharged through the outlet pipe. Compared with the existing slag collection tank, where the water level of the treatment liquid rises and the internal impurities are easily caused to flow back into the absorption tower, this method avoids the backflow of impurities in the collection frame into the absorption tower by discharging the treatment liquid in the collection frame.

[0016] 2. The treatment liquid flowing into the outlet pipe is filtered through a conical filter screen, preventing impurities inside the collection frame from flowing into the outlet pipe through the treatment liquid. The elastic force of the spring pushes the sealing plug upward, thereby blocking the lower end of the inner wall of the outlet pipe and preventing external liquid from seeping into the collection frame through the outlet pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the absorption tower of this utility model;

[0019] Figure 3 This is a schematic diagram of the anti-overflow mechanism of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] In the diagram: 1. Collection frame; 2. Overflow prevention mechanism; 21. Water outlet pipe; 22. Filter screen; 23. Sealing plug; 24. Spring; 25. Fixing block; 26. Waterproof pad; 27. Water guide ring; 28. Inclined plate; 29. ​​Sealing ring; 210. Bolt; 211. Sliding block; 212. Sliding rod; 213. Fixing rod; 214. Clamping rod; 215. Anti-detachment rope; 216. Shielding ring; 3. Absorption tower. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-4As shown, a circulating spray exhaust gas absorption device suitable for aqueous systems includes: an absorption tower 3, with a collection frame 1 fixedly connected to the lower end of the surface of the absorption tower 3; an overflow prevention mechanism 2, which includes a water outlet pipe 21 fixedly connected to the bottom end of the collection frame 1; a filter screen 22, a water guide ring 27, and an inclined plate 28 fixedly connected to the inner bottom wall of the collection frame 1; the surface of the filter screen 22 is conical; a fixing block 25 is provided at the bottom end of the water outlet pipe 21; a sealing plug 23 is slidably connected to the lower end of the inner wall of the water outlet pipe 21; the surface of the sealing plug 23 is slidably connected to the inner wall of the fixing block 25; a spring 24 is fixedly connected to the opposite end of the sealing plug 23 and the fixing block 25; and the inner surface of the water guide ring 27 is fixedly connected to the surface of the absorption tower 3. The sealing plug 23 is a rubber component.

[0024] A demister is installed on the upper part of the inner wall of the absorption tower 3. A packing layer and a spray pipe are installed on the inner wall of the absorption tower 3. A filter frame and a sealing cover are fixedly connected to the lower part of the inner wall of the absorption tower 3. A motor is fixedly connected to the inner bottom wall of the absorption tower 3. Sealed bearings are fixedly connected to the inner walls of the filter frame and the sealing cover. A scraper is fixedly connected to the inner edge of the sealed bearing. The end of the scraper contacts the surface of the filter frame. A water tank is fixedly connected to the lower surface of the absorption tower 3. A water pump is fixedly connected to the top of the water tank. The other end of the water pump is connected to the inner wall of the spray pipe. An air inlet pipe is fixedly connected to the lower surface of the absorption tower 3. An air outlet pipe is connected to the top of the absorption tower 3. A sewage discharge pipe is fixedly connected to the front end of the water tank. The bottom end of the water outlet pipe 21 is fixedly connected to the inner top wall of the water tank. The top of the fixing block 25 is fixedly connected to the inner top wall of the water tank.

[0025] The spray pipes are made of corrosion-resistant PTFE components, and the treatment liquid inside the water tank is an ionic liquid, achieving a VOCs removal rate of >95%.

[0026] Connect the air inlet pipe to the corresponding chemical emission device pipeline with a flange, connect the air outlet pipe to the exhaust fan flange, and connect the sewage pipe to the corresponding pipeline with a flange.

[0027] In this embodiment of the utility model, when exhaust gas needs to be treated, the exhaust fan, water pump, demister, and motor are automatically turned on by controlling the CNC screen. The exhaust fan draws the exhaust gas from the inside of the chemical emission device pipe and transports it to the absorption tower 3 through the air inlet pipe. The water pump draws the treatment liquid from the water tank and transports it to the spray pipe. The spray pipe sprays the treatment liquid onto the inside of the absorption tower 3 and the packing layer. The exhaust gas and the absorption liquid come into full contact in the packing layer, and the harmful components in the exhaust gas are dissolved by the absorption liquid. The purified exhaust gas continues to rise. When it passes through the demister, the liquid droplets carried in the exhaust gas are separated and returned to the circulating water tank. The treatment liquid under the spray flows into the sealing cover after being filtered by the filter frame. It is then guided into the water tank through the sealing cover for recycling. When the harmful components in the treatment liquid reach a certain concentration, the treatment liquid inside the water tank and the absorption tower 3 is discharged through the drain pipe. After the discharge is completed, the treatment liquid to be used is injected through the liquid inlet pipe at the top of the water tank.

[0028] The output shaft of the motor rotates, which drives the scraper to rotate, thereby scraping the impurities attached to the surface of the filter frame into the collection frame 1. During the scraping process, some of the treatment liquid will flow into the collection frame 1. The inclined plate 28 and the water guide ring 27 guide the treatment liquid flowing into the collection frame 1 to the area around the outlet pipe 21. After being filtered by the filter screen 22, the treatment liquid flows into the outlet pipe 21. The treatment liquid flowing in the outlet pipe 21 pushes the sealing plug 23 down, squeezing the spring 24, which opens the inside of the outlet pipe 21, allowing the treatment liquid to flow into the water tank.

[0029] like Figure 3 As shown, a sealing ring 29 is snapped onto the top of the collection frame 1. A ring of bolts 210 are threaded onto the inner wall of the sealing ring 29. The surface of the bolts 210 is threaded onto the inner wall of the collection frame 1. A shielding ring 216 is snapped onto the inner wall of the sealing ring 29. A slider 211 is slidably connected to the inner wall of the sealing ring 29. A sliding rod 212 is fixedly connected to the top of the slider 211. The inner wall of the shielding ring 216 is slidably connected to the surface of the sliding rod 212. A fixing rod 213 is fixedly connected to the top of the sealing ring 29. A locking rod 214 is slidably connected to the inner wall of the sliding rod 212. The surface of the locking rod 214 is snapped onto the inner wall of the fixing rod 213. An anti-detachment rope 215 is fixedly connected to one end of the locking rod 214. The other end of the anti-detachment rope 215 is fixedly connected to the top of the shielding ring 216.

[0030] In this embodiment of the utility model, when it is necessary to clean the inside of the collection frame 1, the absorption tower 3 stops the treatment of the exhaust gas, pull the clamp 214 away from the fixed rod 213 and the slide rod 212, pull the shielding ring 216 up to a suitable height, push the slide rod 212, so that the slider 211 moves in a circle within the sealing ring 29, and so that the shielding ring 216 moves in a circle. At this time, use an electric wrench to move the bolt 210 away from the inside of the collection frame 1, pull the sealing ring 29 up, and thus open the top of the collection frame 1, so that the impurities and filter screen 22 inside the collection frame 1 can be cleaned.

[0031] After cleaning, attach the sealing ring 29 into the collection frame 1. Use an electric wrench to thread the bolt 210 into the collection frame 1, so that the sealing ring 29 is fixed on the collection frame 1. Push the slide rod 212 to drive the slider 211 and the cover ring 216 to move in a circular motion to a suitable position. Push the cover ring 216 down to attach it into the sealing ring 29, so that the bottom end of the cover ring 216 abuts against the top end of the bolt 210.

[0032] like Figure 4 As shown, a waterproof gasket 26 is fixedly connected to the opposite end of the sealing plug 23 and the fixing block 25, and the surface of the spring 24 is located inside the waterproof gasket 26. The sealing ring 29, the shielding ring 216, the sealing plug 23 and the waterproof gasket 26 are all rubber components, and the spring 24 is a stainless steel component.

[0033] In use, the output shaft of the motor rotates, driving the scraper to rotate, thereby scraping the impurities attached to the surface of the filter frame into the collection frame 1. During the scraping process, some of the treatment liquid flows into the collection frame 1. The inclined plate 28 and the water guide ring 27 guide the treatment liquid flowing into the collection frame 1 to the area around the outlet pipe 21. After being filtered by the filter screen 22, the treatment liquid flows into the outlet pipe 21. The treatment liquid flowing in the outlet pipe 21 pushes the sealing plug 23 down, squeezing the spring 24, causing the inside of the outlet pipe 21 to open, thereby allowing the treatment liquid to flow into the water tank.

[0034] It should be noted that the components mentioned above, such as the collection frame 1, filter screen 22, bolt 210, absorption tower 3, demister, packing layer, spray pipe, filter frame, sealing cover, motor, sealed bearing, scraper, water tank, water pump, air inlet pipe, air outlet pipe, and sewage pipe, are all devices with relatively mature existing technologies. The specific models can be selected according to actual needs. At the same time, the demister, motor, and water pump can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A circulating spray exhaust gas absorption device suitable for aqueous systems, characterized in that, include: Absorption tower (3), with a material collection frame (1) fixedly connected to the lower end of the surface of the absorption tower (3); An overflow prevention mechanism (2) includes a water outlet pipe (21) fixedly connected to the bottom end of the collection frame (1). The inner bottom wall of the collection frame (1) is fixedly connected to a filter screen (22), a water guide ring (27), and an inclined plate (28). The surface of the filter screen (22) is conical. The bottom end of the water outlet pipe (21) is provided with a fixing block (25). The lower end of the inner wall of the water outlet pipe (21) is slidably connected to a sealing plug (23). The surface of the sealing plug (23) is slidably connected to the inner wall of the fixing block (25). The opposite ends of the sealing plug (23) and the fixing block (25) are fixedly connected to a spring (24).

2. The circulating spray exhaust gas absorption device suitable for aqueous systems according to claim 1, characterized in that: The top of the collection frame (1) is fitted with a sealing ring (29), and the inner wall of the sealing ring (29) is threaded with annularly distributed bolts (210), the surface of the bolts (210) being threaded to the inner wall of the collection frame (1).

3. The circulating spray exhaust gas absorption device suitable for aqueous systems according to claim 2, characterized in that: The inner wall of the sealing ring (29) is fitted with a shielding ring (216), and the inner wall of the sealing ring (29) is slidably connected with a slider (211). The top of the slider (211) is fixedly connected with a sliding rod (212).

4. The circulating spray exhaust gas absorption device suitable for aqueous systems according to claim 3, characterized in that: The inner wall of the shielding ring (216) is slidably connected to the surface of the slide rod (212), the top of the sealing ring (29) is fixedly connected to the fixing rod (213), the inner wall of the slide rod (212) is slidably connected to the locking rod (214), and the surface of the locking rod (214) is locked to the inner wall of the fixing rod (213).

5. The circulating spray exhaust gas absorption device suitable for aqueous systems according to claim 4, characterized in that: One end of the lever (214) is fixedly connected to an anti-detachment rope (215), and the other end of the anti-detachment rope (215) is fixedly connected to the top of the cover ring (216).

6. The circulating spray tail gas absorption device suitable for aqueous systems according to claim 1, characterized in that: The sealing plug (23) and the fixing block (25) are fixedly connected to a waterproof pad (26) at opposite ends, and the surface of the spring (24) is located inside the waterproof pad (26).

7. The circulating spray exhaust gas absorption device suitable for aqueous systems according to claim 1, characterized in that: The inner surface of the water guide ring (27) is fixedly connected to the surface of the absorption tower (3).

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