Tower wall anti-blocking device for spray reaction tower

Abstract

The utility model relates to the field of waste incineration flue gas purification, in particular to a tower wall anti-blocking device for a spray reaction tower, which comprises a plurality of anti-blocking devices and the spray reaction tower, the anti-blocking devices are arranged on the inner wall of the spray reaction tower, and each anti-blocking device comprises a scraper, a telescopic rod, a coupler and a motor, the scraper is arranged on the inner wall of the spray reaction tower, the top of the scraper is connected with a telescopic rod, the top of the telescopic rod is transversely connected with a coupler, and the coupler is connected with a motor outside the spray reaction tower. According to the anti-caking device, accumulated dust on the wall of the reaction tower is removed in the normal operation process of a boiler unit, so that the loss caused by boiler shutdown is reduced, and the production efficiency is improved; the device is mechanically driven, can be manually and remotely operated through a DCS (Distributed Control System), is also interlocked with the differential pressure of the reaction tower, is intelligently operated, does not need to be manually cleaned, and is more convenient and simpler.

Description

[Technical field]

[0001] The utility model relates to the field of waste incineration flue gas purification, and more specifically, to a tower wall anti-caking device for a spray reaction tower. [Background technology]

[0002] Domestic waste incineration power plants need to purify and remove various pollutants in flue gas before they meet emission standards. At present, the mainstream flue gas deacidification treatment method is the rotary spray semi-dry technology, which mainly uses a high-speed rotating centrifugal atomizer to spray the deacidification agent into the deacidification reaction tower, and fully mixes, contacts and reacts with the flue gas entering the reaction tower in a swirling flow to achieve the maximum removal efficiency.

[0003] In the rotary spray semi-dry process, desulfurization uses a spray reaction tower. The lime slurry is instantly atomized in the high-speed rotating atomizer, and reacts with the flue gas to neutralize and remove the acidic components in the flue gas. Due to the small amount of flue gas or the excessive amount of slurry sprayed, or the uneven distribution of flue gas, the slurry sprayed from the rotary atomizer will more or less have some incompletely dried droplets collide with the wall of the spray reaction tower. Over time, it will stick to the wall and agglomerate, and the accumulation will become thicker and thicker. The thickness of the agglomeration can reach 1m, causing the pressure drop of the reaction tower to increase, and the bottom of the tower to be blocked by ash. In severe cases, it will cause the furnace to shut down and affect the normal operation of the system. At present, there is no good solution for the ash accumulation and agglomeration on the wall of the spray reaction tower, and it can only be cleaned manually. It is not only time-consuming and labor-intensive, but also affects the operation and brings economic losses, and may also damage the health of the cleaners. [Contents of the utility model]

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a tower wall anti-caking device for a spray reaction tower, which can conveniently remove dust accumulated on the tower wall of the reaction tower.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tower wall anti-caking device for a spray reaction tower, comprising a plurality of anti-caking devices and a spray reaction tower, wherein the anti-caking device is arranged on the inner wall of the spray reaction tower, the anti-caking device comprises a scraper, a telescopic rod, a coupling, and a motor, the scraper is arranged on the inner wall of the spray reaction tower, the top of the scraper is connected to the telescopic rod, the top of the telescopic rod is laterally connected to the coupling, and the coupling is connected to the motor outside the spray reaction tower.

[0006] Preferably, the spray reaction tower comprises an atomizer, an ash outlet, and a reaction cavity. The top of the spray reaction tower is provided with an atomizer, the bottom of the atomizer is provided with a reaction cavity, and the bottom of the reaction cavity is provided with an ash outlet.

[0007] Preferably, the anti-caking device is arranged at a position 0.5 to 1.0 m below the atomizer, and a plurality of anti-caking devices are closely attached to the inner wall of the spray reaction tower.

[0008] Preferably, the scraper is in an arc-shaped, sheet-like structure, thick at the top and thin at the bottom, and the motor controls the scraper to move up and down through a coupling and a telescopic rod.

[0009] Preferably, a slot is provided below the scraper, and the slot is fixed on the inner wall of the spray reaction tower.

[0010] Preferably, a maintenance platform is provided outside the spray reaction tower.

[0011] Preferably, the spray reaction tower is provided with a wear-resistant plate or a thickened tower wall at the location where the anti-caking device is provided.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model discloses a tower wall anti-caking device for a spray reaction tower. By setting the anti-caking device, the ash accumulation on the tower wall of the reaction tower can be removed during the normal operation of the boiler unit, thereby reducing the loss caused by shutdown and improving production efficiency.

[0014] 2. The utility model discloses a tower wall anti-caking device for a spray reaction tower, which is driven mechanically and can be remotely operated manually through a DCS system. It is also interlocked with the differential pressure of the reaction tower, and is intelligently operated, does not require manual cleaning, and is more convenient and concise.

Brief Description of the Drawings

[0015] Figure 1 This is a schematic diagram of the structure of a tower wall anti-caking device for a spray reaction tower of the utility model;

[0016] Figure 2 This is a schematic diagram of the top view of the structure of a tower wall anti-caking device for a spray reaction tower of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of an anti-caking device for a tower wall of a spray reaction tower of the utility model;

[0018] Figure 4 It is a schematic diagram of the top view of the structure of an anti-caking device for a tower wall of a spray reaction tower of the utility model;

[0019] In the figure: 1-scraper, 2-telescopic rod, 3-coupling, 4-motor, 5-maintenance platform, 6-card slot, 7-anti-caking device, 8-spray reaction tower, 9-atomizer, 10-ash outlet, 11-reaction cavity. [Specific implementation method]

[0020] 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.

[0021] See also Figure 1 , 2 In an embodiment of the utility model, a tower wall anti-caking device for a spray reaction tower comprises a plurality of anti-caking devices 7 and a spray reaction tower 8. The spray reaction tower 8 comprises an atomizer 9, an ash outlet 10 and a reaction cavity 11. An atomizer 9 is provided at the top of the spray reaction tower 8, a reaction cavity 11 is provided below the atomizer 9, and an ash outlet 10 is provided at the bottom of the reaction cavity 11. The anti-caking device 7 is arranged at a position of 0.5 to 1.0 m below the atomizer 9, and a plurality of anti-caking devices 7 are closely attached to the inner wall of the spray reaction tower 8. The spray reaction tower 8 is provided with a wear-resistant plate or a thickened tower wall at the location where the anti-caking device 7 is arranged.

[0022] See also Figure 3 , 4 In the embodiment of the utility model, a tower wall anti-caking device for a spray reaction tower is provided. The anti-caking device 7 comprises a scraper 1, a telescopic rod 2, a coupling 3 and a motor 4. The scraper 1 is arranged on the inner wall of the spray reaction tower 8. The scraper 1 is in an arc-shaped, sheet-like structure, thick on the top and thin on the bottom. The motor 4 controls the scraper 1 to move up and down through the coupling 3 and the telescopic rod 2. The movement stroke is 1 to 2 m and can be adjusted. It can cover the area with the most serious dust accumulation. The removed dust blocks fall into the ash outlet 10 below. The scraper 1 can set the movement speed and frequency. A card slot 6 is provided below the scraper 1. The scraper 1 is stored in the card slot 6 after stopping operation. The card slot 6 is fixed on the inner wall of the spray reaction tower 8. The top of the scraper 1 is connected to the telescopic rod 2. The top of the telescopic rod 2 is horizontally connected to the coupling 3. The coupling 3 is connected to the motor 4 outside the spray reaction tower 8. An inspection platform 5 is provided outside the spray reaction tower 8. The inspection platform 5 is convenient for checking and repairing the motor 4.

[0023] Working principle:

[0024] The utility model discloses a tower wall anti-caking device for a spray reaction tower. When the atomizing reaction tower 8 starts to be used, the high-speed rotating atomizer 9 atomizes the lime slurry, and neutralizes it with the flue gas in the reaction cavity 11 to remove the acidic components in the flue gas. A small number of droplets of the slurry sprayed from the atomizer 9 that are not completely dried will hit the inner wall of the spray reaction tower 8. At this time, the anti-caking device 7 drives the motor 4 to drive the coupling 3 and the telescopic rod 2 to drive the scraper 1 connected to the inner wall of the spray reaction tower 8 to move up and down through mechanical drive or manual remote operation of a DCS system. The ash blocks accumulated on the tower wall can be removed by the downward movement of the scraper 1. The scraped ash blocks fall out of the device through an ash outlet 10, thereby ensuring the stable operation of the device. When the scraper 1 is not in use, it can be stored in a card slot 6, and the motor 4 can be inspected and maintained through an inspection platform 5.

[0025] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A tower wall anti-caking device for a spray reaction tower, characterized in that: The invention comprises a plurality of anti-caking devices (7) and a spray reaction tower (8), wherein the anti-caking device (7) is arranged on the inner wall of the spray reaction tower (8), the anti-caking device (7) comprises a scraper (1), a telescopic rod (2), a coupling (3), and a motor (4), wherein the scraper (1) is arranged on the inner wall of the spray reaction tower (8), the top of the scraper (1) is connected to the telescopic rod (2), the top of the telescopic rod (2) is laterally connected to the coupling (3), and the coupling (3) is connected to the motor (4) outside the spray reaction tower (8).

2. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: The spray reaction tower (8) comprises an atomizer (9), an ash outlet (10), and a reaction cavity (11); an atomizer (9) is arranged at the top of the spray reaction tower (8); a reaction cavity (11) is arranged below the atomizer (9); and an ash outlet (10) is arranged at the bottom of the reaction cavity (11).

3. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: The anti-caking device (7) is arranged at a position 0.5 to 1.0 m below the atomizer (9), and a plurality of anti-caking devices (7) are closely attached to the inner wall of the spray reaction tower (8) around one circumference.

4. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: The scraper (1) is in an arc-shaped, sheet-like structure, thick at the top and thin at the bottom. The motor (4) controls the scraper (1) to move up and down through a coupling (3) and a telescopic rod (2).

5. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: A slot (6) is provided below the scraper (1), and the slot (6) is fixed on the inner wall of the spray reaction tower (8).

6. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: A maintenance platform (5) is provided outside the spray reaction tower (8).

7. The tower wall anti-caking device for a spray reaction tower according to claim 1, characterized in that: The spray reaction tower (8) is provided with a wear-resistant plate or a thickened tower wall at the location where the anti-caking device (7) is provided.

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