A spray tower for purifying flue gas

Abstract

The utility model provides a kind of spray tower of flue gas purification, it solves the technical problem that current spray device only carries out physical purification to flue gas, harmful chemical substances in flue gas still can be discharged into atmosphere, cause secondary pollution, can be widely applied in spray tower field;Specifically including tower body, tower body is divided into lower cylinder and upper conical body, cylinder is divided into lower, middle, upper three layers again, lower cylinder is equipped with flue inlet on, bottom is equipped with drain, conical body top is equipped with flue outlet, lower cylinder and middle cylinder are fixedly connected with tray between, tray is scattered and placed with bower ring;Middle cylinder and upper cylinder are provided with spray mechanism between, and spray mechanism includes adapter pipe, multiple spray branch pipes are connected with circumferential array on adapter pipe, multiple spray heads are connected on each spray branch pipe;Upper cylinder and conical body are provided with guide vane between, and guide vane is composed of multiple mutually parallel arranged inclined plates.

Description

Technical Field

[0001] This utility model belongs to the field of spray tower technology, and specifically relates to a spray tower for purifying flue gas. Background Technology

[0002] Spray towers are a new type of purification device characterized by their small size and low energy consumption. They are widely used in the treatment and recovery of industrial waste gases and semi-pollutants in industries such as chemical, petroleum, and light industry. This product can be used continuously in various working environments without causing secondary pollution.

[0003] Utility model patent CN221015169U discloses a flue gas spray purification device, including a spray purification box and a purified water tank. A water pipe is fixedly connected to the upper part of the inside of the spray purification box, and several spray heads are fixedly connected to the bottom end of the water pipe. A flue gas spray chamber is opened inside the spray purification box, and a sedimentation tank is set at the bottom end of the flue gas spray chamber. A baffle is fixedly connected to the upper side of one side of the sedimentation tank, and a return pipe is set above the baffle. A purified water tank is set on one side of the spray purification box, and a filter sand box is inserted into the upper side of the inner side of the purified water tank.

[0004] The aforementioned spraying device only physically purifies the flue gas; harmful chemicals in the flue gas will still be released into the atmosphere, causing secondary pollution. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned technology and provide a spray tower for purifying flue gas.

[0006] Therefore, this utility model provides a spray tower for purifying flue gas, including a tower body, which is divided into a lower cylindrical body and an upper conical body. The cylindrical body is further divided into three layers: lower, middle and upper. The lower cylindrical body has a smoke inlet and a drain outlet at the bottom. The top of the conical body has a smoke outlet. A tray is fixedly connected between the lower cylindrical body and the middle cylindrical body, and Pall rings are scattered in the tray.

[0007] A spraying mechanism is provided between the middle cylindrical body and the upper cylindrical body. The spraying mechanism includes a transfer pipe, on which multiple spraying branch pipes are connected in a circumferential array, and multiple spraying nozzles are connected to each spraying branch pipe.

[0008] A guide plate is provided between the upper cylindrical body and the cone body. The guide plate is composed of multiple inclined plates arranged in parallel to each other.

[0009] Furthermore, it also includes a water tank containing an alkaline solution to neutralize nitrogen oxides and sulfides in the flue gas; the water tank is connected to a water pipe via a water pump, and the water pipe is connected to a transfer pipe to supply water to the spraying mechanism.

[0010] Furthermore, the spraying mechanism is also equipped with water passage holes, and the tray is a screen, which is used to allow the liquid to fall onto the lower cylindrical body.

[0011] Furthermore, inspection holes are provided on all three cylindrical and conical sections, and each inspection hole is equipped with a cover made of glass for observing the interior of the tower.

[0012] This utility model provides a spray tower for purifying flue gas, which has the following beneficial effects:

[0013] This invention features a three-stage purification structure that treats harmful components in flue gas in layers, ensuring that the final emitted flue gas meets emission standards. By incorporating Pall rings, the structure of the Pall rings increases the contact area with the flue gas, allowing solid dust in the flue gas to be adsorbed inside the Pall rings. Furthermore, by using a spray nozzle, the spray area of ​​the spray solution is increased, maximizing coverage of the radial area within the cylindrical body, ensuring a thorough reaction between the spray solution and the flue gas. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 This is a diagram of the internal structure of this utility model;

[0016] Figure 3 This is a structural diagram of the spraying mechanism of this utility model;

[0017] Figure 4 This is a structural diagram of the guide plate of this utility model;

[0018] The markings in the diagram are: 1. Tower body; 2. Smoke inlet; 3. Inspection hole; 4. Tray; 5. Spraying mechanism; 6. Guide plate; 7. Smoke outlet; 8. Water tank; 9. Water pump; 10. Water pipe; 11. Transfer pipe; 12. Spraying branch pipe; 13. Spray head; 14. Water passage hole; 15. Drain outlet. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0020] like Figure 1 As shown, this utility model provides a spray tower for purifying flue gas, including a tower body 1. The tower body 1 is divided into a lower cylindrical body and an upper conical body. The cylindrical body is further divided into three layers: lower, middle, and upper. Inspection holes 3 are provided on all three layers of the cylindrical body and the conical body. A smoke inlet 2 is provided on the lower cylindrical body, and a drain outlet 15 is provided at the bottom. A smoke outlet 7 is provided at the top of the conical body.

[0021] like Figure 2 As shown, a tray 4 is fixedly connected between the lower cylindrical body and the middle cylindrical body, and a large number of Pall rings are scattered in the tray 4; the structure of the Pall rings can increase the contact area of ​​flue gas, so that solid dust in the flue gas can be adsorbed inside the Pall rings.

[0022] like Figure 3 As shown, a spraying mechanism 5 is provided between the middle cylindrical body and the upper cylindrical body. The spraying mechanism 5 includes a transfer pipe 11, on which multiple spraying branch pipes 12 are connected in a circumferential array. Each spraying branch pipe 12 is connected to multiple nozzles 13. The nozzles 13 are spray nozzles, which increase the spraying area of ​​the spray solution and cover the radial area inside the cylindrical body as much as possible, so that the spray solution reacts fully with the flue gas.

[0023] like Figure 4 As shown, a guide plate 6 is provided between the upper cylindrical body and the cone body. The guide plate 6 is composed of multiple inclined plates arranged in parallel to each other. It can prolong the time for the flue gas to pass through the guide plate 6 and cool the flue gas. The moisture in the flue gas condenses into water droplets on the inclined plates, thereby reducing the moisture content in the flue gas, reducing the number of wet particulate matter formed, and improving the emission standards of the flue gas.

[0024] It also includes a water tank 8, which contains an alkaline solution to neutralize nitrogen oxides and sulfides in the flue gas. The water tank 8 is connected to a water pipe 10 via a water pump 9, and the water pipe 10 is connected to a transfer pipe 11 to supply water to the spraying mechanism 5. The spraying mechanism 5 is also equipped with a water passage hole 14, and the tray 4 serves as a screen, allowing the spray solution and condensate droplets to fall into the lower cylindrical body and be discharged through the drain outlet 15. Each inspection hole 3 is equipped with a cover, which can be made of glass, allowing observation of the interior of the tower body 1 and timely replacement or repair of the equipment inside.

[0025] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A spray tower for purifying flue gas, comprising a tower body, the tower body being divided into a lower cylindrical body and an upper conical body, the cylindrical body being further divided into lower, middle, and upper layers, the lower cylindrical body having a flue gas inlet and a drain outlet at the bottom, and the top of the conical body having a flue gas outlet, characterized in that, A tray is fixedly connected between the lower cylindrical body and the middle cylindrical body, and a Pall ring is placed in the tray; A spraying mechanism is provided between the middle cylindrical body and the upper cylindrical body. The spraying mechanism includes a transfer pipe, on which multiple spraying branch pipes are connected in a circumferential array, and multiple spraying nozzles are connected to each spraying branch pipe. A guide plate is provided between the upper cylindrical body and the cone body. The guide plate is composed of multiple inclined plates arranged in parallel to each other.

2. The spray tower for purifying flue gas according to claim 1, characterized in that, It also includes a water tank containing an alkaline solution to neutralize nitrogen oxides and sulfides in the flue gas; the water tank is connected to a water pipe via a water pump, and the water pipe is connected to a transfer pipe to supply water to the spraying mechanism.

3. The spray tower for purifying flue gas according to claim 1 or 2, characterized in that, The spraying mechanism is also equipped with water passage holes, and the tray is a screen to allow the liquid to fall onto the lower cylindrical body.

4. The spray tower for purifying flue gas according to claim 3, characterized in that, Inspection holes are provided on all three cylindrical and conical sections, and each inspection hole is equipped with a cover made of glass for observing the interior of the tower.

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