Wet desulfurization tower structure

Abstract

The utility model discloses a wet-type desulfurizing tower structure which comprises a tank body, an air inlet pipe is arranged on the side face of the bottom of the tank body, a circulating water pool is formed at the bottom of an inner cavity of the tank body, at least two stages of packing layers are arranged in the inner cavity of the tank body in the height direction, and a plurality of spraying main pipes penetrating through one side in the radial direction are installed on the side wall of the tank body. A right-angle rotating connector is installed at the inner end of the spraying main pipe, a driving base is installed at the downward movable end of the rotating connector and comprises a barrel, a spiral impeller is fixedly installed in the barrel, a water inlet connecting pipe is arranged at the upper end of the barrel, at least two water outlet connecting pipes communicated with an inner cavity are arranged on the side face of the bottom of the barrel, and branch pipes are correspondingly installed on the water outlet connecting pipes. And the branch pipe is provided with a plurality of downward spray heads. The spraying branch pipes can rotate automatically during water spraying, so that the whole section can be covered by adopting fewer branch pipes, and the sprayed atomized desulfurizing agent has transverse movement, so that the collision contact with waste gas is increased, and the adsorption effect on sulfur dioxide is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a wet desulfurization tower structure. Background Art

[0002] Sulfur dioxide in the flue gas of coal-fired boilers is one of the main sources of air pollution, and the ammonia desulfurization process is one of the main methods used for desulfurization of flue gas from coal-fired boilers. Wet desulfurization uses limestone slurry, ammonia water and other absorbents to spray and wash the flue gas in the desulfurization tower. During this process, the SO2 in the flue gas is absorbed by the absorbent to achieve the purpose of removing SO2. The desulfurization tower is the core device of the wet desulfurization process. Generally, the empty tower spray process is adopted. The desulfurization tower is composed of multiple layers of spray layers. In the prior art, the spray layer includes a main pipe and a branch pipe. The lateral branches of the main pipe are arranged symmetrically, and the nozzles are arranged therein. In order to ensure that the desulfurizer (alkaline solution, water, etc.) is in full contact with the exhaust gas, the layout design of the main pipe and the branch pipe in the spray layer is relatively dense (for example, the patent with publication number CN219596969U, attached Figure 1 The disclosed spray pipe structure) not only increases the manufacturing cost, but also increases the resistance to the exhaust gas flow. Utility Model Content

[0003] The purpose of the utility model is to provide a wet desulfurization tower structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wet desulfurization tower structure, including a tank body, an air inlet pipe is provided on the bottom side of the tank body, an air outlet is provided on the top of the tank body, a circulating water pool is formed at the bottom of the inner cavity of the tank body, the inner cavity of the tank body is provided with at least two levels of packing layers along the height direction, and the side wall of the tank body is provided with a plurality of radially single-sided penetrating spray mother pipes, the spray mother pipes are located one by one above the corresponding packing layers, the spray mother pipes are input by pumping water from the circulating water pool by a water pump a, a right-angled rotary joint is installed at the inner end of the spray mother pipe, a driving seat is installed at the downward movable end of the rotary joint, the driving seat includes a cylinder, a spiral impeller is fixedly installed inside the cylinder, a water inlet pipe is provided at the upper end of the cylinder, and at least two water outlet pipes connected to the inner cavity are provided on the bottom side of the cylinder, and the water outlet pipes are correspondingly installed with branch pipes, and the branch pipes are provided with a plurality of downward nozzles.

[0005] Preferably, the tank body is provided with an observation port at a position corresponding to each level of the filling layer.

[0006] Preferably, a slurry pool is also included, and the slurry pool is used to prepare lime slurry. The slurry pool is connected to the circulating water pool through a water pump b.

[0007] Preferably, a cyclone separator is also included, the input end of the cyclone separator draws liquid from the bottom of the circulating water pool through a water pump c, and the output end of the cyclone separator is connected to the circulating water pool through a pipeline.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the desulfurization tower absorbs sulfur dioxide in flue gas by spraying, and the branch pipe of the spray can rotate when spraying water, so fewer spray main pipes and branch pipes can cover the entire cross section of the tank, which is conducive to reducing manufacturing costs and reducing the resistance of exhaust gas circulation. In addition, the sprayed atomized desulfurizer has lateral movement in the tank, which increases the collision and contact between the atomized desulfurizer and the exhaust gas, thereby enhancing the adsorption effect of sulfur dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a cross-sectional schematic diagram of the drive seat.

[0011] In the figure: 1. tank body; 2. air inlet pipe; 3. air outlet; 4. observation port; 5. packing layer; 6. water pump a; 7. water pump c; 8. cyclone separator; 9. drive seat; 91. cylinder body; 92. spiral impeller; 93. water outlet pipe; 94. water inlet pipe; 10. branch pipe; 11. spray main pipe; 12. slurry pool; 13. water pump b; 14. circulating water pool. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0013] See also Figure 1-2 The utility model provides a technical solution: a wet desulfurization tower structure, including a tank body 1, an air inlet pipe 2 is provided on the bottom side of the tank body 1, an air outlet 3 is provided on the top of the tank body 1, a circulating water pool 14 is formed at the bottom of the inner cavity of the tank body 1, and the inner cavity of the tank body 1 is provided with at least two levels of packing layers 5 along the height direction. The side wall of the tank body 1 is installed with a plurality of radially single-sided penetrating spray mother pipes 11, and the spray mother pipes 11 are located one by one above the corresponding packing layer 5. The packing layer 5 adopts acid-corrosion-resistant ceramic filler, with the contact area of ​​gas and water, and the tank body 1 is provided with an observation port 4 at the position corresponding to each level of the packing layer 5.

[0014] The spray main pipe 11 is supplied with water from the circulating water pool 14 by a water pump a6. A right-angle rotary joint (the rotary joint is an existing mature product) is installed at the inner end of the spray main pipe 11. A driving seat 9 is installed at the downward movable end of the rotary joint. The driving seat 9 includes a cylinder 91. A spiral impeller 92 is fixedly installed inside the cylinder 91. A water inlet pipe 94 is provided at the upper end of the cylinder 91. At least two water outlet pipes 93 connected to the inner cavity are provided on the bottom side of the cylinder 91. The water outlet pipe 93 is correspondingly installed with a branch pipe 10. The branch pipe 10 is equipped with multiple downward nozzles. The water flow can drive the spiral impeller 92 and the cylinder 91 to rotate, and then when spraying, the branch pipe 10 and the nozzle rotate accordingly to cover the entire cross-section in the tank body 1, which is beneficial to reduce the number of branch pipes 10 and nozzles. In addition, the sprayed desulfurizer has lateral movement, which increases the collision contact with the exhaust gas.

[0015] It also includes a slurry pool 12 and a cyclone separator 8. The slurry pool 12 is used to prepare lime slurry. The slurry pool 12 is connected to a circulating water pool 14 through a water pump b13. It also includes that the input end of the cyclone separator 8 draws liquid from the bottom of the circulating water pool 14 through a water pump c7, and the output end of the cyclone separator 8 is connected to the circulating water pool 14 through a pipeline. CaSO4 precipitation will be generated during the desulfurization process. The cyclone separator 8 is used to separate the precipitate from the bottom circulating water. The cyclone separator 8 uses the principle of centrifugal sedimentation.

[0016] 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 wet desulfurization tower structure, comprising a tank body (1), an air inlet pipe (2) is provided on the bottom side of the tank body (1), an air outlet (3) is provided on the top of the tank body (1), and a circulating water pool (14) is formed at the bottom of the inner cavity of the tank body (1), characterized in that: The inner cavity of the tank body (1) is provided with at least two levels of packing layers (5) in the height direction. The side wall of the tank body (1) is provided with a plurality of radially unilaterally penetrating spray main pipes (11). The spray main pipes (11) are located one by one above the corresponding packing layers (5). The spray main pipes (11) are supplied with water by pumping water from a circulating water pool (14) by a water pump a (6). A right-angle rotating joint is provided at the inner end of the spray main pipe (11). A driving seat (9) is provided at the movable end of the rotating joint facing downward. The driving seat (9) comprises a cylinder (91). A spiral impeller (92) is fixedly installed inside the cylinder (91). A water inlet pipe (94) is provided at the upper end of the cylinder (91). At least two water outlet pipes (93) communicating with the inner cavity are provided at the bottom side of the cylinder (91). Branch pipes (10) are correspondingly installed on the water outlet pipes (93). The branch pipes (10) are provided with a plurality of downward spray heads.

2. A wet desulfurization tower structure according to claim 1, characterized in that: The tank body (1) is provided with an observation port (4) at a position corresponding to each level of the filling layer (5).

3. A wet desulfurization tower structure according to claim 2, characterized in that: The utility model also comprises a slurry tank (12), which is used for preparing lime slurry. The slurry tank (12) is connected to a circulating water tank (14) via a water pump b (13).

4. A wet desulfurization tower structure according to claim 3, characterized in that: It also includes a cyclone separator (8), the input end of which draws liquid from the bottom of a circulating water pool (14) through a water pump c (7), and the output end of the cyclone separator (8) is connected to the circulating water pool (14) through a pipeline.

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