Efficient desulfurization device for boiler flue gas

Abstract

The utility model belongs to the technical field of boiler flue gas treatment, and particularly relates to an efficient desulfurization device for boiler flue gas, which comprises an absorption tower and a feeding device connected with the absorption tower, the disturbance device comprises a disturbance pipeline arranged at the bottom of the absorption tower and a blower device arranged outside the absorption tower and communicated with the disturbance pipeline; a disturbance device is arranged at the bottom of the absorption tower and comprises a disturbance pipeline arranged at the bottom of the absorption tower and a blower device arranged outside the absorption tower and communicated with the disturbance pipeline, and the blower device blows air and blows air out of the disturbance pipeline to disturb slurry at the bottom of the absorption tower, so that the slurry is more uniform, and the slurry is prevented from precipitating and scaling.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler flue gas treatment, and in particular relates to a boiler flue gas high-efficiency desulfurization device. Background Art

[0002] The importance of boiler flue gas high-efficiency desulfurization technology in my country's environmental protection field. With the rapid development of my country's economy, energy demand continues to increase. Thermal power generation is the main energy source, and the boiler flue gas it produces is increasingly polluting the environment. Among them, SO2 emissions are one of the main causes of environmental problems such as acid rain and air pollution. In order to reduce the pollution of flue gas to the environment, the Chinese government attaches great importance to boiler flue gas desulfurization and vigorously promotes high-efficiency desulfurization technology.

[0003] At present, the boiler flue gas mainly absorbs SO2 through the absorption tower, but the slurry at the bottom of the absorption tower has few disturbance structures, many unreached disturbance areas, many dead corners, and a small disturbance area, which leads to uneven slurry stirring and easy precipitation and scaling. This leads to low slurry fluidity and absorption, and high raw material consumption. Utility Model Content

[0004] The utility model discloses a boiler flue gas high-efficiency desulfurization device, which mainly solves the problem of poor disturbance effect of slurry at the bottom of the current absorption tower.

[0005] To achieve the above object, the utility model provides a boiler flue gas high-efficiency desulfurization device, comprising an absorption tower and a feeding device connected to the absorption tower. A disturbance device is provided at the bottom of the absorption tower, and the disturbance device comprises a disturbance pipeline arranged at the bottom of the absorption tower and a blowing device arranged outside the absorption tower and connected to the disturbance pipeline.

[0006] Preferably, the disturbance pipeline includes a plurality of nozzles evenly spaced and connected to each other at the bottom of the absorption tower.

[0007] Preferably, a spray pipe connected to the feeding device is provided in the absorption tower, and the spray pipe is provided with multiple layers.

[0008] Preferably, the spray pipe is provided with a plurality of spray heads with adjustable angles.

[0009] Preferably, the number of the nozzles is 180-185.

[0010] Preferably, a flue gas pipe for flue gas to enter is provided on one side of the absorption tower.

[0011] Preferably, a water spray device is provided at the top of the absorption tower, and the water spray device comprises a water spray pipe provided at the top of the absorption tower, and a plurality of spray holes are provided on the water spray pipe.

[0012] Preferably, the water spray pipe is arranged obliquely in the absorption tower.

[0013] Preferably, the feeding device is used to provide magnesium hydroxide slurry.

[0014] The technical solution provided by the utility model has at least the following technical effects:

[0015] The flue gas high-efficiency desulfurization device disclosed in the present application is provided with a disturbance device at the bottom of the absorption tower. The disturbance device includes a disturbance pipeline arranged at the bottom of the absorption tower, and a blowing device arranged outside the absorption tower and connected to the disturbance pipeline. The slurry at the bottom of the absorption tower is disturbed by blowing air through the blowing device and exhausting air through the disturbance pipeline, so that the slurry is more uniform and the slurry precipitation and scaling are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural diagram of a boiler flue gas high-efficiency desulfurization device according to an embodiment of the utility model.

[0018] Explanation of main figure marks: 1. Absorption tower; 2. Feeding device; 3. Blowing device; 4. Disturbance pipeline; 5. Spray pipe; 6. Flue gas pipe; 7. Water spray pipe. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0022] As an embodiment of the utility model

[0023] Reference Figure 1 This embodiment discloses a boiler flue gas high-efficiency desulfurization device, which is mainly composed of two parts: an absorption tower 1 and a feeding device 2. A flue gas pipe 6 for flue gas to enter is arranged on one side of the absorption tower 1. The flue gas enters the absorption tower 1 through the flue gas pipe 6, and a precooler is also arranged in the flue gas pipe 6 to preliminarily cool the flue gas.

[0024] The absorption tower 1 is the core part of the desulfurization process and is responsible for the absorption of sulfur dioxide; while the feeding device 2 is responsible for accurately conveying the magnesium hydroxide slurry into the absorption tower 1 to ensure that the sulfur dioxide in the flue gas is effectively treated.

[0025] At the bottom of the absorption tower 1, a disturbance device is provided, which consists of two parts: a disturbance pipeline 4 and a blower 3 connected thereto. The blower 3 is mainly composed of a blower. In this embodiment, the disturbance pipeline 4 is divided into two layers, upper and lower, and is composed of a series of nozzles evenly spaced at the bottom of the absorption tower 1. These nozzles are in opposite directions, and a dynamic balance is formed between the upper and lower layers, making the disturbance more uniform.

[0026] The blower distributes the wind through the nozzle holes of the nozzle to disturb the slurry at the bottom of the absorption tower 1. This design allows the nozzles to be evenly spaced to achieve disturbance coverage of the entire area. At the same time, the nozzles on the upper and lower layers are in opposite directions, which enhances the uniformity of the disturbance and improves the desulfurization effect.

[0027] The absorption tower 1 is provided with a spray pipe 5 connected to the feeding device 2, and the spray pipe 5 is provided with multiple layers. The spray pipe 5 is provided with a plurality of nozzles with adjustable angles, and the number of nozzles is 183. The angle of the nozzle can be adjusted according to actual needs to achieve spraying without dead angles. The magnesium hydroxide slurry is transported to the spray pipe 5 through a pipeline for spraying, so that the magnesium hydroxide slurry is fully mixed with the flue gas, the spray coverage area is expanded, the fluidity of the slurry is improved, and the absorption of SO2 by the Mg(OH)2 slurry is promoted.

[0028] A water spray device is provided on the top of the absorption tower 1, and the water spray device includes a water spray pipe 7 provided on the top of the absorption tower 1, and a plurality of spray holes are provided on the water spray pipe 7. The water spray pipe 7 is tilted and arranged in the absorption tower 1. The specific tilt angle is set according to actual needs, and industrial water is sprayed out through the water spray pipe 7 through the pipeline. The tilted water spray pipe 7 allows the water spraying area to cover a wider area.

[0029] The boiler flue gas high-efficiency desulfurization device disclosed in this embodiment solves the problem of insufficient mixing of flue gas and slurry, promotes the reaction of slurry and flue gas, improves desulfurization efficiency, and reduces the scaling, blockage and corrosion problems of desulfurization equipment. It reduces the waste of reagents, reduces the use of Mg(OH)2, stabilizes the SO2 index, and avoids environmental accidents. It ensures the safe and stable operation of the desulfurization system and greatly reduces the workload and work intensity of maintenance personnel.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boiler flue gas high-efficiency desulfurization device, comprising an absorption tower (1) and a feeding device (2) connected to the absorption tower (1), characterized in that: A disturbance device is arranged at the bottom of the absorption tower (1), and the disturbance device comprises a disturbance pipeline (4) arranged at the bottom of the absorption tower (1), and a blast device (3) arranged outside the absorption tower (1) and connected to the disturbance pipeline (4); the disturbance pipeline (4) comprises a plurality of nozzles arranged at even intervals at the bottom of the absorption tower (1) and connected to each other.

2. The boiler flue gas high-efficiency desulfurization device according to claim 1 is characterized in that: The absorption tower (1) is provided with a spray pipe (5) connected to the feeding device (2), and the spray pipe (5) is provided with multiple layers.

3. The boiler flue gas high efficiency desulfurization device according to claim 2 is characterized in that: The spray pipe (5) is provided with a plurality of spray heads with adjustable angles.

4. The boiler flue gas high efficiency desulfurization device according to claim 3 is characterized in that: The number of the nozzles is 180-185.

5. The boiler flue gas high efficiency desulfurization device according to claim 1, characterized in that: A flue gas pipe (6) for flue gas to enter is arranged on one side of the absorption tower (1).

6. The boiler flue gas high efficiency desulfurization device according to claim 1, characterized in that: A water spray device is arranged at the top of the absorption tower (1), and the water spray device comprises a water spray pipe (7) arranged at the top of the absorption tower (1), and a plurality of spray holes are arranged on the water spray pipe (7).

7. The boiler flue gas high-efficiency desulfurization device according to claim 6, characterized in that: The water spray pipe (7) is arranged obliquely inside the absorption tower (1).

8. The boiler flue gas high efficiency desulfurization device according to claim 1, characterized in that: The feeding device (2) is used to provide magnesium hydroxide slurry.

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