Flue gas desulfurization device

Abstract

The utility model discloses a flue gas desulfurization device. The flue gas desulfurization device comprises a box body, a first pipeline and a second pipeline, the box body has an accommodating cavity; the first pipeline is connected with the box body, and the first pipeline communicates with the accommodating cavity; the second pipeline is located on the side portion of the first pipeline and provided with a water outlet, and the water outlet is communicated with the first pipeline. According to the embodiment of the invention, the second pipeline is arranged at the side part of the first pipeline, so that the second pipeline can introduce the liquid for flushing into the first pipeline to clean the interior of the first pipeline or dredge the first pipeline, so that the accumulation of impurities on the inner wall of the first pipeline is reduced, and the risk that the first pipeline is blocked is reduced.

Description

Technical Field

[0001] This application relates to the field of flue gas desulfurization technology, and in particular to a flue gas desulfurization device. Background Technology

[0002] Flue gas emitted from chemical plants, steel mills, pharmaceutical factories, coking plants, and oil refineries contains a significant amount of sulfur-containing gases. Flue gas desulfurization (FGD) devices are commonly used to reduce sulfur dioxide emissions, thus protecting the environment and ecosystems. FGD devices work by feeding a large amount of limestone powder into a slurry tank, where it dissolves in water to form a slurry. Flue gas is then passed through the slurry, where the sulfur-containing gases react chemically with suspended particles in the slurry and are removed. As limestone powder is continuously added, a large amount of gas is generated in the slurry tank. Most of the gas and a small amount of slurry are discharged through a pressure relief pipe on the slurry tank. Prolonged use can easily lead to blockages in the pressure relief pipe, thus affecting the normal operation of the FGD device. Utility Model Content

[0003] This application provides a flue gas desulfurization device that can effectively reduce pipe blockage in the flue gas desulfurization device.

[0004] This application provides a flue gas desulfurization device, including a housing, a first pipe, and a second pipe. The housing has a receiving cavity; the first pipe is connected to the housing and communicates with the receiving cavity; the second pipe is located on the side of the first pipe and has a water outlet, which communicates with the first pipe.

[0005] In some embodiments of this application, the first pipe is connected to the upper part of the housing; the second pipe is located on the side of the first pipe closer to the housing, so as to facilitate more thorough cleaning of the first pipe.

[0006] In some embodiments of this application, the axial direction of the water outlet is set at an angle to the axial direction of the first pipe, and the orientation of the water outlet extends along the side away from the housing, so as to more thoroughly clean the first pipe.

[0007] In some embodiments of this application, the flue gas desulfurization device further includes a first valve, which is disposed between the second pipeline and the first pipeline, and is used to control the on / off connection between the second pipeline and the first pipeline.

[0008] In some embodiments of this application, the first valve is a timed drain valve, so as to flush the first pipe at regular intervals.

[0009] In some embodiments of this application, the second pipeline also has a water inlet, and the flue gas desulfurization device further includes a booster pump connected to the water inlet. The booster pump is used to pressurize the water entering the second pipeline so as to more thoroughly clean the first pipeline.

[0010] In some embodiments of this application, a one-way valve is provided between the housing and the first pipe. The one-way valve is used to control the flow of fluid from the receiving cavity to the first pipe, thereby reducing the amount of liquid entering the receiving cavity from the first pipe.

[0011] In some embodiments of this application, the first pipe is a metal pipe; and / or the second pipe is a metal pipe, thereby increasing the strength of the first pipe and / or the second pipe.

[0012] In some embodiments of this application, the diameter of the first pipe ranges from 25 mm to 40 mm, and the diameter of the second pipe ranges from 25 mm to 40 mm.

[0013] In some embodiments of this application, the flue gas desulfurization device further includes a liquid collection tank, which is disposed on the side of the housing; the first pipe has a first opening and a second opening disposed at opposite ends, the first opening communicating with the receiving cavity, and the second opening facing the liquid collection tank, so as to facilitate the collection of waste liquid discharged from the first pipe.

[0014] The beneficial effects of this application embodiment are as follows: By providing a second pipe on the side of the first pipe, the second pipe can introduce liquid for flushing into the first pipe to clean the inside of the first pipe or unclog the first pipe, thereby reducing the accumulation of impurities on the inner wall of the first pipe and thus reducing the risk of the first pipe being blocked. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a flue gas desulfurization device in one embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the flue gas desulfurization device in another embodiment of this application.

[0018] Figure label:

[0019] 1. Flue gas desulfurization unit;

[0020] 10. Housing; 11. Receiving cavity; 12. One-way valve; 13. Feed inlet;

[0021] 20. First pipe; 21. First section; 22. Second section; 23. First opening; 24. Second opening;

[0022] 30. Second pipe; 31. Water outlet;

[0023] 40. First valve;

[0024] 50. Liquid collection tank body;

[0025] M1, the axial direction of the outlet; M2, the axial direction of the first pipe. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, a clear and complete description will be provided below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] In related technologies, flue gas desulfurization (FGD) devices are often used to reduce sulfur dioxide emissions from flue gas, thereby protecting the environment and ecosystems. FGD devices work by transporting a large amount of limestone powder from a powder silo to a slurry tank, where it dissolves in water to form a slurry. Flue gas is then introduced into the slurry, where sulfur-containing gases react chemically with suspended particles in the slurry and are removed. As limestone powder is continuously added, a large amount of gas is generated within the slurry tank. Simultaneously, an agitator is installed inside the slurry tank. Under the vigorous agitation of the agitator, most of the gas and a small amount of slurry are discharged through a pressure relief pipe on the slurry tank. Prolonged use can easily lead to blockage of the pressure relief pipe, thus affecting the normal operation of the FGD device.

[0028] For the above situation, please refer to Figure 1 This application proposes a flue gas desulfurization device 1, including a housing 10, a first pipe 20, and a second pipe 30. The housing 10 has a receiving cavity 11, and the first pipe 20 is connected to the housing 10 and communicates with the receiving cavity 11.

[0029] The box body 10 has a feed inlet 13 that communicates with the receiving cavity 11. During the slurry preparation process, a large amount of limestone powder is transported from the powder silo of the flue gas desulfurization device 1 to the receiving cavity 11 through the feed inlet 13 and dissolved with water in the receiving cavity 11. The receiving cavity 11 of the box body 10 can hold the slurry formed by limestone powder and water. When flue gas enters the receiving cavity 11 of the box body 10, the sulfur-containing gas in the flue gas reacts chemically with the slurry in the receiving cavity 11 and is absorbed. The gas generated in the receiving cavity 11 can be discharged from the first pipe 20. At the same time as the exhaust, a small amount of slurry will splash from the box body 10 into the first pipe 20 and flow along the first pipe 20 with the gas.

[0030] The second pipe 30 is located on the side of the first pipe 20. The second pipe 30 has an outlet 31, which is connected to the first pipe 20. Specifically, the second pipe 30 is used to introduce clean water or a mixture of liquids containing cleaning agents into the first pipe 20 to clean the inside of the first pipe 20 and reduce the accumulation of impurities inside the first pipe 20.

[0031] It should be noted that when the slurry flows with the gas in the first pipe 20, the slurry is easily dried by the gas during the flow process, leaving residues and accumulating on the inner wall of the first pipe 20, which can easily lead to blockage of the first pipe 20. In this embodiment, a second pipe 30 is provided on the side of the first pipe 20, so that the second pipe 30 can introduce liquid for flushing into the first pipe 20 to clean the inside of the first pipe 20 or unclog the first pipe 20, thereby reducing the accumulation of impurities on the inner wall of the first pipe 20 and thus reducing the risk of blockage of the first pipe 20.

[0032] Specifically, this application does not limit the specific arrangement of the first pipe 20 and the second pipe 30. For example, the first pipe 20 can be arranged horizontally or inclined, with its first end connected to the housing 10 and its second end extending away from the housing 10; or, for example, Figure 2 As shown, the first pipe 20 may include a first part 21 and a second part 22 that are interconnected. The first part 21 is perpendicular to and connected to the side wall of the box 10. The second part 22 is perpendicular to the first part 21, that is, the first part 21 is horizontal and the second part 22 is vertical (or the second part 22 is inclined). At this time, the second pipe 30 is connected to the first part 21 so that when water comes out of the second pipe 30, it can flush the first part 21 and the second part 22.

[0033] Please see Figure 1In some embodiments of this application, when gas is generated in the accommodating cavity 11 of the housing 10, the gas is located in the upper space of the accommodating cavity 11. Due to the large accumulation of gas, the gas pressure in the accommodating cavity 11 is high. The gas in the accommodating cavity 11 can only leave through the first pipe 20. The first pipe 20 is connected to the upper part of the housing 10, that is, the first pipe 20 is connected to the upper part of the accommodating cavity 11. At this time, the first pipe 20 facilitates the gas located in the upper part of the accommodating cavity 11 to the outside, so as to play a role in depressurizing the housing 10.

[0034] The first pipe 20 has a first opening 23 and a second opening 24 located at opposite ends. The first opening 23 is connected to the receiving cavity 11, and the second opening 24 can serve as the outlet of the first pipe 20. The second pipe 30 is located on the side of the first pipe 20 closer to the housing 10. That is, the second pipe 30 is located close to the first opening 23 of the first pipe 20. The flushing water flowing into the second pipe 30 can more fully and comprehensively flush the inner wall of the first pipe 20, and the flushing water carrying impurities in the first pipe 20 can be discharged from the second opening 24 of the first pipe 20.

[0035] Understandably, the gas in the receiving cavity 11 carries a small amount of slurry into the first pipe 20. The gas and slurry flow along the extension direction of the first pipe 20. During the flow, the water in the slurry gradually evaporates, thereby drying the slurry and leaving it on the inner wall of the first pipe 20. The flushing water flowing through the second pipe 30 can clean the inner wall of the first pipe 20 while flowing along the first pipe 20, and carry the slurry in the first pipe 20 away from the first pipe 20 through the second opening 24.

[0036] Please continue reading Figure 1 In some embodiments of this application, the axial direction M1 of the outlet 31 is set at an angle to the axial direction M2 of the first pipe 20. It can be understood that the section of the second pipe 30 near the outlet 31 is inclined relative to the first pipe 20. Therefore, the water flowing from the outlet 31 will impact the inner wall of the first pipe 20 and then flow along the extension direction of the first pipe 20. The axial direction M1 of the outlet 31 and the axial direction M2 of the first pipe 20 form an angle. This application does not specifically limit the angle of this angle, but a preferred angle is 45°.

[0037] The outlet 31 extends along the side away from the housing 10, and the outlet 31 is located on the side of the first pipe 20 close to the housing 10. That is to say, the water flow discharged from the second pipe 30 has an initial direction so that the water flow can flow along the first opening 23 of the first pipe 20 to the second opening 24 of the first pipe 20, thereby allowing the water flow entering the first pipe 20 to better flush the inner wall of the first pipe 20.

[0038] Please continue reading Figure 1 In some embodiments of this application, the flue gas desulfurization device 1 further includes a first valve 40, which is disposed between the second pipe 30 and the first pipe 20. The first valve 40 is used to control the opening and closing of the second pipe 30 and the first pipe 20.

[0039] Specifically, when a large amount of gas accumulates in the containment cavity 11, the first pipe 20 is mainly used to discharge gas to the outside. After a period of gas discharge, the slurry is prone to accumulate in the first pipe 20. At this time, the first valve 40 can be opened to allow the flushing water in the second pipe 30 to enter the first pipe 20 and flush and clean the first pipe 20. After the first valve 40 has been open for a period of time, that is, after the first pipe 20 has been cleaned, the first valve 40 can be closed to reduce the liquid flow in the first pipe 20, thereby reducing the interference of the liquid in the first pipe 20 on the gas discharge.

[0040] Furthermore, the first valve 40 is a timed drain valve, which allows flushing water to be periodically introduced into the second pipe 30 and to periodically flush the first pipe 20, thereby effectively reducing the phenomenon of blockage in the first pipe 20 and improving the working efficiency of the flue gas desulfurization device 1.

[0041] In some embodiments of this application, the second pipe 30 also has a water inlet (not shown in the figure), and the flue gas desulfurization device 1 further includes a booster pump (not shown in the figure). The booster pump is connected to the water inlet and is used to pressurize the water entering the second pipe 30, so that the water pressure in the second pipe 30 is higher, so as to more fully and thoroughly clean the first pipe 20. In this application embodiment, the specific value of the flushing water pressure is not limited; preferably, the water pressure range is 0.3 MPa to 0.4 MPa.

[0042] Please see Figure 1 In some embodiments of this application, a one-way valve 12 is provided between the housing 10 and the first pipe 20. The one-way valve 12 is used to control the flow of fluid from the receiving cavity 11 to the first pipe 20. The fluid can be gas or liquid. That is, in the first pipe 20, the fluid can only flow from the receiving cavity 11 to the second opening 24 of the first pipe 20. The fluid in the first pipe 20 cannot flow from the first pipe 20 to the receiving cavity 11. Therefore, when the second pipe 30 introduces flushing water into the first pipe 20 for flushing, the flushing water will only flow along the first pipe 20 to the second opening 24, preventing the flushing water used to clean the first pipe 20 from entering the receiving cavity 11.

[0043] Furthermore, when flushing water is introduced into the first pipe 20 and the second pipe 30, the water pressure is relatively high, so the impact force of the water flow on the inner wall of the pipe is also relatively high. In some embodiments of this application, the first pipe 20 is a metal pipe, and / or the second pipe 30 is a metal pipe, so that the strength of the first pipe 20 and the second pipe 30 is greater, thereby better able to withstand the impact of high-pressure water flow and extend the service life of the first pipe 20 and the second pipe 30.

[0044] In some embodiments of this application, the diameter of the first pipe 20 is in the range of 25 mm to 40 mm to facilitate the discharge of gas from the receiving cavity 11; the diameter of the second pipe 30 is in the range of 25 mm to 40 mm to facilitate the introduction of a large amount of cleaning water for cleaning.

[0045] For example, the diameter of the second pipe 30 is smaller than the diameter of the first pipe 20, which makes it easier for the high-pressure flushing water discharged from the second pipe 30 to enter the first pipe 20, and the gas and liquid in the first pipe 20 can flow into the second opening 24 of the first pipe 20 at the same time; or, the diameter of the first pipe 20 is smaller than the diameter of the second pipe 30, so that when the second pipe 30 drains water into the first pipe 20, the flushing water can fill the first pipe 20, thereby cleaning the inner wall of the first pipe 20 in all directions.

[0046] Please see Figure 2 In some embodiments of this application, the flue gas desulfurization device 1 further includes a liquid collection tank 50, which is disposed on the side of the housing 10. The second opening 24 of the first pipe 20 faces the liquid collection tank 50. After the flushing water introduced into the first pipe 20 by the second pipe 30 has cleaned the inner wall of the first pipe 20, it is discharged into the liquid collection tank 50 from the second opening 24 of the first pipe 20. The liquid collection tank 50 can be used to collect the waste liquid discharged from the first pipe 20 so as to facilitate centralized treatment of the waste liquid and reduce pollution.

[0047] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flue gas desulfurization device, characterized in that, include: The box-shaped enclosure has a receiving cavity; A first pipe is connected to the housing, and the first pipe is in communication with the receiving cavity; A second pipe is located on the side of the first pipe, and the second pipe has an outlet that is connected to the first pipe.

2. The flue gas desulfurization device according to claim 1, characterized in that, The first pipe is connected to the upper part of the box, and the second pipe is located on the side of the first pipe closer to the box.

3. The flue gas desulfurization device according to claim 1, characterized in that, The axial direction of the water outlet is set at an angle to the axial direction of the first pipe, and the orientation of the water outlet extends along the side away from the box body.

4. The flue gas desulfurization device according to claim 1, characterized in that, The flue gas desulfurization device also includes: A first valve is disposed between the second pipe and the first pipe, and the first valve is used to control the opening and closing of the second pipe and the first pipe.

5. The flue gas desulfurization device according to claim 4, characterized in that, The first valve is a timed drain valve.

6. The flue gas desulfurization device according to claim 1, characterized in that, The second pipeline also has a water inlet, and the flue gas desulfurization device further includes: A booster pump, connected to the inlet, is used to pressurize the water entering the second pipe.

7. The flue gas desulfurization device according to claim 1, characterized in that, A one-way valve is provided between the housing and the first pipe, and the one-way valve is used to control the flow of fluid from the receiving cavity to the first pipe.

8. The flue gas desulfurization device according to claim 1, characterized in that, The first pipe is a metal pipe; and / or, the second pipe is a metal pipe.

9. The flue gas desulfurization device according to claim 1, characterized in that, The diameter of the first pipe ranges from 25 mm to 40 mm, and the diameter of the second pipe ranges from 25 mm to 40 mm.

10. The flue gas desulfurization device according to claim 1, characterized in that, The flue gas desulfurization device also includes a liquid collection tank, which is disposed on the side of the housing; The first pipe has a first opening and a second opening at opposite ends, the first opening communicating with the receiving cavity and the second opening facing the liquid collection tank.

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