A flue gas desulfurization device

Abstract

The utility model belongs to the flue gas desulfurization technical field, and disclose a kind of flue gas desulfurization device, including desulfurization tower, the surface of desulfurization tower is penetrated by two groups of pipelines, left side pipeline is lower than right side pipeline, the inner chamber of desulfurization tower is set from top to bottom into spraying area and sulfuration absorption area, and the bottom end of the sulfuration absorption area of desulfurization tower is attached with mixing tank;The surface of pipeline is respectively provided with water spraying assembly and air jet pipe, water spraying assembly is located above air jet pipe, water spraying assembly includes shell, the bottom end of shell is fixedly connected with protective sleeve, the inner chamber of shell is provided with cleaning assembly, by above-mentioned scheme, it has solved that there is smoke pipeline to transmit high-temperature sulfur-containing gas inside desulfurization tower, in the process that gas smoke enters desulfurization tower, smoke particle can be left on the surface of pipeline, block the air intake between pipeline and desulfurization tower, lead to poor desulfurization effect when subsequent spraying.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas desulfurization technology, specifically a flue gas desulfurization device. Background Technology

[0002] In the process of chemical production, sulfur dioxide-containing oxygen is generated. The sulfur dioxide in the flue gas is converted into harmless substances or recyclable and beneficial substances by means of materials or chemicals, thereby reducing the pollution of air by sulfur dioxide. Existing flue gas desulfurization devices generally use wet desulfurization or dry-wet desulfurization. In this type of desulfurization, there are residues at the nozzle position during the desulfurization process.

[0003] Meanwhile, patent application number 201620924904.8 discloses a flue gas desulfurization device, including a shell, a flue gas inlet on one side of the shell, a flue gas outlet on the other side of the shell, exhaust fans installed on both the flue gas inlet and the flue gas outlet, flue gas baffles inside the shell, multiple flue gas baffles forming flue gas channels between the baffles, a bottom plate inside the shell, an alkali solution tank under the bottom plate, an alkali solution feeding port on one side of the alkali solution tank, a feeding cover at one end of the alkali solution feeding port, a water spray pipe on the upper inner wall of the shell, several nozzles installed on the lower side of the water spray pipe, the water spray pipe connected to one side of the alkali solution tank through a water pipe, and a water pump installed on the water pipe.

[0004] However, during the implementation of the relevant technology, it was found that the above-mentioned flue gas desulfurization device has a problem: when high-temperature sulfur-containing gas is transmitted from the flue gas pipe to the desulfurization tower, the flue gas pipe contains dust particles, which cause the flue gas to enter the desulfurization tower. As a result, the dust particles remain on the surface of the pipe, blocking the air intake between the pipe and the desulfurization tower, leading to poor desulfurization effect during subsequent spraying. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a flue gas desulfurization device that adds nozzles between the pipeline and the desulfurization tower to clean the deposits on the inner wall of the pipeline and maintain smooth flue gas flow.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flue gas desulfurization device, including a desulfurization tower, wherein two sets of pipes are connected through the surface of the desulfurization tower, the pipe on the left side is lower than the pipe on the right side, the inner cavity of the desulfurization tower is arranged from top to bottom as a spraying area and a sulfidation absorption area, and a mixing box is attached to the bottom of the sulfidation absorption area of ​​the desulfurization tower.

[0007] The surface of the pipe is respectively provided with a water spray assembly and an air jet pipe. The water spray assembly is located above the air jet pipe. The water spray assembly includes a shell. A protective sleeve is fixedly connected to the bottom end of the shell. A cleaning assembly is provided in the inner cavity of the shell. The cleaning assembly includes a cleaning chamber. The cleaning chamber is fixed in the inner cavity of the shell. A main water pipe runs through the inside of the shell. The cleaning chamber and a slip ring pass through the outer side of the main water pipe in sequence and are fixedly connected to a nozzle. The nozzle slides back and forth inside the protective sleeve. The push plate slides in the inner cavity of the cleaning chamber. A secondary water pipe runs through the surface of the main water pipe. The secondary water pipe passes through the inner wall of the cleaning chamber and the water outlet is located at the top of the push plate.

[0008] Preferably, a fixed rod is slidably connected to the surface of the push plate, and a spring is sleeved on the outside of the fixed rod. The spring is set at the bottom end of the slip ring and the top end of the nozzle, and the nozzle slides in the chamber with the bottom opening facing downward in the outer shell.

[0009] Preferably, the surface of the cleaning chamber is provided with a circular groove, and the fixing rod passes through the inside of the slip ring and slides inside the circular groove of the cleaning chamber.

[0010] Preferably, the inner wall of the cleaning chamber is provided with an annular groove, and a number of sliders are slidably connected inside the annular groove. Each of the sliders is fixedly connected to a brush, and the brushes are arranged in a ring array on the surface of the nozzle. The brushes rotate inside the cleaning chamber.

[0011] Preferably, the nozzle slides inside the protective sleeve and the cleaning chamber and abuts against the surface of the brush, which is made of a flexible material.

[0012] Preferably, a pressurized water pipe is passed through the surface of the main water pipe, and the other end of the pressurized water pipe passes through the inner wall of the cleaning chamber. The inner wall of the cleaning chamber is provided with a water outlet, and the water outlet of the pressurized water pipe faces the surface of the brush.

[0013] Preferably, valves are fitted onto the surfaces of the pressurized water pipe, the main water pipe, and the pipeline, and the inner wall of the pipeline is made of fiberglass material.

[0014] Preferably, the auxiliary water pipe is configured such that the diameter at the top end is larger than the diameter at the bottom end, and the sliding range of the push plate is limited between the top of the inner wall of the cleaning chamber and the tops of several sets of pressurized water pipes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model adds a water spray assembly to the surface of the pipeline to flush away the solid deposits that accumulate at the connection between the desulfurization tower and the pipeline due to prolonged use, which reduces the air intake. The nozzles inside the water spray assembly are used to flush away the solid deposits. When not in use, the nozzles can slide to the inner wall of the protective sleeve to protect the outlet of the nozzles. The nozzles are driven by water pressure, eliminating the need for other driving devices, which facilitates installation and reduces the need to protect the nozzle surface when not in use, thus preventing clogging of the channels.

[0017] 2. This utility model adds a cleaning chamber inside the outer shell. After the nozzle has been used for a long time, the surface of the nozzle is rubbed by a brush to clean the solid deposits on the nozzle surface. The problem of solid deposit accumulation is significantly improved, the flue gas entering the absorption tower is evenly distributed, and the desulfurization efficiency is improved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the outer shell structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the annular groove structure on the surface of the cleaning chamber of this utility model;

[0021] Figure 4 This is a structural schematic diagram of the cross-sectional view of the cleaning chamber of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the nozzle of this utility model.

[0023] In the diagram: 1. Desulfurization tower; 2. Pipeline; 3. Water spray assembly; 31. Outer shell; 32. Protective sleeve; 33. Pressurized water pipe; 34. Main water pipe; 35. Auxiliary water pipe; 36. Push plate; 37. Slip ring; 38. Fixing rod; 39. Spring; 4. Valve; 5. Cleaning assembly; 51. Cleaning chamber; 52. Sliding block; 53. Brush; 54. Water outlet; 55. Annular chute; 6. Nozzle; 7. Mixing box; 8. Air jet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5As shown, this utility model provides a flue gas desulfurization device, including a desulfurization tower 1. Two sets of pipes 2 are connected through the surface of the desulfurization tower 1. The pipe 2 on the left side is lower than the pipe 2 on the right side. The inner cavity of the desulfurization tower 1 is arranged from top to bottom as a spraying area and a sulfurization absorption area. A mixing box 7 is attached to the bottom of the sulfurization absorption area of ​​the desulfurization tower 1.

[0026] The surface of pipe 2 is respectively provided with a water spray assembly 3 and an air jet pipe 8. The water spray assembly 3 is located above the air jet pipe 8. The water spray assembly 3 includes a housing 31. A protective sleeve 32 is fixedly connected to the bottom end of the housing 31. A cleaning assembly 5 is provided in the inner cavity of the housing 31. The cleaning assembly 5 includes a cleaning chamber 51. The cleaning chamber 51 is fixed in the inner cavity of the housing 31. A main water pipe 34 runs through the inside of the housing 31. The cleaning chamber 51 and a slip ring 37 pass through the outside of the main water pipe 34 in sequence and are fixedly connected to a nozzle 6. The nozzle 5 slides back and forth inside the protective sleeve 32. A push plate 36 is fixedly connected to the surface of the slip ring 37. The push plate 36 slides in the inner cavity of the cleaning chamber 51. A secondary water pipe 35 runs through the surface of the main water pipe 34. The secondary water pipe 35 passes through the inner wall of the cleaning chamber 51 and the water outlet is located at the top of the push plate 36.

[0027] Specifically, when the nozzle 6 needs to slide out from inside the protective sleeve 32, it needs to overcome the spring 39 sleeved on the outside of the fixing rod 38 to slide the nozzle 6 at the bottom of the fixing rod 38 downward. When the nozzle 6 is no longer needed, the water flow stops, and the nozzle 6 returns to its original position under the reaction of the spring 39.

[0028] Furthermore, a circular groove is provided on the surface of the cleaning chamber 51, and the fixing rod 38 passes through the interior of the slip ring 37 and slides inside the circular groove of the cleaning chamber 51.

[0029] Furthermore, the inner wall of the cleaning chamber 51 is provided with an annular groove 55, and several sets of sliders 52 are slidably connected inside the annular groove 55. Brushes 53 are fixedly connected to the surfaces of the several sets of sliders 52 respectively. The several sets of brushes 53 are arranged in a ring array on the surface of the nozzle 6. When the brushes 53 rotate inside the cleaning chamber 51, they rub the surface of the nozzle 6 where solids are stuck to the surface, thereby cleaning the surface of the nozzle 6.

[0030] It is worth noting that the nozzle 6 slides inside the protective sleeve 32 and the cleaning chamber 51 and is pressed against the surface of the brush 53. The brush 53 is made of a flexible material to avoid abrasion on the surface of the nozzle 6, which would cause the protective paint to peel off.

[0031] It is worth noting that a pressurized water pipe 33 runs through the surface of the main water pipe 34. The other end of the pressurized water pipe 33 passes through the inner wall of the cleaning chamber 51. Water flowing out from the pressurized water pipe 33 flows out from the water outlet 54 opened in the inner wall of the cleaning chamber 51. The water outlet of the pressurized water pipe 33 faces the surface of the brush 53, pushing the brush 53 to rotate.

[0032] It is worth mentioning that valves 4 are respectively installed on the surface of the pressurized water pipe 33, the main water pipe 34 and the pipe 2. By reasonably controlling the water flow, the functions of spraying and pressurizing are realized. The inner wall of the pipe 2 is made of fiberglass material, which can resist external corrosion.

[0033] It is worth emphasizing that the diameter of the auxiliary water pipe 35 at the top position is larger than that at the bottom position. With this design, when water flows from the larger auxiliary water pipe 35 to the smaller auxiliary water pipe 35, the inner diameter of the pipe decreases and the flow velocity increases, generating a greater impact force. The greater impact force can impact the push plate 36. The sliding range of the push plate 36 is limited to the top of the inner wall of the cleaning chamber 51 and the top of several sets of pressurized water pipes 33. At the same time, this sliding range is also the sliding range of the nozzle 6, ensuring that the nozzle 6 can slide out from the surface of the protective sleeve 32. The protective sleeve 32 can also protect the surface of the nozzle 6.

[0034] The desulfurization tower 1 is existing technology and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail. The "front, back, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0035] Working principle:

[0036] When the flue gas enters the desulfurization tower 1 through the inlet flue and flows into the desulfurization tower 1 through the pipe 2, a large temperature gradient is formed at the dry / wet interface. In this area, the flue gas temperature usually drops rapidly from 80-150℃ to about 50℃. Furthermore, due to the vortex effect or uneven distribution of the inlet flue gas, the falling slurry will be carried into the inlet flue. After the slurry comes into contact with the hot wall of the flue, the water evaporates and gradually forms solid deposits.

[0037] Connect the water pipe to the water inlet at the top of the outer casing 31. After the water pipe is connected to the main water pipe 34 inside the outer casing 31, the valve 4 used to control the water flow inside the pressurized water pipe 33 needs to be closed first to ensure that the water can only flow from the main water pipe 34 to the nozzle 6 and the auxiliary water pipe 35 respectively. During the flow, the water sprayed from the auxiliary water pipe 35 impacts the push plate 36 inside the cleaning chamber 51. The push plate 36 pushes the fixing rod 38 to slide outward along the surface of the slip ring 37. After overcoming the torque of the fixing rod 38, the nozzle 6 slides from the temporal part of the cleaning chamber 51 into the interior of the protective sleeve 32 and continues to slide until the water outlet of the nozzle 6 can rinse and soften the solid sediment area on the inner wall of the pipe 2. During the softening process, the solid sediment adhering to the inside of the pipe 2 is pushed into the interior of the desulfurization tower 1 in conjunction with the jet pipe 8.

[0038] When rinsing of solids is no longer required, water inflow is stopped. The fixing rod 38 drives the nozzle 6 to slide from inside the protective sleeve 32 into the cleaning chamber 51. During the sliding process, the nozzle 6 enters the cleaning chamber 51 and comes into contact with the brush 53. The valve 4 on the surface of the main water pipe 34 is closed, and the valve 4 on the surface of the pressurized water pipe 33 is opened to control the flow of water through the pressurized water pipe 33. Water flows out from the outlet hole 54 on the inner wall of the cleaning chamber 51 through the pressurized water pipe 33. The water discharged from the outlet hole 54 impacts the surface of the brush 53. The brush 53 rotates due to the impact of the water. The slider 52 connected to the brush 53 rotates in the annular groove 55 inside the cleaning chamber 51. During the rotation, the brush 53 rubs against the surface of the nozzle 6, rinsing off the solids that fall onto the surface of the nozzle 6 during rinsing, making it easier for subsequent use.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulphurization plant comprising a desulphurization tower (1), characterized in that: Two sets of pipes (2) are connected to the surface of the desulfurization tower (1). The pipe (2) on the left side is lower than the pipe (2) on the right side. The inner cavity of the desulfurization tower (1) is arranged from top to bottom as a spraying area and a sulfurization absorption area. A mixing box (7) is attached to the bottom of the sulfurization absorption area of ​​the desulfurization tower (1). The surface of the pipe (2) is respectively provided with a water spray assembly (3) and a jet pipe (8). The water spray assembly (3) is located above the jet pipe (8). The water spray assembly (3) includes a shell (31). A protective sleeve (32) is fixedly connected to the bottom end of the shell (31). A cleaning assembly (5) is provided in the inner cavity of the shell (31). The cleaning assembly (5) includes a cleaning chamber (51). The cleaning chamber (51) is fixed in the inner cavity of the shell (31). A main water pipe (3) runs through the inside of the shell (31). 4) The main water pipe (34) is connected to a cleaning chamber (51) and a slip ring (37) in sequence on the outside and a nozzle (6) is fixedly connected thereto. The nozzle (6) slides back and forth inside the protective sleeve (32). A push plate (36) is fixedly connected to the surface of the slip ring (37). The push plate (36) slides in the inner cavity of the cleaning chamber (51). A secondary water pipe (35) is connected through the surface of the main water pipe (34). The secondary water pipe (35) passes through the inner wall of the cleaning chamber (51) and the water outlet is located at the top of the push plate (36).

2. A flue gas desulphurization device according to claim 1, characterized in that: The surface of the push plate (36) is slidably connected to a fixing rod (38), and a spring (39) is sleeved on the outside of the fixing rod (38). The spring (39) is set at the bottom end of the slip ring (37) and the top end of the nozzle (6). The nozzle (6) slides in the chamber with the bottom opening facing downward in the outer shell (31).

3. A flue gas desulphurization device according to claim 2, characterized in that: The surface of the cleaning chamber (51) is provided with a circular groove, and the fixing rod (38) passes through the inside of the slip ring (37) and slides inside the circular groove of the cleaning chamber (51).

4. A flue gas desulphurization device according to claim 3, characterized in that: The inner wall of the cleaning chamber (51) is provided with an annular groove (55). Several sets of sliders (52) are slidably connected inside the annular groove (55). Brushes (53) are fixedly connected to the surfaces of the several sets of sliders (52). The several sets of brushes (53) are arranged in an annular array on the surface of the nozzle (6). The brushes (53) rotate inside the cleaning chamber (51).

5. A flue gas desulphurization device according to claim 1, characterized in that: The nozzle (6) slides inside the protective sleeve (32) and the cleaning chamber (51) and abuts against the surface of the brush (53), which is made of a flexible material.

6. A flue gas desulphurization device according to claim 1, characterized in that: The surface of the main water pipe (34) is permeated by a pressurized water pipe (33), and the other end of the pressurized water pipe (33) penetrates the inner wall of the cleaning chamber (51). The inner wall of the cleaning chamber (51) is provided with a water outlet (54), and the water outlet of the pressurized water pipe (33) faces the surface of the brush (53).

7. A flue gas desulphurization device according to claim 6, characterized in that: Valves (4) are respectively fitted on the surface of the pressurized water pipe (33), the main water pipe (34) and the pipe (2), and the inner wall of the pipe (2) is made of fiberglass material.

8. A flue gas desulphurization device according to claim 1, characterized in that: The auxiliary water pipe (35) is arranged to have a top end diameter greater than a bottom end diameter, and the sliding range of the push plate (36) is limited between the top end of the inner wall of the cleaning chamber (51) and the top ends of the plurality of groups of punched water pipes (33).

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