Drainage system of flue gas desulfurization system

Abstract

The utility model provides a drainage system of a flue gas desulfurization system, which relates to the technical field of flue gas desulfurization drainage systems and comprises a drainage pit, a retention wall is arranged in the drainage pit and divides the interior of the drainage pit into a first pit chamber and a second pit chamber, and a pit stirring mechanism is arranged in the first pit chamber. A non-clogging sewage pump is arranged on the ground on one side of the first pit chamber, the input end of the non-clogging sewage pump is communicated with the interior of the first pit chamber through a first pipeline, a filtering mechanism is arranged above the interior of the second pit chamber, a second pipeline is arranged at the output end of the non-clogging sewage pump, and one end of the second pipeline is communicated with the interior of the filtering mechanism; according to the pit stirring mechanism, impurities and slurry can be mixed, then the mixture is pumped into the filtering mechanism arranged in the second pit chamber through the non-clogging sewage pump to be filtered, the impurities can be effectively removed through filtering, and the problems that the drainage pit pump is clogged, the pump force is reduced and even the drainage pit pump is shut down are solved; and the operation stability of the drainage system can be effectively ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas desulfurization drainage systems, and in particular to a flue gas desulfurization drainage system. Background Technology

[0002] Flue gas desulfurization (FGD) drainage systems are an important component of FGD systems in industrial sectors such as thermal power plants and steel mills. Their function is to collect, treat, and discharge wastewater generated during the desulfurization process, ensuring that the wastewater meets discharge standards or is reused, while preventing environmental pollution.

[0003] Currently, during the operation of drainage systems, impurities from the flue gas desulfurization system are easily generated. These impurities accumulate in the drainage sump along with the slurry, clogging the filter screen of the drainage sump pump, causing a decrease in the pump's output or even forcing it to shut down, thus affecting the operation of environmental protection equipment. Therefore, this utility model proposes a drainage system for flue gas desulfurization systems to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a drainage system for a flue gas desulfurization system. The pit mixing mechanism can mix impurities with slurry, and then pump the mixture into a filter mechanism located in the second pit chamber via a non-clogging sewage pump for filtration. The filtration can effectively remove impurities and avoid problems such as blockage, reduced pumping power, or even shutdown of the drainage pit pump, thus effectively ensuring the operational stability of the drainage system.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The flue gas desulfurization system drainage system includes a drainage pit with a water-retaining wall inside, which divides the drainage pit into a first pit chamber and a second pit chamber. The first pit chamber is connected to the flue gas desulfurization system. A pit mixing mechanism is installed inside the first pit chamber. A non-clogging sewage pump is installed on the ground on one side of the first pit chamber. The input end of the non-clogging sewage pump is connected to the interior of the first pit chamber through a first pipe. A filter mechanism is installed above the interior of the second pit chamber. A second pipe is installed at the output end of the non-clogging sewage pump, and one end of the second pipe is connected to the interior of the filter mechanism.

[0007] The filtration mechanism includes a filter box shell, a first mounting slot, a second mounting slot, and a filter plate. The filter box shell has a first mounting slot and a second mounting slot located on its upper interior. The filter plate can be detachably installed in the first mounting slot and the second mounting slot.

[0008] A further improvement is that the pit mixing mechanism includes a top beam plate, a mixing shaft, mixing blades, and a drive motor. The top beam plate is provided at the top of the first pit chamber. One end of the top beam plate is connected to the upper side of the water retaining wall. The mixing shaft is rotatably provided on the top beam plate. The mixing shaft is driven by the drive motor. The lower end of the mixing shaft extends into the first pit chamber and is provided with mixing blades.

[0009] Further improvements include: the top of the filter box shell is provided with a through hole, and there are multiple through holes; a water distribution pipe is provided at the bottom of one end of the second pipe; the number and position of the water distribution pipe are adapted to the through holes; and the lower end of the water distribution pipe extends from the through hole into the interior of the filter box shell.

[0010] A further improvement is that: both sides of the first and second mounting grooves are provided with positioning grooves, and both ends of the filter plate are provided with positioning blocks that are adapted to the positioning grooves.

[0011] A further improvement is that: a positioning hole is provided in the positioning groove, and a positioning bolt is provided on the positioning block, with the positioning bolt connected to the positioning hole.

[0012] A further improvement is that the water-retaining wall includes a beam and a wall body, the bottom of the beam is provided with the wall body, and both ends of the beam are installed to the top of the first pit chamber by anchor rods.

[0013] The beneficial effects of this utility model are as follows: This utility model divides the interior of the drainage pit into a first pit chamber and a second pit chamber by setting a water retaining wall inside the drainage pit. The first pit chamber is connected to the flue gas desulfurization system and a pit mixing mechanism is set inside it. The pit mixing mechanism can mix impurities with slurry, and then pump it into the filter mechanism set in the second pit chamber by a non-clogging sewage pump for filtration. The filtration can effectively remove impurities and avoid problems such as blockage, reduced pump power or even shutdown of the drainage pit pump, which can effectively ensure the operational stability of the drainage system.

[0014] The filter box of this utility model has a first mounting groove and a second mounting groove on the upper part of the inner shell. The filter plates can be assembled with the first mounting groove or the second mounting groove respectively for filtration. The alternating operation makes it easy to disassemble a set of filter plates for cleaning, ensuring the continuous use of the device and realizing uninterrupted filtration. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the pit mixing mechanism of this utility model;

[0017] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0018] The components include: 1. Drainage pit; 2. Retaining wall; 3. First pit chamber; 4. Second pit chamber; 5. Pit mixing mechanism; 501. Top beam plate; 502. Mixing shaft; 503. Mixing blades; 504. Drive motor; 6. Non-clogging sewage pump; 7. First pipe; 8. Second pipe; 9. Filter box shell; 10. First mounting groove; 11. Second mounting groove; 12. Filter plate; 13. Water distribution pipe; 14. Positioning groove; 15. Positioning block; 16. Positioning hole; 17. Positioning bolt; 18. Anchor rod. Detailed Implementation

[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0020] according to Figure 1-3 As shown, this embodiment proposes a drainage system for a flue gas desulfurization system, including a drainage pit 1. A retaining wall 2 is provided within the drainage pit 1, dividing the interior of the drainage pit 1 into a first chamber 3 and a second chamber 4. The first chamber 3 is connected to the flue gas desulfurization system. A pit stirring mechanism 5 is provided inside the first chamber 3. A non-clogging sewage pump 6 is provided on the ground on one side of the first chamber 3. The input end of the non-clogging sewage pump 6 is connected to the interior of the first chamber 3 via a first pipe 7. A filtration mechanism is provided above the interior of the second chamber 4. A second pipe 8 is provided at the output end of the non-clogging sewage pump 6, with one end of the second pipe 8 connected to the interior of the filtration mechanism. The filtration mechanism includes a filter box shell 9, a first mounting groove 10, a second mounting groove 11, and a filter plate 12. The first mounting groove 10 and the second mounting groove 11 are provided above the interior of the filter box shell 9. The filter plate 12 is detachably installed in the first mounting groove 10 and the second mounting groove 11. In this invention, the mesh diameter of the filter plate 12 is preferably 5mm.

[0021] When the flue gas desulfurization system of this utility model is in operation, the wastewater discharged from the flue gas desulfurization system enters the first pit chamber 3. Then, the pit mixing mechanism 5 in the first pit chamber 3 is activated to mix the slurry and impurities, so that the mixed liquid can be sucked into the filter mechanism by the non-clogging sewage pump 6 and pumped into the filter mechanism. When the filter mechanism filters, a set of filter plates 12 is installed in the first installation groove 10 or the second installation groove 11. Then the mixed liquid is filtered through the filter plates 12. When there are too many impurities on the filter plates 12, a set of clean filter plates 12 is installed in the empty set of installation grooves. Then the filter plates 12 containing impurities are removed and cleaned. The filtered mixed liquid is discharged into the second pit chamber 4 and pumped out by the existing drainage pit pump in the second pit chamber 4.

[0022] The non-clogging sewage pump 6 used in this invention is a pump for conveying liquids containing solid particles and long fibrous impurities. It can start working without installing a foot valve or priming water. This characteristic allows the pump to quickly form a vacuum upon startup, thus achieving self-priming. The pump typically consists of a pump body, impeller, rear cover, mechanical seal, pump shaft, bearing housing, inlet valve, gas-liquid separator pipe, water inlet valve, and inlet and outlet pipes. Its unique impeller design can effectively shear and break down solid particles and fibrous materials in sewage, preventing clogging.

[0023] The water-retaining wall 2, the pit mixing mechanism 5, the non-clogging sewage pump 6, and the filter mechanism involved in this utility model are all assembled and can be flexibly applied to existing drainage pits 1, with high flexibility of use.

[0024] The pit mixing mechanism 5 includes a top beam plate 501, a mixing shaft 502, mixing blades 503, and a drive motor 504. The top beam plate 501 is located at the top of the first pit chamber 3. One end of the top beam plate 501 is connected to the upper side of the retaining wall 2. The mixing shaft 502 is rotatably mounted on the top beam plate 501. The mixing shaft 502 is driven by the drive motor 504. The lower end of the mixing shaft 502 extends into the first pit chamber 3 and is equipped with mixing blades 503. By starting the drive motor 504, the mixing shaft 502 is controlled to rotate, and then the mixing blades 503 mix impurities and slurry.

[0025] The top of the filter housing 9 has multiple through holes. One end of the second pipe 8 has a water distribution pipe 13 at its bottom. The number and position of the water distribution pipes 13 are adapted to the through holes. The lower end of the water distribution pipes 13 extends from the through holes into the interior of the filter housing 9. By setting the water distribution pipes 13, uniform filtration can be achieved, and large-flow sewage can be prevented from directly washing the filter plate 12.

[0026] Both sides of the first mounting groove 10 and the second mounting groove 11 are provided with positioning grooves 14, and both ends of the filter plate 12 are provided with positioning blocks 15 that are adapted to the positioning grooves 14. Positioning holes 16 are provided in the positioning grooves 14, and positioning bolts 17 are provided on the positioning blocks 15, with the positioning bolts 17 connected to the positioning holes 16. This arrangement allows the stirring blades 503 to be easily disassembled and replaced.

[0027] The water-retaining wall 2 includes a beam and a wall. The bottom of the beam is provided with a wall, and both ends of the beam are installed to the top of the first pit chamber 3 through anchor rods 18.

[0028] This utility model divides the interior of the drainage pit 1 into a first pit chamber 3 and a second pit chamber 4 by setting a water retaining wall 2 inside the drainage pit 1. The first pit chamber 3 is connected to the flue gas desulfurization system and a pit mixing mechanism 5 is set inside it. The pit mixing mechanism 5 can mix impurities with slurry, and then pump it into the filter mechanism set in the second pit chamber 4 by a non-clogging sewage pump 6 for filtration. The filtration can effectively remove impurities and avoid problems such as blockage, reduced pump power or even shutdown of the drainage pit pump, which can effectively ensure the operational stability of the drainage system.

[0029] The filter box housing 9 of this utility model is provided with a first mounting groove 10 and a second mounting groove 11 on the upper part of the interior. The filter plate 12 can be assembled with the first mounting groove 10 or the second mounting groove 11 respectively to perform filtration operations. The alternating operation makes it easy to disassemble a set of filter plates 12 for cleaning, ensuring the continuous use of the device and realizing uninterrupted filtration.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drainage system for a flue gas desulfurization system, including a drainage pit (1), characterized in that: The drainage pit (1) is equipped with a water retaining wall (2), which divides the interior of the drainage pit (1) into a first pit chamber (3) and a second pit chamber (4). The first pit chamber (3) is connected to the flue gas desulfurization system. The first pit chamber (3) is equipped with a pit stirring mechanism (5). A non-clogging sewage pump (6) is provided on the ground on one side of the first pit chamber (3). The input end of the non-clogging sewage pump (6) is connected to the interior of the first pit chamber (3) through a first pipe (7). A filter mechanism is provided above the interior of the second pit chamber (4). The output end of the non-clogging sewage pump (6) is equipped with a second pipe (8). One end of the second pipe (8) is connected to the interior of the filter mechanism. The filtration mechanism includes a filter box shell (9), a first mounting groove (10), a second mounting groove (11), and a filter plate (12). The filter box shell (9) has a first mounting groove (10) and a second mounting groove (11) on its upper interior. The filter plate (12) can be detachably installed in the first mounting groove (10) and the second mounting groove (11).

2. The drainage system of the flue gas desulfurization system according to claim 1, characterized in that: The pit mixing mechanism (5) includes a top beam plate (501), a mixing shaft (502), mixing blades (503) and a drive motor (504). The top of the first pit chamber (3) is provided with a top beam plate (501). One end of the top beam plate (501) is connected to the upper side of the water retaining wall (2). The mixing shaft (502) is rotatably provided on the top beam plate (501). The mixing shaft (502) is driven by the drive motor (504). The lower end of the mixing shaft (502) extends into the interior of the first pit chamber (3) and is provided with mixing blades (503).

3. The drainage system of the flue gas desulfurization system according to claim 1, characterized in that: The filter box shell (9) has a through hole at the top, and there are multiple through holes. The bottom of one end of the second pipe (8) is provided with a water distribution pipe (13). The number and position of the water distribution pipe (13) are adapted to the through holes. The lower end of the water distribution pipe (13) extends from the through hole into the interior of the filter box shell (9).

4. The drainage system of the flue gas desulfurization system according to claim 1, characterized in that: The first mounting groove (10) and the second mounting groove (11) are provided with positioning grooves (14) on both sides, and the filter plate (12) is provided with positioning blocks (15) at both ends that are adapted to the positioning grooves (14).

5. The drainage system of the flue gas desulfurization system according to claim 4, characterized in that: The positioning groove (14) is provided with a positioning hole (16), and the positioning block (15) is provided with a positioning bolt (17), which is connected to the positioning hole (16).

6. The drainage system of the flue gas desulfurization system according to claim 1, characterized in that: The water-retaining wall (2) includes a beam and a wall body. The bottom of the beam is provided with a wall body, and both ends of the beam are installed at the top of the first pit chamber (3) through anchor rods (18).

Images