Closed-loop wet desulphurization device for kiln tail flue gas

Abstract

The utility model relates to the technical field of desulfurization equipment, in particular to a closed-loop wet desulfurization device for kiln tail flue gas. According to the technical scheme, the device comprises a treatment tower, communicating pipes, water spraying pipes and connecting rods, the communicating pipes are installed at the upper ends of the outer walls of the two sides of the treatment tower, the water spraying pipes distributed in parallel at equal intervals are inserted into the outer walls of one sides of the communicating pipes, supporting frames are installed on one sides of the inner walls of the water spraying pipes, and movable holes are formed in the supporting frames; a connecting rod is movably installed in the movable hole, a flow guide plate is installed on the outer wall of one end of the connecting rod, and a plug is installed on the outer wall of one side of the flow guide plate, by arranging the water spraying pipe, the connecting rod and the plug, the effect of reducing the equipment use cost is achieved, electric control equipment is prevented from being used, and the subsequent maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization equipment, in particular to a closed-loop kiln tail flue gas wet desulfurization device. Background Art

[0002] Wet desulfurization is characterized by the desulfurization system being located at the end of the flue and after the dust collector. The reaction temperature of the desulfurization process is lower than the dew point, so the flue gas after desulfurization needs to be reheated before it can be discharged. Because it is a gas-liquid reaction, its desulfurization reaction speed is fast, the efficiency is high, and the utilization rate of desulfurization additives is high. For example, when lime is used as a desulfurizer, when Ca / S=1, a desulfurization rate of 90% can be achieved, which is suitable for flue gas desulfurization in large coal-fired power plants. The demister is mainly composed of fixing devices such as corrugated blades, plates, and card strips. In wet desulfurization, the absorption tower is prone to produce "fog" with a particle size of 10-60 microns during operation. The "fog" not only contains water, but also dissolves sulfuric acid, sulfate, sulfur dioxide, etc., and also causes contamination and severe corrosion of fans, heat exchangers and flues. Therefore, the wet desulfurization process requires demisting for the absorption equipment, and the purified gas must be demisted before leaving the absorption tower.

[0003] Patent announcement number CN214075481U discloses a demister for wet desulfurization, including a treatment tower, both sides of the left and right bottom of the treatment tower are provided with smoke inlet pipes, both sides of the bottom of the treatment tower are provided with discharge pipes, two strip plates are fixed to the inner wall of the treatment tower, a plurality of corrugated plates are provided between the two strip plates, a cleaning chamber is provided in both side walls of the treatment tower, a rotating shaft is provided in the cleaning chamber, a driving mechanism connected to the rotating shaft is provided outside the treatment tower, and a cleaning mechanism for cleaning a plurality of corrugated plates is provided on the rotating shaft. The utility model can use a water pump to pump water in a water tank into a water chamber by setting a water pump mechanism and a cleaning mechanism, and then use a plurality of nozzles to wash the corrugated plates, and the waste water is discharged through the discharge pipe, and the cleaning can be completed without disassembly, saving a lot of time and manpower, and improving the desulfurization efficiency.

[0004] Although the prior art CN214075481U has many benefits during use, it still has the following problems: it needs to be driven and closed by electric means, which leads to high use cost of the equipment and high subsequent maintenance cost. Utility Model Content

[0005] The utility model aims to provide a closed-loop kiln tail flue gas wet desulfurization device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed-loop kiln tail flue gas wet desulfurization device, comprising a treatment tower, a connecting pipe, a water spray pipe and a connecting rod, wherein connecting pipes are installed on the upper ends of the outer walls on both sides of the treatment tower, and water spray pipes equidistantly distributed in parallel are inserted and installed on the outer wall of one side of the connecting pipe, and a support frame is installed on one side of the inner wall of the water spray pipe, and a movable hole is opened inside the support frame, and a connecting rod is movably installed inside the movable hole, a guide plate is installed on the outer wall of one end of the connecting rod, and a plug is installed on the outer wall of one side of the guide plate.

[0007] When using a closed-loop kiln tail flue gas wet desulfurization device in the technical solution, the flue gas enters the treatment tower through the ventilation pipe, and the water vapor inside the flue gas is defogged by the corrugated plate, the water droplets are discharged through the discharge pipe, and the cleaning liquid is sprayed out through the connecting pipe and the water spray pipe. The pressure of the liquid pushes the connecting rod and the plug to overcome the spring force and move, so that the cleaning liquid is sprayed on the outer wall of the corrugated plate, thereby achieving the purpose of cleaning the outer wall of the corrugated plate, and the sewage after cleaning is discharged through the discharge pipe.

[0008] Preferably, ventilation pipes are inserted and installed on the outer walls of both sides of the treatment tower, and the ventilation pipes are connected to the interior of the treatment tower. The flue gas enters the interior of the treatment tower through the ventilation pipes.

[0009] Preferably, discharge pipes are inserted and installed on the outer walls of both sides of the treatment tower, and the discharge pipes are connected to the inside of the treatment tower. The sewage inside the treatment tower is discharged through the discharge pipes.

[0010] Preferably, one side of the inner wall of the treatment tower is provided with equidistantly parallel corrugated plates, the corrugated plates being designed in a convex shape, and the water droplets inside the flue gas are demisted by the corrugated plates.

[0011] Preferably, a sealing gasket is fixed to the outer wall of one side of the plug, and the sealing gasket contacts the outer wall of the water spray pipe. The plug ensures the sealing between the plug and the water spray pipe through the sealing gasket, thereby achieving the purpose of blocking the water spray pipe.

[0012] Preferably, a spring is provided on an outer wall of one side of the connecting rod, and the connecting rod is elastically connected to the support frame through the spring. The spring force ensures the position stability of the connecting rod and the plug.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of reducing the cost of equipment use by arranging a water spray pipe, a connecting rod and a plug. The flue gas enters the interior of the treatment tower through the ventilation pipe, and the water vapor inside the flue gas is defogged by the corrugated plate, and the water droplets are discharged through the discharge pipe, and the cleaning liquid is sprayed out through the connecting pipe and the water spray pipe. The pressure of the liquid pushes the connecting rod and the plug to overcome the spring force and move, so that the cleaning liquid is sprayed on the outer wall of the corrugated plate, thereby achieving the purpose of cleaning the outer wall of the corrugated plate, and the sewage after cleaning is discharged through the discharge pipe, avoiding the use of electronic control equipment, reducing the cost of equipment use, and reducing subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the treatment tower structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the treatment tower structure of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of the water spray pipe structure of the utility model.

[0017] In the figure: 1. treatment tower; 11. ventilation pipe; 12. discharge pipe; 13. corrugated plate; 2. connecting pipe; 21. water spray pipe; 22. support frame; 23. movable hole; 24. connecting rod; 25. spring; 26. guide plate; 27. plug; 28. sealing gasket. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 , the utility model provides two embodiments:

[0020] Embodiment 1: A closed-loop kiln tail flue gas wet desulfurization device comprises a treatment tower 1, a connecting pipe 2, a water spray pipe 21 and a connecting rod 24. Connecting pipes 2 are installed at the upper ends of the outer walls on both sides of the treatment tower 1. The outer wall of one side of the connecting pipe 2 is plugged with equidistant and parallel water spray pipes 21. A support frame 22 is installed on one side of the inner wall of the water spray pipe 21. A movable hole 23 is opened inside the support frame 22. A connecting rod 24 is movably installed inside the movable hole 23. A guide plate 26 is installed on the outer wall of one end of the connecting rod 24, and a plug 27 is installed on the outer wall of one side of the guide plate 26.

[0021] Ventilation pipes 11 are inserted and installed on the outer walls of both sides of the treatment tower 1, and the ventilation pipes 11 are connected to the inside of the treatment tower 1. The flue gas enters the inside of the treatment tower 1 through the ventilation pipes 11.

[0022] Discharge pipes 12 are inserted and installed on the outer walls of both sides of the treatment tower 1, and the discharge pipes 12 are connected to the inside of the treatment tower 1. The sewage inside the treatment tower 1 is discharged through the discharge pipes 12.

[0023] One side of the inner wall of the treatment tower 1 is provided with equidistantly distributed corrugated plates 13, which are designed in a convex shape. The water droplets inside the flue gas are demisted by the corrugated plates 13, and the flue gas enters the treatment tower 1 through the ventilation pipe 11, and the water vapor inside the flue gas is demisted by the corrugated plates 13, and the water droplets are discharged through the discharge pipe 12.

[0024] Embodiment 2: A closed-loop kiln tail flue gas wet desulfurization device comprises a treatment tower 1, a connecting pipe 2, a water spray pipe 21 and a connecting rod 24. Connecting pipes 2 are installed at the upper ends of the outer walls on both sides of the treatment tower 1. The outer wall of one side of the connecting pipe 2 is plugged with equidistant and parallel water spray pipes 21. A support frame 22 is installed on one side of the inner wall of the water spray pipe 21. A movable hole 23 is opened inside the support frame 22. A connecting rod 24 is movably installed inside the movable hole 23. A guide plate 26 is installed on the outer wall of one end of the connecting rod 24, and a plug 27 is installed on the outer wall of one side of the guide plate 26.

[0025] Ventilation pipes 11 are inserted and installed on the outer walls of both sides of the treatment tower 1, and the ventilation pipes 11 are connected to the inside of the treatment tower 1. The flue gas enters the inside of the treatment tower 1 through the ventilation pipes 11.

[0026] Discharge pipes 12 are inserted and installed on the outer walls of both sides of the treatment tower 1, and the discharge pipes 12 are connected to the inside of the treatment tower 1. The sewage inside the treatment tower 1 is discharged through the discharge pipes 12.

[0027] One side of the inner wall of the treatment tower 1 is provided with equidistantly distributed corrugated plates 13, which are designed in a convex shape. Water droplets in the flue gas are demisted through the corrugated plates 13.

[0028] A sealing gasket 28 is fixed to the outer wall of one side of the plug 27, and the sealing gasket 28 contacts the outer wall of the water spray pipe 21. The plug 27 ensures the sealing performance with the water spray pipe 21 through the sealing gasket 28, thereby achieving the purpose of blocking the water spray pipe 21.

[0029] A spring 25 is provided on the outer wall of one side of the connecting rod 24, and the connecting rod 24 is elastically connected to the support frame 22 through the spring 25. The elastic force of the spring 25 ensures the position stability of the connecting rod 24 and the plug 27. The flue gas enters the interior of the treatment tower 1 through the ventilation pipe 11, and the water vapor inside the flue gas is defogged by the corrugated plate 13, and the water droplets are discharged through the discharge pipe 12. The cleaning liquid is sprayed out through the connecting pipe 2 and the water spray pipe 21. The pressure of the liquid pushes the connecting rod 24 and the plug 27 to overcome the elastic force of the spring 25 and move, so that the cleaning liquid is sprayed on the outer wall of the corrugated plate 13, achieving the purpose of cleaning the outer wall of the corrugated plate 13, and the sewage after cleaning is discharged through the discharge pipe 12, avoiding the use of electronic control equipment, reducing the use cost of the equipment, and reducing the subsequent maintenance cost.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A closed-loop kiln tail flue gas wet desulfurization device, comprising a treatment tower (1), a connecting pipe (2), a water spray pipe (21) and a connecting rod (24), characterized in that: A connecting pipe (2) is installed at the upper end of the outer wall of both sides of the treatment tower (1); a water spray pipe (21) equidistantly distributed in parallel is inserted and installed on the outer wall of one side of the connecting pipe (2); a support frame (22) is installed on one side of the inner wall of the water spray pipe (21); a movable hole (23) is opened inside the support frame (22); a connecting rod (24) is movably installed inside the movable hole (23); a guide plate (26) is installed on the outer wall of one end of the connecting rod (24); and a plug (27) is installed on the outer wall of one side of the guide plate (26).

2. A closed-loop kiln tail flue gas wet desulfurization device according to claim 1, characterized in that: Ventilation pipes (11) are inserted and installed on the outer walls of both sides of the treatment tower (1), and the ventilation pipes (11) are connected to the interior of the treatment tower (1).

3. A closed-loop kiln tail flue gas wet desulfurization device according to claim 1, characterized in that: Discharge pipes (12) are inserted and installed on the outer walls of both sides of the processing tower (1), and the discharge pipes (12) are connected to the interior of the processing tower (1).

4. A closed-loop kiln tail flue gas wet desulfurization device according to claim 1, characterized in that: One side of the inner wall of the treatment tower (1) is provided with equidistantly distributed parallel corrugated plates (13), and the corrugated plates (13) are designed in a convex shape.

5. A closed-loop kiln tail flue gas wet desulfurization device according to claim 1, characterized in that: A sealing gasket (28) is fixedly attached to the outer wall of one side of the plug (27), and the sealing gasket (28) is in contact with the outer wall of the water spray pipe (21).

6. A closed-loop kiln tail flue gas wet desulfurization device according to claim 1, characterized in that: A spring (25) is provided on an outer wall of one side of the connecting rod (24), and the connecting rod (24) is elastically connected to the support frame (22) via the spring (25).

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