A desulfurization tower for flue gas treatment

Abstract

The utility model discloses a desulfurization tower for flue gas treatment, which belongs to the technical field of flue gas treatment, and comprises a desulfurization tower body, a desulfurization box is fixedly connected to the side of the desulfurization tower body, one end of the desulfurization box is fixedly connected to an air inlet pipe, one end of the air inlet pipe extends to the inner cavity of the desulfurization tower body, the other end of the desulfurization box is fixedly connected to a ventilation pipe, the end of the ventilation pipe is fixedly connected to a filter box, and the inner wall of the filter box is fixedly sleeved with a filter net. In the utility model, smoke dust in the flue gas is filtered by the filter net in the filter box to prevent the smoke dust from entering the interior of the desulfurization tower body, and the flue gas is first desulfurized by the iron oxide desulfurizer in the inner cavity of the desulfurization box, and the flue gas is secondly desulfurized by the desulfurization liquid in the desulfurization tower body, and the sulfide in the flue gas is separated by two different desulfurization methods, which has good practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, and in particular to a desulfurization tower used for flue gas treatment. Background Art

[0002] The desulfurization tower is a tower-type equipment for desulfurizing industrial waste gas. It is widely used in flue gas desulfurization in the domestic coal-fired industry. The desulfurization tower can prevent the discharge of sulfur-containing flue gas and cause atmospheric pollution. The gas desulfurized by the desulfurization tower is harmless to the environment and is more environmentally friendly.

[0003] After searching, the utility model patent with announcement number CN210674774U discloses a flue gas desulfurization tower, which includes a tower body, a filling block is arranged at the bottom of the inner cavity of the tower body, two air inlet pipes are arranged in the filling block, the air inlet pipe is clamped on the right side of the tower body, and the top of the air inlet pipe is connected with the lower surface of the diffuser plate; the flue gas desulfurization tower directly passes the flue gas into the desulfurization chamber through the air inlet pipe through the mutual cooperation between the air inlet pipe, the diffuser plate, the filling block, the bearing plate, the nozzle, the lifting pump, the water pump, the liquid inlet pipe and the liquid outlet pipe. At this time, the flue gas will be moved to the desulfurization chamber in a relatively dispersed manner through the diffuser plate, and at the same time, the lifting pump sprays the desulfurization liquid through the nozzle, and the flue gas coming out of the desulfurization chamber will be desulfurized for the second time by the sprayed desulfurization liquid. The valve is opened to release the desulfurization liquid in the desulfurization chamber, and the water pump is controlled to pass the new desulfurization liquid into the desulfurization chamber, which can ensure better desulfurization efficiency of the flue gas and make the practicality of the device.

[0004] However, the above patents still have the following shortcomings: although desulfurization is carried out for many times, the desulfurization is carried out by contacting the flue gas with the desulfurization liquid, and the desulfurization effect is not good; and the flue gas often contains smoke dust, which is easy to adhere to the diffuser plate after entering the desulfurization tower, making it difficult to clean, and will cause blockage between multiple diffuser plates. For this reason, we propose a desulfurization tower for flue gas treatment. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a desulfurization tower for flue gas treatment.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A desulfurization tower for flue gas treatment, comprising a desulfurization tower body, a desulfurization box fixedly connected to the side of the desulfurization tower body, one end of the desulfurization box fixedly connected to an air inlet pipe, one end of the air inlet pipe extending to the inner cavity of the desulfurization tower body, the other end of the desulfurization box fixedly connected to a ventilation pipe, the end of the ventilation pipe fixedly connected to a filter box, the inner wall of the filter box fixedly sleeved with a filter net, the filter box is provided with a cleaning mechanism, the end face of the filter box fixedly connected to an air guide pipe, the inner cavity of the desulfurization box fixedly sleeved with two material retaining nets, the inner cavity of the desulfurization box is placed with iron oxide desulfurizer, and the front of the desulfurization box is hinged with a second sealing door.

[0008] As a preferred solution of the utility model, the cleaning mechanism includes ash boxes arranged on both sides of the filter box, a reciprocating screw is rotatably connected between the two ash boxes, the reciprocating screw penetrates the inner cavity of the filter box, a scraper is threadedly sleeved on the outer side of the reciprocating screw, a servo motor is fixedly installed on the outer side of one of the ash boxes, and the output shaft of the servo motor is connected to the end of the reciprocating screw.

[0009] As a preferred solution of the utility model, an air outlet pipe is arranged on the top of the desulfurization tower body, and a drain valve is fixedly connected to the side of the desulfurization tower body.

[0010] As a preferred solution of the utility model, elastic tubes are fixedly connected to both sides of the scraper, the ends of the two elastic tubes are respectively connected to the inner walls of the two ash storage boxes, and the elastic tube sleeves are arranged in the inner cavity of the reciprocating screw.

[0011] As a preferred solution of the utility model, a first sealing door is hinged on the outer side of the ash storage box.

[0012] As a preferred solution of the utility model, the end surface of the scraper is respectively in contact with the end surface of the filter screen and the inner wall of the ash storage box.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, smoke dust in the flue gas is filtered by the filter net in the filter box to prevent the smoke dust from entering the interior of the desulfurization tower body, and the flue gas is subjected to the first desulfurization treatment by the iron oxide desulfurizer in the inner cavity of the desulfurization box, and the flue gas is subjected to the second desulfurization treatment by the desulfurization liquid in the desulfurization tower body. The sulfide in the flue gas is separated by two different desulfurization methods, which has good practicality.

[0015] (2) In the utility model, a servo motor is used to drive the reciprocating screw to rotate, and the scraper is driven to move back and forth along the axial direction of the reciprocating screw through the threaded cooperation between the reciprocating screw and the scraper. The reciprocating screw is used to scrape the smoke on the filtering surface of the filter screen, and the smoke is collected in the inner cavity of the ash box, thereby ensuring the filtering effect of the filter screen and improving the working quality of the desulfurization tower used for flue gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the desulfurization box of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the filter box of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the desulfurization box of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Desulfurization tower body; 2. Desulfurization box; 3. Ventilation pipe; 4. Inlet pipe; 5. Filter box; 6. Iron oxide desulfurizer; 7. Material retaining net; 8. Second sealing door; 9. Ash cleaning mechanism; 10. Filter net; 11. Ash storage box; 12. Reciprocating screw rod; 13. Scraper; 14. Servo motor; 15. Elastic tube; 16. First sealing door; 17. Air guide pipe; 18. Air outlet pipe; 19. Drain valve. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-4 A desulfurization tower for flue gas treatment comprises a desulfurization tower body 1, a desulfurization box 2 is fixedly connected to the side of the desulfurization tower body 1, one end of the desulfurization box 2 is fixedly connected to an air inlet pipe 4, one end of the air inlet pipe 4 extends to the inner cavity of the desulfurization tower body 1, the other end of the desulfurization box 2 is fixedly connected to a ventilation pipe 3, the end of the ventilation pipe 3 is fixedly connected to a filter box 5, the inner wall of the filter box 5 is fixedly sleeved with a filter screen 10, a dust cleaning mechanism 9 is provided on the filter box 5, an end face of the filter box 5 is fixedly connected with an air guide pipe 17, the inner cavity of the desulfurization box 2 is fixedly sleeved with two material retaining nets 7, an iron oxide desulfurizer 6 is placed in the inner cavity of the desulfurization box 2, and a second sealing door 8 is hinged on the front of the desulfurization box 2.

[0027] In this embodiment, two retaining nets 7 are used to limit the iron oxide desulfurizer 6 so that the iron oxide desulfurizer 6 can only be located in the inner cavity of the desulfurization box 2. The iron oxide desulfurizer 6 can be replaced by opening the second sealing door 8. In addition, the internal structure of the desulfurization tower body 1 is a spray-type desulfurization, which is a prior art. Desulfurization is carried out by reacting the desulfurization liquid with sulfides in the flue gas, wherein the desulfurization liquid can be lime, limestone and an alkaline solution prepared with a calcareous agent.

[0028] For details, please refer to Figure 3 and Figure 4 The cleaning mechanism 9 includes ash boxes 11 arranged on both sides of the filter box 5, a reciprocating screw 12 is rotatably connected between the two ash boxes 11, the reciprocating screw 12 passes through the inner cavity of the filter box 5, and a scraper 13 is threadedly sleeved on the outer side of the reciprocating screw 12. A servo motor 14 is fixedly installed on the outer side of one of the ash boxes 11, and the output shaft of the servo motor 14 is connected to the end of the reciprocating screw 12.

[0029] In this embodiment, the end surface of the filter screen 10 fits the inner wall of the ash box 11 , ensuring that the scraper 13 can smoothly push the smoke and dust filtered by the end surface of the filter screen 10 into the inner cavity of the ash box 11 .

[0030] For details, please refer to Figure 1An air outlet pipe 18 is provided on the top of the desulfurization tower body 1 , and a drain valve 19 is fixedly connected to the side of the desulfurization tower body 1 .

[0031] In this embodiment, the flue gas after spray desulfurization in the desulfurization tower body 1 is discharged through the outlet pipe 18, and the desulfurization liquid in the desulfurization tower body 1 is discharged through the drain valve 19.

[0032] For details, please refer to Figure 3 and Figure 4 Elastic tubes 15 are fixedly connected to both sides of the scraper 13 , and the ends of the two elastic tubes 15 are connected to the inner walls of the two ash storage boxes 11 , respectively. The elastic tubes 15 are sleeved in the inner cavity of the reciprocating screw rod 12 .

[0033] In this embodiment, the outer side of the reciprocating screw 12 is protected by the elastic tube 15 to prevent smoke in the smoke from adhering to the reciprocating screw 12 .

[0034] For details, please refer to Figure 2 A first sealing door 16 is hinged on the outer side of the ash box 11 .

[0035] In this embodiment, the smoke and dust in the ash box 11 is cleaned by opening the first sealing door 16 .

[0036] For details, please refer to Figure 4 The end faces of the scraper 13 are respectively in contact with the end face of the filter screen 10 and the inner wall of the ash storage box 11.

[0037] In this embodiment, the end surface of the filter screen 10 and the inner wall of the ash storage box 11 are used to limit the scraper 13 so that the scraper 13 can only move along the axial direction of the reciprocating screw rod 12 .

[0038] Working principle: When in use, firstly, the flue gas to be treated is introduced into the inner cavity of the filter box 5 through the air guide pipe 17, and the smoke dust in the flue gas is filtered through the filter screen 10 in the inner cavity of the filter box 5. The filtered flue gas is introduced into the desulfurization box 2 through the ventilation pipe 3, and the iron oxide desulfurizer 6 in the inner cavity of the desulfurization box 2 is used to perform the first desulfurization treatment on the flue gas. The treated flue gas is introduced into the desulfurization tower body 1 through the air inlet pipe 4, and the desulfurization liquid in the desulfurization tower body 1 and the sulfide in the flue gas are used for the second desulfurization treatment. The treated flue gas is discharged from the outlet. The air is discharged through the air pipe 18, and then the servo motor 14 is used to drive the reciprocating screw 12 to rotate. The threaded cooperation between the reciprocating screw 12 and the scraper 13 drives the scraper 13 to move along the axial direction of the reciprocating screw 12, and the smoke filtered on the filtering surface of the scraper 13 and the filter 10 is scraped into the inner cavity of the ash box 11 and collected, so as to realize the processing of the smoke filtered on the filtering surface of the filter 10 and ensure the filtering effect of the filter 10. Finally, the first sealing door 16 is opened to process the smoke in the ash box 11.

[0039] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A desulfurization tower for flue gas treatment, comprising a desulfurization tower body (1), characterized in that: A desulfurization box (2) is fixedly connected to the side of the desulfurization tower body (1), one end of the desulfurization box (2) is fixedly connected to an air intake pipe (4), one end of the air intake pipe (4) extends to the inner cavity of the desulfurization tower body (1), the other end of the desulfurization box (2) is fixedly connected to a ventilation pipe (3), the end of the ventilation pipe (3) is fixedly connected to a filter box (5), the inner wall of the filter box (5) is fixedly sleeved with a filter net (10), a dust cleaning mechanism (9) is provided on the filter box (5), the end face of the filter box (5) is fixedly connected to an air guide pipe (17), the inner cavity of the desulfurization box (2) is fixedly sleeved with two material retaining nets (7), the inner cavity of the desulfurization box (2) is provided with an iron oxide desulfurizer (6), and the front of the desulfurization box (2) is hinged with a second sealing door (8).

2. A desulfurization tower for flue gas treatment according to claim 1, characterized in that: The ash cleaning mechanism (9) comprises ash storage boxes (11) arranged on both sides of the filter box (5), a reciprocating screw (12) is rotatably connected between the two ash storage boxes (11), the reciprocating screw (12) passes through the inner cavity of the filter box (5), a scraper (13) is threadedly sleeved on the outer side of the reciprocating screw (12), a servo motor (14) is fixedly installed on the outer side of one of the ash storage boxes (11), and the output shaft of the servo motor (14) is connected to the end of the reciprocating screw (12).

3. A desulfurization tower for flue gas treatment according to claim 1, characterized in that: An air outlet pipe (18) is provided at the top of the desulfurization tower body (1), and a liquid discharge valve (19) is fixedly connected to the side of the desulfurization tower body (1).

4. A desulfurization tower for flue gas treatment according to claim 2, characterized in that: Elastic tubes (15) are fixedly connected to both sides of the scraper (13), and the ends of the two elastic tubes (15) are respectively connected to the inner walls of the two ash storage boxes (11). The elastic tubes (15) are sleeved in the inner cavity of the reciprocating screw rod (12).

5. A desulfurization tower for flue gas treatment according to claim 2, characterized in that: A first sealing door (16) is hingedly connected to the outer side of the ash storage box (11).

6. A desulfurization tower for flue gas treatment according to claim 2, characterized in that: The end surface of the scraper (13) is respectively in contact with the end surface of the filter screen (10) and the inner wall of the ash storage box (11).

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