A boiler flue gas desulfurization technology

Abstract

The present application belongs to the field of flue gas desulfurization, and particularly relates to a boiler flue gas desulfurization technology, which is used in cooperation with a boiler flue gas desulfurization equipment. The boiler flue gas desulfurization equipment comprises a tower body, a conical cylinder body is fixedly arranged at the lower half of the tower body, a fixed plate is fixedly arranged in the tower body, a desulfurization component is arranged on the fixed plate, an inner cylinder is fixedly connected to the upper side of the fixed plate, a mist eliminator is arranged on the inner cylinder, a tower cover is arranged at the upper end of the tower body, a gas outlet is arranged on the upper side of the mist eliminator, and an air inlet is arranged on the conical cylinder body. The reaction between flue gas and desulfurization liquid is enhanced, and meanwhile, the problem of different use degrees of the soft desulfurization hole belt rotating in a circulating manner is avoided, so that the soft desulfurization hole belt can maintain high-efficiency work for a long time.

Description

Technical Field

[0001] This invention belongs to the field of flue gas desulfurization, and particularly relates to a boiler flue gas desulfurization technology. Background Technology

[0002] Currently, most desulfurization technologies employ wet desulfurization, which requires an absorption tower. Common absorption towers, such as spray towers, plate towers, and packed towers, use multi-layer nozzle groups, perforated plates, and packing, respectively, for gas-liquid distribution. These devices suffer from problems such as insufficient reaction between the desulfurized flue gas and the desulfurization liquid, inconsistent use of perforated plates, and severe blockage at the initial contact point with the flue gas, all of which negatively impact desulfurization efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a boiler flue gas desulfurization technology that enhances the reaction between flue gas and desulfurization liquid. At the same time, the circulating soft desulfurization perforated belt avoids the problem of inconsistent usage and can maintain high efficiency for a long time.

[0004] The objective of this invention can be achieved through the following technical solution: a boiler flue gas desulfurization technology, in conjunction with a boiler flue gas desulfurization device, the boiler flue gas desulfurization device including a tower body, a conical cylinder fixedly provided in the lower half of the tower body, a fixed plate fixedly provided inside the tower body, a desulfurization component provided on the fixed plate, an inner cylinder fixedly connected to the upper side of the fixed plate, a demister placed on the inner cylinder, a tower cover provided at the upper end of the tower body, an air outlet provided on the upper side of the tower body above the demister, and an air inlet provided on the conical cylinder.

[0005] Preferably, a dust removal filter plate is fixedly installed inside the conical cylinder at the position above the air inlet.

[0006] Preferably, the desulfurization component includes a movable base plate with an opening at its center. A downward-opening spiral shell is fixed on the fixed plate. A soft desulfurization perforated strip is slidably disposed within the spiral shell. Half of the soft desulfurization perforated strip is located within the spiral shell, and the other half extends along the spiral line of the spiral shell after rotating 180 degrees. Half of the soft desulfurization perforated strip extending out of the spiral shell is located within the gap of the spiral shell. A sliding groove extending along the spiral direction of the soft desulfurization perforated strip is provided on the movable base plate. A limiting block is slidably disposed within the sliding groove and is fixedly connected to the soft desulfurization perforated strip. A vent connecting to the inner cylinder is provided at the outermost outlet of the spiral line of the spiral shell on the fixed plate.

[0007] Preferably, a plurality of sliding cylinders are fixedly provided on the fixed plate at the outer ring of the inner cylinder, and the output end of the sliding cylinder passes through the fixed plate and is connected to the movable base plate.

[0008] Preferably, two driven shafts are rotatably mounted on the movable base plate, and the driven shafts are located at the inflection points of the two spiral sections of the soft desulfurization pore belt.

[0009] Preferably, a heat-insulating box is fixedly installed on the lower end face of the movable base plate, and a drive motor is installed inside the heat-insulating box. The output end of the drive motor is connected to a drive shaft. The drive shaft is located at the inflection point where the soft desulfurization pore belt enters the spiral shell outside the spiral line. The drive shaft can drive the soft desulfurization pore belt to slide along the sliding groove.

[0010] Preferably, the movable base plate is provided with sealing strips evenly distributed on the sliding groove between the spiral shells, and two adjacent sealing strips along the spiral direction of the sliding groove are staggered on both sides of the soft desulfurization pore zone.

[0011] Preferably, the fixed plate is provided with multiple nozzles at equal intervals along the spiral direction of the soft desulfurization holes located between the spiral shells. The multiple nozzles are connected to a spiral desulfurization liquid pipe, one end of which extends out of the inner cylinder and tower body and connects to the external liquid supply module.

[0012] Preferably, the bottom of the conical cylinder is provided with a liquid outlet, which is connected to an external liquid supply module.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This invention avoids the problem of inconsistent application of traditional perforated plates by using a design of a soft desulfurization perforated belt with cyclic rotation, thereby improving work efficiency.

[0015] 2. It enhances the contact between the desulfurization liquid and the flue gas, thereby strengthening the reaction effect. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is the front view of the present invention;

[0019] Figure 4 for Figure 3 Sectional view at point AA;

[0020] Figure 5 for Figure 3 Sectional view at point BB;

[0021] Figure 6 for Figure 3 Isometric sectional view at point CC;

[0022] Figure 7This is a schematic diagram of the structure at the desulfurization liquid pipe.

[0023] Figure 8 This is a schematic diagram of the structure at the soft desulfurization pore zone;

[0024] Figure 9 for Figure 4 Enlarged view of a section at point D.

[0025] In the diagram: 1. Tower body; 2. Tower cover; 3. Conical cylinder; 4. Air inlet; 5. Liquid outlet; 6. Gas outlet; 7. Desulfurization liquid pipe; 8. Fixed plate; 9. Sliding cylinder; 10. Output end; 11. Movable base plate; 12. Nozzle; 13. Inner cylinder; 14. Demister; 15. Dust removal filter plate; 16. Through port; 17. Insulation box; 18. Air inlet; 19. Sliding groove; 20. Limiting block; 21. Soft desulfurization perforated strip; 22. Spiral shell; 23. Driven shaft; 24. Sealing strip; 25. Driven shaft. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] It should be noted that the directional terms such as "up" and "down" used in this article are in the context of... Figures 1 to 9 The directional terms used in this document, defined by their location in the diagram and their relative positions, are merely for clarity and convenience in illustrating the technical solution. It should be understood that the directional terms used herein should not limit the scope of protection claimed in this application.

[0028] like Figure 1-9 As shown, a boiler flue gas desulfurization technology is used in conjunction with a boiler flue gas desulfurization device. The boiler flue gas desulfurization device includes a tower body 1, a conical cylinder 3 fixedly mounted on the lower half of the tower body 1, a fixed plate 8 fixedly mounted inside the tower body 1, a desulfurization component mounted on the fixed plate 8, an inner cylinder 13 fixedly connected to the upper side of the fixed plate 8, a demister 14 mounted on the inner cylinder 13, a tower cover 2 at the upper end of the tower body 1, an air outlet 6 located above the demister 14 on the tower body 1, and an air inlet 4 on the conical cylinder 3. The demister 14 is a common technology in flue gas desulfurization and will not be described in detail.

[0029] As a further embodiment, a dust removal filter plate 15 is fixedly installed inside the conical cylinder 3, located above the air inlet 4. The dust removal filter plate 15 is prior art and will not be described in detail.

[0030] As a further embodiment, the desulfurization component includes a movable base plate 11 with an opening 16 at its center. A downward-opening spiral shell 22 is fixed on a fixed plate 8. A soft desulfurization perforated strip 21 is slidably disposed inside the spiral shell 22. Half of the soft desulfurization perforated strip 21 is located within the spiral shell 22, and the other half extends along the spiral line of the spiral shell 22 after rotating 180 degrees. Half of the soft desulfurization perforated strip 21 extending out of the spiral shell 22 is located within the gap of the spiral shell 22. A sliding groove 19 extending along the spiral direction of the soft desulfurization perforated strip 21 is provided on the movable base plate 11. A limiting block 20 is slidably disposed within the sliding groove 19 and is fixedly connected to the soft desulfurization perforated strip 21. A vent 18 communicating with the interior of the inner cylinder 13 is provided at the outermost outlet of the spiral line of the spiral shell 22 on the fixed plate 8.

[0031] As a further embodiment, a plurality of sliding cylinders 9 are fixedly provided on the fixed plate 8 at the outer ring of the inner cylinder 13, and the output end 10 of the sliding cylinder 9 passes through the fixed plate 8 and is connected to the movable base plate 11.

[0032] As a further embodiment, two driven shafts 23 are rotatably mounted on the movable base plate 11, and the driven shafts 23 are located at the inflection points of the two spiral sections of the soft desulfurization pore belt 21.

[0033] As a further embodiment, a heat insulation box 17 is fixedly installed on the lower end face of the movable base plate 11. A drive motor is installed inside the heat insulation box 17. The output end of the drive motor is connected to a drive shaft 25. The drive shaft 25 is located at the inflection point where the soft desulfurization hole belt 21 enters the spiral shell 22 outside the spiral line. The drive shaft 25 can drive the soft desulfurization hole belt 21 to slide along the sliding groove 19.

[0034] As a further embodiment, sealing strips 24 are equidistantly distributed on the sliding groove 19 located between the spiral shells 22 on the movable base plate 11, and two adjacent sealing strips 24 are staggered on both sides of the soft desulfurization hole zone 21 along the spiral direction of the sliding groove 19.

[0035] As a further embodiment, a plurality of nozzles 12 are evenly spaced along the spiral direction of the soft desulfurization perforated strip 21 located between the spiral shells 22 on the fixed plate 8. These nozzles are connected to a spiral desulfurization liquid pipe 7, one end of which extends out of the inner cylinder 13 and the tower body 1, connecting to an external liquid supply module. The liquid supply module is capable of supplying desulfurization liquid into the external desulfurization liquid pipe 7 and recovering the desulfurized liquid; this is prior art and will not be elaborated further. The nozzles 12 are positioned above the soft desulfurization perforated strip 21, which slides between the spiral shells 22, and spray desulfurization liquid into contact with the soft desulfurization perforated strip 21.

[0036] As a further embodiment, the bottom of the conical cylinder 3 is provided with a liquid outlet 5, which is connected to an external liquid supply module.

[0037] In operation, the drive motor is started, which drives the drive shaft 25 to rotate, thereby causing the soft desulfurization perforated belt 21 to rotate along the sliding groove 19. At the same time, the external liquid supply module outputs desulfurization liquid into the desulfurization liquid pipe 7. The desulfurization liquid is sprayed through the nozzle 12 into the space between the spiral shells 22, contacting the soft desulfurization perforated belt 21. The flue gas enters through the flue gas inlet 4, passes through the dust removal filter plate 15, and enters the space between the spiral shells 22 through the through-hole 16. Since the flue gas enters through the through-hole 16... The flue gas is discharged from the vent 18 to the outside of the spiral shell 22, and the desulfurization liquid is sprayed out from the nozzle 12 and falls from the opening 16. The flue gas and the desulfurization liquid are in a convection state. Furthermore, since the application has spaced sealing strips 24, the flue gas and the desulfurization liquid flow along the gap between the soft desulfurization perforated strip 21 and the spiral shell 22 on one side. The flue gas and the desulfurization liquid need to repeatedly pass through the holes on the soft desulfurization perforated strip 21, thereby strengthening the reaction between the flue gas and the desulfurization liquid and achieving more efficient desulfurization.

[0038] The desulfurization liquid falls into the inlet 16. The soft desulfurization perforated strip 21 is located at the air inlet. Under the action of wind force, the impurities in the perforations of the soft desulfurization perforated strip 21 are flushed out by the gas and liquid and enter the inlet 16 together.

[0039] The desulfurized liquid falls from the inlet 16, passes through the dust removal filter plate 15 and enters the bottom of the conical cylinder 3, and is then recovered to the liquid supply module through the outlet 5.

[0040] When the soft desulfurization perforated belt 21 accumulates a lot of impurities, the output end 10 of the control sliding cylinder 9 extends, driving the movable base plate 11 to move down into the conical cylinder 3, separating the soft desulfurization perforated belt 21 from the spiral shell 22. At the same time, the liquid supply module introduces cleaning liquid into the desulfurization liquid pipe 7. The cleaning liquid sprays out from the nozzle 12 and washes the inner wall of the spiral shell 22. Then it falls down to wash the soft desulfurization perforated belt 21. The washing liquid falls from the periphery of the movable base plate 11 into the dust removal filter plate 15 and then into the bottom of the conical cylinder 3. After the cleaning is completed, the output end 10 of the sliding cylinder 9 moves up to return to the initial state and resumes operation.

[0041] Correspondingly, a door can be opened on the conical cylinder 3 to facilitate cleaning of the surface of the dust removal filter plate 15.

[0042] The above description is merely a preferred embodiment of this application. Although this application has disclosed preferred embodiments above, it is not intended to limit this application. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this application using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of this application. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this application without departing from the content of the technical solutions of this application shall still fall within the protection scope of the technical solutions of this application.

Claims

1. A boiler flue gas desulfurization device, comprising a tower body (1), a conical cylinder (3) fixedly provided in the lower half of the tower body (1), a fixed plate (8) fixedly provided inside the tower body (1), a desulfurization component provided on the fixed plate (8), an inner cylinder (13) fixedly connected to the upper side of the fixed plate (8), a demister (14) provided above the inner cylinder (13), a tower cover (2) provided at the upper end of the tower body (1), an air outlet (6) provided on the upper side of the tower body (1) above the demister (14), and an air inlet (4) provided on the conical cylinder (3); The desulfurization component includes a movable base plate (11) with an opening (16) at its center. A downward-opening spiral shell (22) is fixed on the fixed plate (8). A soft desulfurization perforated strip (21) is slidably disposed inside the spiral shell (22). Half of the soft desulfurization perforated strip (21) is located within the spiral shell (22), and the other half extends along the spiral line of the spiral shell (22) after rotating 180 degrees. Half of the spiral shell (22) is located in the gap of the spiral shell (22). The movable base plate (11) is provided with a sliding groove (19) extending along the spiral direction of the soft desulfurization hole band (21). A limiting block (20) is slidably provided in the sliding groove (19). The limiting block (20) is fixedly connected to the soft desulfurization hole band (21). The fixed plate (8) is located at the outermost outlet of the spiral line of the spiral shell (22) and has a vent (18) that connects to the inside of the inner cylinder (13). The lower end face of the movable base plate (11) is fixedly provided with a heat insulation box (17). The heat insulation box (17) is provided with a drive motor. The output end of the drive motor is connected to a drive shaft (25). The drive shaft (25) is located at the inflection point where the soft desulfurization hole belt (21) enters the spiral shell (22) outside the spiral line. The drive shaft (25) can drive the soft desulfurization hole belt (21) to slide along the sliding groove (19). The fixed plate (8) is provided with multiple nozzles (12) at equal intervals along the spiral direction of the soft desulfurization hole strip (21) located between the spiral shells (22). The multiple nozzles are connected to the spiral desulfurization liquid pipe (7). One end of the desulfurization liquid pipe (7) extends out of the inner cylinder (13) and the tower body (1) and connects to the external liquid supply module.

2. The boiler flue gas desulfurization equipment according to claim 1, characterized in that, The conical cylinder (3) is fixedly equipped with a dust removal filter plate (15) located above the air inlet (4).

3. The boiler flue gas desulfurization equipment according to claim 1, characterized in that, Multiple sliding cylinders (9) are fixedly provided on the fixed plate (8) on the outer ring of the inner cylinder (13). The output end (10) of the sliding cylinder (9) passes through the fixed plate (8) and is connected to the movable base plate (11).

4. The boiler flue gas desulfurization equipment according to claim 1, characterized in that, Two driven shafts (23) are rotatably mounted on the movable base plate (11), and the driven shafts (23) are located at the inflection points of the two spiral lines of the soft desulfurization pore belt (21).

5. The boiler flue gas desulfurization equipment according to claim 1, characterized in that, On the movable base plate (11), sealing strips (24) are equidistantly distributed on the sliding groove (19) between the spiral shells (22). Two adjacent sealing strips (24) along the spiral direction of the sliding groove (19) are staggered on both sides of the soft desulfurization pore zone (21).

6. The boiler flue gas desulfurization equipment according to claim 1, characterized in that, The bottom of the conical cylinder (3) is provided with a liquid outlet (5), which is connected to an external liquid supply module.

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