Flow guide and uniform distribution device for flue gas at inlet of desulfurizing tower

Abstract

The utility model relates to the technical field of desulfurizing towers, and provides a desulfurizing tower inlet flue gas flow guide and uniform distribution device which comprises a flue gas pipe, a flow guide pipe, a flow equalizing pore plate I, a flow equalizing pore plate II, a separation base, a driving part, a horizontal bevel gear and a horizontal bevel gear, the flow guide pipe is fixed above the flue gas pipe, the flow guide pipe is a trumpet-shaped pipeline with a small upper part and a large lower part, the lower edge of the flow guide pipe is tightly attached to the inner wall of the desulfurizing tower, the flow guide pipe can prevent industrial flue gas from flowing along the wall, the flow equalizing pore plate I is fixedly connected to an upper outlet of the pipeline of the flow guide pipe, and a plurality of flue gas through holes are formed in the flow equalizing pore plate I; and industrial flue gas passes through the plurality of flue gas through holes. By means of the technical scheme, the problems that in the prior art, a non-uniform flow field may cause part of flue gas to flow along the wall, effective contact between a desulfurizing agent and the flue gas is reduced, and the desulfurization efficiency is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, specifically to a desulfurization tower inlet flue gas diversion and distribution device. Background Technology

[0002] A desulfurization tower is a tower-type device used to treat industrial flue gas for desulfurization. Desulfurization involves the chemical absorption of sulfur from the flue gas within the tower. During operation, industrial flue gas enters the tower through the inlet. A desulfurization slurry circulation pump draws the slurry from the bottom of the tower to the top, where it is sprayed out through a spray system to react rapidly with the flue gas, achieving the desulfurization purpose.

[0003] However, in actual use, the inlet flue of the desulfurization tower in industry is usually quite long and has many bends, which causes the flue gas flow direction to change frequently. This results in uneven distribution of flue gas velocity. The uneven flow field may cause some flue gas to flow along the wall, reducing the effective contact between the desulfurizing agent and the flue gas and affecting the desulfurization efficiency. Utility Model Content

[0004] This invention proposes a flue gas flow distribution device at the inlet of a desulfurization tower to solve the problem in the prior art where uneven flow fields may cause some flue gas to flow along the wall, reducing the effective contact between the desulfurizing agent and the flue gas and affecting the desulfurization efficiency.

[0005] The technical solution of this utility model is as follows: a flue gas diversion and distribution device for desulfurization tower inlet, including a flue gas pipe, a diversion pipe, a first diversion orifice plate, a second diversion orifice plate, a dividing base, a driving component, a horizontal bevel gear, and a horizontal bevel gear.

[0006] A flue gas pipe penetrates the wall of the desulfurization tower, extending into the tower and curving downwards. A guide pipe is fixed above the flue gas pipe; the guide pipe is a funnel-shaped pipe, wider at the bottom and narrower at the top, with its lower edge tightly fitted against the inner wall of the desulfurization tower to prevent industrial flue gas from adhering to the wall. A flow equalization orifice plate is fixedly connected to the outlet of the guide pipe, and has several flue gas through-holes through which industrial flue gas passes. A separator base is fixed between the desulfurization slurry at the bottom of the desulfurization tower and the flue gas pipe, and has several slurry through-holes to allow the desulfurization slurry flowing down from above the desulfurization tower to pass through. The slurry is collected at the bottom of the desulfurization tower through the slurry through-hole. The driving component is fixed outside the desulfurization tower. The horizontal bevel gear is mounted on the partition base through a rotating shaft. The vertical bevel gear meshes with the horizontal bevel gear. The vertical bevel gear rotates coaxially with the driving component. The flow equalization plate two rotates coaxially at the top of the horizontal bevel gear. The flow equalization plate two is close to the flow equalization plate one and also has several flue gas through-holes. The driving component is used to drive the vertical bevel gear, thereby enabling the flow equalization plate two to rotate. When the flow equalization plate two rotates, it blocks the number of flue gas through-holes of the flow equalization plate one, thereby evenly distributing the flue gas in the upper part of the guide pipe.

[0007] Preferably, it also includes several vertical flow channels. Several vertical flow channels are opened at equal angles at the bottom of the inner wall of the desulfurization tower and extend along the inner wall of the desulfurization tower to the top of the guide pipe, so that when the desulfurization slurry flows to the inner wall of the desulfurization tower, it can flow along the vertical flow channels to the bottom of the desulfurization tower.

[0008] To prevent the desulfurization slurry from accumulating on the upper surface of the guide pipe, several guide grooves are also included. Several guide grooves are opened on the upper surface of the guide pipe and extend to the inner wall of the desulfurization tower. Several guide grooves are in contact with a vertical flow channel, so that when the desulfurization slurry flows above the guide pipe, it can flow along the guide grooves and the vertical flow channel to the bottom of the desulfurization tower.

[0009] To reduce the frequency of cleaning the bevel gears, a protective cover is also included, which is installed on the horizontal bevel gear and the vertical bevel gear to prevent contamination by industrial flue gas and desulfurization slurry.

[0010] Preferably, it also includes a diffuser bell mouth, installed at the outlet of the flue gas pipe.

[0011] In order to observe the desulfurization situation inside the desulfurization tower and the uniformity of industrial flue gas, a transparent observation port is also included, which is installed on the desulfurization tower.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] In this invention, industrial flue gas enters the desulfurization tower and flows through a guide pipe to prevent it from adhering to the wall and instead flows towards the central area. The flow uniformity of the industrial flue gas is controlled by the number of flue gas through holes in the first flow uniformity plate, which is blocked by the second flow uniformity plate. After passing through the flue gas through holes, the industrial flue gas reacts rapidly with the desulfurization slurry sprayed from the spraying device above. Compared with the prior art, an uneven flow field may cause some flue gas to adhere to the wall and affect the desulfurization efficiency. In this invention, the guide pipe, the first flow uniformity plate, and the second flow uniformity plate prevent the flue gas from adhering to the wall and improve the desulfurization efficiency. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point B in the middle;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the exploded structure;

[0018] Figure 4 This utility model Figure 1 A top-down view of the structure without the top;

[0019] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the picture:

[0021] 1. Desulfurization tower; 2. Flue gas pipe; 3. Flow guide pipe; 4. Flow equalization orifice plate one; 5. Separator base; 6. Drive component; 7. Horizontal bevel gear; 8. Vertical bevel gear; 9. Flow equalization orifice plate two; 10. Spray device; 101. Vertical flow channel; 201. Flow guide channel; 301. Protective cover; 401. Flow diffuser bell mouth; 501. Transparent observation port. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1 to 5As shown in this embodiment, a flue gas flow distribution device at the inlet of a desulfurization tower 1 includes a flue gas pipe 2, a flow distribution pipe 3, a flow distribution orifice plate 4, a flow distribution orifice plate 9, a partition base 5, a driving component 6, a horizontal bevel gear 7, and a vertical bevel gear 8.

[0024] Flue gas pipe 2 penetrates the wall of desulfurization tower 1, extending into the tower and curving downwards. A guide pipe 3 is fixed above flue gas pipe 2. Guide pipe 3 is a funnel-shaped pipe, wider at the bottom and narrower at the top. The lower edge of guide pipe 3 is tightly fitted against the inner wall of desulfurization tower 1, preventing industrial flue gas from flowing along the wall. A flow equalization orifice plate 4 is fixedly connected to the outlet of guide pipe 3. The orifice plate 4 has several flue gas through-holes through which industrial flue gas passes. A separating base 5 is fixed between the desulfurization slurry at the bottom of desulfurization tower 1 and flue gas pipe 2. The separating base 5 has several slurry through-holes, allowing slurry to flow down from above desulfurization tower 1. The desulfurization slurry is collected at the bottom of the desulfurization tower 1 through the slurry through hole. The driving component 6 is fixed outside the desulfurization tower 1. The horizontal bevel gear 7 is mounted on the partition base 5 through the rotating shaft. The vertical bevel gear 8 meshes with the horizontal bevel gear 7. The vertical bevel gear 8 rotates coaxially with the driving component 6. The flow equalization plate 2 9 rotates coaxially at the top of the horizontal bevel gear 7. The flow equalization plate 2 9 is close to the flow equalization plate 4 and also has several flue gas through holes. The driving component 6 is used to drive the vertical bevel gear 8, so that the flow equalization plate 2 9 can rotate. When the flow equalization plate 2 9 rotates, it blocks the number of flue gas through holes of the flow equalization plate 4, thereby evenly distributing the flue gas in the upper part of the guide pipe 3.

[0025] After exiting the flue gas pipe 2, the industrial flue gas continues to rise. The lower edge of the guide pipe 3 blocks the flue gas flowing against the inner wall of the desulfurization tower 1, forcing it to flow towards the central area. The driving component 6 can be any type of motor or cylinder. In this embodiment, a stepper motor is selected. The stepper motor drives the gear to rotate, which in turn drives the flow equalization orifice plate 9 to rotate. When the industrial flue gas at the upper outlet of the guide pipe 3 is well distributed, the flue gas passages on the flow equalization orifice plate 4 are not blocked. If the industrial flue gas is not well distributed, most of the flue gas passages above the flow equalization orifice plate can be blocked. After waiting for a while to allow the industrial flue gas to become uniform, the obstruction of the flue gas passages on the flow equalization orifice plate 4 is reduced. The automatic rotation angle and rotation time of the stepper motor can be set according to the actual situation to achieve automated control of the flue gas distribution.

[0026] Preferably, it also includes a plurality of vertical flow channels 101. The bottom of the inner wall of the desulfurization tower 1 is provided with a plurality of vertical flow channels 101 at equal angles, and extends along the inner wall of the desulfurization tower 1 to the top of the guide pipe 3, so that when the desulfurization slurry flows to the inner wall of the desulfurization tower 1, it can flow along the vertical flow channels 101 to the bottom of the desulfurization tower 1.

[0027] To prevent the desulfurization slurry from accumulating on the upper surface of the guide pipe 3, several guide channels 201 are also included. Several guide channels 201 are opened on the upper surface of the guide pipe 3 and extend to the inner wall of the desulfurization tower 1. Several guide channels 201 are in contact with a vertical flow channel 101, so that when the desulfurization slurry flows to the top of the guide pipe 3, it can flow along the guide channels 201 and the vertical flow channel 101 to the bottom of the desulfurization tower 1.

[0028] After the industrial flue gas rises evenly through the flue gas orifice, the desulfurization slurry sprayed by the spray device 10 above the desulfurization tower 1 will react quickly with the industrial flue gas. Most of the desulfurization slurry will be collected at the bottom of the desulfurization tower 1 through the flue gas orifice and the slurry orifice on the partition base 5. However, some desulfurization slurry will remain on the upper end face of the guide pipe 3. Therefore, this part of the desulfurization slurry will be collected at the bottom of the desulfurization tower 1 again through the guide channel 201 and the vertical flow channel 101.

[0029] like Figure 5 As shown, to reduce the frequency of cleaning the bevel gears, a protective cover 301 is also included, which is installed on the horizontal bevel gear 7 and the vertical bevel gear 8 to prevent contamination from industrial flue gas and desulfurization slurry. Since both industrial flue gas and desulfurization slurry are corrosive, a protective cover 301 is added to protect the vertical bevel gear 8 and the horizontal bevel gear 7.

[0030] Preferably, it also includes a diffuser bell mouth 401, which is installed at the outlet of the flue gas pipe 2. Industrial flue gas also contains a large amount of dust, and the dust will form scale when it combines with the desulfurization slurry. Therefore, a diffuser bell mouth 401 is added to the flue gas pipe 2 to reduce the situation where scale blocks the outlet of the flue gas pipe 2.

[0031] In order to observe the desulfurization situation inside the desulfurization tower 1 and the uniformity of industrial flue gas, a transparent observation port 501 is also included, which can directly observe the scale buildup and desulfurization situation inside the desulfurization tower 1.

[0032] Working principle: When the desulfurization tower 1 is working normally, industrial flue gas enters the desulfurization tower 1 through the flue gas pipe 2. After the industrial flue gas rises, the industrial flue gas flowing along the inner wall of the desulfurization tower 1 is guided to the middle area by the lower edge of the guide pipe 3. The stepper motor rotates, which drives the vertical bevel gear 8 to mesh with the horizontal bevel gear 7, and then drives the flow equalization plate 9 to rotate. After adjusting the flow equalization state of the industrial flue gas, the industrial flue gas rises through the flue gas through hole and reacts rapidly with the sprayed desulfurization slurry, and finally is discharged from the desulfurization tower 1.

[0033] Most of the desulfurization slurry after the reaction is collected at the bottom of the desulfurization tower 1 through the flue gas passage and the slurry passage. Some of the desulfurization slurry remains on the guide pipe 3 and is collected at the bottom of the desulfurization tower 1 through the guide channel 201 and the vertical flow channel 101. The entire process can be observed through the transparent observation port 501 to observe the scale buildup inside the desulfurization tower 1 and the desulfurization situation.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A desulfurization tower inlet flue gas guide uniform distribution device applied to a desulfurization tower (1), characterized in that, include: The flue gas pipe (2) penetrates the tower wall of the desulfurization tower (1) and extends into the tower, bending downwards; The guide pipe (3) is fixed above the flue gas pipe (2). The guide pipe (3) is a funnel-shaped pipe with a smaller top and a larger bottom. The lower edge of the guide pipe (3) is tightly fitted to the inner wall of the desulfurization tower (1). A flow equalization orifice plate (4) is fixedly connected to the outlet of the guide pipe (3). The flow equalization orifice plate (4) has several flue gas through holes, through which industrial flue gas passes. A partition base (5) is fixed between the desulfurization slurry at the bottom of the desulfurization tower (1) and the flue gas pipe (2). The partition base (5) has several slurry through holes, which can collect the desulfurization slurry flowing down from the top of the desulfurization tower (1) to the bottom of the desulfurization tower (1) through the slurry through holes. The driving component (6) is fixed outside the desulfurization tower (1); A horizontal bevel gear (7) is mounted on the partition base (5) via a rotating shaft; A vertical bevel gear (8) meshes with the horizontal bevel gear (7), and the vertical bevel gear (8) rotates coaxially with the driving member (6); The second flow equalization plate (9) rotates coaxially at the top of the horizontal bevel gear (7). The second flow equalization plate (9) is close to the first flow equalization plate (4) and also has several flue gas through holes. The driving member (6) is used to drive the vertical bevel gear (8) to rotate, thereby enabling the second flow equalization plate (9) to rotate. When the second flow equalization plate (9) rotates, it blocks the number of flue gas through holes of the first flow equalization plate (4), thereby evenly distributing the flue gas on the upper part of the guide pipe (3).

2. The device according to claim 1, characterized in that, It also includes several vertical flow channels (101). Several vertical flow channels (101) are opened at equal angles at the bottom of the inner wall of the desulfurization tower (1) and extend along the inner wall of the desulfurization tower (1) to the top of the guide pipe (3). When the desulfurization slurry flows to the inner wall of the desulfurization tower (1), it can flow along the vertical flow channels (101) to the bottom of the desulfurization tower (1).

3. The device according to claim 2, characterized in that, It also includes several guide channels (201), and the upper end face of the guide pipe (3) is provided with several guide channels (201) and extends to the inner wall of the desulfurization tower (1). Several of the guide channels (201) are in contact with a vertical flow channel (101), so that when the desulfurization slurry flows to the top of the guide pipe (3), it can flow along the guide channels (201) and the vertical flow channel (101) to the bottom of the desulfurization tower (1).

4. The device according to claim 3, characterized in that, It also includes a protective cover (301) disposed on the horizontal bevel gear (7) and the vertical bevel gear (8).

5. The device according to claim 4, characterized in that, It also includes a diffuser flare (401) installed at the outlet of the flue gas pipe (2).

6. The device according to claim 1, characterized in that, It also includes a transparent observation port (501) installed on the desulfurization tower (1).

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