Inlet flue for ammonia desulfurization

Abstract

The utility model relates to the technical field of desulfurization, in particular to an ammonia desulfurization inlet flue which comprises a desulfurization tower and a flue body, a mounting hole is formed in the top of one side of the desulfurization tower, the flue body comprises a straight flue and an inclined flue, a smoke inlet is formed in the other end of the straight flue, and a smoke outlet is formed in the other end of the inclined flue. The end, close to the smoke outlet, of the inclined flue is welded to the mounting hole, high-temperature glass flakes are adopted for corrosion prevention after the welding position of the inclined flue and the mounting hole is polished, and the inclined flue obliquely extends into the desulfurizing tower through the mounting hole, so that the problem of slurry backflow caused by smoke turbulence can be effectively solved; the strength of the flue body is enhanced, the cost of the flue body is saved, the automatic flushing mechanism is installed on the inner wall of the top of the end, close to the smoke inlet, of the straight flue in a threaded mode, the automatic flushing mechanism can automatically flush the interior of the flue body in a timing mode, and corrosion caused by enrichment of corrosive substances at the bottom of the flue can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to an inlet flue of ammonia desulfurization. Background Art

[0002] The design of the inlet flue of the ammonia desulfurization tower basically follows the design concept of the inlet flue of the calcium desulfurization tower. Generally, the dry and wet interface material of the inlet flue is carbon steel with a 2mm thick Hastelloy alloy sheet, and the two are connected together by argon arc welding.

[0003] However, the prior art has the following defects:

[0004] The existing inlet flue is the most severely corroded part of the ammonia desulfurization system, with frequent corrosion leakage. At the same time, the desulfurization slurry interpenetrates in the interlayer of carbon steel and alloy plates, which will lead to the continuous appearance of new corrosion leakage points. Frequent corrosion leakage not only pollutes the environment around the desulfurization tower, but also affects the clean production on site, seriously restricting the safe, long-term and optimal operation of the device. Utility Model Content

[0005] The utility model aims to provide an ammonia desulfurization inlet flue to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ammonia desulfurization inlet flue, comprising a desulfurization tower and a flue body, a mounting hole is provided at the top of one side of the desulfurization tower, the flue body comprises an inclined flue and a straight flue, one end of the inclined flue is connected with one end of the straight flue, a smoke outlet is provided at the end of the inclined flue away from the straight flue, a smoke inlet is provided at the end of the straight flue away from the inclined flue, and the outer side of the inclined flue at a distance from the end close to the smoke outlet is welded to the inner wall of the mounting hole.

[0007] The above technical solution is adopted, in which the connecting part of the flue body and the desulfurization tower is inclined to avoid slurry backflow, and the inclined flue is welded to the mounting hole of the desulfurization tower, which is tightly connected to prevent falling off.

[0008] One end of the inclined flue with a smoke outlet extends into the desulfurization tower through a mounting hole. The extension length of the inclined flue in the desulfurization tower is greater than or equal to 1.5 meters. The inclination angle of the inclined flue is between 20 and 25 degrees.

[0009] The above technical solution is adopted, in which the inclined flue extends into the desulfurization tower and is arranged obliquely, which can effectively avoid the slurry reflux problem caused by flue gas turbulence.

[0010] The flue body is made of a 4-millimeter Hastelloy plate. The length of the flue body is three meters. A number of reinforcing ribs are evenly distributed on the outside of the flue body. The reinforcing ribs are in a circular shape and are made of carbon steel.

[0011] The above technical solution is adopted. The flue body of the solution adopts a thickened Hastelloy alloy plate. The outer reinforcing ribs not only improve the strength of the flue body, but the carbon steel reinforcing ribs also save the flue cost.

[0012] The outer wall of the inclined flue and the outer wall of the desulfurization tower are welded by argon arc welding, and the welding point between the inclined flue and the desulfurization tower is fixedly installed with high-temperature glass flakes after being polished.

[0013] By adopting the above technical solution, the welding points are smoother after grinding, making the high-temperature glass flakes more tightly connected. The high-temperature glass flakes have good high-temperature resistance and are set at the welding points to effectively prevent leakage and corrosion.

[0014] An automatic flushing mechanism is provided on the inner wall of the top of one end of the straight flue close to the smoke inlet, and the automatic flushing mechanism includes a mounting seat. The cross-sectional shape of the mounting seat is an arc shape, and the outer wall of the top of the mounting seat is tightly abutted against the inner wall of the top of the straight flue, and a plurality of flushing nozzles are evenly distributed on the bottom of the mounting seat.

[0015] By adopting the above technical solution, the automatic flushing mechanism at the top of the straight flue can flush the inside of the straight flue, which can effectively reduce the corrosion caused by the enrichment of corrosive substances at the bottom of the flue.

[0016] A connecting plate is fixedly installed in the middle of the four sides of the mounting seat, a threaded through hole is opened in the middle of the connecting plate, a plurality of threaded holes are opened on the inner wall of the top of the straight flue, the threaded holes and the threaded through holes are opened correspondingly, and the connecting plate is threadedly connected to the straight flue by bolts.

[0017] By adopting the above technical solution, the four sides of the mounting seat are connected to the inner wall of the top of the straight flue through the connecting plate, which is detachable, easy to disassemble and replace, and prolongs the service life of the flue body.

[0018] An installation cavity is provided inside the installation seat, and a controller and a timer are fixedly installed on the inner wall at the top of the installation cavity in sequence. The flushing nozzle is electrically connected to the controller, and the controller is electrically connected to the timer.

[0019] The above technical solution is adopted. The controller model of this solution is PC-350. The timer sets the time and transmits the signal to the controller at a regular time. The controller can open and close the flushing nozzle at a regular time, so that it can automatically and regularly flush the inside of the flue body.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The inclined flue of the utility model is welded to the mounting hole of the desulfurization tower. The welding points are polished and then anti-corrosion is adopted with high-temperature glass flakes. The inclined flue extends obliquely toward the desulfurization tower, which can effectively avoid the slurry reflux problem caused by flue gas turbulence. An automatic flushing mechanism is provided on the top of the inner side of one end of the flue body close to the smoke inlet, which can perform regular flushing of the flue, and can effectively reduce the corrosion caused by the enrichment of corrosive substances at the bottom of the flue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front internal structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the flue body of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the automatic flushing mechanism of the utility model.

[0026] In the figure: 1. desulfurization tower; 2. flue body; 3. reinforcing ribs; 4. smoke inlet; 5. controller; 6. automatic flushing mechanism; 7. inclined flue; 8. smoke outlet; 9. high-temperature glass flakes; 10. mounting hole; 11. straight flue; 12. flushing nozzle; 13. connecting plate; 14. threaded hole; 15. threaded through hole; 16. bolt; 17. mounting seat; 18. timer; 19. mounting cavity. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-4The utility model provides an ammonia desulfurization inlet flue, including a desulfurization tower 1 and a flue body 2. A mounting hole 10 is provided on the top of one side of the desulfurization tower 1. The flue body 2 includes an inclined flue 7 and a straight flue 11. One end of the inclined flue 7 is connected with one end of the straight flue 11. A smoke outlet 8 is provided at the end of the inclined flue 7 away from the straight flue 11. A smoke inlet 4 is provided at the end of the straight flue 11 away from the inclined flue 7. The outer side of the inclined flue 7 at a distance from the end close to the smoke outlet 8 is welded to the inner wall of the mounting hole 10, and the inclined flue 7 is connected with the desulfurization tower 1 through the mounting hole 10.

[0029] One end of the inclined flue 7 with a smoke outlet 8 extends into the desulfurization tower 1 through the mounting hole 10. The extension length of the inclined flue 7 inside the desulfurization tower 1 is greater than or equal to one and a half meters. The inclination angle of the inclined flue 7 is between twenty and twenty-five degrees. The inclined flue 7 extends obliquely into the desulfurization tower 1.

[0030] The flue body 2 is made of a four-millimeter Hastelloy plate. The length of the flue body 2 is three meters. A number of reinforcing ribs 3 are evenly distributed on the outside of the flue body 2. The reinforcing ribs 3 are circular and made of carbon steel. The inner wall of the reinforcing rib 3 is fixedly connected to the outer wall of the flue body 2.

[0031] The outer wall of the inclined flue 7 and the outer wall of the desulfurization tower 1 are welded by argon arc welding. The welding joints between the inclined flue 7 and the desulfurization tower 1 are polished and fixedly installed with high-temperature glass flakes 9. The high-temperature glass flakes 9 are fixedly installed at the welding joints between the inclined flue 7 and the desulfurization tower 1.

[0032] An automatic flushing mechanism 6 is provided on the inner wall at the top of one end of the straight flue 11 close to the smoke inlet 4. The automatic flushing mechanism 6 includes a mounting seat 17. The cross-sectional shape of the mounting seat 17 is an arc shape. The outer wall of the top of the mounting seat 17 is tightly abutted against the inner wall of the top of the straight flue 11. A plurality of flushing nozzles 12 are evenly distributed on the bottom of the mounting seat 17. The automatic flushing mechanism 6 can flush the interior of the straight flue 11 close to the smoke inlet 4.

[0033] A connecting plate 13 is fixedly installed in the middle of the four sides of the mounting seat 17, a threaded through hole 15 is opened in the middle of the connecting plate 13, a plurality of threaded holes 14 are opened on the inner wall at the top of the straight flue 11, and the threaded holes 14 are opened corresponding to the threaded through holes 15. The connecting plate 13 is threadedly connected to the straight flue 11 by bolts 16, and the mounting seat 17 is threadedly connected to the top of the straight flue 11 through the connecting plate 13.

[0034] An installation cavity 19 is provided inside the installation seat 17, and a controller 5 and a timer 18 are fixedly installed on the inner wall at the top of the installation cavity 19 in sequence. The flushing nozzle 12 is electrically connected to the controller 5, and the controller 5 is electrically connected to the timer 18. The timer 18 and the controller 5 can control the flushing nozzle 12 to automatically spray the interior of the straight flue 11 at a fixed time.

[0035] Working principle: When the utility model is used, the flue body 2 and the desulfurization tower 1 are welded by argon arc welding, and the welding point between the two is anti-corrosive by high-temperature glass flakes 9 to extend the service life. A number of reinforcing ribs 3 are evenly distributed on the outside of the flue body 2, which not only enhances the strength of the flue body 2, but also saves the cost of the flue body 2. The inclined flue 7 extends obliquely toward the inside of the desulfurization tower 1 through the mounting hole 10, which can effectively avoid the slurry reflux problem caused by flue gas turbulence. The inner wall of the straight flue 11 near the top of one end of the smoke inlet 4 is threadedly installed with an automatic flushing mechanism 6. The automatic flushing mechanism 6 can automatically and regularly flush the inside of the flue body 2 through the internal controller 5 and timer 18, which can effectively reduce the corrosion caused by the enrichment of corrosive substances at the bottom of the flue.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ammonia desulfurization inlet flue, comprising a desulfurization tower (1) and a flue body (2), characterized in that: A mounting hole (10) is provided at the top of one side of the desulfurization tower (1); the flue body (2) comprises an inclined flue (7) and a straight flue (11); one end of the inclined flue (7) is connected to one end of the straight flue (11); a smoke outlet (8) is provided at one end of the inclined flue (7) away from the straight flue (11); a smoke inlet (4) is provided at one end of the straight flue (11) away from the inclined flue (7); and the outer side of the inclined flue (7) at a distance from one end close to the smoke outlet (8) is welded to the inner wall of the mounting hole (10).

2. The ammonia desulfurization inlet flue according to claim 1, characterized in that: One end of the inclined flue (7) having a smoke outlet (8) extends into the desulfurization tower (1) through a mounting hole (10); the extending length of the inclined flue (7) inside the desulfurization tower (1) is greater than or equal to 1.5 meters; and the inclination angle of the inclined flue (7) is between 20 and 25 degrees.

3. The ammonia desulfurization inlet flue according to claim 1 is characterized in that: The flue body (2) is made of a 4 mm Hastelloy plate. The length of the flue body (2) is 3 meters. A plurality of reinforcing ribs (3) are evenly distributed on the outside of the flue body (2). The reinforcing ribs (3) are in a circular shape and are made of carbon steel.

4. The inlet flue of an ammonia desulfurization system according to claim 1 is characterized in that: The outer wall of the inclined flue (7) and the outer wall of the desulfurization tower (1) are welded by argon arc welding, and the welding point between the inclined flue (7) and the desulfurization tower (1) is polished and fixedly installed with high-temperature glass flakes (9).

5. The inlet flue of an ammonia desulfurization system according to claim 1 is characterized in that: An automatic flushing mechanism (6) is provided on the inner wall of the top of one end of the straight flue (11) close to the smoke inlet (4), and the automatic flushing mechanism (6) comprises a mounting seat (17). The cross-sectional shape of the mounting seat (17) is an arc shape, and the outer wall of the top of the mounting seat (17) is tightly abutted against the inner wall of the top of the straight flue (11). A plurality of flushing nozzles (12) are evenly distributed on the bottom of the mounting seat (17).

6. The inlet flue of an ammonia desulfurization system according to claim 5, characterized in that: A connecting plate (13) is fixedly mounted in the middle of the four sides of the mounting seat (17), a threaded through hole (15) is provided in the middle of the connecting plate (13), a plurality of threaded holes (14) are provided on the inner wall of the top of the straight flue (11), the threaded holes (14) and the threaded through holes (15) are provided correspondingly, and the connecting plate (13) and the straight flue (11) are threadedly connected via bolts (16).

7. The inlet flue of an ammonia desulfurization system according to claim 6, characterized in that: The mounting seat (17) has an installation cavity (19) formed inside, and a controller (5) and a timer (18) are fixedly mounted on the top inner wall of the installation cavity (19) in sequence, the flushing nozzle (12) is electrically connected to the controller (5), and the controller (5) is electrically connected to the timer (18).

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