Online cleaning and soot blowing system for acid-making waste heat boiler tube bank

Abstract

The utility model discloses an acid-making waste heat boiler tube bank online cleaning and soot blowing system, which relates to the technical field of acid-making waste heat boiler heat exchange equipment and comprises a waste heat boiler, a gas storage device, a gas connecting tube, a plurality of remote control valves, a plurality of spiral spraying nozzles and a pipeline support. Water injection openings are fixedly formed in the two sides of the top of the waste heat boiler. The gas storage device, the main pipe, the flow dividing pipe, the remote controller, the valve, the annular pipe and the spiral spraying and sweeping nozzle are used in cooperation, when dust is formed on the boiler pipe and the inner wall of the waste heat boiler during long-time use, compressed gas in the gas storage device can be blown out through the spiral spraying and sweeping nozzle, and the dust is cleaned; and through cooperative use of the fixing plates, the sliding grooves, the double-end threaded rods and the arc-shaped clamping plates, the gas storage device can be fixed, and displacement can be effectively prevented in the using process.

Description

Technical Field

[0001] The utility model relates to the field of heat exchange of waste heat boilers for acid making, in particular to an on-line cleaning and soot blowing system for the tube bank of a waste heat boiler for acid making. Background Art

[0002] In an acid making system, a waste heat boiler is a device used to reduce the temperature of gases. It can evenly cool high-temperature gases to the temperature range required by the system, thus meeting the needs of industrial production. Due to its high heat exchange efficiency and simple structure, it has been widely used in various production industries according to different sites, space heights, service performances, etc.

[0003] However, during the long-term operation of production, ash will accumulate when the flue gas generated after the combustion of volatile components flows through the heat exchange system of the waste heat boiler. This kind of ash will cover and adhere to the heat exchange surface, and the surface of the tube bank of the waste heat boiler will scale due to oxidation and rusting. This not only increases the thermal resistance of the heat exchange surface, reduces the heat exchange efficiency, but also increases the flow resistance, resulting in an increase in the outlet temperature of the waste heat boiler and a decrease in the heat exchange amount. Moreover, most of the existing gas storage devices are not easy to fix, so displacement may occur during use, easily causing pipeline bending or even cracking, and reducing the service life of the pipeline. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an on-line cleaning and soot blowing system for the tube bank of a waste heat boiler for acid making.

[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] An on-line cleaning and soot blowing system for the tube bank of a waste heat boiler for acid making, comprising a waste heat boiler, a gas storage device, a gas connection pipe, a plurality of remote control valves, a plurality of spiral spray nozzles, and a pipeline support. A plurality of boiler tubes are fixedly arranged in the waste heat boiler. Water injection ports are fixedly arranged on both sides of the top of the waste heat boiler, and water outlet ports are fixedly arranged on both sides of the bottom of the waste heat boiler. One ends of the boiler tubes are fixedly connected to the water injection ports, and the other ends of the boiler tubes are fixedly connected to the water outlet ports. The gas connection pipe comprises a main pipe, a plurality of shunt pipes, and a plurality of annular pipes. The main pipe is fixedly connected to the gas storage device, the main pipe is fixedly connected to the shunt pipes, the shunt pipes are fixedly connected to the annular pipes, a plurality of remote control valves are fixedly arranged on the main pipe, a plurality of spiral spray nozzles are arranged at the bottom of the annular pipes, and the pipeline support is fixedly connected to the main pipe.

[0007] Preferably, a fixed plate is provided at the bottom of the gas storage device. A chute is formed in the fixed plate. A double-headed threaded rod is rotatably provided in the chute. A pair of arc-shaped clamping plates are slidably provided in the chute. The arc-shaped clamping plates are both threadedly connected to the double-headed threaded rod. A motor is fixedly provided on one side of the fixed plate. The output end of the motor is fixedly connected to the double-headed threaded rod.

[0008] Preferably, the remote control valve includes a remote controller and a valve. The valve is controlled to open and close through the remote controller.

[0009] Preferably, multiple annular pipes are arranged in three layers, upper, middle and lower. Each boiler pipe is located at the center of the annular pipe. The main pipe penetrates through the pipe support. Each layer of annular pipe is fixedly connected to different shunt pipes respectively. Multiple outlets are provided at the top of the main pipe. The outlets of the main pipe are fixedly connected to the shunt pipes respectively. Multiple remote control valves are respectively located at the outlet pipes of multiple outlets of the main pipe.

[0010] Preferably, multiple spiral spray nozzles are distributed in an annular array. The spray openings of the spiral spray nozzles are all arranged downward.

[0011] Preferably, gas inlets and outlets are provided at the bottom and top of the waste heat boiler. Multiple support legs are fixedly provided at the bottom of the waste heat boiler.

[0012] Preferably, the shunt pipes all penetrate through the waste heat boiler, and the boiler pipes all penetrate through the waste heat boiler.

[0013] Preferably, the double-headed threaded rod penetrates through the fixed plate. A pair of arc-shaped clamping plates are respectively located on different threaded directions of the double-headed threaded rod. The pair of arc-shaped clamping plates are symmetrically arranged.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the coordinated use of the gas storage device, the main pipe, the shunt pipes, the remote controller, the valve, the annular pipes and the spiral spray nozzles, when ash accumulates on the inner walls of the boiler pipes and the waste heat boiler during long-term use, the compressed gas in the gas storage device can be blown out through the spiral spray nozzles to clean the ash, preventing the situation of heat exchange quantity reduction caused by dust.

[0016] 2. In the present utility model, through the coordinated use of the fixed plate, the chute, the double-headed threaded rod and the arc-shaped clamping plates, the gas storage device can be fixed, effectively preventing displacement during use and reducing the possibility of pipeline bending. Description of the Drawings

[0017] The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is a front view structural schematic diagram of the present utility model;

[0019] Figure 2 is a sectional view structural schematic diagram of the waste heat boiler of the present utility model;

[0020] Figure 3 is a sectional view structural schematic diagram of the fixing plate of the present utility model;

[0021] Figure 4 is of the present utility model Figure 2 magnified schematic diagram at position A;

[0022] Figure 5 is a schematic diagram of the plane outflow of the present utility model;

[0023] Reference numerals in the figures: 1. Waste heat boiler; 11. Boiler tube; 12. Water injection port; 13. Water outlet; 2. Gas storage device; 21. Fixing plate; 22. Slide groove; 23. Double-headed threaded rod; 24. Arc-shaped clamping plate; 25. Motor; 3. Gas connection pipe; 31. Main pipe; 32. Shunt pipe; 33. Annular pipe; 4. Remote control valve; 41. Remote controller; 42. Valve; 5. Spiral spray nozzle; 6. Pipe support. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] Embodiment 1: This embodiment provides an on-line cleaning and soot blowing system for the tube bank of an acid-making waste heat boiler. Refer to Figures 1 - 5, specifically, it includes a waste heat boiler 1, a gas storage device 2, a gas connection pipe 3, a plurality of remote control valves 4, a plurality of spiral spray nozzles 5, a pipe support 6. A plurality of boiler tubes 11 are fixedly arranged in the waste heat boiler 1. Water injection ports 12 are fixedly arranged on both sides of the top of the waste heat boiler 1, and water outlet ports 13 are fixedly arranged on both sides of the bottom of the waste heat boiler 1. One end of each boiler tube 11 is fixedly connected to the water injection port 12, and the other end of each boiler tube 11 is fixedly connected to the water outlet port 13. The gas connection pipe 3 includes a main pipe 31, a plurality of shunt pipes 32 and a plurality of annular pipes 33. The main pipe 31 is fixedly connected to the gas storage device 2. The main pipe 31 is fixedly connected to the shunt pipes 32, and the shunt pipes 32 are fixedly connected to the annular pipes 33. A plurality of remote control valves 4 are fixedly arranged on the main pipe 31. A plurality of spiral spray nozzles 5 are arranged at the bottom of the annular pipes 33. The pipe support 6 is fixedly connected to the main pipe 31;

[0026] The remote control valve 4 includes a remote controller 41 and a valve 42. The valve 42 is controlled to open and close by the remote controller 41. The plurality of annular pipes 33 are arranged in three layers, upper, middle and lower. Each boiler tube 11 is located at the center of the annular pipe 33. The main pipe 31 penetrates through the pipe support 6. Each layer of annular pipe 33 is fixedly connected to a different shunt pipe 32 respectively. A plurality of outlets are arranged at the top of the main pipe 31. The outlets of the main pipe 31 are fixedly connected to the shunt pipes 32 respectively. A plurality of remote control valves 4 are respectively located at the outlet pipes of the main pipe 31. The plurality of spiral spray nozzles 5 are distributed in a circular array. The spray ports of the spiral spray nozzles 5 are all arranged downward. Gas inlets and outlets are arranged at the bottom and top of the waste heat boiler 1. A plurality of support legs are fixedly arranged at the bottom of the waste heat boiler 1. The shunt pipes 32 all penetrate through the waste heat boiler 1, and the boiler tubes 11 all penetrate through the waste heat boiler 1.

[0027] In the specific implementation process, such as Figure 1 and Figure 2As shown in the figure, high-temperature gas is injected from the bottom of the waste heat boiler 1 and discharged from the top. Water is injected through the water injection port 12. The water contacts the high-temperature gas through the boiler tube 11 to cool the high-temperature gas, and then the water heated by the high-temperature gas is discharged through the water outlet 13 for storage and reuse. During long-term use, dust will adhere to the inner wall of the boiler tube 11 and the inner wall of the waste heat boiler 1. The valve 42 is opened through the remote controller 41, and the compressed gas in the gas storage device 2 is blown out from the spiral spray nozzle 5 through the gas connection pipe 3 to clean the outer wall of the boiler tube 11 and the inner wall of the waste heat boiler 1. After the purging operation at a certain purging position of the waste heat boiler 1 is completed, the above purging operation steps are repeated to purge and remove dust at other positions of the waste heat boiler 1 until the purging operation of the entire waste heat boiler 1 and the boiler tube 11 is completed. The length, diameter, and shape of the spiral spray nozzle 5 are designed according to the purging operation environment at different purging positions, which can achieve the best purging effect and realize the best scale and ash removal. Through the coordinated use of the gas storage device 2, the main pipe 31, the shunt pipe 32, the remote controller 41, the valve 42, the annular pipe 33, and the spiral spray nozzle 5, when ash accumulates on the inner wall of the boiler tube 11 and the waste heat boiler 1 during long-term use, the compressed gas in the gas storage device 2 can be blown out through the spiral spray nozzle 5 to clean the accumulated ash.

[0028] Embodiment 2: In Embodiment 1, there is still a problem that most existing gas storage devices are not easy to fix. Therefore, on the basis of Embodiment 1, this embodiment further includes:

[0029] A fixing plate 21 is provided at the bottom of the gas storage device 2. A chute 22 is opened in the fixing plate 21. A double-headed threaded rod 23 is rotatably provided in the chute 22. A pair of arc-shaped clamping plates 24 are slidably provided in the chute 22. The arc-shaped clamping plates 24 are both threadedly connected to the double-headed threaded rod 23. A motor 25 is fixedly provided on one side of the fixing plate 21. The output end of the motor 25 is fixedly connected to the double-headed threaded rod 23. The double-headed threaded rod 23 penetrates through the fixing plate 21. The pair of arc-shaped clamping plates 24 are respectively located on different threaded directions of the double-headed threaded rod 23, and the pair of arc-shaped clamping plates 24 are symmetrically arranged.

[0030] In the specific implementation process, as Figure 1 and Figure 3 shown, the gas storage device 2 is placed on the fixing plate 21. The motor 25 is started. The motor 25 drives the double-headed threaded rod 23 to rotate. The double-headed threaded rod 23 drives the arc-shaped clamping plates 24 to move towards the middle. The arc-shaped clamping plates 24 clamp the gas storage device 2 in the middle to fix it. Through the coordinated use of the fixing plate 21, the chute 22, the double-headed threaded rod 23, and the arc-shaped clamping plates 24, the gas storage device 2 can be fixed, which can effectively prevent displacement during use.

[0031] Specifically, the working principle and operation method of the present utility model are as follows:

[0032] Step 1: The high-temperature gas is injected from the bottom of the waste heat boiler 1 and discharged from the top. Water is injected through the water injection port 12. The water contacts the high-temperature gas through the boiler tubes 11 to cool the high-temperature gas, and then the water heated by the high-temperature gas is discharged through the water outlet 13 for storage and reuse. During long-term use, dust will adhere to the inside of the boiler tubes 11 and the inner wall of the waste heat boiler 1. The valve 42 is opened through the remote controller 41, and the compressed gas in the gas storage device 2 is blown out from the spiral spray nozzle 5 through the gas connection pipe 3 to clean the outer wall of the boiler tubes 11 and the inner wall of the waste heat boiler 1. After the purging operation at a certain purging position of the waste heat boiler 1 is completed, the above purging operation steps are repeated to purge and remove dust from other positions of the waste heat boiler 1 until the purging operation of the entire waste heat boiler 1 and the boiler tubes 11 is completed. The length, diameter, and shape of the spiral spray nozzle 5 are designed according to the purging operation environment of different purging positions, which can achieve the best purging effect and realize the best scale and ash removal;

[0033] Step 2: Place the gas storage device 2 on the fixed plate 21, start the motor 25, the motor 25 drives the double-headed threaded rod 23 to rotate, the double-headed threaded rod 23 drives the arc-shaped clamping plate 24 to move towards the middle, and the arc-shaped clamping plate 24 clamps the gas storage device 2 in the middle to fix it;

[0034] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An online cleaning and sootblowing system for a waste heat boiler pipe arrangement for acid production, comprising a waste heat boiler (1), a gas storage device (2), a gas connecting pipe (3), a plurality of remote control valves (4), a plurality of spiral spray nozzles (5), and a pipe support (6), characterized in that: A plurality of boiler tubes (11) are fixedly arranged in the waste heat boiler (1), water injection ports (12) are fixedly arranged on both sides of the top of the waste heat boiler (1), water outlets (13) are fixedly arranged on both sides of the bottom of the waste heat boiler (1), one end of each boiler tube (11) is fixedly connected to the water injection port (12), and the other end of each boiler tube (11) is fixedly connected to the water outlet (13), the gas connecting pipe (3) comprises a main pipe (31), a plurality of branch pipes (32) and a plurality of annular pipes (33), the main pipe (31) is fixedly connected to the gas storage device (2), the main pipe (31) is fixedly connected to the branch pipe (32), the branch pipe (32) is fixedly connected to the annular pipe (33), a plurality of remote control valves (4) are fixedly arranged on the main pipe (31), a plurality of spiral spray nozzles (5) are arranged at the bottom of each annular pipe (33), and the pipe support (6) is fixedly connected to the main pipe (31).

2. The online cleaning and soot blowing system for acid waste heat boiler tube array according to claim 1 is characterized in that: A fixing plate (21) is provided at the bottom of the gas storage device (2), a slide groove (22) is provided in the fixing plate (21), a double-threaded rod (23) is rotatably provided in the slide groove (22), a pair of arc-shaped clamping plates (24) are slidably provided in the slide groove (22), and the arc-shaped clamping plates (24) are both threadedly connected to the double-threaded rod (23), a motor (25) is fixedly provided on one side of the fixing plate (21), and an output end of the motor (25) is fixedly connected to the double-threaded rod (23).

3. The online cleaning and soot blowing system for acid waste heat boiler tube array according to claim 1 is characterized in that: The remote control valve (4) comprises a remote controller (41) and a valve (42), and the valve (42) is controlled to open or close by the remote controller (41).

4. The online cleaning and soot blowing system for acid waste heat boiler tube bank according to claim 1 is characterized in that: The plurality of annular tubes (33) are arranged in three layers, upper, middle and lower; each boiler tube (11) is located at the center of the annular tube (33); the main tube (31) passes through the pipe support (6); each layer of the annular tubes (33) is fixedly connected to different branch tubes (32); a plurality of outlets are provided at the top of the main tube (31); the outlets of the main tube (31) are fixedly connected to the branch tubes (32); and the plurality of remote control valves (4) are respectively located at the plurality of outlet pipes of the main tube (31).

5. The online cleaning and soot blowing system for acid waste heat boiler tube array according to claim 1 is characterized in that: The plurality of spiral spray nozzles (5) are distributed in a ring array, and the nozzles of the spiral spray nozzles (5) are all arranged downwards.

6. The online cleaning and soot blowing system for acid waste heat boiler tube bank according to claim 1 is characterized in that: The waste heat boiler (1) is provided with gas inlets and outlets at the bottom and top, and a plurality of supporting legs are fixedly provided at the bottom of the waste heat boiler (1).

7. The on-line cleaning and soot blowing system for acid waste heat boiler tube bank according to claim 1 is characterized in that: The diversion pipes (32) all pass through the waste heat boiler (1), and the boiler pipes (11) all pass through the waste heat boiler (1).

8. The online cleaning and soot blowing system for the acid waste heat boiler tube bank according to claim 2 is characterized by: The double-threaded rod (23) passes through the fixed plate (21); a pair of arc-shaped clamping plates (24) are respectively located in different thread directions of the double-threaded rod (23); and the pair of arc-shaped clamping plates (24) are symmetrically arranged.

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