Air supply equipment for sulfur recovery

Abstract

The utility model belongs to the technical field of coal chemical industry production, and particularly relates to an air supply device for sulfur recovery, which comprises a main combustion furnace fan, an incinerator fan, a shunting mechanism, a combustion furnace and an incinerator, an air outlet of the main combustion furnace fan is connected with a first outlet pipeline, and an air outlet of the incinerator fan is connected with a second outlet pipeline. The second outlet pipeline is connected to the incinerator; the flow dividing mechanism comprises a flow dividing tee joint and a flow guiding assembly, the flow dividing tee joint comprises a straight-through pipe section and a side pipe section, the straight-through pipe section is provided with a first port and a second port, the first port is connected with the first outlet pipeline, the second port is connected with a first flow guiding pipe, the first flow guiding pipe is connected to the first outlet pipeline, and the side pipe section is provided with a third port. The third port is connected with a second flow guide pipe, the second flow guide pipe is connected to the combustion furnace, and the flow guide assembly is used for conducting flow guide on the air volume of the flow dividing tee joint. The device can realize one-driving-two through fan transformation, so that the equipment investment is saved, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal chemical production, and specifically relates to air supply equipment for sulfur recovery. Background Art

[0002] The main function of the sulfur recovery section is to recover sulfur. Usually, the sulfur recovery section is designed with a main combustion furnace fan and an incinerator fan, and each requires a spare machine.

[0003] The maximum value of the sulfur recovery acid gas inlet volume reaches 7000kg / h, and the daily sulfur output is about 60 tons. At this time, the main combustion furnace requires an air flow of 3097kg / h, and the primary and secondary air volumes of the incinerator are 1062kg / h and 2501kg / h respectively. Adding the air volume required by the fourth preheater, the total required air volume is about 6900kg / h. The fan design load is 125 cubic meters per minute, and the air density is 1.16kg / m at a temperature of 30℃. 3 The rated air volume of the main combustion furnace fan outlet is 8700kg / h. From the data, it can be seen that one main combustion furnace fan can meet the air volume required by the sulfur recovery section under full load. Therefore, the inventor considered whether it is possible to start only one main combustion furnace fan to ensure the air volume required for the combustion of the two furnaces, while meeting production needs and saving energy and reducing consumption.

[0004] Therefore, there is an urgent need for an air supply device for sulfur recovery to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the utility model provides an air supply equipment for sulfur recovery, including a main combustion furnace fan, an incinerator fan, a diversion mechanism, a combustion furnace and an incinerator, the air inlet of the main combustion furnace fan is connected to a first inlet pipeline, and a first inlet pneumatic valve is arranged on the first inlet pipeline, the air outlet of the main combustion furnace fan is connected to a first outlet pipeline, and a first check valve, a butterfly valve and a first outlet pneumatic valve are arranged on the first outlet pipeline, the air inlet of the incinerator fan is connected to a second inlet pipeline, and a second inlet pipeline is provided with a second inlet pneumatic valve, the air outlet of the incinerator fan is connected to a second outlet pipeline, and a second check valve, a second outlet pneumatic valve and a flow control valve are arranged on the second outlet pipeline, and the second outlet pipeline is connected to the incinerator for providing air volume for the incinerator.

[0006] The flow diversion mechanism includes a flow diversion tee and a flow guide assembly. A detachable sealing cover is provided on the top of the flow diversion tee. The flow diversion tee includes a straight pipe section and a side pipe section perpendicular to the straight pipe section. The straight pipe section is provided with two ports, which are divided into a first port and a second port. The first port is connected to a first outlet pipeline. The second port is connected to a first flow guide pipe. The first flow guide pipe is connected to a pipeline between a second outlet pneumatic valve and a flow control valve of the first outlet pipeline. A first gate valve is provided on the first flow guide pipe. The side pipe section is provided with a third port. The third port is connected to a second flow guide pipe. The second flow guide pipe is connected to a combustion A furnace is used to provide air volume for the combustion furnace. A third check valve and a second gate valve are arranged on the second guide pipe. The guide assembly includes a first guide plate, a second guide plate, a first servo motor and a second servo motor. The first guide plate is hinged in the straight pipe section of the diversion tee and corresponds to the position of the side pipe section. The second guide plate is hinged in the side pipe section and is located at the connection port between the straight pipe section and the side pipe section. The first servo motor and the second servo motor are both fixedly arranged on the outside of the diversion tee, and the first servo motor and the second servo motor are respectively used to drive the first guide plate and the second guide plate to rotate.

[0007] Optionally, a first air volume sensor and a second air volume sensor are respectively provided on the first air guide pipe and the second air guide pipe.

[0008] Specifically, the first air volume sensor is used to detect the air volume in the first air guide duct, and the second air volume sensor is used to detect the air volume in the second air guide duct.

[0009] Optionally, the windward surface of the first guide plate is a concave arc surface, and a plurality of guide wing plates are arranged on the concave arc surface.

[0010] Specifically, the first guide plate is designed in this way to improve the guide effect and increase the air supply distance. The first servo motor drives the first guide plate to rotate a certain angle, so that part of the air flow flows into the side pipe section of the diversion tee, which is convenient for adjusting the air volume of the two guide pipes, and then adjusting the amount of air entering the two furnaces.

[0011] Optionally, the diameters of the first flow guide pipe and the second flow guide pipe are both DN150-DN200mm.

[0012] Optionally, anti-surge valves are further provided on the first outlet pipeline and the second outlet pipeline.

[0013] The utility model also includes other components that enable a sulfur recovery air supply device to be used normally, which are all conventional technical means in the field. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the field, such as the main combustion furnace fan, the incinerator fan, the combustion furnace, the incinerator and the servo motor.

[0014] The working principle of the utility model is that the main combustion furnace fan is used as the main fan, the incinerator fan is used as the auxiliary fan, and the diversion mechanism is used to divert the air volume of the main combustion furnace fan. The specific operation steps are: when the air volume of the incinerator needs to be appropriately increased, the second servo motor can be used to drive the second guide plate to rotate a certain angle, and at the same time, the first servo motor is used to control the first guide plate not to rotate, that is, to ensure that the first guide plate is parallel to the straight-through pipe section of the diversion tee, so that the blocking and diversion effect of the second guide plate is utilized to make more air flow into the first guide pipe , thereby increasing the air volume entering the incinerator. If the air volume of the incinerator is still insufficient after adjustment, the incinerator fan can be started to further supplement the air volume required by the incinerator; when it is necessary to appropriately increase the air volume of the combustion furnace, the first servo motor can be used to drive the first guide plate to rotate a certain angle, and at the same time, the second servo motor can be used to ensure that the second guide plate does not rotate, that is, to ensure that the second guide plate is parallel to the side pipe section of the diversion tee, so that the blocking and diversion effect of the first guide plate is utilized to make more air flow into the second guide pipe, thereby increasing the air volume entering the combustion furnace. During the above operation process, the detection data of the first air volume sensor and the second air volume sensor can be used to control the rotation angle of the first guide plate and the second guide plate to meet the air volume required for the combustion of the two furnaces.

[0015] The beneficial effect of the utility model is that through the fan modification, one-to-two can be achieved, that is, only one main combustion furnace fan needs to be started to ensure the air volume required for combustion of the two furnaces, while meeting production needs, saving equipment investment, reducing operating costs, and saving energy and reducing consumption; in addition, the diversion mechanism can be used to divert the air volume of the main combustion furnace fan to balance the air volume entering the two furnaces, which is convenient for fine-tuning control, flexible to use, and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the flow-dividing tee of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the diverter tee of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the first guide plate of the utility model.

[0021] In the figure: 1. Main combustion furnace fan, 2. Incinerator fan, 3. Diverter mechanism, 4. Combustion furnace, 5. Incinerator, 6. First inlet pipeline, 7. First inlet pneumatic valve, 8. First outlet pipeline, 9. First check valve, 10. Butterfly valve, 11. First outlet pneumatic valve, 12. Second inlet pipeline, 13. Second inlet pneumatic valve, 14. Second outlet pipeline, 15. Second check valve, 16. Second outlet pneumatic valve, 17. Flow control valve, 18. Diverter tee, 19 .Sealing cover, 20. Straight pipe section, 21. Side pipe section, 22. First port, 23. Second port, 24. First guide pipe, 25. First gate valve, 26. Third port, 27. Second guide pipe, 28. Third check valve, 29. Second gate valve, 30. First guide plate, 31. Second guide plate, 32. First servo motor, 33. Second servo motor, 34. First air volume sensor, 35. Second air volume sensor, 36. Guide vane, 37. Anti-surge valve. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.

[0023] Example

[0024] like Figure 1-4 As shown, an embodiment of the utility model provides an air supply equipment for sulfur recovery, including a main combustion furnace fan 1, an incinerator fan 2, a diversion mechanism 3, a combustion furnace 4 and an incinerator 5, the air inlet of the main combustion furnace fan 1 is connected to a first inlet pipeline 6, and the first inlet pipeline 6 is provided with a first inlet pneumatic valve 7, the air outlet of the main combustion furnace fan 1 is connected to a first outlet pipeline 8, and the first outlet pipeline 8 is provided with a first check valve 9, a butterfly valve 10 and a first outlet pneumatic valve 11, the air inlet of the incinerator fan 2 is connected to a second inlet pipeline 12, and the second inlet pipeline 12 is provided with a second inlet pneumatic valve 13, the air outlet of the incinerator fan 2 is connected to a second outlet pipeline 14, the second outlet pipeline 14 is provided with a second check valve 15, a second outlet pneumatic valve 16 and a flow control valve 17, and the second outlet pipeline 14 is connected to the incinerator 5 for providing air volume for the incinerator 5.

[0025] The flow diversion mechanism 3 includes a flow diversion tee 18 and a flow guide assembly. A removable sealing cover 19 is provided on the top of the flow diversion tee 18. The flow diversion tee 18 includes a straight pipe section 20 and a side pipe section 21 perpendicular to the straight pipe section 20. The straight pipe section 20 is provided with two ports, which are divided into a first port 22 and a second port 23. The first port 22 is connected to the first outlet pipeline 8, and the second port 23 is connected to a first flow guide pipe 24. The first flow guide pipe 24 is connected to the pipeline between the second outlet pneumatic valve 16 and the flow control valve 17 of the first outlet pipeline 8, and a first gate valve 25 is provided on the first flow guide pipe 24. The side pipe section 21 is provided with a third port 26, and the third port 26 is connected to a second flow guide pipe 27. The second flow guide pipe 27 is connected to The combustion furnace 4 is used to provide air volume for the combustion furnace 4. The second guide pipe 27 is provided with a third check valve 28 and a second gate valve 29. The guide assembly includes a first guide plate 30, a second guide plate 31, a first servo motor 32 and a second servo motor 33. The first guide plate 30 is hinged in the straight pipe section 20 of the diversion tee 18 and corresponds to the position of the side pipe section 21. The second guide plate 31 is hinged in the side pipe section 21 and is located at the connection port between the straight pipe section 20 and the side pipe section 21. The first servo motor 32 and the second servo motor 33 are both fixedly arranged on the outside of the diversion tee 18, and the first servo motor 32 and the second servo motor 33 are respectively used to drive the first guide plate 30 and the second guide plate 31 to rotate.

[0026] In addition, the first air volume sensor 34 and the second air volume sensor 35 are respectively provided on the first guide pipe 24 and the second guide pipe 27. The first air volume sensor 34 is used to detect the air volume in the first guide pipe 24, and the second air volume sensor 35 is used to detect the air volume in the second guide pipe 27. The windward surface of the first guide plate 30 is a concave arc surface, and a plurality of guide wing plates 36 are provided on the concave arc surface. The first guide plate 30 is designed in this way to improve the guide effect and increase the air supply distance. The first servo motor 32 drives the first guide plate 30 to rotate a certain angle, so that part of the air flow flows into the side pipe section 21 of the diversion tee 18, which is convenient for adjusting the air volume of the two guide pipes, and then adjusting the air volume entering the two furnaces. The diameters of the first guide pipe 24 and the second guide pipe 27 are both DN200mm. Anti-surge valves 37 are also provided on the first outlet pipeline 8 and the second outlet pipeline 14.

[0027] The working principle of the utility model is that the main combustion furnace fan 1 is used as the main fan, the incinerator fan 2 is used as the auxiliary fan, and the diversion mechanism 3 is used to divert the air volume of the main combustion furnace fan 1. The specific operation steps are: when it is necessary to appropriately increase the air volume of the incinerator 5, the second servo motor 33 can be used to drive the second guide plate 31 to rotate a certain angle, and at the same time, the first servo motor 32 is used to control the first guide plate 30 not to rotate, that is, to ensure that the first guide plate 30 is parallel to the straight pipe section 20 of the diversion tee 18, so that the blocking and diversion effect of the second guide plate 31 is utilized to make more air flow into the first guide pipe 24, Then the air volume entering the incinerator 5 is increased. If the air volume of the incinerator 5 is still insufficient after adjustment, the incinerator fan 2 can be started to further supplement the air volume required by the incinerator 5. When it is necessary to appropriately increase the air volume of the combustion furnace 4, the first servo motor 32 can be used to drive the first guide plate 30 to rotate a certain angle, and the second servo motor 33 can be used to ensure that the second guide plate 31 does not rotate, that is, the second guide plate 31 is ensured to be parallel to the side pipe section 21 of the diversion tee 18. In this way, the blocking and diversion effect of the first guide plate 30 is utilized to make more air flow into the second guide pipe 27, thereby increasing the air volume entering the combustion furnace 4. In the above operation process, the rotation angle of the first guide plate 30 and the second guide plate 31 can be controlled by the detection data of the first air volume sensor 34 and the second air volume sensor 35 to meet the air volume required for the combustion of the two furnaces.

[0028] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A sulphur recovery air supply device, comprising a main combustion furnace fan, an incinerator fan, a diversion mechanism, a combustion furnace and an incinerator, characterized in that: The air inlet of the main combustion furnace fan is connected to a first inlet pipeline, and a first inlet pneumatic valve is arranged on the first inlet pipeline; the air outlet of the main combustion furnace fan is connected to a first outlet pipeline, and a first check valve, a butterfly valve and a first outlet pneumatic valve are arranged on the first outlet pipeline; the air inlet of the incinerator fan is connected to a second inlet pipeline, and a second inlet pneumatic valve is arranged on the second inlet pipeline; the air outlet of the incinerator fan is connected to a second outlet pipeline, and a second check valve, a second outlet pneumatic valve and a flow control valve are arranged on the second outlet pipeline, and the second outlet pipeline is connected to the incinerator to provide air volume for the incinerator; The flow diversion mechanism includes a flow diversion tee and a flow guide assembly. A detachable sealing cover is provided on the top of the flow diversion tee. The flow diversion tee includes a straight pipe section and a side pipe section perpendicular to the straight pipe section. The straight pipe section is provided with two ports, which are divided into a first port and a second port. The first port is connected to a first outlet pipeline. The second port is connected to a first flow guide pipe. The first flow guide pipe is connected to a pipeline between a second outlet pneumatic valve and a flow control valve of the first outlet pipeline. A first gate valve is provided on the first flow guide pipe. The side pipe section is provided with a third port. The third port is connected to a second flow guide pipe. The second flow guide pipe is connected to a combustion A furnace is used to provide air volume for the combustion furnace. A third check valve and a second gate valve are arranged on the second guide pipe. The guide assembly includes a first guide plate, a second guide plate, a first servo motor and a second servo motor. The first guide plate is hinged in the straight pipe section of the diversion tee and corresponds to the position of the side pipe section. The second guide plate is hinged in the side pipe section and is located at the connection port between the straight pipe section and the side pipe section. The first servo motor and the second servo motor are both fixedly arranged on the outside of the diversion tee, and the first servo motor and the second servo motor are respectively used to drive the first guide plate and the second guide plate to rotate.

2. The air supply equipment for sulfur recovery according to claim 1, characterized in that: The first air volume sensor and the second air volume sensor are respectively arranged on the first air guide pipe and the second air guide pipe.

3. The air supply equipment for sulfur recovery according to claim 1, characterized in that: The windward surface of the first guide plate is a concave arc surface, and a plurality of guide wing plates are arranged on the concave arc surface.

4. The air supply equipment for sulfur recovery according to claim 1, characterized in that: The diameters of the first flow guide pipe and the second flow guide pipe are both DN150-DN200mm.

5. The air supply equipment for sulfur recovery according to claim 1, characterized in that: Anti-surge valves are also provided on the first outlet pipeline and the second outlet pipeline.

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