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kelishi丨What are the precautions for the operation of the negative pressure pneumatic conveying system?

kelishi丨What are the precautions for the operation of the negative pressure pneumatic conveying system?

  • Categories:News Center
  • Time of issue:2022-05-06 10:21

(Summary description)Negative pressure pneumatic conveying equipment price, price of negative pressure pneumatic conveying system, how much is negative pressure pneumatic conveyor? What are the main points of a dilute phase pneumatic conveying system? 1. Do not use sloping pipes, backflow (backflow and retransmission of the same material) will require the pipe to retransmit the product that slips back above the normal load, and the effect is cumulative. At best, it increases the delivery load, but is more likely to cause blockages. 2. The negative pressure pneumatic conveying equipment sets a "reasonable" horizontal conveying length before the first bend, so as to accelerate the bulk material to a stable conveying speed and reduce the section loading of conveying pipes. The material that is decelerated due to bending occupies a larger proportion of the cross-sectional area of the duct, thereby providing more obstruction to the air flow, thereby increasing the pressure drop of the negative pressure pneumatic conveying system. 3. For reasons similar to those above, do not install elbows tightly on the pipe.   4. Consider stepping through the pipeline in a long run. Air expands as pressure drops, so velocity inevitably increases during constant pipe operation. Higher material velocities increase wear and product degradation at bends. 5. In a dilute phase system, "more air" allows "less transport capacity". Greater solid and gas frictional losses due to higher gas velocities can absorb more energy relative to the additional energy input. For a given lean phase flow system, there is an optimum gas flow rate. Ask an expert to check for correct solids-to-gas ratio balance and optimum performance. 6. There is a lot of product damage and wear at the bend. Usually has many advantages, but results in a higher pressure drop than long radius bends.   7. The rotary valve does leak, and also through the air differential through the return empty pocket. They also tend to fill up with product on one side of the valve, as the empty pockets are rotated to make room for material to flow. Gas backflow and feed bias cause many feed problems. Make sure the valve is properly ventilated and the feed channel is of good form for flow across the entire section. A short inlet riser is useful for such duties as the cyclone outlet or feed into the high pressure line. 8. Check whether the cyclone has a clear exit. If there are intermittent or periodic discharges, allow for a clear buffer capacity to avoid interfering with cyclone operations. 9. Take into account the pressure drop on the supply line to the blower. Include any filters, mufflers, sound boxes or compressor housings to allow and extend the supply run, as may be appropriate. Be sure to compensate for the temperature increase due to gas compression. 10. Provide adequate instrumentation; this is essential to understand what is going on and to facilitate proper investigation of any issues that may arise.

kelishi丨What are the precautions for the operation of the negative pressure pneumatic conveying system?

(Summary description)Negative pressure pneumatic conveying equipment price, price of negative pressure pneumatic conveying system, how much is negative pressure pneumatic conveyor? What are the main points of a dilute phase pneumatic conveying system?

1. Do not use sloping pipes, backflow (backflow and retransmission of the same material) will require the pipe to retransmit the product that slips back above the normal load, and the effect is cumulative. At best, it increases the delivery load, but is more likely to cause blockages.

2. The negative pressure pneumatic conveying equipment sets a "reasonable" horizontal conveying length before the first bend, so as to accelerate the bulk material to a stable conveying speed and reduce the section loading of conveying pipes. The material that is decelerated due to bending occupies a larger proportion of the cross-sectional area of the duct, thereby providing more obstruction to the air flow, thereby increasing the pressure drop of the negative pressure pneumatic conveying system.

3. For reasons similar to those above, do not install elbows tightly on the pipe.



 

4. Consider stepping through the pipeline in a long run. Air expands as pressure drops, so velocity inevitably increases during constant pipe operation. Higher material velocities increase wear and product degradation at bends.

5. In a dilute phase system, "more air" allows "less transport capacity". Greater solid and gas frictional losses due to higher gas velocities can absorb more energy relative to the additional energy input. For a given lean phase flow system, there is an optimum gas flow rate. Ask an expert to check for correct solids-to-gas ratio balance and optimum performance.

6. There is a lot of product damage and wear at the bend. Usually has many advantages, but results in a higher pressure drop than long radius bends.



 

7. The rotary valve does leak, and also through the air differential through the return empty pocket. They also tend to fill up with product on one side of the valve, as the empty pockets are rotated to make room for material to flow. Gas backflow and feed bias cause many feed problems. Make sure the valve is properly ventilated and the feed channel is of good form for flow across the entire section. A short inlet riser is useful for such duties as the cyclone outlet or feed into the high pressure line.

8. Check whether the cyclone has a clear exit. If there are intermittent or periodic discharges, allow for a clear buffer capacity to avoid interfering with cyclone operations.

9. Take into account the pressure drop on the supply line to the blower. Include any filters, mufflers, sound boxes or compressor housings to allow and extend the supply run, as may be appropriate. Be sure to compensate for the temperature increase due to gas compression.

10. Provide adequate instrumentation; this is essential to understand what is going on and to facilitate proper investigation of any issues that may arise.

  • Categories:News Center
  • Time of issue:2022-05-06 10:21
  • Views:
Information

Negative pressure pneumatic conveying equipment price, price of negative pressure pneumatic conveying system, how much is negative pressure pneumatic conveyor? What are the main points of a dilute phase pneumatic conveying system?

1. Do not use sloping pipes, backflow (backflow and retransmission of the same material) will require the pipe to retransmit the product that slips back above the normal load, and the effect is cumulative. At best, it increases the delivery load, but is more likely to cause blockages.

2. The negative pressure pneumatic conveying equipment sets a "reasonable" horizontal conveying length before the first bend, so as to accelerate the bulk material to a stable conveying speed and reduce the section loading of conveying pipes. The material that is decelerated due to bending occupies a larger proportion of the cross-sectional area of the duct, thereby providing more obstruction to the air flow, thereby increasing the pressure drop of the negative pressure pneumatic conveying system.

3. For reasons similar to those above, do not install elbows tightly on the pipe.

科里时丨负压气力输送系统运行注意事项有哪些?

 

4. Consider stepping through the pipeline in a long run. Air expands as pressure drops, so velocity inevitably increases during constant pipe operation. Higher material velocities increase wear and product degradation at bends.

5. In a dilute phase system, "more air" allows "less transport capacity". Greater solid and gas frictional losses due to higher gas velocities can absorb more energy relative to the additional energy input. For a given lean phase flow system, there is an optimum gas flow rate. Ask an expert to check for correct solids-to-gas ratio balance and optimum performance.

6. There is a lot of product damage and wear at the bend. Usually has many advantages, but results in a higher pressure drop than long radius bends.

科里时丨负压气力输送系统运行注意事项有哪些?

 

7. The rotary valve does leak, and also through the air differential through the return empty pocket. They also tend to fill up with product on one side of the valve, as the empty pockets are rotated to make room for material to flow. Gas backflow and feed bias cause many feed problems. Make sure the valve is properly ventilated and the feed channel is of good form for flow across the entire section. A short inlet riser is useful for such duties as the cyclone outlet or feed into the high pressure line.

8. Check whether the cyclone has a clear exit. If there are intermittent or periodic discharges, allow for a clear buffer capacity to avoid interfering with cyclone operations.

9. Take into account the pressure drop on the supply line to the blower. Include any filters, mufflers, sound boxes or compressor housings to allow and extend the supply run, as may be appropriate. Be sure to compensate for the temperature increase due to gas compression.

10. Provide adequate instrumentation; this is essential to understand what is going on and to facilitate proper investigation of any issues that may arise.

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