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The role of the large-scale gas circulation in the chemical production cold drum
To understand the role of the large gas circulation in the chemical production cooling drum, you must know the role of the small gas circulation.
When the fan has a high capacity but the amount of gas to be transported is low, in order to ensure stable operation of the blower, a small-cycle regulation is employed, allowing some of the gas expelled by the blower to return to the intake pipe. However, the fan acts as an adiabatic compressor for the gas, causing its temperature to rise. The gas, which has been pressurized and heated, enters the intake pipe where it is compressed again, resulting in an even higher temperature. To prevent the bearing shells from being damaged by high temperatures, a large circulation system must be used. The gas forced out by the blower is sent through the large gas circulation pipe to the gas pipeline in front of the primary cooler. After cooling, it returns to the fan.
Can’t we use an inverter to adjust the fan’s speed?