What are the consequences of long-distance transportation of polypropylene? Will it vaporize?
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I came across a question: does compressed polypropylene liquid vaporize during long-distance transportation? Why does this happen? Will the speed keep increasing?
No, because at this point the compressed polypropylene liquid actually exists in two states simultaneously (powder + propylene gas), so it is in a gaseous state
Regarding the polypropylene powder on the second floor, it is transported via gas flow. During this transportation process, friction between the particles and the pipe walls causes the temperature to rise and the pressure to drop; as a result, the volume of the gas expands and its flow rate increases. The original poster is probably asking about the transportation of liquid propylene – propylene at room temperature is liquefied under pressure for transportation, and this is the most commonly used method in petrochemical plants. You might want to ask the person sitting right behind you.
So in that case, vaporization is understandable, but is the increase in flow rate due to the fact that it is a gas?
After vaporization, the flow rate of the gas increases, but since the pipe diameter remains unchanged, the flow velocity must increase as well
The young man made a very good point. After learning about SOGA, I realized that you are actually the guy who was right behind me
Incidentally, during transportation, friction between the particles and the pipe walls causes the temperature to rise and the pressure to drop; as a result, the volume of the gas expands and its flow rate increases. There should be an increase in pressure in these words. . .