Why is the pressure in the lower tower of the air separation equipment higher than that in the upper tower?

What are the driving forms for the compression mechanism of large-scale air separation equipment?

What are the requirements for the design of piping in the cold box of liquid air separation plant? The design of piping in the cold box ofiquid air separation plant is complex and troublesome, and each pipeline has its own process requirements. As one of the most complex components in the cold box of air separation equipment, low temperature piping is the key to ensure the stable and safe operation of small air separation unit. A set of air separation equipment in the cold / hot end of the plat...