What is the principle of action of the DEAR Liquid air separation unit (section-2 or section-3 valve) and how does it work?

According to the different ways in which refrigeration causes low temperatures, the cooling capacity can be divided into three ways

The energy saving in liquid air separation plants improves the efficiency of the air compressor and consumes energy mainly in the air compressor and the circulating nitrogen press. In liquid air separation plants, the cold volume of liquid air separation plant is utilised in sections. The cold volume in the high temperature zone is pre-cooled by a glycol solution, and the compressed air of the air compressor allows the inlet temperature of each stage of the air compressor to be reduced from the ...