Control systems for argon fractions in small air separation units

In the field of air separation, entropy is the core thermodynamic parameter to measure the energy quality and irreversibility of the system, which directly determines the energy consumption level and operation efficiency of the unit. Entropy, with the symbol s, is essentially a measure of the degree of chaos and energy unavailability of a system, in kj/(kg ・ K). The second law of thermodynamics clearly states that the total entropy of an isolated system only increases but does not decrease, that is, the principle of entropy increase. The higher the entropy, the lower the energy quality, and the more difficult it is to convert into cold energy or useful work; The smaller the entropy, the more orderly the energy, and the more sufficient the available energy. The essence of air separation unit is the combination of cryogenic refrigeration and distillation separation, and the whole process is closely related to entropy. The ideal reversible process is an isentropic process, and the entropy

DEAR air separation adopts the "software and hardware integration" scheme to implement the energy-saving transformation of air separation. Under normal conditions, the transformation can reduce the power consumption by about 15%. The cooperation supports the EMC (energy management contract) mode. The customer does not need to invest in advance, and the two sides share the saved electricity revenue.