METHOD OF PRODUCING AIR GASES BY CRYOGENIC AIR SEPARATION Russian patent published in 2021 - IPC F25J3/04 

FIELD: technological processes.

SUBSTANCE: method and device for producing air gases by cryogenic air separation, steps of transmitting a stream of cleaned and compressed air into a refrigerating chamber for cryogenic separation of the air stream into an oxygen product and nitrogen using a column system, extraction of oxygen product at product pressure, delivery of oxygen product at oxygen delivery pressure to pipeline. Cleaned and compressed air flow is under supply pressure at ingress into the column system. Oxygen pipeline has pressure of the pipeline. Pipeline pressure is monitored and reduced difference between pipeline pressure and delivery pressure.

EFFECT: due to dynamic operation energy saving can be realized in cases, when pressure of pipeline deviates from its highest value.

13 cl, 3 dwg