PRESSURE EQUALIZATION SYSTEM FOR CLEANING DURING AIR SEPARATION AND CONTROL METHOD Russian patent published in 2021 - IPC F25J3/04 

FIELD: gas pipelines.

SUBSTANCE: present invention discloses a pressure equalization system for cleaning during air separation and a control method. The system contains: the first air trunk; the pressure-generating gas pipeline, which is connected to the first air trunk and is used to receive the pressure-generating gas and supply it to the first air trunk; and a control valve located on the pressure-generating gas pipeline and having an opening degree regulated by a flow regulator, by which the amount of gas entering the pressure-generating gas pipeline is regulated. Dry nitrogen is used to equalize the pressure in the adsorber; in the process of switching the inlet to the adsorption stage from the regeneration stage, the pressure-generating dry nitrogen used in the pressure equalization stage is pre-mixed with moist air from the main air compressor before entering the adsorber in such a way that the gas components flowing in the direction of the cold air separation compartment, they remain essentially unchanged in order to reduce violations of the conditions of gas intake into the distillation column for participation in rectification due to the gradual change of the gas component from dry nitrogen to dry air in the known technical level, which thereby stabilizes the conditions of the cold air separation compartment process.

EFFECT: present invention solves the problem associated with the process of air separation by distillation.

11 cl, 1 dwg