UNITED CRYOGENIC DISTILLATION AND ADSORPTION WITH VARIABLE PRESSURE - AVP FOR PRODUCTION OF ARGON Russian patent published in 2011 - IPC F25J3/04 

FIELD: machine building.

SUBSTANCE: procedure for production of argon product consists in withdrawal of argon containing fluid from first cryogenic distillation column, in rise of pressure of part of argon containing fluid, in delivery of at least part of compressed argon containing fluid into first end part of first vessel of adsorption with variable pressure, in completion of introduction of compressed argon containing fluid into first vessel of adsorption with variable pressure. Further, decompression gas is withdrawn from at least one of the first end part and middle part of the first vessel of adsorption with variable pressure, thus dropping pressure in the first vessel of adsorption with variable pressure to final pressure of decompression. Flow of part of decompression gas is controlled by admitting part of decompression gas into a device for decrease of pulsation of flow. At least part of decompression gas leaving the device for decrease of flow pulsation is introduced into at least one of the first cryogenic distillation column and device for pressure build-up.

EFFECT: stability of column of cryogenic distillation.

23 cl, 1 dwg