Abstract: The invention relates to cryogenic technology, namely, to devices for obtaining components of gas mixtures by rectification method, particularly, neon isotopes. The device comprises housed in jackets rectification columns, forming connected in series head and N?1 consecutively installed sections, containing contact spaces, whose upper areas are connected with condensers, whose inner surfaces contact with the mixture to be separated in the rectification columns, and outer surfaces—with the cooling medium, which, through gas recuperative heat exchangers, are connected by the line of the working body return flow to the compressor and the working body separator with the connecting pipe of the gas phase, condensers are grouped into blocks of condensers in sections which have common cavities of the cooling medium and, at least, one of N installed sections consists of groups of nj (j=1 . . . N) rectification columns connected in parallel.

Abstract: The invention relates to cryogenic technology, namely, to devices for obtaining components of gas mixtures by rectification method, particularly, neon isotopes. The device comprises housed in jackets rectification columns, forming connected in series head and N?1 consecutively installed sections, containing contact spaces, whose upper areas are connected with condensers, whose inner surfaces contact with the mixture to be separated in the rectification columns, and outer surfaces—with the cooling medium, which, through gas recuperative heat exchangers, are connected by the line of the working body return flow to the compressor and the working body separator with the connecting pipe of the gas phase, condensers are grouped into blocks of condensers in sections which have common cavities of the cooling medium and, at least, one of N installed sections consists of nj (j=1 . . . N) rectification columns connected in parallel.

Abstract: The invention relates to inert gas production processes and can be used for producing a krypton/xenon mixture from a stream of oxygen recovered from air separation plants and containing 0.05-0.5% krypton and xenon. The method for producing a krypton/xenon mixture involves purifying a stream of gaseous primary concentrate by the catalytic combustion thereof and subsequently cooling same, purifying the primary concentrate of catalytic combustion products, carrying out cooling upon completion of purification, fractionating the primary concentrate in a rectification column to form a stream of krypton/xenon mixture and a stream of stripped oxygen and removing the stream of krypton/xenon mixture from the rectification column in the form of a target product, as well as purifying the krypton/xenon mixture of radon. The invention makes it possible to extend the scope of use of the krypton/xenon mixture.