ОТРИМАННЯ КРИПТОНУ І КСЕНОНУ ВИСОКОЇ ЧИСТОТИ

Air separation products (ASPs) are an important component of many technological processes. The main industrial source of rare gases is atmospheric air. Inert gases are extracted in the form of lean concentrates during the operation of high-performance air separation plants. The presented work examines the features of rectification and adsorption-distillation technologies for the production of krypton and xenon. Currently, in the air of industrial cities there is a whole "bouquet" of harmful compounds present in significant quantities, formed as by-products as a result of the implementation of various technological processes. In the process of producing high-purity inert gases, along with Kr and Xe, air components similar in properties to them are enriched. Methods for purifying intermediate products and pure inert gases from three groups of substances: hydrocarbons; oxides of nitrogen and carbon; fluorinated gases. Purification of the krypton-xenon mixture from flammable impurities, as a rule, is carried out at all stages of the technological sequence. Hydrocarbons are separated by chemical methods, nitrogen and carbon oxides are separated by sorption. Condensation and chemical methods are promising methods for purifying krypton and xenon mixtures from fluorine-containing impurities. They provide the specified quality of gas products and a high degree of recovery. [ABSTRACT FROM AUTHOR]