Production of High-Purity Krypton and Xenon. Purification from Trace Impurities

Отримання Криптону І Ксенону Високої Чистоти

“…Below we list the main promising sources of xenon production, the use of which until recently was unprofitable [2,[7][8][9][10][11][12][13].…”

“…For reasons of explosion safety, "dirty" oxygen is removed at the "tail" of the technological scheme of such installations, which, in addition to hydrocarbons, contains quite acceptable amounts of Kr and Xe [5][6][7][8][9]. Their volumetric content is an order of magnitude lower than in the primary concentrate, so in this case it is economically feasible to produce only one of the heavy inert gases -xenon.…”

“…Chlorofluorocarbons, widely used in various sectors of the national economy, when released into the stratosphere, lead to the destruction of the planet's ozone layer. The total emissions of gases polluting the atmosphere in 2000 already amounted to about 42 billion tons of CO2 equivalent [7].…”

“…Typically, gas enterprises produce excess volumes of technical gases and are interested in the fullest use of raw materials. Due to the steady increase in demand for inert gases, this area of the gas business is currently one of the most promising [7].…”

“…When using Al2O3 on a NaX zeolite substrate, the operating temperature is 600 °C (Table 4) [5]. By selecting the filler, it is possible to reduce the temperature in the reactor by 100...200 °C [7]. The choice of the most effective catalyst for burning hydrocarbons from a krypton-xenon mixture largely depends on its economic indicators.…”