|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||95/103 ; 95/130|
|§371/§102 date||19930726 (19931013)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 33 인용 특허 : 0|
In a unit for the production of oxygen by separation of air by adsorption with regeneration of the adsorbers (1-5) under vacuum, the sub-atmospheric depressurization is ensured with rejection to the atmosphere by pumping with two successive pumping devices: one, for example of the type of a volumetric compressor (13), operates to a pressure of the order of 0.5×105 Pa absolute, while the other, for example of the type of a centrifugal compressor (14), operates alone to a pressure of the order of 0.2×105 Pa absolute.
In a process for the production of a gas with a substantial oxygen content by adsorption of nitrogen from air, with a plurality “n”of adsorbers, wherein there is successively and cyclically assured according to a period T, in each of said adsorbers, with a time offset of T/n, from one adsorber to the next: a) a production stage of said gas with a substantial content of oxygen by withdrawal of gas in a direction called co-current at high pressure, with admission of air; b) a depressurization stage incorporating a counter-current terminal pumping phase und...