|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||55/16 ; 55/18 ; 55/26 ; 55/68|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 33 인용 특허 : 0|
The waste gas of PSA-air separation operations is passed to a membrane system for enhanced recovery of a second product. By capturing the portion found to contain a high concentration of either nitrogen or oxygen in the waste stream, the efficiency of the overall separation is enhanced.
In a pressure swing adsorption process for the recovery of either oxygen or nitrogen as a high purity product in an adsorption system having at least one adsorbent bed containing adsorbent material capable of selectively adsorbing either oxygen or nitrogen as the more readily adsorbable component of feed air, said process comprising, on a cyclic basis in each bed, an adsorption/desorption/repressurization sequence in which product gas is recovered from the system and a waste stream is separately discharged therefrom, the improvement comprising: (a) separ...