Pressure swing adsorption process for oxygen production

Details Pressure swing adsorption process for oxygen production Pressure swing adsorption process for oxygen production

B - Operations, Transporting

01

D

B01D 53/047 (2006.01)

Patent

CA 2627888

The present invention generally relates to large capacity (e.g., greater than 350 tons/day O2) vacuum pressure adsorption (VPSA) systems and processes that employ a single train including four beds (42, 44, 46, 48) , at least one feed compressor (36, 38) feeding two beds simultaneously at any given instant in time, and a single vacuum pump (52) . The compressor (s) and the vacuum pump can be utilized 100% of the time. Use of product quality gas for purging is avoided, with about 10-20% improvement in O2 productivity and 5-10% reduction in capital cost expected.

En règle générale, systèmes et procédés pour l'adsorption par pression sous vide haute capacité (par exemple, plus de 350 tonnes/jour d'O2), reposant sur l'utilisation d'un train unique à quatre lits (42, 44, 46, 48), avec au moins un compresseur d'alimentation (36, 38) alimentant simultanément deux lits à un moment donné, et une seule pompe à vide (52). Le(s) compresseur(s) et la pompe à vide peuvent être utilisés pendent 100 % du temps. On évite ainsi l'utilisation de gaz de qualité produit pour la purge, et on améliore par ailleurs de 10-20 % le rendement de la production d'O2 tout en réduisant de 5-10 % les coûts d'investissement.

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