Elevated pressure air separation cycles with liquid production

F - Mech Eng,Light,Heat,Weapons – 25 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F25J 3/04 (2006.01)

Patent

CA 2068181

The present invention relates to an improvement to a cryogenic process for the separation of air into its constituent components. In the process, a distillation column system having at least two distillation columns, a high pressure distillation column and a low pressure column is used; these two distillation columns are in thermal communication with each other. The low pressure column of the distillation column system operates at a pressure between 9 to 75 psig and a nitrogen product is produced from the top section thereof. At least 50% of the air to the distillation column system is removed as this nitrogen product, which has a nitrogen concentration of at least 95% and is at a pressure of at least 9 psig. The improvement to the process is a series of steps which allows for the production of liquid products from the cryogenic process in an efficient manner. These steps are primarily the partial warming of the nitrogen product, its subsequent isentropic expansion and use of the inherent refrigeration of the expanded nitrogen. These steps can be carried out in three ways.

La présente invention porte sur une amélioration apportée à un procédé cryogénique pour la séparation de l'air en ses éléments constituants. Dans le procédé, on utilise un système à colonnes de distillation comportant au moins deux colonnes de distillation, une colonne de distillation à haute pression et une colonne à basse pression; cesdeux colonnes de distillation sont en communication thermique l'une avec l'autre. La colonne à basse pression du système à colonnes de distillation fonctionne à une pression manométrique comprise entre 9 et 75 lb/po2 et sa partie supérieure fournit un produit contenant de l'azote. Au moins 50 % de l'air amené au système à colonnes de distillation en ressort sous forme de ce produit contenant de l'azote, lequel a une concentration d'azote d'au moins 95 % et se trouve à une pression d'au moins 9 lb/po2. L'amélioration apportée au procédé est une série d'étapes permettant la production efficace de produits liquides à partir du procédé cryogénique. Ces étapes comprennent essentiellement le réchauffement partiel du produit contenant de l'azote, son expansion isentropique subséquente et l'utilisation du refroidissement inhérent à l'azote dilaté. Ces étapes peuvent se réaliser de trois manières.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Elevated pressure air separation cycles with liquid production does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevated pressure air separation cycles with liquid production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevated pressure air separation cycles with liquid production will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2021069

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.