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US 5,314,528 AGranted
Permeation process and apparatus
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorChristian Monereau
Life of this patent
Estimating the term…
Abstract
The apparatus includes two permeators mounted in series, namely a simple permeator with an inlet and two outlets, and a reflux permeator. The production gas results from the combination of the two permeated products. Application to the production of impure hydrogen.
Claims13
A process of obtaining production of an impure light gas by permeation from a gas mixture containing said light gas, comprising the steps of:
- providing a permeation apparatus comprising a first permeation stage including at least one permeator of a first type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet only, and a second permeation stage including at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an inlet and an outlet;
- introducing the gas mixture under pressure into the inlet of the high pressure side of a permeator of the first permeation stage;
- passing residual gas from the outlet of the high pressure side of a permeator of the first permeation stage to the inlet of the high pressure side of a permeator of the second permeation stage;
- withdrawing residual gas from the outlet of the high pressure side of a permeator of the second permeation stage;
- introducing into the inlet of the low pressure side of at least one permeator of the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production gas;
- and
- withdrawing permeate gas from the outlets of the low pressure sides of the permeators of the first and second permeation stages as said production gas.
4 more elements
An apparatus for the production of an impure light gas by permeation from a gas mixture containing said light gas, comprising:
- a first permeation stage comprising at least one permeator of a first type having a high pressure side with an inlet connectable to a source of said gas mixture and an outlet, and a low pressure side with an outlet only, said outlet of the low pressure side being connected to a product line supplying said impure light gas;
- a second permeation stage comprising at least one permeator of a second type having a high pressure side with an inlet and an outlet, and a low pressure side with an outlet connected to the product line and an inlet;
- means for connecting the outlet of the high pressure side of a permeator in the first permeation stage to the inlet of the high pressure side of a permeator in the second permeation stage;
- and
- means for supplying to the inlet of the low pressure side of the permeator in the second permeation stage a gas mixture having a light gas content lower than the light gas content of the production impure light gas available in the product line.
2 more elements
Dependencies are inferred from the claim text.