Method and apparatus for separating air by cryogenic distillation
US10012435B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Aug 28, 2013 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Oct 13, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J3/04812
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method for producing a first pressurized gas and a second gas on a one-off basis by cryogenic distillation of air, according to a first step, no fluid heats up or cools down in a second heat exchanger, and according to a second step, a flow of pressurized liquid from the double column heats up and vaporizes in the second exchanger to form a gas required on a one-off basis, a flow of air at the second pressure cools in the second exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.