Device for the low-temperature separation of air
US9228778B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Aug 9, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2265/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an apparatus for the low-temperature separation of air and comprises a main heat exchanger (6) having at least two heat-exchanger blocks, a distillation column system for nitrogen-oxygen separation (5) having at least one high-pressure column, a subcooling-counterflow heat exchanger (2), means for introducing feed air via the main heat exchanger (6) into the high-pressure column, means for introducing a liquid stream from the distillation column system into the subcooling-counterflow heat exchanger (2), and means for introducing a gas stream (16) from the distillation column system into the subcooling-counterflow heat exchanger (2). The main heat exchanger (6) and the subcooling-counterflow heat exchanger (2) are arranged in a first cold box (12), and the subcooling-counterflow heat exchanger (2) is suspended from the main heat exchanger (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.