Title:
COMBINED ADJUSTABLE-FLOW RATE NITROGEN AND OXYGEN PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/1993/011395
Kind Code:
A1
Abstract:
An air flow is processed after being compressed (at 6), cooled (at 5) and dried (at 3, 4) in a cryogenic distillation separation unit (1) producing a flow of nitrogen (at 7), and the oxygen-enriched residual gases (8) are partially conveyed (via 12) to the inlet of an adsorption separation unit (16) of which the outlet (22) substantially delivers oxygen. If the oxygen flow rate is too low, additional air is injected (at 24, 24'). If the oxygen flow rate is too high, the excess flow of residual gases in drawn off (at 25). This apparatus provides separate, fully adjustable nitrogen and oxygen flows at low cost.
Inventors:
ENGLER YVES (FR)
PETRIE WILFRID (FR)
MONEREAU CHRISTIAN (FR)
PETRIE WILFRID (FR)
MONEREAU CHRISTIAN (FR)
Application Number:
PCT/FR1992/001058
Publication Date:
June 10, 1993
Filing Date:
November 13, 1992
Export Citation:
Assignee:
AIR LIQUIDE (FR)
International Classes:
C01B13/02; C01B21/04; F25J3/04; B01D53/04; (IPC1-7): C01B13/02; C01B21/04; F25J3/04
Foreign References:
| EP0456575A1 | 1991-11-13 | |||
| GB2190477A | 1987-11-18 | |||
| FR2280043A1 | 1976-02-20 | |||
| GB2021748A | 1979-12-05 |
Attorney, Agent or Firm:
LE MOENNER, Gabriel (FR)
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