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1. WO2007088107 - METHOD FOR REGULATING A SERIES OF APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION AND SERIES OF APPARATUS FOR SEPARATING AIR OPERATING ACCORDING TO SAID METHOD

Publication Number WO/2007/088107
Publication Date 09.08.2007
International Application No. PCT/EP2007/050511
International Filing Date 18.01.2007
IPC
F25J 3/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
3Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification
02by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
04for air
B01D 53/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
02by adsorption, e.g. preparative gas chromatography
04with stationary adsorbents
B01D 53/047 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
02by adsorption, e.g. preparative gas chromatography
04with stationary adsorbents
047Pressure swing adsorption
CPC
B01D 2256/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2256Main component in the product gas stream after treatment
10Nitrogen
B01D 2256/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2256Main component in the product gas stream after treatment
12Oxygen
B01D 2256/16
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2256Main component in the product gas stream after treatment
16Hydrogen
B01D 2256/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2256Main component in the product gas stream after treatment
20Carbon monoxide
B01D 2256/245
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2256Main component in the product gas stream after treatment
24Hydrocarbons
245Methane
B01D 2257/80
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
80Water
Applicants
  • L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE [FR]/[FR] (AllExceptUS)
  • RAUCH, Jean-François [FR]/[FR] (UsOnly)
Inventors
  • RAUCH, Jean-François
Agents
  • MERCEY, Fiona
Priority Data
065033331.01.2006FR
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR REGULATING A SERIES OF APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION AND SERIES OF APPARATUS FOR SEPARATING AIR OPERATING ACCORDING TO SAID METHOD
(FR) PROCEDE DE REGLAGE D'UNE SERIE D'APPAREILS DE SEPARATION DE L'AIR PAR DISTILLATION CRYOGENIQUE ET D'UNE SERIE D'APPAREILS DE SEPARATION DE L'AIR FONCTIONNANT SELON LEDIT PROCEDE
Abstract
(EN)
In a method for regulating a series of apparatus for separating air by cryogenic distillation, the series comprising N air separation apparatus (1, 2, 3, 4), where N>1, an air gas having substantially the same composition is sent from the N apparatus to a consuming unit (5), each apparatus comprising a system of distillation columns (1 B, 2B, 3B, 4B) and an air purification unit (IA, 2A, 3A, 4A) of the type in which at least two adsorbers are used, each, with a phase shift, following the same cycle in which an adsorption phase, at a high cycle pressure, and a regeneration phase with depressurization, terminating in a repressurization of the adsorber, succeed one another, the method comprising a step in which the adsorbers of a unit are placed in parallel, each apparatus having an adsorption cycle time and the operation of at least some of the purification units is regulated so that the repressurization step for one apparatus begins at a different time from the beginning of the repressurization for another apparatus.
(FR)
La présente invention concerne un procédé de réglage d'une série d'appareils destinés à séparer de l'air par distillation cryogénique, ladite série comprenant un nombre N d'appareils de séparation de l'air (1, 2, 3, 4), où N>1. Selon le procédé, un gaz à l'air ayant sensiblement la même composition est envoyé des N appareils vers une unité de consommation (5), chaque appareil comprenant un système de colonnes de distillation (1B, 2B, 3B, 4B) et une unité de purification de l'air (1A, 2A, 3A, 4A) du type utilisant au moins deux adsorbeurs, chacun avec un décalage de phase, suivant le même cycle selon lequel une phase d'adsorption, à une pression de cycle élevée, et une phase de régénération avec dépressurisation, se succèdent l'une à l'autre, terminant par la repressurisation de l'adsorbeur. Le procédé comprend une étape dans laquelle les adsorbeurs d'une unité sont placés en parallèle, chaque appareil ayant un temps de cycle d'adsorption, et dans laquelle le fonctionnement d'au moins certaines unités de purification est réglé de sorte que l'étape de repressurisation d'un appareil démarre à une heure différente du début de la repressurisation d'un autre appareil.
Latest bibliographic data on file with the International Bureau