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1. US20140053601 - Method and apparatus for separating air by cryogenic distillation

Office
États-Unis d'Amérique
Numéro de la demande 14110356
Date de la demande 05.04.2012
Numéro de publication 20140053601
Date de publication 27.02.2014
Numéro de délivrance 09696087
Date de délivrance 04.07.2017
Type de publication B2
CIB
F25J 3/04
FMÉCANIQUE; ÉCLAIRAGE; CHAUFFAGE; ARMEMENT; SAUTAGE
25RÉFRIGÉRATION OU REFROIDISSEMENT; SYSTÈMES COMBINÉS DE CHAUFFAGE ET DE RÉFRIGÉRATION; SYSTÈMES À POMPES À CHALEUR; FABRICATION OU EMMAGASINAGE DE LA GLACE; LIQUÉFACTION OU SOLIDIFICATION DES GAZ
JLIQUÉFACTION, SOLIDIFICATION OU SÉPARATION DES GAZ OU DES MÉLANGES GAZEUX PAR PRESSION ET PAR LE FROID
3Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification
02par rectification, c. à d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide
04pour l'air
CPC
F25J 3/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
F25J 3/0406
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
04006Providing pressurised feed air or process streams within or from the air fractionation unit
04048by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
0406of nitrogen
F25J 3/0409
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
04006Providing pressurised feed air or process streams within or from the air fractionation unit
04078providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
0409of oxygen
F25J 3/04181
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
04151Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
04163Hot end purification of the feed air
04169by adsorption of the impurities
04181Regenerating the adsorbents
F25J 3/04206
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
04151Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
04187Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
04193Division of the main heat exchange line in consecutive sections having different functions
04206including a so-called "auxiliary vaporiser" for vaporising and producing a gaseous product
F25J 3/04224
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
3Processes or apparatus for separating the constituents of gaseous ; or liquefied 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
04151Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
04187Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
04218Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
04224Cores associated with a liquefaction or refrigeration cycle
Déposants Benoit Davidian
L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
Richard Dubettier-Grenier
Loïc Joly
Inventeurs Benoit Davidian
Richard Dubettier-Grenier
Loïc Joly
Mandataires Justin K. Murray
Données relatives à la priorité 1153070 08.04.2011 FR
Titre
(EN) Method and apparatus for separating air by cryogenic distillation
Abrégé
(EN)

A method for separating air is provided, in which a flow of oxygen-rich liquid is sent to a top of a pure oxygen column, having a pure oxygen reboiler, in which said flow is purified in order to form a vessel liquid containing at least 98 mol % of oxygen and the vessel liquid is drawn off as a product. A supercharged airflow at a second pressure is sent to the pure oxygen reboiler and to a liquid oxygen vaporizer; a nitrogen-rich gas is drawn from the top of the medium-pressure column and sent to an intermediate reboiler of the low-pressure column and the condensed gas is sent to the top of the medium-pressure column; and a nitrogen-rich gas or air is sent to a vessel reboiler of the low-pressure column and the liquid that condenses therein is sent to the medium-pressure column.