F25J3/04406 - CPC Classification Index

ClassID:

160220 ⎘

F25J3/04406 - CPC Classification

Classification description:

Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system

Sub-classes:

F25J3/04412 » {in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column} 325
F25J3/04418 » {with thermally overlapping high and low pressure columns} 18
F25J3/04424 » {without thermally coupled high and low pressure columns, i.e. a so-called split columns} 16
F25J3/0443 » {A main column system not otherwise provided, e.g. a modified double column flowsheet} 24

Recent Application in this class:

20250257941

AIR SEPARATION UNIT

20240011705

GAS SEPARATION METHOD USING DEEP COOLING PROCESS

20230090158

METHOD AND APPARATUS FOR CRYOGENIC AIR SEPARATION

20220325952

METHOD AND APPARATUS FOR PRODUCING PRODUCT NITROGEN GAS AND PRODUCT ARGON

20210404741

Method for improved startup of an air separation unit having a falling film vaporizer

20210381762

Method for obtaining one or more air products, and air separation unit

20210310732

Product gas supply quantity adjustment device and air separation apparatus comprising same

20210116175

System and method for the production of argon in an air separation plant facility or enclave having multiple cryogenic air separation units

20200149807

System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit

20190331419

System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit

20190331417

System and method for enhanced recovery of argon and oxygen from a nitrogen producing cryogenic air separation unit

20190293347

METHOD AND APPARATUS FOR PRODUCING PRODUCT NITROGEN GAS AND PRODUCT ARGON

20190049178

METHOD FOR DE-ICING A DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION AND DEVICE ADAPTED TO BE DE-ICED USING THIS METHOD

20190049177

Apparatus and method for separation of air by cryogenic distillation

20190041130

Method and device for separating air by cryogenic distillation

20190041129

Device and method for separating air by cryogenic distillation

20130269387

Process and apparatus for the separation of air by cryogenic distillation

20130205831

Method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air