ClassID:

160337

F25J2200/20 - CPC Classification

Classification description:

Processes or apparatus using separation by rectification in an elevated pressure multiple column system wherein the lowest pressure column is at a pressure well above the minimum pressure needed to overcome pressure drop to reject the products to atmosphere

Recent Application in this class:
#1
20240183610
2024-06-06

METHOD AND PLANT FOR LOW TEMPERATURE FRACTIONATION OF AIR

#2
20240035741
2024-02-01

AIR SEPARATION UNIT AND METHOD FOR CRYOGENIC SEPARATION OF AIR USING A DISTILLATION COLUMN SYSTEM INCLUDING AN INTERMEDIATE PRESSURE KETTLE COLUMN

#3
20240035740
2024-02-01

AIR SEPARATION UNIT AND METHOD FOR CRYOGENIC SEPARATION OF AIR USING A DISTILLATION COLUMN SYSTEM INCLUDING AN INTERMEDIATE PRESSURE KETTLE COLUMN

#4
20240019206
2024-01-18

CRYOGENIC PROCESS FOR RECOVERING VALUABLE COMPONENTS FROM A HYDROGEN-RICH FEED GAS

#5
20230358468
2023-11-09

PROCESS AND APPARATUS FOR CRYOGENIC SEPARATION OF AIR WITH MIXED GAS TURBINE

#6
20230168030
2023-06-01

PROCESS FOR CRYOGENIC FRACTIONATION OF AIR, AIR FRACTIONATION PLANT AND INTEGRATED SYSTEM COMPOSED OF AT LEAST TWO AIR FRACTIONATION PLANTS

#7
20230103843
2023-04-06

LOW-PRESSURE NITROGEN TURBINE WITH AIR BOOSTER PARALLEL TO THE BOOSTER AIR COMPRESSOR

#8
20230034371
2023-02-02

Energy-efficient process for preparing nitrogen and oxygen for glass melting furnace

#9
20230022033
2023-01-26

Process to separate nitrogen from methane by permeation and cryogenic distillation

#10
20210381762
2021-12-09

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

#11
20190242646
2019-08-08

Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air

#12
20180017322
2018-01-18

Method and apparatus for producing compressed nitrogen and liquid nitrogen by cryogenic separation of air

#13
20160298900
2016-10-13

Process and apparatus for separating air by cryogenic distillation

#14
20160245586
2016-08-25

Method and device for separating air by cryogenic distillation

#15
20150369534
2015-12-24

Natural gas isobaric liquefaction apparatus

#16
20150362250
2015-12-17

Natural gas isobaric liquefaction apparatus

#17
20150354888
2015-12-10

Air separation apparatus to produce oxygen and nitrogen through isobaric separation

#18
20150283497
2015-10-08

Air compression system and method

#19
20130312427
2013-11-28

Air compression system and method

#20
20130139547
2013-06-06

AIR SEPARATION METHOD AND APPARATUS

#21
20130139546
2013-06-06

AIR SEPARATION METHOD AND APPARATUS

#22
20130047666
2013-02-28

METHOD AND DEVICE FOR OBTAINING PRESSURIZED NITROGEN AND PRESSURIZED OXYGEN BY LOW-TEMPERATURE SEPARATION OF AIR

#23
20130042647
2013-02-21

Production Of High-Pressure Gaseous Nitrogen

#24
20130042646
2013-02-21

Production of high-pressure gaseous nitrogen

#25
20130000351
2013-01-03

Production Of High-Pressure Gaseous Nitrogen

#26
20120144861
2012-06-14

Process and installation for producing high-pressure nitrogen

#27
20110083469
2011-04-14

Process and Device for Obtaining Liquid Nitrogen by Low Temperature Air Fractionation

#28
20100043490
2010-02-25

Method and apparatus for separating air

#29
20100037656
2010-02-18

Krypton and xenon recovery method

#30
20090178408
2009-07-16

Thermal integration of oxygen plants

#31
20090071191
2009-03-19

Cryogenic air separation process with excess turbine refrigeration

#32
20090013869
2009-01-15

PROCESS AND DEVICE FOR PRODUCING A PRESSURIZED GASEOUS PRODUCT BY LOW-TEMPERATURE SEPARATION OF AIR

#33
20080264101
2008-10-30

Process and Apparatus for Nitrogen Production

#34
20080127676
2008-06-05

Method and apparatus for production of high-pressure nitrogen from air by cryogenic distillation

#35
20080110203
2008-05-15

Cryogenic process system with extended bonnet filter

#36
20070170624
2007-07-26

Method for renovating a combined blast furnace and air/gas separation unit system

#37
20070095100
2007-05-03

Cryogenic air separation process with excess turbine refrigeration

#38
20060075779
2006-04-13

Process for the cryogenic distillation of air

#39
20050234278
2005-10-20

Integrating an air separation unit into an oxygenate-to-olefins reaction system

#40
20050193765
2005-09-08

Process for separating air by cryogenic distillation and installation for implementing this process

#41
20050138960
2005-06-30

Cryogenic air separation system for producing elevated pressure nitrogen