Patents-Review.com
ClassID:

160341 ⎘

F25J2200/38 - CPC Classification

Classification description:

Processes or apparatus using separation by rectification using pre-separation or distributed distillation before a main column system, e.g. in a at least a double column system

Recent Application in this class:
#1
20240200869
2024-06-20

PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON

 #2
20230384027
2023-11-30

PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHANE AND AIR GASES, FACILITY FOR PRODUCING BIOMETHANE BY PURIFICATION OF BIOGASES DERIVED FROM NON-HAZARDOUS WASTE STORAGE FACILITIES (NHWSF) IMPLEMENTING THE PROCESS

 #3
20210180863
2021-06-17

System and method for separating methane and nitrogen with reduced horsepower demands

 #4
20210131729
2021-05-06

Hydrocarbon gas processing

 #5
20210131728
2021-05-06

PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON

 #6
20210116174
2021-04-22

HYDROCARBON GAS PROCESSING

 #7
20210088274
2021-03-25

Pretreatment, pre-cooling, and condensate recovery of natural gas by high pressure compression and expansion

 #8
20200318896
2020-10-08

Process for cryogenic separation of a feed stream containing methane and air gases, facility for producing biomethane by purification of biogases derived from non-hazardous waste storage facilities (NHWSF) implementing the process

 #9
20200208911
2020-07-02

METHOD FOR PRODUCING A METHANE-RICH STREAM AND A C2+ HYDROCARBON-RICH STREAM, AND ASSOCIATED EQUIPMENT

 #10
20200088466
2020-03-19

Helium extraction from natural gas

 #11
20190041126
2019-02-07

Systems and methods for multi-stage refrigeration

 #12
20190003766
2019-01-03

System and method for rare gas recovery

 #13
20180356152
2018-12-13

System and method for enhanced argon recovery from a feed stream comprising hydrogen, methane, nitrogen and argon

 #14
20180231304
2018-08-16

Systems and methods for multi-stage refrigeration

 #15
20180202713
2018-07-19

Method and system for cooling and separating a hydrocarbon stream

 #16
20180180355
2018-06-28

Systems and methods for multi-stage refrigeration

 #17
20180058757
2018-03-01

Process and apparatus for producing carbon monoxide

 #18
20170268820
2017-09-21

System and method for argon recovery from a feed stream comprising hydrogen, methane, nitrogen and argon

 #19
20170159978
2017-06-08

Systems and methods for multi-stage refrigeration

 #20
20170122661
2017-05-04

System and method for argon recovery from the tail gas of an ammonia production plant

 #21
20140290307
2014-10-02

Method for producing a methane-rich stream and a C hydrocarbon-rich stream, and associated equipment

 #22
20120097520
2012-04-26

PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN

 #23
20120000246
2012-01-05

Liquefied natural gas and hydrocarbon gas processing

 #24
20110277500
2011-11-17

Nitrogen removal from natural gas

 #25
20110041551
2011-02-24

PROCESS FOR SEPARATING OFF NITROGEN

 #26
20100287985
2010-11-18

Liquefied Natural Gas And Hydrocarbon Gas Processing

 #27
20100287982
2010-11-18

Liquefied Natural Gas and Hydrocarbon Gas Processing

 #28
20100217059
2010-08-26

Process for Recovering Ethylene From an Autothermal Cracking Reactor Effluent

 #29
20100037656
2010-02-18

Krypton and xenon recovery method

 #30
20090282865
2009-11-19

Liquefied Natural Gas and Hydrocarbon Gas Processing

 #31
20070193303
2007-08-23

Scalable capacity liquefied natural gas plant

 #32
20060111602
2006-05-25

Removing diamondoid components from natural gas at reduced temperatures

 #33
20060043000
2006-03-02

Combined use of external and internal solvents in processing gases containing light, medium and heavy components

 #34
20060021379
2006-02-02

Secondary deethanizer to debottleneck an ethylene plant

 #35
20050154245
2005-07-14

Hydrogen recovery in a distributed distillation system