Patents-Review.com
ClassID:

30324 ⎘

B01D2252/20468 - CPC Classification

Classification description:

Absorbents, i.e. solvents and liquid materials for gas absorption; Organic absorbents; Amines; Cyclic amines containing a pyrrolidone-ring

Recent Application in this class:
#1
20250339809
2025-11-06

Acid Gas Scrubbing Methods Featuring Amine Phase Separation for Hydrogen Sulfide Capture

 #2
20250115816
2025-04-10

FORMULATIONS AND METHODS TO REMOVE NON-ACIDIC SULFUR COMPOUNDS FROM GAS STREAMS

 #3
20240375047
2024-11-14

METHODS AND COMPOSITIONS FOR CARBON CAPTURE

 #4
20240278169
2024-08-22

PROCESS FOR THE REMOVAL OF ACID GASES, SPECIFICALLY CO2, FROM GASEOUS MIXTURES CONTAINING THEM THROUGH THE USE OF ABSORBENT COMPOSITIONS INCLUDING CYCLIC UREAS AS A PHYSICAL SOLVENT

 #5
20240189763
2024-06-13

CONTAMINANT REMOVAL PROCESS

 #6
20230321588
2023-10-12

PROCESS AND PLANT FOR REMOVING CARBON DIOXIDE FROM SYNTHESIS GAS

 #7
20230271128
2023-08-31

Method for reducing methane emissions from biogas upgrading

 #8
20230226483
2023-07-20

Acid Gas Scrubbing Methods Featuring Amine Phase Separation for Hydrogen Sulfide Capture

 #9
20220297052
2022-09-22

CONTAMINANT REMOVAL PROCESS

 #10
20220144634
2022-05-12

Process and plant for producing hydrogen and for separating carbon dioxide from synthesis gas

 #11
20220143546
2022-05-12

Process and plant for removing carbon dioxide from synthesis gas

 #12
20220089437
2022-03-24

Process for producing pure hydrogen with low steam export

 #13
20210403822
2021-12-30

Process for purifying a crude gas stream containing sulfur components and hydrocarbons

 #14
20210380409
2021-12-09

PROCESS FOR SEPARATION OF HYDROGEN AND OXYGEN PRODUCED FROM PHOTOCATALYTIC WATER SPLITTING BY ABSORPTION

 #15
20210046418
2021-02-18

Contaminant removal process

 #16
20210008490
2021-01-14

Process for aftertreatment of regeneration offgas

 #17
20200376428
2020-12-03

Acid gas absorbent, acid gas removal method, and acid gas removal device

 #18
20200290871
2020-09-17

Process for separation of hydrogen and oxygen produced from photocatalytic water splitting by absorption

 #19
20200269187
2020-08-27

Absorbent and process for selectively removing hydrogen sulfide

 #20
20200238213
2020-07-30

Absorption column having external heat exchange circuit

 #21
20190358579
2019-11-28

Acidic gas absorbent, acidic gas removal method and acidic gas removal apparatus

 #22
20190160422
2019-05-30

Acid gas absorbent, acid gas removal method, and acid gas removal device

 #23
20190001256
2019-01-03

Processes for gas separation by solvent or absorbent

 #24
20180327263
2018-11-15

Process and apparatus for treating a sour synthesis gas

 #25
20180326348
2018-11-15

METHODS AND APPARATUSES FOR GAS SEPARATION BY SOLVENT OR ABSORBENT

 #26
20180179460
2018-06-28

Configurations and methods of flexible CO2 removal

 #27
20180142175
2018-05-24

FOAM CONTROL OF GAS SWEETENING PROCESSES

 #28
20180017319
2018-01-18

Heavy hydrocarbon removal from lean gas to LNG liquefaction

 #29
20170190640
2017-07-06

Separation method and separation apparatus

 #30
20170145125
2017-05-25

Component separations in polymerization

 #31
20160369674
2016-12-22

Integrated process for COcapture and use in thermal power production cycle

 #32
20160297729
2016-10-13

Ethylene recovery by absorption

 #33
20160296878
2016-10-13

Sour syngas treatment apparatuses and processes for treating sour syngas comprising sulfur components and carbon dioxide

 #34
20160193560
2016-07-07

Optimization of stripper feed configuration for rich/lean solvent regeneration

 #35
20160152745
2016-06-02

Component separations in polymerization

 #36
20160136568
2016-05-19

Acidic gas absorbing agent, method for removing acidic gas and apparatus for removing acidic gas

 #37
20160023966
2016-01-28

Ethylene recovery by absorption

 #38
20150267027
2015-09-24

Component separations in polymerization

 #39
20150166915
2015-06-18

Configurations and methods of flexible CO2 removal

 #40
20150165366
2015-06-18

Method for selectively desulfurizing a crude synthesis gas

 #41
20150000525
2015-01-01

Apparatuses and methods for removing acid gas from sour gas

 #42
20140200373
2014-07-17

Formate based heat stable salt mitigation in physical solvent acid gas absorption processes

 #43
20140090556
2014-04-03

Method and system for gas purification with first direct absorption step and second absorption step by means of membrane contactor

 #44
20130056677
2013-03-07

Claus hydrocarbon destruction via staged solvent regeneration

 #45
20130032029
2013-02-07

Gas purification configurations and methods

 #46
20120232232
2012-09-13

Ethylene recovery by absorption

 #47
20120232231
2012-09-13

Component separations in polymerization

 #48
20120171095
2012-07-05

Liquid carbon dioxide absorbents, methods of using the same, and related systems

 #49
20120128561
2012-05-24

Acid gas absorbent composition

 #50
20120095181
2012-04-19

Ethylene separation

 #51
20110223087
2011-09-15

AMINO COMPOUNDS FOR CARBON DIOXIDE AND SULFUR DIOXIDE REMOVAL