ClassID:

30318

B01D2252/20436 - CPC Classification

Classification description:

Absorbents, i.e. solvents and liquid materials for gas absorption; Organic absorbents; Amines Cyclic amines

Sub-classes:
Recent Application in this class:
#1
20250288948
2025-09-18

Performance-Enhanced Sulfur Scavenging Compositions

#2
20250073668
2025-03-06

CARBON DIOXIDE SORBENT MOLECULES, PROCESSES OF MAKING, AND USES

#3
20250059036
2025-02-20

MAKING FT PRODUCTS AFTER STREAM REFORMING AND HYDROCARBON REFORMING

#4
20240425446
2024-12-26

DICHLOROMETHANE-FREE SYNTHESIS OF CYCLOPROPENIMINES

#5
20240207783
2024-06-27

USE OF MELAMINE CYANURATE NANOPARTICLES AND SILICA NANOPARTICLES FOR H2S SCAVENGING

#6
20240139680
2024-05-02

USE OF SILICA NANOPARTICLES WITH TRIAZINE FOR H2S SCAVENGING

#7
20240123397
2024-04-18

ABSORBER AGENT FOR CARBON DIOXIDE DERIVED FROM ATMOSPHERE

#8
20230391618
2023-12-07

Method of generating clean syngas

#9
20230321597
2023-10-12

Method and Scavenging Mixture for Removing Hydrogen Sulfide from a Gas Stream

#10
20230182069
2023-06-15

HYDROGEN SULFIDE SCAVENGING COMPOSITIONS WITH SUPRAMOLECULAR STRUCTURES AND METHODS OF USE

#11
20230104687
2023-04-06

NOVEL AMINE COMPOUND, ACID GAS ABSORBENT, METHOD FOR REMOVING ACID GAS, AND ACID GAS REMOVAL APPARATUS

#12
20220098036
2022-03-31

Method of producing a cooled syngas of improved quality

#13
20220072472
2022-03-10

Solvent composition for COcapture and a process mediated thereof

#14
20220008864
2022-01-13

HS gas scrubbing and monitoring system for laboratory applications

#15
20210213386
2021-07-15

Decontamination of sulfur contaminants from a vessel

#16
20210197116
2021-07-01

METHOD OF SCAVENGING ACID SULFIDE SPECIES

#17
20200206684
2020-07-02

Decontamination of sulfur contaminants from a vessel

#18
20200173266
2020-06-04

Method and system for removing contaminants from a gas stream using a liquid absorbent

#19
20200030739
2020-01-30

Cyclic amine for selectively removing hydrogen sulphide

#20
20190210874
2019-07-11

Method of producing sulfur-depleted syngas

#21
20190210873
2019-07-11

Conditioned syngas composition, method of making same and method of processing same to produce fuels and/or fischer-tropsch products

#22
20190151794
2019-05-23

Composite amine absorbing solution, and device and method for removing CO2 or H2S or both

#23
20190083922
2019-03-21

Carbon dioxide absorbent and apparatus of separating and recovering carbon dioxide

#24
20190039015
2019-02-07

Metal-organic frameworks appended with cyclic diamines for carbon dioxide capture

#25
20190010050
2019-01-10

Unconditioned syngas composition and method of cleaning up same for fischer-tropsch processing

#26
20190002768
2019-01-03

Nitrogen based hydrogen sulfide scavengers and method of use thereof

#27
20180362858
2018-12-20

Compact contacting systems and methods for scavenging sulfur-containing compounds

#28
20180353900
2018-12-13

Decontamination of sulfur contaminants from a vessel

#29
20180272271
2018-09-27

Cyclic amine for selectively removing hydrogen sulphide

#30
20180257024
2018-09-13

Capture and release of acid gasses using tunable organic solvents with binding organic liquids

#31
20180050909
2018-02-22

Method for converting biomass into fischer-tropsch products with carbon dioxide recycling

#32
20180044598
2018-02-15

Method of reducing hydrogen sulfide levels in gaseous mixtures using triazines

#33
20170312681
2017-11-02

PROCESS AND APPARATUS FOR SEPARATING ENTRAINED AMINES FROM A GAS STREAM

#34
20170275546
2017-09-28

PROCESS FOR THE REMOVAL OF H2S FROM SOUR GAS WHILE LIMITING SCAVENGING CHEMICALS

#35
20170246587
2017-08-31

Carbon dioxide absorbent comprising triamine

#36
20170246586
2017-08-31

PROCESS AND APPARATUS FOR SEPARATING ENTRAINED AMINES FROM A GAS STREAM

#37
20170166446
2017-06-15

Method for syngas clean-up of semi-volatile organic compounds with metal removal

#38
20170152140
2017-06-01

Method for syngas clean-up of semi-volatile organic compounds with carbonyl sulfide removal

#39
20170152139
2017-06-01

Method for syngas clean-up of semi-volatile organic compounds with solids removal

#40
20170145125
2017-05-25

Component separations in polymerization

#41
20170128856
2017-05-11

Device for extraction of pollutants by multichannel tubular membrane

#42
20160297729
2016-10-13

Ethylene recovery by absorption

#43
20160289579
2016-10-06

Method of predicting/optimizing hydrogen sulfide scavenging capacity and reduction of scale formation

#44
20160263519
2016-09-15

Process for capturing sulfur dioxide from a gas stream

#45
20160166981
2016-06-16

Method of enhancing removal of gaseous contaminants from a feedstream in a treatment chamber having liquid medium

#46
20160152745
2016-06-02

Component separations in polymerization

#47
20160136568
2016-05-19

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

#48
20160023966
2016-01-28

Ethylene recovery by absorption

#49
20160008755
2016-01-14

Method and device for the treatment of a gas stream, in particular for the treatment of a natural gas stream

#50
20150267027
2015-09-24

Component separations in polymerization

#51
20150122120
2015-05-07

HYDROGEN SULFIDE CONTROL IN BIODIGESTION PROCESSES

#52
20140335003
2014-11-13

Carbon dioxide recovery system and operating method thereof

#53
20140154161
2014-06-05

Method and apparatus for hydrogen sulphide removal

#54
20130255496
2013-10-03

Ionic liquid solvent and gas purification method using the same

#55
20120312163
2012-12-13

Temperature swing adsorption process for the separation of target species from a gas mixture

#56
20120308456
2012-12-06

Selective sulfur removal process

#57
20120308451
2012-12-06

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

#58
20120294785
2012-11-22

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

#59
20120272824
2012-11-01

METHOD FOR DRYING NATURAL GAS BY THE JOINT COOLING OF SOLVENT AND NATURAL GAS

#60
20120251418
2012-10-04

Retention of amines in the removal of acid gases by means of amine absorption media

#61
20120232232
2012-09-13

Ethylene recovery by absorption

#62
20120232231
2012-09-13

Component separations in polymerization

#63
20120222555
2012-09-06

Gas purification process utilizing engineered small particle adsorbents

#64
20120222554
2012-09-06

Rapid temperature swing adsorption contactors for gas separation

#65
20120222553
2012-09-06

Pressure-temperature swing adsorption process

#66
20120222552
2012-09-06

Pressure-temperature swing adsorption process for the separation of heavy hydrocarbons from natural gas streams

#67
20120222551
2012-09-06

Swing adsorption processes utilizing controlled adsorption fronts

#68
20120095181
2012-04-19

Ethylene separation

#69
20120070353
2012-03-22

Process For Separating Off Acidic Gases By Means Of Metal-Organic Frameworks Impregnated With Amines

#70
20110296992
2011-12-08

Sulfur compounds for carbon dioxide and sulfur dioxide removal

#71
20110223086
2011-09-15

Aromatic amino compounds for carbon dioxide and sulfur dioxide removal

#72
20110150730
2011-06-23

Carbon dioxide sorbents

#73
20110130298
2011-06-02

Method of predicting/optimizing hydrogen sulfide scavenging capacity and reduction of scale formation

#74
18957981
2025-12-02

Systems and methods for recovery of amine solvent in COcapture plant

#75
13223488
2014-12-09

Method of purifying a gas stream using 1,2,3-triazolium ionic liquids