ClassID:

28457

B01D3/34 - CPC Classification

Classification description:

Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances

Sub-classes:
Recent Application in this class:
#1
20260098006
2026-04-09

SYSTEMS FOR PURIFYING ACETONE

#2
20250257270
2025-08-14

WHITE ALKANES CREATED FROM NON-PETROLEUM, RENEWABLE SOURCES

#3
20250144545
2025-05-08

PURIFYING PRECURSOR COMPOUNDS AND RELATED SYSTEMS AND METHODS

#4
20250051164
2025-02-13

PROCESS FOR PREPARING HYDRAZINE HYDRATE IN THE PRESENCE OF AN ANTI-FOAMING AGENT

#5
20240387829
2024-11-21

METHOD FOR PREPARING A CATHODE OF A SECONDARY BATTERY AND A PURIFIED N-METHYL PYRROLIDONE, AND PURIFYING A WASTE N-METHYL PYRROLIDONE USING AN INHIBITOR

#6
20240376027
2024-11-14

METHOD FOR PURIFYING A FEEDSTOCK RESULTING FROM A METHOD FOR DEPOLYMERIZING STYRENE COMPOUNDS

#7
20240350940
2024-10-24

DISTILLATION COLUMN MINIMUM FLOW ARRANGEMENT

#8
20240336557
2024-10-10

METHOD FOR CONTINUOUSLY RECOVERING DIMETHYLFORMAMIDE FROM WASTE SOLUTION RESULTING FROM PRODUCTION OF POLYIMIDE

#9
20240238723
2024-07-18

Ammonia Mediated Carbon Dioxide (CO2) Sequestration Methods and Systems

#10
20240166959
2024-05-23

WHITE ALKANES CREATED FROM NON-PETROLEUM, RENEWABLE SOURCES

#11
20240076262
2024-03-07

RECOVERY OF 3-HYDROXYPROPIONIC ACID

#12
20240059641
2024-02-22

RECOVERY OF 3-HYDROXYPROPIONIC ACID

#13
20240059628
2024-02-22

Process for recovering close boiling products

#14
20240058723
2024-02-22

METHOD OF PURIFYING PHOSPHORUS COMPOUND AND METHOD OF REUSING THE SAME

#15
20240010937
2024-01-11

PROCESS FOR RECOVERY OF PYROLYSIS OIL EXTRACTION SOLVENT

#16
20230399352
2023-12-14

PRODUCTION APPARATUS AND PRODUCTION METHOD OF SUCROSE-6-ESTER

#17
20230392091
2023-12-07

Separation of sulfurous materials

#18
20230322648
2023-10-12

Composite adsorbent for separation of ethylbenzene by adsorption distillation and application thereof

#19
20230257666
2023-08-17

Method for creating white alkanes from non-petroleum renewable sources

#20
20230109749
2023-04-13

Method for purifying (meth)acrylic acid

#21
20230029844
2023-02-02

Ammonia mediated carbon dioxide (CO) sequestration methods and systems

#22
20220402839
2022-12-22

Process for separating out an effluent obtained from an oligomerization step

#23
20220389342
2022-12-08

Separation of sulfurous materials

#24
20220389333
2022-12-08

Disaggregation of biomass pyrolysis oil

#25
20220379234
2022-12-01

Methods for separating water and contaminants from valuable or harmful process liquids

#26
20220331710
2022-10-20

Distillation tower management system, distillation tower state analysis method and distillation tower management method

#27
20220212120
2022-07-07

IMPROVED DISTILLATION CAPABILITY BY DILUTION WITH A COMPONENT TO BE SEPARATED OFF

#28
20220161155
2022-05-26

METHOD FOR ELIMINATING PRESSURE DIFFERENCE IN DISTILLATION COLUMN

#29
20220153677
2022-05-19

Recovery of 3-hydroxypropionic acid

#30
20220153676
2022-05-19

Recovery of 3-hydroxypropionic acid

#31
20210355055
2021-11-18

Process for recovering close boiling products

#32
20210309924
2021-10-07

Disaggregation of biomass pyrolysis oil

#33
20210276944
2021-09-09

Method for diisocyanate recovery from distillation residues with bitumen

#34
20210236989
2021-08-05

Ammonia mediated carbon dioxide (CO2) sequestration methods and systems

#35
20210047261
2021-02-18

Method for producing methyl methacrylate

#36
20200308108
2020-10-01

Method of distilling dimethyl sulfoxide and multistage distillation tower

#37
20200299221
2020-09-24

Process for the purification of an unsaturated carboxylic acid

#38
20200255362
2020-08-13

Process for recovering close boiling products

#39
20200246722
2020-08-06

METHOD AND APPARATUS FOR EXTRACTING BOTANICAL OILS

#40
20200131122
2020-04-30

Method for recovering dimethyl sulfoxide from recovered resist remover

#41
20200115311
2020-04-16

Process for purifying (meth)acrylic acid including a dividing-wall distillation column

#42
20200048176
2020-02-13

Recovery of 3-hydroxpropionic acid

#43
20200039925
2020-02-06

Method for producing two isocyanates

#44
20200039913
2020-02-06

Recovery of 3-hydroxypropionic acid

#45
20200039843
2020-02-06

System and method to reboil a process stream in a distillation system by mixing the stream with a heating medium

#46
20190338207
2019-11-07

Separation of sulfurous materials

#47
20190314758
2019-10-17

Ammonia mediated carbon dioxide (CO) sequestration methods and systems

#48
20190300799
2019-10-03

Contaminant removal method for fractionating columns

#49
20190194553
2019-06-27

Process and apparatus for recovering hydrocracked soft pitch

#50
20190151771
2019-05-23

Method and apparatus for extracting botanical oils

#51
20190135736
2019-05-09

Process for reducing CPI in a dinitrile stream

#52
20190048120
2019-02-14

RESORCINOL RESINS AND COMPOSITIONS DERIVED THEREFORM

#53
20190030454
2019-01-31

Process to mitigate unwanted formation of popcorn polymers using acoustic emission signals

#54
20180297916
2018-10-18

POLYMERIZATION INHIBITING SYSTEM AND POLYMERIZATION INHIBITING METHOD

#55
20180244607
2018-08-30

Inhibiting CPI formation from adiponitrile

#56
20180215698
2018-08-02

Purification of cadaverine using high boiling point solvent

#57
20180162731
2018-06-14

System for manufacturing high purity sulfuric acid

#58
20180155313
2018-06-07

Method and device for manufacturing lactide

#59
20180134676
2018-05-17

Process for the epoxidation of propene

#60
20180119024
2018-05-03

METHODS FOR TREATING BITUMEN MIXTURES

#61
20180105489
2018-04-19

Separation method and method for producing isocyanate

#62
20180093198
2018-04-05

Process to control HI concentration in residuum stream

#63
20180002622
2018-01-04

Process of Making Biochar From Beneficiated Organic-Carbon-Containing Feedstock

#64
20170368471
2017-12-28

System and method to reboil a process stream in a distillation system by mixing the stream with a heating medium

#65
20170313591
2017-11-02

Polymerization Inhibitor for Silane

#66
20170312657
2017-11-02

DEFOAMING AGENT

#67
20170282093
2017-10-05

Evaporation system, evaporation method, and sealing system

#68
20170274318
2017-09-28

Ammonia mediated carbon dioxide (CO2) sequestration methods and systems

#69
20170247260
2017-08-31

Method for purifying halogenated oligosilanes

#70
20170225100
2017-08-10

DISTILLATION DEVICE

#71
20170204336
2017-07-20

QUENCHING VACUUM DISTILLATION COLUMN WASH ZONE LIQUID

#72
20170203229
2017-07-20

Process for recovering processing liquids from streams containing alkaline earth metal salts

#73
20170174590
2017-06-22

Methods for recovering chlorinated hydrocarbons

#74
20160362619
2016-12-15

Effective novel non-polymeric and non-fouling additive for inhibiting high-temperature naphthenic acid corrosion and method of using the same

#75
20160326444
2016-11-10

Microwave produced pyrolysis oil from beneficiated organic-carbon-containing feedstock

#76
20160251297
2016-09-01

Unit and process for purification of crude methyl methacrylate

#77
20160244387
2016-08-25

Method for the preparation of 1,4-butane diol having an APHA color index of less than 30

#78
20160221919
2016-08-04

Process to control HI concentration in residuum stream

#79
20160221918
2016-08-04

Process to control HI concentration in residuum stream

#80
20160221917
2016-08-04

Process to control HI concentration in residuum stream

#81
20160214029
2016-07-28

Mineral composition for generating small water clusters, a small water cluster generating device and a seawater desalination equipment using the same, and a small water cluster generating method

#82
20160151721
2016-06-02

Systems, methods, and apparatuses for purifying liquids

#83
20160091224
2016-03-31

Complexed nanoparticle material, composition and use comprising the same for heating liquid

#84
20160060204
2016-03-03

Recovery of 3-hydroxypropionic acid

#85
20160052845
2016-02-25

Process of producing 1,4-butanediol

#86
20160031792
2016-02-04

Recovery of 3-hydroxypropionic acid

#87
20150376094
2015-12-31

Methods for recovering chlorinated hydrocarbons

#88
20150353453
2015-12-10

Selective dehydrohalogenation of tertiary halogenated hydrocarbons and removal of tertiary halogenated hydrocarbon impurities from a halogenated hydrocarbon product

#89
20150336806
2015-11-26

Systems, methods, and apparatuses for purifying liquids

#90
20150299579
2015-10-22

Microwave produced pyrolysis oil from beneficiated organic-carbon-containing feedstock

#91
20150266799
2015-09-24

Methods for recovering chlorinated hydrocarbons

#92
20150152031
2015-06-04

Methods for producing bioderived propylene glycol

#93
20150144477
2015-05-28

Flexible process for treating solvent, such as monoethylene glycol, used in natural gas extraction

#94
20150119609
2015-04-30

Carboxylic acid salt removal during hydrate inhibitor recovery

#95
20150094508
2015-04-02

Systems and methods for separating xylene isomers using selective adsorption

#96
20150031930
2015-01-29

METHOD FOR ISOLATION OF CYMENE

#97
20150027873
2015-01-29

ITERATIVE REACTIVE DISTILLATION OF DYNAMIC ESTER MIXTURES

#98
20140326593
2014-11-06

Method for manufacturing high purity sulfuric acid

#99
20140256991
2014-09-11

METHODS FOR PRODUCING BIODERIVED PROPYLENE GLYCOL

#100
20140238840
2014-08-28

System and method for recycling high-boiling-point waste photoresist stripper

#101
20140183029
2014-07-03

PROCESS FOR THE TREATMENT OF A RECYCLYING STREAM FROM A PLANT FOR THE PRODUCTION OF POLYARYLENE ETHER SULFONES

#102
20140183028
2014-07-03

PROCESS FOR THE TREATMENT OF A RECYCLING STREAM FROM A PLANT FOR THE PRODUCTION OF POLYARYLENE ETHER SULFONES

#103
20130334104
2013-12-19

DISTILLING A CHEMICAL MIXTURE USING AN ELECTROMAGNETIC RADIATION-ABSORBING COMPLEX FOR HEATING

#104
20130306463
2013-11-21

PURIFYING A FLUID USING A HEAT CARRIER COMPRISING AN ELECTROMAGNETIC RADIATION-ABSORBING COMPLEX

#105
20130206579
2013-08-15

Selective dehydrohalogenation of tertiary halogenated hydrocarbons and removal of tertiary halogenated hydrocarbon impurities from a halogenated hydrocarbon product

#106
20130206578
2013-08-15

Selective dehydrohalogenation of tertiary halogenated hydrocarbons and removal of tertiary halogenated hydrocarbon impurities from a halogenated hydrocarbon product

#107
20130184488
2013-07-18

Separation method and method for producing isocyanate

#108
20130118891
2013-05-16

Integration of FT System and Syn-gas Generation

#109
20130081936
2013-04-04

Processes for producing acrylic acids and acrylates

#110
20130062192
2013-03-14

Method to Recover Organic Tertiary Amines from Waste Sulfuric Acid Employing A Plug Flow Reactor

#111
20120045361
2012-02-23

Effective Novel Non-Polymeric and Non-Fouling Additive for Inhibiting High-Temperature Naphthenic Acid Corrosion and Method of Using the Same

#112
20110190519
2011-08-04

Ambient temperature purification of alkylene oxides

#113
20110011726
2011-01-20

DISTILLATION DEVICE

#114
20110005914
2011-01-13

Selective dehydrohalogenation of tertiary halogenated hydrocarbons and removal of tertiary halogenated hydrocarbon impurities from a halogenated hydrocarbon product

#115
20100314236
2010-12-16

Method of corrosion prevention

#116
20100242362
2010-09-30

Treating a crude and natural gas stream

#117
20090032387
2009-02-05

DESALINATION OF OCEAN WATER

#118
20080305003
2008-12-11

Method for deodorization

#119
20080283383
2008-11-20

Method for the distillative purification of slow-evaporating fluids

#120
20080210541
2008-09-04

Distillation Process

#121
20070272627
2007-11-29

Use of inert, Porous Materials in Order to Reduce the Salt Content in Aqueous Solutions, and Method and Device Therefor

#122
20070240974
2007-10-18

Method of corrosion prevention

#123
20070128103
2007-06-07

Method and Apparatus for Corrosive Gas Purification

#124
20060196761
2006-09-07

Regeneration of cupric etchants and recovery of copper sulfate

#125
20060124441
2006-06-15

Process for reducing the aldehyde concentration in a mixture comprising cyclohexanone and one or more aldehydes

#126
20060086601
2006-04-27

Method for producing drinking water

#127
20050133360
2005-06-23

Process for the purification of pharmaceutical grade HFC-134a and polymer grade HCFC-22

#128
20050113603
2005-05-26

Method of removing iron oxide deposits from the surface of titanium components

#129
18801971
2024-11-26

Separation of sulfurous materials

#130
13066683
2015-10-27

System and process for removing total organic carbons from a brine waste stream

#131
12705956
2015-08-11

Methods for cleaning distilling columns