ClassID:

28460

B01D3/36 - 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 Azeotropic distillation

Recent Application in this class:
#1
20260152465
2026-06-04

METHOD OF PURIFYING ETHYLENEDIAMINE

#2
20260055352
2026-02-26

DIRECT RECTIFICATION OF MOLECULAR SIEVE REGENERANT AND METHOD OF USING THE SAME

#3
20250376704
2025-12-11

BUTANOL PRODUCTION METHOD

#4
20250340504
2025-11-06

METHOD FOR PREPARING ACRYLIC ACID

#5
20250320173
2025-10-16

METHODS FOR PURIFYING A SOLVENT

#6
20250313540
2025-10-09

PROCESS FOR THE PREPARATION OF [1,4,5]-OXADIAZEPINE DERIVATIVES

#7
20250222405
2025-07-10

MEMBRANE SEPARATION AND PURIFICATION APPARATUS, AND METHOD THEREOF

#8
20250154103
2025-05-15

A process for the preparation of Triclopyr-Butotyl

#9
20250114749
2025-04-10

SYSTEMS AND METHODS FOR CONCENTRATING FLUID COMPONENTS VIA DISTILLATION AND MEMBRANE FILTRATION

#10
20250109364
2025-04-03

DIRECT RECTIFICATION OF MOLECULAR SIEVE REGENERANT AND METHOD OF USING THE SAME

#11
20250075054
2025-03-06

INTEGRATED CHEMICAL RECYCLING FACILITY WITH POLYETHYLENE TEREPHTHALATE PRODUCTION

#12
20250066281
2025-02-27

ALDEHYDE REMOVAL PROCESS FOR METHANOL CARBONYLATION

#13
20250032951
2025-01-30

Reactive Distillation System and Method for Production of Hydrogen from Hydriodic Acid

#14
20250026707
2025-01-23

METHOD FOR CONVERTING ONE OR MORE HYDROCARBONS, AND A CATALYST USED THEREFOR

#15
20250011699
2025-01-09

DUAL-PROCESS SOLVENT AND SUGAR PRODUCTION PLANTS

#16
20240417354
2024-12-19

METHOD OF PREPARING ISOPROPYL ALCOHOL

#17
20240383752
2024-11-21

REACTIVE DISTILLATION PROCESS FOR PREPARING FLUOROSULFONYLIMIDE SALTS

#18
20240343703
2024-10-17

PLANT AND EFFICIENT PROCESS FOR PRODUCING LACTIDE FROM LACTIC ACID

#19
20240300884
2024-09-12

METHODS FOR REMOVAL OF SULFUR DIOXIDE (SO2) FROM TRIFLUOROACETYL CHLORIDE (TFAC)

#20
20240246891
2024-07-25

METHOD FOR PRODUCING TRIFLUOROETHYLENE AND RECYCLING THE CHLOROTRIFLUOROETHYLENE STREAM

#21
20240208831
2024-06-27

METHOD OF PREPARING ANHYDROUS LITHIUM IODIDE

#22
20240182391
2024-06-06

Recovering Mono-ethylene Glycol

#23
20240174587
2024-05-30

METHOD FOR EXTRACTING ALCOHOLS FROM AN INITIAL MIXTURE COMPRISING ALCOHOLS IN AQUEOUS PHASE

#24
20240165447
2024-05-23

AZEOTROPE OR AZEOTROPE-LIKE COMPOSITIONS OF TRIFLUOROIODOMETHANE (CF3I) AND WATER

#25
20240123423
2024-04-18

Silicon-based solid amine sorbent for COand making method thereof

#26
20240050792
2024-02-15

Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane

#27
20240042343
2024-02-08

PRODUCTION SYSTEM, PRODUCTION METHOD AND APPLICATION OF GENERAL-PURPOSE HIGH-PURITY CHEMICALS

#28
20240025828
2024-01-25

PROCESS FOR PRODUCING ALCOHOLS

#29
20230415066
2023-12-28

PROCESS FOR SEPARATING MOLECULES FROM A MIXTURE OF FLUIDS COMPRISING AT LEAST ONE FLUORINATED COMPONENT

#30
20230357806
2023-11-09

FERMENTATION PROCESS TO PRODUCE BIOACROLEIN AND BIOACRYLIC ACID

#31
20230357100
2023-11-09

METHOD FOR PRODUCING RADIOACTIVE LABELED SUBSTANCE, DEVICE FOR PRODUCING RADIOACTIVE LABELED SUBSTANCE, AND METHOD FOR EVAPORATIVELY CONCENTRATING RADIOACTIVE METAL NUCLIDE

#32
20230348344
2023-11-02

SEPARATION OF CARBON DIOXIDE AND SULFUROUS MATERIALS FROM GASEOUS MIXTURES

#33
20230322652
2023-10-12

ETHANOL PRODUCTION VIA DISTILLATION AND DEHYDRATION

#34
20230249098
2023-08-10

Device for carrying out material exchange processes

#35
20230150904
2023-05-18

Method for refining bio-based propylene glycol

#36
20230118652
2023-04-20

METHOD FOR PREPARING ELECTRONIC GRADE INORGANIC ACIDS FROM WASTE ACID SOLUTION

#37
20230086044
2023-03-23

Anti-solvent technique for recovering an organic solvent from a polyarylene sulfide waste sludge

#38
20230073136
2023-03-09

Extraction technique for recovering an organic solvent from a polyarylene sulfide waste sludge

#39
20230010850
2023-01-12

ORGANIC SOLVENT PRODUCTION VIA DISTILLATION AND DEHYDRATION

#40
20220401880
2022-12-22

SYSTEMS AND METHODS FOR CONCENTRATING FLUID COMPONENTS VIA DISTILLATION AND MEMBRANE FILTRATION

#41
20220306948
2022-09-29

METHOD FOR PROCESSING A GASEOUS COMPOSITION

#42
20220298088
2022-09-22

Process of preparing alcohols

#43
20220280908
2022-09-08

Selective adsorption of halocarbon impurities containing cl, br and i in fluorocarbons or hydrofluorocarbons using adsorbent supported metal oxide

#44
20220219979
2022-07-14

METHODS FOR PRODUCING ANHYDROUS HYDROGEN IODIDE (HI)

#45
20220216520
2022-07-07

METHOD FOR DRYING AND PURIFYING LITHIUM BIS(FLUOROSULFONYL)IMIDE SALT

#46
20220213013
2022-07-07

System of concentrating and separating waste solvent liquid

#47
20220185760
2022-06-16

Aldehyde removal process for methanol carbonylation

#48
20220169506
2022-06-02

PROCESSES USEFUL IN THE MANUFACTURE OF CYCLODODECASULFUR

#49
20220162761
2022-05-26

PROCESSES USEFUL IN THE MANUFACTURE OF CYCLODODECASULFUR

#50
20220081386
2022-03-17

Methods for removal of sulfur dioxide (SO) from trifluoroacetyl chloride (TFAC)

#51
20220080243
2022-03-17

AZEOTROPE OR AZEOTROPE-LIKE COMPOSITIONS OF TRIFLUOROIODOMETHANE (CF3I) AND WATER

#52
20220073803
2022-03-10

Azeotrope or azeotrope-like compositions of trifluoroiodomethane (CFI) and trifluoroacetyl chloride (CFCOCI)

#53
20220023693
2022-01-27

Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane

#54
20220010184
2022-01-13

AZEOTROPIC OR AZEOTROPIC-LIKE COMPOSITION COMPRISING HYDROGEN FLUORIDE AND 1,1,2-TRICHLOROETHANE, TRANS-1,2-DICHLOROETHYLENE OR CIS-1,2-DICHLOROETHYLENE

#55
20210371363
2021-12-02

Method for refining bio-based propylene glycol

#56
20210346820
2021-11-11

Azeotrope-like composition containing 1,2-difluoroethylene or 1,1,2-trifluoroethylene and hydrogen fluoride

#57
20210261491
2021-08-26

Method for purifying light acrylates

#58
20210171556
2021-06-10

METHODS FOR IMPROVING PURITY OF TENOFOVIR DISOPROXIL FUMARATE, AND COMPOSITIONS THEREOF

#59
20210094977
2021-04-01

METHODS FOR IMPROVING PURITY OF TENOFOVIR DISOPROXIL FUMARATE, AND COMPOSITIONS THEREOF

#60
20210079321
2021-03-18

Azeotropic composition containing 1,1,1,3,3,3-hexafluoro-2-methoxypropane

#61
20210060454
2021-03-04

Systems for desalinating aqueous compositions through hetero-azeotropic distillation

#62
20210030824
2021-02-04

Modular, integrated process and apparatus for extracting, refining and remediating active substances from plant material

#63
20200407757
2020-12-31

METHOD OF PRODUCING ALCOHOL FROM MILK PERMEATE AND COMPOSITIONS THEREOF

#64
20200369933
2020-11-26

Azeotrope or azeotrope-like compositions of trifluoroiodomethane (CFI) and trifluoroacetyl chloride (CFCOCI)

#65
20200230519
2020-07-23

Methods for desalinating aqueous compositions through hetero-azeotropic distillation

#66
20200207793
2020-07-02

METHODS FOR IMPROVING PURITY OF TENOFOVIR DISOPROXIL FUMARATE, AND COMPOSITIONS THEREOF

#67
20200165210
2020-05-28

METHOD FOR PREPARING AZOXYSTROBIN

#68
20200157041
2020-05-21

Process for the separation of long chain amino acids and dibasic acids

#69
20200148656
2020-05-14

Method of treatment of aqueous effluent

#70
20200123120
2020-04-23

Method and an apparatus for separating furfural

#71
20200123097
2020-04-23

Aniline purification process

#72
20200122052
2020-04-23

Method for producing a terpene-enhanced cannabinoid concentrate and removal of contaminants

#73
20200114188
2020-04-16

Azeotrope or azeotrope-like compositions of trifluoroidomethane (CFI) and 1,1,1,3,3,3-hexafluoropropane (HFC-236fa)

#74
20200114187
2020-04-16

Azeotrope or azeotrope-like compositions of trifluoroiodomethane (CFI) and 1,1,1,2,2,3,3,-heptafluoropropane (HFC-227ca)

#75
20200079716
2020-03-12

Method for purifying phenol

#76
20200078735
2020-03-12

Systems and methods for concentrating fluid components via distillation and membrane filtration

#77
20200024553
2020-01-23

Azeotropic composition containing 1,1,1,3,3,3-hexafluoro-2-methoxypropane

#78
20190379088
2019-12-12

Method for drying and purifying lithium bis(fluorosulfonyl)imide salt

#79
20190352242
2019-11-21

SYSTEMS AND METHODS FOR SEPARATING (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE, HF, AND A HEAVY ORGANIC AND REACTOR PURGE

#80
20190337873
2019-11-07

METHOD FOR PRODUCING FLUORINATED ALKANE, METHOD FOR SEPARATING AND RECOVERING AMIDINE BASE, AND METHOD FOR USING RECOVERED AMIDINE BASE

#81
20190298862
2019-10-03

IOHEXOL POWDER AND METHOD OF USING THE SAME

#82
20190276422
2019-09-12

Process for the recovery of furfural

#83
20190270716
2019-09-05

Process for the recovery of furfural

#84
20190247766
2019-08-15

Thermally integrated distillation systems and processes using the same

#85
20190210944
2019-07-11

Systems and methods for reducing the formation of impurities during 244bb dehydrochlorination to 1234yf

#86
20190203162
2019-07-04

Process for recovering alcohols in a fermenter

#87
20190201807
2019-07-04

Process for the purification of the solvent deriving from the production of elastomeric blends

#88
20190194399
2019-06-27

Azeotropic or quasi-azeotropic composition comprising 1,1,1,2,2-pentafluoropropane and trans-1,3,3,3-tetrafluoropropene

#89
20190151769
2019-05-23

Process for producing acetic acid

#90
20190127244
2019-05-02

Method for producing acrylic ester with low pollutant discharge

#91
20190119111
2019-04-25

Process for preparation of hydrobromic acid

#92
20190093039
2019-03-28

Combined dehydration of gas and inhibition of liquid from a well stream

#93
20190083923
2019-03-21

Method of recovering (meth)acrylic acid

#94
20190038995
2019-02-07

Method for removing contaminants from cannabinoid distillates

#95
20190023634
2019-01-24

Method for purifying phenol

#96
20190010116
2019-01-10

Process for the separation of long chain amino acids and dibasic acids

#97
20190002397
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#98
20190002396
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#99
20180346402
2018-12-06

Process for purification of methyl methacrylate

#100
20180297919
2018-10-18

Azeotropic compositions of hydrogen fluoride and Z-3,3,3-trifluoro-1-chloropropene

#101
20180224203
2018-08-09

Separating carbon dioxide and ethane from a mixed stream

#102
20180208465
2018-07-26

Method for producing hydrogen chloride

#103
20180194703
2018-07-12

SYSTEMS AND METHODS FOR SEPARATING (E)-1-CHLORO-3,3,3-TRIFLUOROPROPENE, HF, AND A HEAVY ORGANIC AND REACTOR PURGE

#104
20180187112
2018-07-05

Combined dehydration of gas and inhibition of liquid from a well stream

#105
20180179135
2018-06-28

Process for producing diisopropyl ether from high purity propylene

#106
20180179134
2018-06-28

Process for producing diisopropyl ether from high purity propylene

#107
20180179133
2018-06-28

Process for producing diisopropyl ether from high purity propylene

#108
20180169542
2018-06-21

Distillation device

#109
20180118642
2018-05-03

Method for producing fluorinated alkane, method for separating and recovering amidine base, and method for using recovered amidine base

#110
20180093949
2018-04-05

Efficient process for the synthesis of cyclic amides

#111
20180093198
2018-04-05

Process to control HI concentration in residuum stream

#112
20180065061
2018-03-08

Thermally integrated distillation systems and processes using the same

#113
20180057434
2018-03-01

Azeotropic or azeotrope-like compositions of 3,3,3-trifluoropropyne and water

#114
20180056210
2018-03-01

SEPARATION OF (Z)-1-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFO-1233zd(Z)) AND 1-CHLORO-1,3,3,3-TETRAFLUOROPROPANE (HCFC-244fa) BY ADDING A THIRD COMPONENT

#115
20180043279
2018-02-15

Separation systems and methods of using them

#116
20180009732
2018-01-11

Process for producing acetic acid

#117
20170349530
2017-12-07

Method and apparatus for purification of dimethyl carbonate using pervaporation

#118
20170320804
2017-11-09

Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis

#119
20170297998
2017-10-19

Method for producing diesters of terephthalic acid with enrichment of recirculated alcohol

#120
20170297982
2017-10-19

Azeotropic compositions of hydrogen fluoride and Z-3,3,3-trifluoro-1-chloropropene

#121
20170291874
2017-10-12

Process for the manufacture of idalopirdine via hydrogenation of an imine

#122
20170252669
2017-09-07

Method for producing anhydrous sugar alcohol using azeotropic distillation

#123
20170247313
2017-08-31

Breaking a methanol/methyl methacrylate azeotrope using pressure swing distillation

#124
20170240490
2017-08-24

Process for the separation of ethylbenzene

#125
20170240489
2017-08-24

Separation process for C8 aromatics mixture

#126
20170204034
2017-07-20

Process and system for making cyclohexanone

#127
20170204033
2017-07-20

Process and system for making cyclohexanone

#128
20170174596
2017-06-22

Process for the separation of monoethylene glycol and 1,2-butanediol

#129
20170158594
2017-06-08

Recovery method and recovery device for (meth) acrylic acid

#130
20160251297
2016-09-01

Unit and process for purification of crude methyl methacrylate

#131
20160237024
2016-08-18

Method for separating N,N,N'-trimethylbisaminoethylether and/or N,N-dimethylbisaminoethylether from a mixture

#132
20160229780
2016-08-11

PROCESS FOR THE PURIFICATION OF ACETONE FROM THE KETONIZATION OF ACETIC ACID

#133
20160229777
2016-08-11

PURIFICATION OF AN ACETYL STREAM

#134
20160228787
2016-08-11

Method and apparatus for extracting plant oils using ethanol water

#135
20160175735
2016-06-23

Process system for separating chemicals, distillation column arrangement, and method of separating chemicals

#136
20160107975
2016-04-21

Process for the separation of formic acid from methyltetrahydrofuran

#137
20150315116
2015-11-05

PURE PLANT MOTHER LIQUOR SOLVENT EXTRACTION SYSTEM AND METHOD

#138
20150291901
2015-10-15

Combined dehydration of gas and inhibition of liquid from a well stream

#139
20150258464
2015-09-17

Method and Apparatus for Molecular Targeting and Separation of Feedstock Fluids

#140
20150252448
2015-09-10

PRODUCTION OF HIGH-GRADE SYNTHETIC RUTILE FROM LOW-GRADE TITANIUM-BEARING ORES

#141
20150251993
2015-09-10

Iohexol powder and method of using the same

#142
20150191567
2015-07-09

TETRAHYDROFURAN PURGE TREATMENT PROCESS

#143
20150166445
2015-06-18

DEHYDRATION OF DILUTIONS OF COMPOUNDS FORMING AN AZEOTROPE WITH WATER

#144
20150101922
2015-04-16

Apparatus for molecular targeting and separation of feedstock fluids

#145
20150075969
2015-03-19

Processes and systems for purifying silane

#146
20150014148
2015-01-15

Process for Energy Recovery in Manufacturing Cellulose Esters

#147
20150013377
2015-01-15

Separating carbon dioxide and ethane from a mixed stream

#148
20140343320
2014-11-20

Device and method for separating off water and recovering a carboxylic acid from reactor discharge during an aromatic compound oxidation reaction using energy donating coupled distillation

#149
20140231240
2014-08-21

Separation of R-1233 from hydrogen fluoride

#150
20140166469
2014-06-19

Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid

#151
20130253229
2013-09-26

Apparatus and process for using olefin as an azeotropic entrainer for isolating 1,3-DICHLORO-2-propanol from a 2,2′-oxybis (1-chloropropane) waste stream

#152
20130245340
2013-09-19

Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution

#153
20130197279
2013-08-01

Water and Contaminants Removal from Butanol Fermentation Solutions and/or Broths Using a Brine Solution

#154
20130174605
2013-07-11

Processes and systems for purifying silane

#155
20130118892
2013-05-16

Isolation of acrylic acid by means of a distillation column having a side offtake

#156
20130081936
2013-04-04

Processes for producing acrylic acids and acrylates

#157
20130060002
2013-03-07

Process for working up reaction outputs from the hydrogenation of EDDN or EDMN

#158
20130012738
2013-01-10

Method for recovery of acetic acid from an aqueous solution thereof

#159
20120233920
2012-09-20

Separation of light hydrocarbons and sour species from a sour gas

#160
20120138841
2012-06-07

Azeotrope-like compositions of (Z)-1-chloro-3,3,3-trifluoropropene and hydrogen fluoride

#161
20120083622
2012-04-05

METHOD AND APPARATUS FOR PREPARING AN ESTER

#162
20120073953
2012-03-29

Process for isolating tetrahydrofuran

#163
20110315541
2011-12-29

Methods for alcohol recovery and concentration of stillage by-products

#164
20110301377
2011-12-08

Production of carboxylic acid esters by stripping with alcohol vapor

#165
20110297528
2011-12-08

System and method for reduction of water consumption in purified terephthalic acid production

#166
20110236296
2011-09-29

METHOD OF PURIFYING HYDROCHLORIC ACID

#167
20110233045
2011-09-29

METHOD OF PURIFYING HYDROCHLORIC ACID

#168
20110172462
2011-07-14

Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis

#169
20110162951
2011-07-07

PARTIAL PRESSURE DISTILLATION PROCESS

#170
20110152580
2011-06-23

PROCESS AND APPARATUS FOR VAPOR PHASE PURIFICATION DURING HYDROCHLORINATION OF MULTI-HYDROXYLATED ALIPHATIC HYDROCARBON COMPOUNDS

#171
20110146140
2011-06-23

LOW WATER BIOMASS-DERIVED PYROLYSIS OIL AND PROCESSES FOR PREPARING THE SAME

#172
20110098516
2011-04-28

Multi-stage process and apparatus for recovering dichlorohydrins

#173
20110044879
2011-02-24

PROCESS FOR THE TREATMENT AND PURIFICATION OF DANGEROUS WASTES CONTAINING AMMONIUM SALTS, PARTICULARLY AMMONIUM CHLORIDE, DERIVED FROM PHARMACEUTICAL AND CHEMICAL TECHNOLOGIES

#174
20110005915
2011-01-13

METHOD FOR RECOVERING FLUOROCARBOXYLIC ACIDS

#175
20100314320
2010-12-16

Dehydration system and dehydration method

#176
20100305355
2010-12-02

Method of removing heavy hydrocarbons from reaction products in the production of sec-butyl acetate

#177
20100249457
2010-09-30

Apparatus and method for recovery of acetic acid from an aqueous solution thereof

#178
20100218552
2010-09-02

Apparatus and process for the separation and purification of ideal and non-ideal refrigerant mixtures

#179
20100187088
2010-07-29

Separation of close boiling compounds by addition of a third compound

#180
20100105965
2010-04-29

Process and apparatus for azeotropic recovery of dichlorohydrins

#181
20100029881
2010-02-04

Method for producing methacrylic alkyl esters by way of azeotropic distillation

#182
20090299090
2009-12-03

Method for production of purified (meth)acrylic acid

#183
20090101086
2009-04-23

Water purification method, process and apparatus

#184
20090071813
2009-03-19

METHOD FOR CHEMICALLY REACTING AND SEPARATING A MIXTURE IN A COLUMN

#185
20080042103
2008-02-21

Azeotrope-like compositions of difluoromethane

#186
20080038184
2008-02-14

Process and apparatus for the production of sulphur oxides

#187
20070278087
2007-12-06

Azeotrope-like compositions of 1,1,1,3,3-pentafluorobutane and hydrogen fluoride

#188
20070249877
2007-10-25

Processes utilizing extractive distillation

#189
20070155972
2007-07-05

Method for separating trioxane from a mixture containing trioxane, formaldehyde and water

#190
20070144886
2007-06-28

Process for providing ethanol

#191
20070131535
2007-06-14

Utilizing ionic liquids for hydrofluorocarbon separation

#192
20060235182
2006-10-19

Method for removal of impurities in cyclic siloxanes useful as precursors for low dielectric constant thin films

#193
20060030508
2006-02-09

Azeotrope-like compositions of difluoromethane

#194
20060030507
2006-02-09

Azeotrope-like compositions of 1,1,1,3,3-pentachloropropane and carbon tetrachloride

#195
20050207968
2005-09-22

Process for removing water from a mixture containing water and zinc chloride

#196
20050059838
2005-03-17

Process for producing (meth) acrylic acid compound

#197
16782931
2020-10-13

Modular, integrated process and apparatus for extracting, refining and remediating active substances from plant material

#198
16599933
2022-10-25

System and method for synthesis of dialkyl carbonates using carbon dioxide reaction with methanol and ammonia

#199
15644645
2018-05-15

Process for the separation of long chain amino acids and dibasic acids

#200
15643594
2019-07-16

Distillation reflux reduction

#201
15635874
2018-05-15

Process for the separation of long chain amino acids and dibasic acids