ClassID:

30499

B01D2257/408 - CPC Classification

Classification description:

Components to be removed; Nitrogen compounds Cyanides, e.g. hydrogen cyanide (HCH)

Recent Application in this class:
#1
20250229224
2025-07-17

PROCESS FOR REDUCING FOSSIL CO2 EMISSIONS

#2
20250058274
2025-02-20

PROCESS AND SYSTEM FOR REMOVING IMPURITIES FROM A GAS STREAM

#3
20240181389
2024-06-06

Hydrolysis reaction device for dechlorination and decyanation of blast furnace gas

#4
20240075427
2024-03-07

Catalytic system and method for the removal of HCN from off-gases of a fluid cracking unit using same, and FCC unit assembly including the catalytic system

#5
20230373874
2023-11-23

PLANT AND PROCESS OF GRANULATING UREA AMMONIA SULPHATE

#6
20230364579
2023-11-16

ATOMIC LAYER DEPOSITION FOR MANUFACTURING WHETLERITE CARBONS

#7
20220274046
2022-09-01

INTEGRATION OF PLASMA AND HYDROGEN PROCESS WITH COMBINED CYCLE POWER PLANT, SIMPLE CYCLE POWER PLANT AND STEAM METHANE REFORMERS

#8
20220177793
2022-06-09

Process and plant for removing thiols from synthesis gas

#9
20210363443
2021-11-25

Gas scrubbing process for purifying raw synthesis gas by physical absorption in methanol

#10
20210291114
2021-09-23

Manual water pump with power multiplier system

#11
20210260521
2021-08-26

Process and plant for purifying crude synthesis gas

#12
20210079494
2021-03-18

Method for reducing nitrogen oxides in strip treatment furnaces

#13
20200299144
2020-09-24

Process for the preparation of sodium cyanide

#14
20200298179
2020-09-24

Component removal from a gas

#15
20200197922
2020-06-25

Method of preparing catalyst for low-temperature synergistic catalytic purification of NOand HCN in flue gas, and use thereof

#16
20190224615
2019-07-25

APPARATUS AND PROCESS FOR PURIFYING SYNGAS

#17
20190126193
2019-05-02

Premix for producing an absorption agent for removing acid gases from a fluid flow

#18
20190112538
2019-04-18

COMPOSITION AND USE THEREOF FOR THE REMOVAL OF ACID GASES FROM HYDROCARBON FLUID STREAMS

#19
20190111380
2019-04-18

Process for selective removal of acid gases from fluid streams using a hybrid solvent mixture

#20
20190111378
2019-04-18

Method and apparatus for separating gas by pressure swing adsorption

#21
20190027771
2019-01-24

ACID GAS REGENERABLE BATTERY

#22
20190009268
2019-01-10

Process for stripping carbamate from ion exchange resin

#23
20190003767
2019-01-03

Hail tower for gas-vapor separations

#24
20180339242
2018-11-29

Heat treatment furnace device and method for producing carbon fiber bundle

#25
20180327263
2018-11-15

Process and apparatus for treating a sour synthesis gas

#26
20180306495
2018-10-25

Method for separating components using solids producing multi-stage direct and indirect-contact exchange

#27
20180283780
2018-10-04

Method for removal of a foulant from a carrier gas in a single vessel using recycled cold solids

#28
20180220700
2018-08-09

Activated carbon beads for smoking articles

#29
20180186661
2018-07-05

Proppants for removal of contaminants from fluid streams and methods of using same

#30
20180155204
2018-06-07

PROCESS FOR THE PREPARATION OF SODIUM CYANIDE

#31
20180142175
2018-05-24

FOAM CONTROL OF GAS SWEETENING PROCESSES

#32
20180111084
2018-04-26

Integrated purification method and system for the industrial exhaust gas containing cyanides, hydrocarbons and NO

#33
20170361264
2017-12-21

Process and plant for the purification of raw synthesis gas

#34
20170333872
2017-11-23

PROCESS TO PREPARE ADSORBENTS FROM ORGANIC FERTILIZER AND THEIR APPLICATIONS FOR REMOVAL OF ACIDIC GASES FROM WET AIR STREAMS

#35
20170312685
2017-11-02

Processes for filtering chemicals from air streams

#36
20170266638
2017-09-21

Porous mixed metal oxy-hydroxides and method of preparation

#37
20170225116
2017-08-10

Method and apparatus for removing high concentration acid gas from natural gas

#38
20160340596
2016-11-24

Sequential removal of NGLs from a natural gas stream

#39
20160304345
2016-10-20

Process and apparatus for cleaning raw product gas

#40
20160236146
2016-08-18

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production

#41
20160193560
2016-07-07

Optimization of stripper feed configuration for rich/lean solvent regeneration

#42
20160175827
2016-06-23

Metal organic frameworks for the catalytic detoxification of chemical warfare nerve agents

#43
20150352481
2015-12-10

APPARATUS AND METHOD FOR HYDROGEN RECOVERY IN AN ANDRUSSOW PROCESS

#44
20150328583
2015-11-19

Method and apparatus for removing high concentration acid gas from natural gas

#45
20150283493
2015-10-08

Layered or mixed sorbent bed protective filtration device

#46
20150232350
2015-08-20

Proppants for removal of contaminants from fluid streams and methods of using same

#47
20150028260
2015-01-29

Processes for the conversion of biomass to oxygenated organic compound, apparatus therefor and compositions produced thereby

#48
20140369915
2014-12-18

Catalyst for hydrolysis of carbonyl sulfide and hydrogen cyanide and use of titanium dioxide-based composition

#49
20140369909
2014-12-18

Dry chemical scrubber with pH adjustment

#50
20140241969
2014-08-28

Process of removing HCN from flue gas

#51
20140200373
2014-07-17

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

#52
20140147360
2014-05-29

Method and apparatus for reactive gas remediation

#53
20140131621
2014-05-15

Method for purification and conditioning of crude syngas based on properties of molten salts

#54
20140093440
2014-04-03

Corrosion control in acid gas removal equipment by the situ generation of polysulfide ions

#55
20140042362
2014-02-13

In situ generation of polysulfide ions using elemental sulfur for improved corrosion control, cyanide management, mercury management, arsine management and performance and reliability of acid gas removal equipment

#56
20130295509
2013-11-07

Method for thermally after-burning waste gases from acrolein and hydrocyanic acid production

#57
20130230440
2013-09-05

Removing acid gases from water vapour-containing fluid streams

#58
20130224094
2013-08-29

Ammonia destruction methods for use in a Claus tail gas treating unit

#59
20130137151
2013-05-30

Processes for the conversion of biomass to oxygenated organic compound, apparatus therefor and compositions produced thereby

#60
20130123099
2013-05-16

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and a rotary drying process for their production

#61
20130102456
2013-04-25

Catalytic adsorbents obtained from municipal sludges, industrial sludges, compost and tobacco waste and process for their production

#62
20130059152
2013-03-07

Process to prepare adsorbents from organic fertilizer and their applications for removal of acidic gases from wet air streams

#63
20130056677
2013-03-07

Claus hydrocarbon destruction via staged solvent regeneration

#64
20130036908
2013-02-14

Method and apparatus for control and elimination of undesirable substances

#65
20120322696
2012-12-20

Proppants for removal of contaminants from fluid streams and methods of using same

#66
20120251418
2012-10-04

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

#67
20120096770
2012-04-26

PROCESS FOR PRODUCING A PURIFIED SYNTHESIS GAS STREAM

#68
20120095119
2012-04-19

PROCESS FOR PRODUCING PURIFIED SYNTHESIS GAS

#69
20120094337
2012-04-19

PROCESS FOR PRODUCING A PURIFIED SYNTHESIS GAS STREAM

#70
20120058921
2012-03-08

Process for producing a purified synthesis gas stream

#71
20120046370
2012-02-23

Process for producing a purified synthesis gas stream

#72
20120020861
2012-01-26

USE OF A TiO2- BASED COMPOSITION FOR CAPTURING HALOGENATED COMPOUNDS CONTAINED IN A GASEOUS MIXTURE

#73
20120010306
2012-01-12

Process for removing sulphur-containing, nitrogen-containing and halogen-containing impurities contained in a synthesis gas

#74
20110293509
2011-12-01

Water gas shift process

#75
20110250113
2011-10-13

Method of treating a syngas stream and an apparatus therefor

#76
20110223091
2011-09-15

Spinning fluids reactor

#77
20110185902
2011-08-04

COLUMN FOR BRINGING TWO FLUIDS INTO CONTACT

#78
20110097701
2011-04-28

HCN removal from syngas using chemical and biological treatment

#79
20110095234
2011-04-28

Method of treating a hot syngas stream for conversion to chemical products by removing ammonia and COS

#80
20110092710
2011-04-21

Methods and devices for the production of cyanopyridines

#81
20110088554
2011-04-21

Process for removing acid gases from a gas stream

#82
20110071022
2011-03-24

PROCESS TO PREPARE ADSORBENTS FROM ORGANIC FERTILIZER AND THEIR APPLICATIONS FOR REMOVAL OF ACIDIC GASES FROM WET AIR STREAMS

#83
20100319540
2010-12-23

Removal of acid gases by means of an absorbent comprising a stripping aid

#84
20100275922
2010-11-04

Sorption agent comprising an activated carbon impregnated with a zinc compound and a molybdenum compound and gas-filtering element containing the sorption agent

#85
20100263529
2010-10-21

Method for the purification of a gas containing CO

#86
20100236407
2010-09-23

Process for producing purified gas from gas comprising HS, COand HCN and/or COS

#87
20100202947
2010-08-12

USE OF A TiO2- BASED COMPOSITION FOR CAPTURING HALOGENATED COMPOUNDS CONTAINED IN A GASEOUS MIXTURE

#88
20100197984
2010-08-05

Process for removing carbonyl sulphide and hydrogen sulphide from a synthesis gas stream

#89
20100186590
2010-07-29

Absorption medium for removing acid gases which comprises amino acid and acid promoter

#90
20100152038
2010-06-17

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND PROCESS FOR THEIR PRODUCTION

#91
20100143225
2010-06-10

Integrated warm gas desulfurization and gas shift for cleanup of gaseous streams

#92
20100139489
2010-06-10

Process and apparatus for separating metal carbonyls from synthesis gas

#93
20100101413
2010-04-29

METHOD AND APPARATUS FOR CONTROL AND ELIMINATION OF UNDESIRABLE SUBSTANCES

#94
20100065782
2010-03-18

Process for producing a purified synthesis gas stream

#95
20100061905
2010-03-11

Removal of hydrogen cyanide from synthesis gas

#96
20100050812
2010-03-04

Process for production of elemental iron

#97
20100047142
2010-02-25

FILTER MEDIA INCLUDING FILTERING AGENT EFFECTIVE FOR REMOVAL OF CYANO-CONTAINING CONTAMINANTS HAVING IMPROVED COMPATIBILITY WITH AMINE SENSITIVE IMPREGNANTS AND AMINE SENSITIVE SUBSTRATES

#98
20100037774
2010-02-18

Process and system for the abatement of impurities from a gas stream

#99
20090232718
2009-09-17

Multi-stage catalytic air purification system

#100
20090191113
2009-07-30

METHOD FOR REMOVING AMMONIA FROM A METHANOL CONTAINING STREAM

#101
20090074643
2009-03-19

Process for the removal of hydrogen cyanide and formic acid from synthesis gas

#102
20080300131
2008-12-04

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND A ROTARY DRYING PROCESS FOR THEIR PRODUCTION

#103
20080264254
2008-10-30

Novel sorbents and purification and bulk separation of gas streams

#104
20080260575
2008-10-23

TWO-STAGE CATOX APPARATUS AND PROCESS

#105
20080247927
2008-10-09

Ammonia destruction methods for use in a claus tail gas treating unit

#106
20070266853
2007-11-22

Process and device for regenerating the loaded scrubbing agent in a physical gas wash

#107
20070264180
2007-11-15

Method of deacidizing a gas by partly neutralized multiamines

#108
20070212270
2007-09-13

Apparatus for removing vaporized unreacted isocyanate from a gaseous waste stream

#109
20070191213
2007-08-16

Metal-containing compositions and their use as catalyst composition

#110
20070123417
2007-05-31

FCC additive for partial and full burn NOx control

#111
20070113736
2007-05-24

CATALYTIC ADSORBENTS OBTAINED FROM MUNICIPAL SLUDGES, INDUSTRIAL SLUDGES, COMPOST AND TOBACCO WASTE AND PROCESS FOR THEIR PRODUCTION

#112
20070020163
2007-01-25

Method for removing acid gases and ammonia from a fluid stream

#113
20070003477
2007-01-04

Purification of a mixture of h2/co by catalysis of the impurities

#114
20060014639
2006-01-19

Process to prepare adsorbents from organic fertiilizer and their applications for removal of acidic gases from wet air streams

#115
20050183577
2005-08-25

Broad spectrum filter system including tungsten-based impregnant and being useful for filtering contaminants from air or other gases

#116
20050084435
2005-04-21

Catalyst and process for decomposing carbonyl sulfide and hydrogen cyanide

#117
17137028
2022-02-15

Core-shell structured catalyst, preparation method thereof and method for treating industrial tail gas