ClassID:

126434

D21C11/0057 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor

Recent Application in this class:
#1
20240318382
2024-09-26

Sulfonated Lignin-Derived Compounds And Uses Thereof

#2
20240150960
2024-05-09

BLACK LIQUOR TREATMENT

#3
20230416986
2023-12-28

METHOD FOR THE GASIFICATION OF A BLACK LIQUOR

#4
20230313456
2023-10-05

PROCESS AND APPARATUS FOR WHITE LIQUOR OXIDATION

#5
20230304221
2023-09-28

Sulfonated Lignin-Derived Compounds And Uses Thereof

#6
20230160143
2023-05-25

Sulfonated lignin-derived compounds and uses thereof

#7
20230132267
2023-04-27

High solids alkaline oxidation and biomethane conversion of residual lignin

#8
20220120035
2022-04-21

Method for producing oxidized lignin in kraft pulp mill

#9
20220106737
2022-04-07

A method of replacing sodium losses in a pulp mill, a method of producing bleached cellulosic pulp, and a system

#10
20210279390
2021-09-09

Method for obtaining information on quality of combustion of a liquor in a chemical recovery boiler and a method for controlling a chemical recovery boiler

#11
20210276945
2021-09-09

Sulfonated lignin-derived compounds and uses thereof

#12
20210189648
2021-06-24

Method and a system for removing hydrogen sulphide ions (HS) from a liquor of a pulp mill process

#13
20210095421
2021-04-01

Multi-step process for the isolation of components from

#14
20200385925
2020-12-10

Method and a system for adjusting S/Na-balance of a pulp mill

#15
20200291574
2020-09-17

Method and a system for adjusting S/Na-balance of a pulp mill

#16
20200063341
2020-02-27

Process for the isolation of lignin from black liquor and modification of the lignin for plastic applications

#17
20190085006
2019-03-21

Method for producing low molecular weight aromatic lignin-derived compounds

#18
20190040577
2019-02-07

Deposit control for a black liquor recovery boiler

#19
20180112355
2018-04-26

METHOD FOR POLYSULFIDE PRODUCTION IN A KRAFT PULP MILL

#20
20160121276
2016-05-05

DYNAMIC MIXING ASSEMBLY WITH IMPROVED BAFFLE DESIGN

#21
20160032525
2016-02-04

Process for the isolation of lignin from black liquor and modification of the lignin for plastic applications

#22
20160017541
2016-01-21

PROCESS FOR LOWERING MOLECULAR WEIGHT OF LIQUID LIGNIN

#23
20150292152
2015-10-15

Method for preparing black liquor and method for preparing flavor component-containing liquid

#24
20150225896
2015-08-13

CONDITIONING OF SO2-ETHANOL-WATER SPENT LIQUOR FOR FERMENTATION BY CLOSTRIDIA

#25
20150136346
2015-05-21

Process and a dissolving pulp manufactured by the process

#26
20150096697
2015-04-09

Method for separating lignin from black liquor

#27
20140054506
2014-02-27

Method of recovering chemicals

#28
20120094335
2012-04-19

laccase and variants and fragments thereof

#29
20110297340
2011-12-08

Method for separating lignin from black liquor

#30
20090126882
2009-05-21

Generation of active polysulphide with manganese and bismuth catalysts

#31
20060254733
2006-11-16

Method to lower the release of hazardous air pollutants from Kraft recovery process

#32
20050072539
2005-04-07

Kraft pulp yield by heat treatment of polysulphide liquors generated by oxidation