ClassID:

126426

D21C11/00 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters

Sub-classes:
Recent Application in this class:
#1
20220307198
2022-09-29

VOLATILE FATTY ACID CONTROL

#2
20210206883
2021-07-08

Method for producing cellulose carbamate

#3
20200368688
2020-11-26

Black liquor concentration by a membrane comprising graphene oxide on porous polymer

#4
20190010420
2019-01-10

Extraction of phytosterols from tall oil soap using a solvent selected from dibromomethane, bromoform, tetrabromomethane or a combination thereof

#5
20180179339
2018-06-28

Method for activating and precipitating lignin

#6
20180071684
2018-03-15

Black Liquor Concentration by a Membrane Comprising Graphene Oxide on Porous Polymer

#7
20170362106
2017-12-21

Method of treating cellulose containing waste water sludge for the manufacture of linerboard and cellulosic ethanol production

#8
20170305949
2017-10-26

Method of purifying lignin by subjecting a slurry comprising lignin to an electric field

#9
20170247255
2017-08-31

Method for obtaining stabilized lignin having a defined particle-size distribution from a lignin-containing liquid

#10
20170159238
2017-06-08

Method for utilizing lignin separated from black liquor as lime-kiln fuel

#11
20170128958
2017-05-11

Sand separator vessel perforated replaceable insert apparatus and method

#12
20170030017
2017-02-02

Device and method for treating the black liquor resulting from pulping by hydrothermal liquefaction

#13
20170009354
2017-01-12

METHOD AND COMPOSITION FOR REDUCING SILICA BASED EVAPORATOR SCALING

#14
20160362353
2016-12-15

INTEGRATED PROCESS FOR PRODUCING CELLULOSIC PULP AND POLYOLS STREAM

#15
20160355444
2016-12-08

BIOMASS PROCESSING METHODS AND SYSTEMS

#16
20160168790
2016-06-16

Process for obtaining cellulose

#17
20160146720
2016-05-26

Method for measuring soap content in black liquor and an analytical container

#18
20160130753
2016-05-12

Method for recovering hydrolysate

#19
20150322627
2015-11-12

Process for refining chemicals from pulp and paper mill wastewaters

#20
20150315746
2015-11-05

Methods of processing plant fiber, and related systems and compositions

#21
20150315745
2015-11-05

Flared inlet insert for introducing flow into a flash tank

#22
20150225895
2015-08-13

Method and apparatus for obtaining strong white liquor and lime mud with low residual alkali level

#23
20150119559
2015-04-30

Method for lignin separation from black liquor

#24
20140352900
2014-12-04

Flash tank with flared inlet insert and method for introducing flow into a flash tank

#25
20140027076
2014-01-30

Method for recovering pulping chemicals and reducing the concentration of potassium and chloride therein

#26
20130284390
2013-10-31

In-line drainer with shaped screen slots

#27
20130206346
2013-08-15

Flash tank with adjustable inlet

#28
20130152458
2013-06-20

Systems having digestion units with capability for loading cellulosic biomass under high pressure and associated methods for cellulosic biomass processing

#29
20130072724
2013-03-21

Process for refining chemicals from pulp and paper mill wastewaters

#30
20120322653
2012-12-20

AQUEOUS CATALYST SULFIDING PROCESS

#31
20120298584
2012-11-29

LIQUID RECOVERY AND PURIFICATION IN BIOMASS PRETREATMENT PROCESS

#32
20120279669
2012-11-08

Method of treating liquid flows at a chemical pulp mill

#33
20120228118
2012-09-13

METHOD AND EQUIPMENT FOR TREATMENT OF BLACK LIQUOR AT PULP MILL

#34
20120193050
2012-08-02

Method and assembly for processing cellulose pulp of wood processing industry

#35
20120168102
2012-07-05

PULPING PROCESS FOR QUALITY PROTECTION INCLUDING METHODS FOR HEMICELLULOSE EXTRACTION AND TREATMENT OF HEMICELLULOSE-EXTRACTED LIGNOCELLULOSIC MATERIALS

#36
20120168101
2012-07-05

Process for reducing one or more insoluble solids in a black liquor

#37
20120000621
2012-01-05

Shaped cellulose manufacturing process combined with a pulp mill recovery system

#38
20100316553
2010-12-16

Method for extracting ammonium salt and methanol from a liquid obtained from foul condensates in a cellulose pulp mill

#39
20100122784
2010-05-20

Process for treating pulp mill condenstates using a hollow fiber contactor

#40
20100025325
2010-02-04

System and method for the renovation of process water

#41
20090306282
2009-12-10

Process for making and using foam control compositions

#42
20090029902
2009-01-29

Peptides for binding calcium carbonates and methods of use

#43
20080308019
2008-12-18

Recovery boiler plant and a method in a recovery boiler

#44
20080289783
2008-11-27

Method of degumming cellulosic fibres

#45
20080164222
2008-07-10

Method and apparatus for thickening lime mud in a disc filter

#46
20070137805
2007-06-21

Wet pulping system and method for producing cellulosic insulation with low ash content

#47
20070039702
2007-02-22

Purification of alkaline washing liquid

#48
20060128816
2006-06-15

Defoamer emulsion compositions for pulp mill applications

#49
20050051287
2005-03-10

Chemimechanical desilication of nonwood plant materials