ClassID:

126435

D21C11/0064 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor

Sub-classes:
Recent Application in this class:
#1
20260043196
2026-02-12

METHOD FOR PROCESSING BLACK LIQUOR IN PULP PRODUCTION

#2
20210010200
2021-01-14

Vent stack temperature as a feedforward variable for smelt dissolving tank TTA control

#3
20200048832
2020-02-13

System of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler

#4
20190234018
2019-08-01

Method of recycling by-product generated in papermaking process

#5
20190177914
2019-06-13

System and a method for producing aqueous sulphuric acid

#6
20190093950
2019-03-28

Process for reducing ringing in lime kilns

#7
20180274171
2018-09-27

System and process for stripping volatile organic compounds from foul condensate

#8
20180209095
2018-07-26

Method and system of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler

#9
20180080173
2018-03-22

Method and a system for quality optimization of green liquor

#10
20170211232
2017-07-27

METHOD FOR HANDLING SPENT WASH SOLUTION OF A LIGNIN-RECOVERY PROCESS

#11
20160289793
2016-10-06

Method for leaching recovery-boiler ash

#12
20150290566
2015-10-15

Method for removing the precoat layer of a rotary filter

#13
20140374039
2014-12-25

Method for the causticizing process for producing white liquor

#14
20130129601
2013-05-23

Lime causticization product brightness improvement via pre-slaking

#15
20120073772
2012-03-29

GASIFICATION OF SULPHITE THICK LIQUOR

#16
20090025892
2009-01-29

Method to recover chemicals in mechanical pulping

#17
20080219912
2008-09-11

Particulate matter and methods of obtaining same from a kraft waste reclamation

#18
20070251891
2007-11-01

Method and device for cleaning of filter

#19
20070221345
2007-09-27

Method and device for washing of lime mud

#20
20070092422
2007-04-26

Method for processing flue gases

#21
20060127298
2006-06-15

Feeding device and process and feeding system which utilize the feeding device

#22
20060075900
2006-04-13

Method for the production of green liquor

#23
20050079117
2005-04-14

Processes for preparing calcium carbonate

#24
20050034824
2005-02-17

System and method for controlling a processor including a digester utilizing time-based assessments