ClassID:

126446

D21C11/10 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters Concentrating spent liquor by evaporation

Sub-classes:
Recent Application in this class:
#1
20250341054
2025-11-06

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#2
20250215642
2025-07-03

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#3
20250146217
2025-05-08

EFFICIENT METHODS AND COMPOSITIONS FOR RECOVERY OF PRODUCTS FROM ORGANIC ACID PRETREATMENT OF PLANT MATERIALS

#4
20250075427
2025-03-06

CATALYST FREE ORGANOSOLV PROCESS, SYSTEM, AND METHOD FOR FRACTIONATION OF LIGNOCELLULOSIC MATERIALS AND BIOPRODUCTS RECOVERY

#5
20240417927
2024-12-19

RECOVERY BOILER STARTUP BURNER ASSEMBLY

#6
20240401800
2024-12-05

Method and Apparatus for Improved Operation of Chemical Recovery Boilers

#7
20240150960
2024-05-09

BLACK LIQUOR TREATMENT

#8
20230323597
2023-10-12

Method for separating biomass components by ternary system

#9
20230272581
2023-08-31

METHODS OF TREATING A KRAFT PROCESS RECOVERY CYCLE TO REDUCE METAL LEVELS AT THE KRAFT PROCESS

#10
20230241552
2023-08-03

A METHOD AND ARRANGEMENT FOR MANAGING AND CONTROLLING NITROGEN EMISSION FROM A CYCLIC LIQUOR FLOW SYSTEM IN A PULP MILL

#11
20230175689
2023-06-08

Method and apparatus for improved operation of chemical recovery boilers

#12
20220340730
2022-10-27

METHOD FOR RECYCLING WASTE ARAMID-MICA COMPOSITE PAPER

#13
20220290370
2022-09-15

Process for manufacturing an upgraded bio-oil from black liquor

#14
20220275578
2022-09-01

Method and a system for adjusting PH of green liquor dregs

#15
20220220671
2022-07-14

Determining the reduction rate of a recovery boiler

#16
20220205177
2022-06-30

Method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof

#17
20220205176
2022-06-30

Method for preparing unbleached biomechanical pulp by hot steam in coordination with biological enzyme treatment of wheat straw and full utilization of by-products thereof

#18
20220204377
2022-06-30

METHOD FOR RECOVERING WATER AND CHEMICALS FROM PLANTS FOR TREATING EFFLUENTS FROM PULP AND PAPER FACTORIES

#19
20220120036
2022-04-21

Combustion of streams derived from hot water extraction of wood material

#20
20220049420
2022-02-17

Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials

#21
20210317611
2021-10-14

RECOVERY BOILER STARTUP BURNER ASSEMBLY

#22
20210292968
2021-09-23

CATALYST FREE ORGANOSOLV PROCESS, SYSTEM AND METHOD FOR FRACTIONATION OF LIGNOCELLULOSIC MATERIALS AND BIOPRODUCTS RECOVERY

#23
20200369932
2020-11-26

Deicer composition and method of making

#24
20200056331
2020-02-20

Heat transfer tube and method for manufacturing a heat transfer tube

#25
20200024802
2020-01-23

Heat transfer tube and method for manufacturing a heat transfer tube

#26
20200003410
2020-01-02

BOILER SYSTEM CONTROLLING FUEL TO A FURNACE BASED ON TEMPERATURE OF A STRUCTURE IN A SUPERHEATER SECTION

#27
20190366228
2019-12-05

Heat transfer tube and method for manufacturing a heat transfer tube

#28
20190309474
2019-10-10

Combustion of streams derived from hot water extraction of wood material

#29
20190249364
2019-08-15

METHOD AND SYSTEM FOR TREATING SPENT PULPING LIQUOR

#30
20190203416
2019-07-04

Process for isolation of hemicelluloses from biomass pulping process waters or spent liquors

#31
20180080173
2018-03-22

Method and a system for quality optimization of green liquor

#32
20170131240
2017-05-11

Acoustic emission system and method for predicting explosions in dissolving tank

#33
20170114995
2017-04-27

BOILER SYSTEM CONTROLLING FUEL TO A FURNACE BASED ON TEMPERATURE OF A STRUCTURE IN A SUPERHEATER SECTION

#34
20170030018
2017-02-02

System and process for pulping wood

#35
20170030017
2017-02-02

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

#36
20160002853
2016-01-07

Method for recovering chemicals and by-products from high-sulphidity pulping liquors

#37
20150345076
2015-12-03

Continuous method for the precipitation of lignin from black liquor

#38
20150315745
2015-11-05

Flared inlet insert for introducing flow into a flash tank

#39
20150253003
2015-09-10

Boiler system controlling fuel to a furnace based on temperature of a structure in a superheater section

#40
20150225896
2015-08-13

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

#41
20150191873
2015-07-09

Processes for producing high-yield pulp and paper products

#42
20150184212
2015-07-02

Advanced Methods for Sugar Production from Lignocellulosic Biomass and Fermenting Sugars to Microbial Lipids

#43
20140352900
2014-12-04

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

#44
20140060520
2014-03-06

System and method for conditioning a hardwood pulp liquid hydrolysate

#45
20120325421
2012-12-27

Circular utilization method in pulping and papermaking processes with straw

#46
20120017891
2012-01-26

System and method for conditioning a hardwood pulp liquid hydrolysate

#47
20110226997
2011-09-22

Method And System Of Gasification

#48
20100316553
2010-12-16

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

#49
20100041879
2010-02-18

Method for recovering a low sodium content lignin fuel from black liquor

#50
20090025892
2009-01-29

Method to recover chemicals in mechanical pulping

#51
20080308019
2008-12-18

Recovery boiler plant and a method in a recovery boiler

#52
20060070710
2006-04-06

Method and a device for preparing cellulose pulp

#53
20050115691
2005-06-02

Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor

#54
13828634
2014-04-29

System and process for recovering heat from weak black liquor in a wood pulping process