EP3580388A4 - SYSTEM AND PROCESS FOR THE REMOVAL OF SILICA IN A DIGESTION PROCESS - Google Patents

SYSTEM AND PROCESS FOR THE REMOVAL OF SILICA IN A DIGESTION PROCESS Download PDF

Info

Publication number: EP3580388A4
Authority: EP; European Patent Office
Prior art keywords: silica; removal; digestion; digestion process
Prior art date: 2017-02-07
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP18750677.9A

Other languages

German (de)

French (fr)

Other versions

EP3580388B1 (en

EP3580388A1 (en

Inventor

Fredrik Wilgotson

Stefan ANTONSSON

Lars Eriksson

Bengt WERNERSSON ÖSTBERG

Krister Olsson

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Valmet Technologies Oy

Valmet AB

Original Assignee

Valmet Oy

Valmet AB

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2017-02-07

Filing date

2018-01-31

Publication date

2020-12-23

2018-01-31 Application filed by Valmet Oy, Valmet AB filed Critical Valmet Oy

2019-12-18 Publication of EP3580388A1 publication Critical patent/EP3580388A1/en

2020-12-23 Publication of EP3580388A4 publication Critical patent/EP3580388A4/en

2023-05-10 Application granted granted Critical

2023-05-10 Publication of EP3580388B1 publication Critical patent/EP3580388B1/en

Status Active legal-status Critical Current

2038-01-31 Anticipated expiration legal-status Critical

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw materials
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)

Landscapes

Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Mechanical Engineering (AREA)
Paper (AREA)
Silicon Compounds (AREA)

EP18750677.9A 2017-02-07 2018-01-31 System and method for silica removal in a pulping process Active EP3580388B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE1750106A SE1750106A1 (en)	2017-02-07	2017-02-07	System and method for silica removal in a pulping process
PCT/SE2018/050072 WO2018147784A1 (en)	2017-02-07	2018-01-31	System and method for silica removal in a pulping process

Publications (3)

Publication Number	Publication Date
EP3580388A1 EP3580388A1 (en)	2019-12-18
EP3580388A4 true EP3580388A4 (en)	2020-12-23
EP3580388B1 EP3580388B1 (en)	2023-05-10

Family

ID=62244602

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP18750677.9A Active EP3580388B1 (en)	2017-02-07	2018-01-31	System and method for silica removal in a pulping process

Country Status (9)

Country	Link
EP (1)	EP3580388B1 (en)
CN (1)	CN110249092A (en)
CL (1)	CL2019002201A1 (en)
ES (1)	ES2947013T3 (en)
FI (1)	FI3580388T3 (en)
PL (1)	PL3580388T3 (en)
PT (1)	PT3580388T (en)
SE (1)	SE1750106A1 (en)
WO (1)	WO2018147784A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2065188A (en) *	1979-12-10	1981-06-24	Dorr Oliver Inc	Desilication in Alkaline Pulp Processes
US4668340A (en) *	1984-03-20	1987-05-26	Kamyr, Inc.	Method of countercurrent acid hydrolysis of comminuted cellulosic fibrous material
ZA974836B (en) *	1997-06-02	1998-06-24	Bountiful Applied Res Corp	Process for treating spent, waste, alkaline digestion liquor from paper pulping operations and product.
WO2011110746A1 (en) *	2010-03-11	2011-09-15	Metso Paper, Inc.	Method for producing pulp
WO2013149913A1 (en) *	2012-04-03	2013-10-10	Ovivo Luxembourg S.a.r.l.	Process for removal of solid non-fibrous material from pulp
WO2015139141A1 (en) *	2014-03-21	2015-09-24	Iogen Energy Corporation	Method for processing a cellulosic feedstock at high consistency
EP3018251A1 (en) *	2014-11-07	2016-05-11	Valmet AB	Method for recovering hydrolysate in a prehydrolysis sulfate cooking process for producing pulp

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4199399A (en) *	1976-04-19	1980-04-22	Process Evaluation & Development Corp.	Method for preparing bagasse dissolving pulps and producing rayon having a degree of polymerization of at least 800 therefrom
US4436586A (en) *	1982-01-22	1984-03-13	Kamyr, Inc.	Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
FI103418B1 (en) *	1996-01-31	1999-06-30	Sunds Defibrator Woodhandling	Process and apparatus for the pre-treatment of fibrous materials for the manufacture of cellulose pulp
US6332950B1 (en) *	1997-06-25	2001-12-25	Kaverner Pulping Ab	Method in connection with the pretreatment of comminuted fibrous material
EP1969175B1 (en) *	2005-12-07	2012-04-11	O'Flynn, Kelly Anthony	A novel catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein
CN101255664B (en) *	2008-02-02	2010-10-20	山东太阳纸业股份有限公司	Method for pulping of non-lumber fibre
US9333468B2 (en) *	2012-09-24	2016-05-10	Abengoa Bioenergy New Technologies, Llc	Soak vessels and methods for impregnating biomass with liquid
JP6522274B2 (en) *	2013-08-06	2019-05-29	日本製紙株式会社	Method of making dissolved kraft pulp.
CN203429499U (en) *	2013-09-11	2014-02-12	江苏飞翔纸业有限公司	Anti-blocking pulping waste water recycling system

2017
- 2017-02-07 SE SE1750106A patent/SE1750106A1/en unknown
2018
- 2018-01-31 CN CN201880009957.9A patent/CN110249092A/en active Pending
- 2018-01-31 ES ES18750677T patent/ES2947013T3/en active Active
- 2018-01-31 PT PT187506779T patent/PT3580388T/en unknown
- 2018-01-31 FI FIEP18750677.9T patent/FI3580388T3/en active
- 2018-01-31 WO PCT/SE2018/050072 patent/WO2018147784A1/en not_active Ceased
- 2018-01-31 PL PL18750677.9T patent/PL3580388T3/en unknown
- 2018-01-31 EP EP18750677.9A patent/EP3580388B1/en active Active
2019
- 2019-08-05 CL CL2019002201A patent/CL2019002201A1/en unknown

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2065188A (en) *	1979-12-10	1981-06-24	Dorr Oliver Inc	Desilication in Alkaline Pulp Processes
US4668340A (en) *	1984-03-20	1987-05-26	Kamyr, Inc.	Method of countercurrent acid hydrolysis of comminuted cellulosic fibrous material
ZA974836B (en) *	1997-06-02	1998-06-24	Bountiful Applied Res Corp	Process for treating spent, waste, alkaline digestion liquor from paper pulping operations and product.
WO2011110746A1 (en) *	2010-03-11	2011-09-15	Metso Paper, Inc.	Method for producing pulp
WO2013149913A1 (en) *	2012-04-03	2013-10-10	Ovivo Luxembourg S.a.r.l.	Process for removal of solid non-fibrous material from pulp
WO2015139141A1 (en) *	2014-03-21	2015-09-24	Iogen Energy Corporation	Method for processing a cellulosic feedstock at high consistency
EP3018251A1 (en) *	2014-11-07	2016-05-11	Valmet AB	Method for recovering hydrolysate in a prehydrolysis sulfate cooking process for producing pulp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE EPODOC [online] EUROPEAN PATENT OFFICE, THE HAGUE, NL; 24 June 1998 (1998-06-24), "Process for treating spent, waste, alkaline digestion liquor frompaper pulping operations and product.", XP002801002, Database accession no. ZA-974836-A *

Also Published As

Publication number	Publication date
WO2018147784A1 (en)	2018-08-16
SE540305C2 (en)	2018-06-05
CL2019002201A1 (en)	2019-11-08
ES2947013T3 (en)	2023-07-31
FI3580388T3 (en)	2023-07-10
BR112019014396A2 (en)	2020-02-11
EP3580388B1 (en)	2023-05-10
SE1750106A1 (en)	2018-06-05
EP3580388A1 (en)	2019-12-18
CN110249092A (en)	2019-09-17
PT3580388T (en)	2023-06-05
PL3580388T3 (en)	2023-09-11

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