ATE153399T1 - Verfahren zum herstellen von natriumhydroxyd aus weisslauge - Google Patents

Verfahren zum herstellen von natriumhydroxyd aus weisslauge

Info

Publication number: ATE153399T1
Authority: AT; Austria
Prior art keywords: sodium hydroxide; white liquor; sodium; liquor; polysulfide
Prior art date: 1993-10-20

Application number

AT94850183T

Other languages

English (en)

Inventor

Hannu Kurittu

Original Assignee

Enso Gutzeit Oy

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.)

1993-10-20

Filing date

1994-10-20

Publication date

1997-06-15

1994-10-20 Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy

1997-06-15 Application granted granted Critical

1997-06-15 Publication of ATE153399T1 publication Critical patent/ATE153399T1/de

Links

HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title abstract 15
238000004519 manufacturing process Methods 0.000 title 1
238000000034 method Methods 0.000 abstract 4
230000001590 oxidative effect Effects 0.000 abstract 2
229920001021 polysulfide Polymers 0.000 abstract 2
239000005077 polysulfide Substances 0.000 abstract 2
150000008117 polysulfides Polymers 0.000 abstract 2
HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 abstract 2
229910052979 sodium sulfide Inorganic materials 0.000 abstract 2
GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 2
239000003054 catalyst Substances 0.000 abstract 1
238000000502 dialysis Methods 0.000 abstract 1
238000009792 diffusion process Methods 0.000 abstract 1
239000007800 oxidant agent Substances 0.000 abstract 1
AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract 1
235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
239000000126 substance Substances 0.000 abstract 1

Classifications

- 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
- D21C11/0042—Fractionating or concentration of spent liquors by special methods
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/34—Polysulfides of sodium or potassium
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/28—Purification; Separation
- C01D1/38—Purification; Separation by dialysis
- 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
- D21C11/0057—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

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Urology & Nephrology (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Paper (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Detergent Compositions (AREA)

AT94850183T 1993-10-20 1994-10-20 Verfahren zum herstellen von natriumhydroxyd aus weisslauge ATE153399T1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FI934633A FI98538C (fi)	1993-10-20	1993-10-20	Menetelmä natriumhydroksidin valmistamiseksi valkolipeästä

Publications (1)

Publication Number	Publication Date
ATE153399T1 true ATE153399T1 (de)	1997-06-15

Family

ID=8538809

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT94850183T ATE153399T1 (de)	1993-10-20	1994-10-20	Verfahren zum herstellen von natriumhydroxyd aus weisslauge

Country Status (7)

Country	Link
US (1)	US5843316A (de)
EP (1)	EP0649939B1 (de)
AT (1)	ATE153399T1 (de)
CA (1)	CA2118463C (de)
DE (1)	DE69403302T2 (de)
ES (1)	ES2102799T3 (de)
FI (1)	FI98538C (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE507033C2 (sv) *	1995-07-04	1998-03-16	Kvaerner Pulping Tech	Framställning av polysulfid genom oxidation av sulfid i grönlut
SE504737C2 (sv) *	1995-07-04	1997-04-14	Kvaerner Pulping Tech	Framställning av polysulfid genom oxidation av sulfid med grönlutsslam som katalysator
US5942084A (en) *	1997-01-24	1999-08-24	Pulp And Paper Research Institute Of Canada	Process for the separation of sulphides from pulping liquors using amphoteric resins
CN1298637C (zh) *	2005-08-08	2007-02-07	南京工业大学	含色素废碱液中回收氢氧化钠的方法
EP2842618A1 (de) *	2013-09-02	2015-03-04	VITO NV (Vlaamse Instelling voor Technologisch Onderzoek NV)	Vorrichtung und Verfahren zur Produktwiedergewinnung und elektrische Energieerzeugung
SE538784C2 (sv) *	2015-04-09	2016-11-22	Valmet Oy	Method for polysulfide production in a kraft pulp mill
FI128221B (fi)	2015-04-27	2019-12-31	Metsae Fibre Oy	Menetelmä polysulfidilipeän valmistamiseen käytetyn katalyytin regeneroimiseksi
BR112019018861A2 (pt)	2017-03-08	2023-10-10	Hope Medical Entpr Inc Dba Hope Pharmaceuticals	Uso de nitrito de sódio, método para manter os níveis fisiológicos de nitrito, prevenir enfarte do miocárdio, prevenir morte súbita cardíaca, prevenir acidente vascular cerebral, doenças cardiovasculares, pressão alta, solução aquosa
IL268883B (en)	2017-03-08	2022-09-01	Hope Medical Entpr Inc Dba Hope Pharmaceuticals	Intradialytic use of sodium thiosulfate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4024229A (en) *	1970-11-06	1977-05-17	The Mead Corporation	Production of polysulfide with PTFE coated catalyst
JPS60112009A (ja) *	1983-11-22	1985-06-18	Asahi Optical Co Ltd	ズ−ムレンズのズ−ム駆動装置
JPS60122009A (ja) *	1983-12-06	1985-06-29	Asahi Chem Ind Co Ltd	アルカリの透析方法
CA1335976C (en) *	1989-05-31	1995-06-20	Mahmoud Kamran Azarniouch	Recovery of naoh and other values from spent liquors and bleach plant effluents
US5326433A (en) *	1991-02-06	1994-07-05	Ahlstrom Recovery Inc.	Multi-level sulfide content white liquor production and utilization in cellulose pulping
US5382322A (en) *	1991-10-18	1995-01-17	Air Products And Chemicals, Inc.	Selective white liquor oxidation
FI98537C (fi) *	1993-10-20	1997-07-10	Enso Gutzeit Oy	Menetelmä valkolipeässä olevan natriumhydroksidin erottamiseksi

1993
- 1993-10-20 FI FI934633A patent/FI98538C/fi not_active IP Right Cessation
1994
- 1994-10-19 CA CA002118463A patent/CA2118463C/en not_active Expired - Fee Related
- 1994-10-20 ES ES94850183T patent/ES2102799T3/es not_active Expired - Lifetime
- 1994-10-20 AT AT94850183T patent/ATE153399T1/de not_active IP Right Cessation
- 1994-10-20 EP EP94850183A patent/EP0649939B1/de not_active Expired - Lifetime
- 1994-10-20 DE DE69403302T patent/DE69403302T2/de not_active Expired - Fee Related
1997
- 1997-02-25 US US08/805,588 patent/US5843316A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA2118463A1 (en)	1995-04-21
US5843316A (en)	1998-12-01
DE69403302D1 (de)	1997-06-26
ES2102799T3 (es)	1997-08-01
EP0649939B1 (de)	1997-05-21
FI934633A0 (fi)	1993-10-20
EP0649939A1 (de)	1995-04-26
CA2118463C (en)	2005-10-18
FI98538B (fi)	1997-03-27
FI934633A7 (fi)	1995-04-21
DE69403302T2 (de)	1997-12-18
FI98538C (fi)	1997-07-10

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Legal Events

Date	Code	Title	Description
1998-04-15	UEP	Publication of translation of european patent specification
2008-07-15	REN	Ceased due to non-payment of the annual fee