PT81977A - Process and means for recovering chemicals from spent pulp liquors - Google Patents

Process and means for recovering chemicals from spent pulp liquors

Info

Publication number: PT81977A
Authority: PT; Portugal
Prior art keywords: recovering chemicals; spent pulp; pulp liquors; liquors; spent
Prior art date: 1985-03-26

Application number

PT81977A

Other languages

English (en)

Other versions

PT81977B (pt

Inventor

Sven Santen

Sven Eriksson

Ragnar Bernhard

Original Assignee

Skf Steel Eng 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.)

1985-03-26

Filing date

1986-02-05

Publication date

1986-03-01

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20359633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PT81977(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1986-02-05 Application filed by Skf Steel Eng Ab filed Critical Skf Steel Eng Ab

1986-03-01 Publication of PT81977A publication Critical patent/PT81977A/pt

1993-01-29 Publication of PT81977B publication Critical patent/PT81977B/pt

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
- D21C11/12—Combustion of pulp liquors
- D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
- 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
- D21C11/10—Concentrating spent liquor by evaporation
- D21C11/103—Evaporation by direct contact with gases, e.g. hot flue gases
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/03—Papermaking liquor

PT81977A 1985-03-26 1986-02-05 Processo e equipamento para a recuperacao de produtos quimicos de solucoes-maes de polpas exaustas PT81977B (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE8501465A SE447400B (sv)	1985-03-26	1985-03-26	Sett och anordning for kemikalieatervinning av massaavlutar i konventionell sodapanna

Publications (2)

Publication Number	Publication Date
PT81977A true PT81977A (en)	1986-03-01
PT81977B PT81977B (pt)	1993-01-29

Family

ID=20359633

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
PT81977A PT81977B (pt)	1985-03-26	1986-02-05	Processo e equipamento para a recuperacao de produtos quimicos de solucoes-maes de polpas exaustas

Country Status (8)

Country	Link
US (1)	US4710269A (pt)
CA (1)	CA1275761C (pt)
ES (1)	ES8705941A1 (pt)
FI (1)	FI77277C (pt)
FR (1)	FR2579639B1 (pt)
NZ (1)	NZ214981A (pt)
PT (1)	PT81977B (pt)
SE (1)	SE447400B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE465039B (sv) *	1989-11-23	1991-07-15	Chemrec Ab	Saett att framstaella koklutar med hoeg sulfiditet foer sulfatmassakokning
US5405496A (en) *	1989-11-23	1995-04-11	Chemrec Ab	Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking
FI102395B (fi) *	1991-11-26	1998-11-30	Ahlstrom Machinery Oy	Menetelmä energian talteenottamiseksi selluprosessien jäteliemistä
FI934028A7 (fi) *	1993-09-14	1995-03-15	Valtion Teknillinen Tutkimuskeskus	Jatkuvatoiminen menetelmä ja laite seeluloosavalmistuksen prosessijätteiden sisältämän energian hyödyntämiseksi
US7494637B2 (en)	2000-05-16	2009-02-24	Massachusetts Institute Of Technology	Thermal conversion of biomass to valuable fuels, chemical feedstocks and chemicals

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1074965B (de) *	1956-05-24	1960-02-04	Esso Research And Engineering Company, Elizabeth, N. J. (V. St. A.)	Verfahren zum Trocknen von Zellstoffablaugen
FR1443423A (fr) *	1964-05-22	1966-06-24	Submerged Comb	Procédé et appareil de chauffage, d'évaporation et de concentration
US3666619A (en) *	1969-04-08	1972-05-30	Calcasieu Paper Co Inc	Kraft pulp and paper recovery process
US3674630A (en) *	1969-11-14	1972-07-04	Copeland Systems Inc	Kraft liquor recovery system including physically isolated oxidation and reduction stages
SE378119B (pt) *	1972-04-04	1975-08-18	Angpanneforeningen
DE2506971C2 (de) *	1975-02-19	1982-04-08	Metallgesellschaft Ag, 6000 Frankfurt	Verfahren zur Konzentrierung hochviskoser Zellstoffablaugen
US4011129A (en) *	1975-04-11	1977-03-08	Domtar Limited	Pulp mill recovery system
US4135968A (en) *	1976-04-09	1979-01-23	Weyerhaeuser Company	Spent liquor treatment
US4439272A (en) *	1982-01-13	1984-03-27	Nguyen Xuan T	Pulp mill residual liquor recovery process
SE448007B (sv) *	1983-04-21	1987-01-12	Skf Steel Eng Ab	Forfarande och anordning for atervinning av kemikalier ur massaavlut

1985
- 1985-03-26 SE SE8501465A patent/SE447400B/sv not_active IP Right Cessation
1986
- 1986-01-21 FI FI860279A patent/FI77277C/fi not_active IP Right Cessation
- 1986-01-24 ES ES551239A patent/ES8705941A1/es not_active Expired
- 1986-01-24 CA CA000500331A patent/CA1275761C/en not_active Expired - Lifetime
- 1986-01-27 US US06/822,564 patent/US4710269A/en not_active Expired - Fee Related
- 1986-01-30 NZ NZ214981A patent/NZ214981A/en unknown
- 1986-02-05 PT PT81977A patent/PT81977B/pt not_active IP Right Cessation
- 1986-03-05 FR FR8603099A patent/FR2579639B1/fr not_active Expired - Fee Related

Also Published As

Publication number	Publication date
FI77277C (fi)	1989-02-10
US4710269A (en)	1987-12-01
PT81977B (pt)	1993-01-29
FI77277B (fi)	1988-10-31
SE8501465L (sv)	1986-09-27
CA1275761C (en)	1990-11-06
FR2579639A1 (fr)	1986-10-03
SE8501465D0 (sv)	1985-03-26
ES551239A0 (es)	1987-05-16
FR2579639B1 (fr)	1994-07-22
FI860279L (fi)	1986-09-27
ES8705941A1 (es)	1987-05-16
SE447400B (sv)	1986-11-10
FI860279A0 (fi)	1986-01-21
NZ214981A (en)	1988-02-29

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Legal Events

Date	Code	Title	Description
1993-01-29	FG3A	Patent granted, date of granting	Effective date: 19920709
1993-06-30	PC3A	Transfer or assignment	Free format text: 921216 CHEMREC AKTIEBOLAG SE
1993-06-30	PD3A	Change of proprietorship
1998-05-29	MM3A	Annulment or lapse	Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19980131