SE7612085L - Forfarande for reglering av grensviskositeten hos sulfitmassa - Google Patents

Forfarande for reglering av grensviskositeten hos sulfitmassa

Info

Publication number
SE7612085L
SE7612085L SE7612085A SE7612085A SE7612085L SE 7612085 L SE7612085 L SE 7612085L SE 7612085 A SE7612085 A SE 7612085A SE 7612085 A SE7612085 A SE 7612085A SE 7612085 L SE7612085 L SE 7612085L
Authority
SE
Sweden
Prior art keywords
digestion
wood
intrinsic viscosity
combined
regulating
Prior art date
Application number
SE7612085A
Other languages
Unknown language ( )
English (en)
Other versions
SE433673B (sv
Inventor
R J Conca
J P Gray
T H Sloan
Original Assignee
Itt
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.)
Filing date
Publication date
Application filed by Itt filed Critical Itt
Publication of SE7612085L publication Critical patent/SE7612085L/sv
Publication of SE433673B publication Critical patent/SE433673B/sv

Links

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/228—Automation of the pulping processes
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/18—Sulfur containing
    • Y10T436/186—Sulfur dioxide

Landscapes

  • Paper (AREA)
SE7612085A 1975-11-03 1976-11-01 Forfarande for preparering av sulfitmassa med reglerad grensviskositet SE433673B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/628,328 US4086129A (en) 1975-11-03 1975-11-03 Process for controlling the intrinsic viscosity of sulfite pulp

Publications (2)

Publication Number Publication Date
SE7612085L true SE7612085L (sv) 1977-05-04
SE433673B SE433673B (sv) 1984-06-04

Family

ID=24518428

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7612085A SE433673B (sv) 1975-11-03 1976-11-01 Forfarande for preparering av sulfitmassa med reglerad grensviskositet

Country Status (5)

Country Link
US (1) US4086129A (sv)
JP (1) JPS5281104A (sv)
CA (1) CA1080910A (sv)
DE (1) DE2648896A1 (sv)
SE (1) SE433673B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718979A (en) * 1983-10-18 1988-01-12 Oy Advanced Forest Automation Ab Method for rapid determination of the contents of lignin, monosaccharides and organic acids in the process solutions of sulfite pulping
FI73014C (sv) * 1984-06-20 1987-08-10 Advanced Forest Automation Ab Förfarande för styrning av sulfitkokningar och hydrolytiska processer medelst en snabb furfuralanalysator.
ATE189715T1 (de) * 1995-10-09 2000-02-15 Siemens Ag Verfahren zur bestimmung des endpunktes der zellstoffkochung und anordnung zum steuern der kochzeit bei der zellstoffkochung in einem reaktor
SE516090C2 (sv) * 2000-05-31 2001-11-19 Kvaerner Pulping Tech Förfarande för reglering av en process för tillverkning av pappersmassa genom optisk mätning av mängden hexenuronsyra

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615339A (en) * 1947-11-21 1952-10-28 Holge Sigbjorn Paul Ebbinghaus Apparatus for sampling pulp
GB747108A (en) * 1953-10-01 1956-03-28 Courtaulds Ltd Improvements in and relating to the production of wood pulp
US3555204A (en) * 1968-01-12 1971-01-12 Ibm Electronic sweep magnetic scanning transducer
US3748044A (en) * 1969-09-02 1973-07-24 Abbott Lab Digital chemical analysis apparatus
US3941649A (en) * 1972-07-14 1976-03-02 Mo Och Domsjo Aktiebolag Process for obtaining a predetermined Kappa number in sulfate pulping
US3837217A (en) * 1972-10-19 1974-09-24 Exxon Research Engineering Co Measurement of polymer molecular weight distribution

Also Published As

Publication number Publication date
SE433673B (sv) 1984-06-04
JPS5327361B2 (sv) 1978-08-08
CA1080910A (en) 1980-07-08
US4086129A (en) 1978-04-25
JPS5281104A (en) 1977-07-07
DE2648896A1 (de) 1977-05-05

Similar Documents

Publication Publication Date Title
NZ181915A (en) Pulping lignocellulose material alkaline pulping liquor with an added cyclic keto-compound
ZA741287B (en) Delignification and bleaching of wood pulp with oxygen
ZA784979B (en) Organosolv delignification and saccharification process for lignocellulosic plant materials
SE8804578L (sv) Saett vid kontinuerlig uppslutningskokning av cellulosahaltigt fibermaterial
SE7612085L (sv) Forfarande for reglering av grensviskositeten hos sulfitmassa
AU497403B2 (en) Washing cellulose pulp
DK6977A (da) Fremgangsmade og tradstyr til automatisk detektering af tilstedeverelsen eller fraverelsen af traden i en spindemaskine
ES8506367A1 (es) Un procedimiento para la obtencion de pulpa para la fabricacion de papel
JPS52137004A (en) Process and apparatus for controlling flow from screenless liquid extractor by continuous wood chip digester
JPS51112903A (en) Process for digesting lignocellulose material with sulphites
BE845897A (fr) Procede de teinture continue de matieres fibreuses a base de cellulose avec des colorants azoiques
NO741634L (no) Fremgangsmåte ved sammenliming av tre eller et trefiberprodukt med et blandingsprodukt bestående av PVC og cellulosepulver.
JPS5263402A (en) Process for bleaching pulp with peroxides
JPS5296204A (en) Process for bleaching cellulose pulp with peroxides
FI47786C (sv) Förfarande för automatisk reglering av en blekningsprocess för cellulo sa.
CA928009A (en) Method for manufacturing sulfite pulp cooking liquor from sulfite pulp spent liquor
SU506363A1 (ru) Способ автоматического управлени тестомесильной машиной
SE7510677L (sv) Forfarande vid framstellning av cellulosa enligt sulfitmetoden
ES338917A1 (es) Un metodo de usar un liquido crudo para el procedimiento depulpacion de sulfito neutro para formar una pasta de madera semiquimica.
NO803083L (no) Fremgangsmaate og apparat for kontinuerlig koking av cellulose ved sulfitt- eller bisulfittprosessen
JPS5249306A (en) Process for bleaching pulp under normal pressure with air bubble
NZ185958A (en) Pulping liquor recyling;comination with sulphur cycle in bleaching plant
SE7909839L (sv) Kontinuerligt kokningsforfarande for cellulosa och kokare med anordningar for forfarandets genomforande
JPS51135698A (en) Method for measuring alkali levels
SE7506844L (sv) Forfarande for automatisk reglering av doseringen av tva kemikalier

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7612085-6

Effective date: 19930610

Format of ref document f/p: F