EP0034560A3 - Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method - Google Patents

Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method Download PDF

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Publication number
EP0034560A3
EP0034560A3 EP81630016A EP81630016A EP0034560A3 EP 0034560 A3 EP0034560 A3 EP 0034560A3 EP 81630016 A EP81630016 A EP 81630016A EP 81630016 A EP81630016 A EP 81630016A EP 0034560 A3 EP0034560 A3 EP 0034560A3
Authority
EP
European Patent Office
Prior art keywords
mass
thermo
compacted
steam
chips
Prior art date
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.)
Withdrawn
Application number
EP81630016A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034560A2 (en
Inventor
Llewellyn E. Clark
George E. Rosato
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.)
Beloit Corp
Original Assignee
Beloit Corp
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 Beloit Corp filed Critical Beloit Corp
Publication of EP0034560A2 publication Critical patent/EP0034560A2/en
Publication of EP0034560A3 publication Critical patent/EP0034560A3/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/26—Driving or feeding arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Disintegrating Or Milling (AREA)
EP81630016A 1980-02-14 1981-02-13 Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method Withdrawn EP0034560A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12137980A 1980-02-14 1980-02-14
US121379 1980-02-14

Publications (2)

Publication Number Publication Date
EP0034560A2 EP0034560A2 (en) 1981-08-26
EP0034560A3 true EP0034560A3 (en) 1981-09-02

Family

ID=22396325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630016A Withdrawn EP0034560A3 (en) 1980-02-14 1981-02-13 Method and apparatus for efficiently producing cellulosic pulp by the thermo-mechanical pulping method

Country Status (7)

Country Link
EP (1) EP0034560A3 (enrdf_load_stackoverflow)
JP (2) JPS56128388A (enrdf_load_stackoverflow)
AU (1) AU6734881A (enrdf_load_stackoverflow)
CA (1) CA1136912A (enrdf_load_stackoverflow)
ES (1) ES500079A0 (enrdf_load_stackoverflow)
FI (1) FI810330L (enrdf_load_stackoverflow)
GB (1) GB2069560B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1240456A (en) * 1983-10-20 1988-08-16 Kamyr, Inc. Mechanical pulping
US6899791B2 (en) 1997-08-08 2005-05-31 Andritz Inc. Method of pretreating lignocellulose fiber-containing material in a pulp refining process
AT412787B (de) * 2003-03-10 2005-07-25 Andritz Ag Maschf Verfahren und vorrichtung zum austragen von lignozellulosem rohmaterial aus einem kocher und zur förderung des rohmaterials zu einem refiner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB569370A (en) * 1942-06-20 1945-05-22 American Defibrator Improvements in apparatus for the production of wood or like fibrous pulp
US2931586A (en) * 1957-08-16 1960-04-05 American Defibrator Grinding device for the breaking down of wood fibres
US3471364A (en) * 1966-06-20 1969-10-07 Bauer Bros Co Apparatus for subjecting cellulosic material to counterflow of conditioning fluid
FR2393880A1 (fr) * 1977-06-08 1979-01-05 Beloit Corp Procede et appareil thermomecaniques de formation d'une pate a papier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB569370A (en) * 1942-06-20 1945-05-22 American Defibrator Improvements in apparatus for the production of wood or like fibrous pulp
US2931586A (en) * 1957-08-16 1960-04-05 American Defibrator Grinding device for the breaking down of wood fibres
US3471364A (en) * 1966-06-20 1969-10-07 Bauer Bros Co Apparatus for subjecting cellulosic material to counterflow of conditioning fluid
FR2393880A1 (fr) * 1977-06-08 1979-01-05 Beloit Corp Procede et appareil thermomecaniques de formation d'une pate a papier

Also Published As

Publication number Publication date
JPS6348720Y2 (enrdf_load_stackoverflow) 1988-12-14
FI810330A7 (fi) 1981-08-10
ES8201662A1 (es) 1982-01-01
JPS60165497U (ja) 1985-11-02
EP0034560A2 (en) 1981-08-26
CA1136912A (en) 1982-12-07
GB2069560A (en) 1981-08-26
GB2069560B (en) 1983-11-09
AU6734881A (en) 1981-10-01
FI810330L (fi) 1981-08-15
ES500079A0 (es) 1982-01-01
JPS56128388A (en) 1981-10-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR IT NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT NL SE

17P Request for examination filed

Effective date: 19811124

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840103

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ROSATO, GEORGE E.

Inventor name: CLARK, LLEWELLYN E.