GB2016954A - Production of mechanical wood pulp - Google Patents

Production of mechanical wood pulp

Info

Publication number
GB2016954A
GB2016954A GB7909555A GB7909555A GB2016954A GB 2016954 A GB2016954 A GB 2016954A GB 7909555 A GB7909555 A GB 7909555A GB 7909555 A GB7909555 A GB 7909555A GB 2016954 A GB2016954 A GB 2016954A
Authority
GB
United Kingdom
Prior art keywords
wood
pressure
production
wood pulp
grinding
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.)
Granted
Application number
GB7909555A
Other versions
GB2016954B (en
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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
Priority claimed from DE19782812299 external-priority patent/DE2812299A1/en
Priority claimed from DE2851601A external-priority patent/DE2851601C3/en
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of GB2016954A publication Critical patent/GB2016954A/en
Application granted granted Critical
Publication of GB2016954B publication Critical patent/GB2016954B/en
Expired 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
    • D21B1/04—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
    • 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
    • D21B1/18—Disintegrating in mills in magazine-type machines
    • D21B1/20—Disintegrating in mills in magazine-type machines with chain feed
    • 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
    • D21B1/18—Disintegrating in mills in magazine-type machines
    • D21B1/24—Disintegrating in mills in magazine-type machines of the pocket type

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

In wood pulping machines of the type in which wood is pulped by the action of a grinding member, in the presence of water, the grinding is carried out under pressure with water temperatures in excess of 100 DEG C. A pulping machine is provided in which the grinding wheel (1) is mounted in a pressure-tight housing (2), the inlets for wood to be pulped having valves (7, 8) for preserving the housing pressure. Pulp is discharged under pressure via an outlet pipe (10). Reduction to atmospheric pressure can be effected by various means, such as hydro-cyclone (19). (Figure 1) <IMAGE>
GB7909555A 1978-03-21 1979-03-19 Produktion of mechanical wood pulp Expired GB2016954B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782812299 DE2812299A1 (en) 1978-03-21 1978-03-21 Wood pulp is produced from disintegrated tree trunks - by carrying out process at pressure and supplying water at above 100 degrees C
DE2851601A DE2851601C3 (en) 1978-11-29 1978-11-29 Method and device for producing wood pulp in a wood grinder

Publications (2)

Publication Number Publication Date
GB2016954A true GB2016954A (en) 1979-10-03
GB2016954B GB2016954B (en) 1983-02-23

Family

ID=25774116

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909555A Expired GB2016954B (en) 1978-03-21 1979-03-19 Produktion of mechanical wood pulp

Country Status (8)

Country Link
JP (1) JPS54134101A (en)
ES (1) ES478943A1 (en)
FI (1) FI790917A (en)
FR (2) FR2420598A1 (en)
GB (1) GB2016954B (en)
IT (1) IT1112416B (en)
NO (1) NO790935L (en)
SE (1) SE435074C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728917A2 (en) 2005-06-03 2006-12-06 Andritz AG Method and system for energy savings in TMP by high temperature LC/MC refining of pulp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015722A1 (en) * 1980-04-24 1981-10-29 J.M. Voith Gmbh, 7920 Heidenheim DEVICE FOR PRODUCING WOOD GRIND

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE593533C (en) * 1929-04-20 1935-09-17 Johannes Tamaschke Method of obtaining wood pulp
FR1543590A (en) * 1966-10-20 1968-10-25 Defibrator Ab Dehydrators for fibrous pastes
DE1703901B1 (en) * 1968-07-26 1971-02-11 Hombak Maschinenfab Kg Device for the production of thin wood chips
US3808090A (en) * 1970-10-01 1974-04-30 F Luhde Mechanical abrasion of wood particles in the presence of water and in an inert gaseous atmosphere
SE371656B (en) * 1973-04-05 1974-11-25 Wallen & Co Ab Lennart
SE372299B (en) * 1973-04-27 1974-12-16 Reinhall Rolf
US4059237A (en) * 1974-02-15 1977-11-22 Oy Keskuslaboratorio - Centrallaboratorium, Ab System for feeding a double disc refiner
SE420427C (en) * 1978-02-16 1984-10-15 Mo Och Domsjoe Ab PROCEDURE FOR THE PREPARATION OF GRINDING PAPER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728917A2 (en) 2005-06-03 2006-12-06 Andritz AG Method and system for energy savings in TMP by high temperature LC/MC refining of pulp
EP1728917A3 (en) * 2005-06-03 2009-07-15 Andritz AG Method and system for energy savings in TMP by high temperature LC/MC refining of pulp

Also Published As

Publication number Publication date
IT7921058A0 (en) 1979-03-16
FR2541329A1 (en) 1984-08-24
ES478943A1 (en) 1980-02-01
FR2420598A1 (en) 1979-10-19
FI790917A (en) 1979-09-22
NO790935L (en) 1979-09-24
SE435074B (en) 1984-09-03
FR2541329B1 (en) 1986-07-25
SE7902493L (en) 1979-09-22
IT1112416B (en) 1986-01-13
GB2016954B (en) 1983-02-23
JPS6317957B2 (en) 1988-04-15
SE435074C (en) 1986-07-14
JPS54134101A (en) 1979-10-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960319