IT8446876A1 - EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF CRUDE OR WHITE CHEMICAL WOOD PASTES WITH CONTINUOUS IMPREGNATION CYCLE. - Google Patents

EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF CRUDE OR WHITE CHEMICAL WOOD PASTES WITH CONTINUOUS IMPREGNATION CYCLE.

Info

Publication number
IT8446876A1
IT8446876A1 IT1984A46876A IT4687684A IT8446876A1 IT 8446876 A1 IT8446876 A1 IT 8446876A1 IT 1984A46876 A IT1984A46876 A IT 1984A46876A IT 4687684 A IT4687684 A IT 4687684A IT 8446876 A1 IT8446876 A1 IT 8446876A1
Authority
IT
Italy
Prior art keywords
tank
crude
procedure
production
equipment
Prior art date
Application number
IT1984A46876A
Other languages
Italian (it)
Other versions
IT8446876A0 (en
IT1181139B (en
Original Assignee
Sicem Saga Spa
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 Sicem Saga Spa filed Critical Sicem Saga Spa
Priority to IT46876/84A priority Critical patent/IT1181139B/en
Publication of IT8446876A0 publication Critical patent/IT8446876A0/en
Priority to AT85201730T priority patent/ATE41793T1/en
Priority to EP85201730A priority patent/EP0181028B1/en
Priority to DE8585201730T priority patent/DE3569133D1/en
Publication of IT8446876A1 publication Critical patent/IT8446876A1/en
Application granted granted Critical
Publication of IT1181139B publication Critical patent/IT1181139B/en

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
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

An apparatus and process for producing chemimechanical wood pulp wherein the mixture is fed from a first tank, into which the product and reagents are continuously fed, to a series of successive tanks of which at least one can be kept substantially empty in turn, the level of the product suspension present in each tank being able to be externally set so that the flow from one tank to another and thus the total product reaction time become controlled in accordance with said level, it also being possible to keep those products simultaneously present in the plant but with different characteristics separate from each other by virtue of said tank which is kept substantially empty in turn.
IT46876/84A 1984-11-09 1984-11-09 EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF RAW OR WHITENED SEMIMECHANICAL WOOD DOORS WITH CONTINUOUS IMPREGNATION CYCLE IT1181139B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT46876/84A IT1181139B (en) 1984-11-09 1984-11-09 EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF RAW OR WHITENED SEMIMECHANICAL WOOD DOORS WITH CONTINUOUS IMPREGNATION CYCLE
AT85201730T ATE41793T1 (en) 1984-11-09 1985-10-23 APPARATUS AND PROCESS FOR THE PRODUCTION OF RAW OR BLEACHED CHEMI-MECHANICAL WOOD PULP BY A CONTINUOUS IMPREGNATION PROCESS.
EP85201730A EP0181028B1 (en) 1984-11-09 1985-10-23 Apparatus and process for producing raw of bleached chemimechanical wood pulps by a continuous impregnation process
DE8585201730T DE3569133D1 (en) 1984-11-09 1985-10-23 Apparatus and process for producing raw of bleached chemimechanical wood pulps by a continuous impregnation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT46876/84A IT1181139B (en) 1984-11-09 1984-11-09 EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF RAW OR WHITENED SEMIMECHANICAL WOOD DOORS WITH CONTINUOUS IMPREGNATION CYCLE

Publications (3)

Publication Number Publication Date
IT8446876A0 IT8446876A0 (en) 1984-11-09
IT8446876A1 true IT8446876A1 (en) 1986-05-09
IT1181139B IT1181139B (en) 1987-09-23

Family

ID=11260077

Family Applications (1)

Application Number Title Priority Date Filing Date
IT46876/84A IT1181139B (en) 1984-11-09 1984-11-09 EQUIPMENT AND PROCEDURE FOR THE PRODUCTION OF RAW OR WHITENED SEMIMECHANICAL WOOD DOORS WITH CONTINUOUS IMPREGNATION CYCLE

Country Status (4)

Country Link
EP (1) EP0181028B1 (en)
AT (1) ATE41793T1 (en)
DE (1) DE3569133D1 (en)
IT (1) IT1181139B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785917B1 (en) * 1998-11-16 2001-01-12 Wood & Pulp Ltd PROCESS AND PLANT FOR PRODUCING PAPER PULP

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL43994C (en) * 1934-07-27
FR1393492A (en) * 1964-02-11 1965-03-26 Du Pin Cellulose Pulp bleaching improvement
FR1562448A (en) * 1967-04-15 1969-04-04

Also Published As

Publication number Publication date
EP0181028A2 (en) 1986-05-14
DE3569133D1 (en) 1989-05-03
EP0181028A3 (en) 1987-01-28
EP0181028B1 (en) 1989-03-29
ATE41793T1 (en) 1989-04-15
IT8446876A0 (en) 1984-11-09
IT1181139B (en) 1987-09-23

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960927