DE3173030D1 - A method of controlling a pressure-tight vessel for treating cellulosic pulp - Google Patents

A method of controlling a pressure-tight vessel for treating cellulosic pulp

Info

Publication number
DE3173030D1
DE3173030D1 DE8181890204T DE3173030T DE3173030D1 DE 3173030 D1 DE3173030 D1 DE 3173030D1 DE 8181890204 T DE8181890204 T DE 8181890204T DE 3173030 T DE3173030 T DE 3173030T DE 3173030 D1 DE3173030 D1 DE 3173030D1
Authority
DE
Germany
Prior art keywords
pulp
liquid
outlet
withdrawn
flow rate
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.)
Expired
Application number
DE8181890204T
Other languages
German (de)
Inventor
Finn Jacobsen
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.)
Metso Fiber Karlstad AB
Original Assignee
Kamyr 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.)
Filing date
Publication date
Application filed by Kamyr AB filed Critical Kamyr AB
Application granted granted Critical
Publication of DE3173030D1 publication Critical patent/DE3173030D1/en
Expired legal-status Critical Current

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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents

Abstract

Cellulosic pulp is treated to obtain simultaneous pulp flow and consistency control, utilizing a pressure-tight vessel (10) having a pulp inlet (12), pulp outlet (13), treatment liquid inlet (26), liquid extraction outlet (17), and movable screen (18) adjacent the liquid outlet (17). Pulp is fed into the pulp inlet (12) at a particular flow rate, and treated pulp is withdrawn through the pulp outlet (13) at a particular flow rate. The flow rate of the pulp being withdrawn is set and controlled by controlling the flow rate of the pulp fed into the pulp inlet (12). Liquid is withdrawn through the liquid outlet (17) at a particular flow rate, and the consistency of the pulp being withdrawn through the pulp outlet (13) is set and controlled by controlling the flow rate of liquid from the liquid outlet (17). Treatment liquid is fed into the liquid inlet (26), the nature of the pulp treatment and the qualities of the pulp being controlled by controlling the temperature and chemical makeup of the pulp introduced into the liquid inlet (26). A plurality of vessels (10, 10 min , 10 sec ) may be provided with the pulp withdrawn from each vessel fed to the subsequent vessel, and the liquid withdrawn from each vessel fed to the preceding vessel.
DE8181890204T 1980-12-31 1981-12-18 A method of controlling a pressure-tight vessel for treating cellulosic pulp Expired DE3173030D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22181280A 1980-12-31 1980-12-31

Publications (1)

Publication Number Publication Date
DE3173030D1 true DE3173030D1 (en) 1986-01-02

Family

ID=22829494

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181890204T Expired DE3173030D1 (en) 1980-12-31 1981-12-18 A method of controlling a pressure-tight vessel for treating cellulosic pulp

Country Status (8)

Country Link
EP (1) EP0055701B1 (en)
JP (1) JPS57133292A (en)
AT (1) ATE16614T1 (en)
BR (1) BR8108558A (en)
CA (1) CA1173603A (en)
DE (1) DE3173030D1 (en)
FI (1) FI69139C (en)
NO (1) NO157626C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908896A (en) * 1987-11-27 1990-03-20 Kamyr Ab Backflushing pressure diffuser screens
US4793161A (en) * 1987-11-27 1988-12-27 Kamyr Ab Effective diffuser/thickener screen backflushing
US5021127A (en) * 1987-12-01 1991-06-04 Kamyr, Inc. Extended delignification in pressure diffusers
US5066362A (en) * 1987-12-01 1991-11-19 Kamyr, Inc. Extended delignification in pressure diffusers
SE462435B (en) * 1988-11-11 1990-06-25 Kamyr Ab MAKE STABILIZING THE PRESSURE AND LIQUIDIZATION COUNTRIES IN A SILVER AND SILVER DEVICE
US4975148A (en) * 1988-12-06 1990-12-04 Ahlstromforetagen Svenska Ab Cold blow system for batch production of pulp
FI82082C (en) * 1989-03-29 1991-12-10 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MASSA.
US5538632A (en) * 1993-10-28 1996-07-23 Beloit Technologies, Inc. Multiple filter dynamic washer
WO2015080190A1 (en) * 2013-11-29 2015-06-04 三菱化学株式会社 Slurry cleaning device and cleaning system
FI130499B (en) * 2021-03-25 2023-10-10 Metsae Fibre Oy Method and apparatus for treating mixtures of liquids and solids

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE312269B (en) * 1964-12-17 1969-07-07 T Aremaa
FR1468440A (en) * 1965-02-17 1967-02-03 Kamyr Ab Process for acting on the consistency of cellulose pulp in bleaching plants
US3807202A (en) * 1969-09-30 1974-04-30 K Gunkel Continuous washing apparatus for pulp stock and the like
SE394821B (en) * 1975-04-15 1977-07-11 Kamyr Ab METHOD AND DEVICE FOR DRAINING MOVEMENT SUSPENSIONS
GB1566099A (en) * 1976-11-11 1980-04-30 Largo Lintec Ltd Pulping cellulosic material
US4212239A (en) * 1979-02-15 1980-07-15 Hobart Corporation Method and apparatus for removing moisture from wet pulp

Also Published As

Publication number Publication date
ATE16614T1 (en) 1985-12-15
CA1173603A (en) 1984-09-04
JPS57133292A (en) 1982-08-17
NO814440L (en) 1982-07-01
FI69139B (en) 1985-08-30
NO157626C (en) 1988-04-20
BR8108558A (en) 1982-10-19
FI814173L (en) 1982-07-01
FI69139C (en) 1985-12-10
EP0055701A1 (en) 1982-07-07
NO157626B (en) 1988-01-11
EP0055701B1 (en) 1985-11-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition