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BRPI0805757A2 - method and system for measuring and controlling the chip level of the digester or impregnation container by measuring chip pressure - Google Patents

method and system for measuring and controlling the chip level of the digester or impregnation container by measuring chip pressure

Info

Publication number
BRPI0805757A2
BRPI0805757A2 BRPI0805757-5A BRPI0805757A BRPI0805757A2 BR PI0805757 A2 BRPI0805757 A2 BR PI0805757A2 BR PI0805757 A BRPI0805757 A BR PI0805757A BR PI0805757 A2 BRPI0805757 A2 BR PI0805757A2
Authority
BR
Brazil
Prior art keywords
measuring
pressure
chip
digester
container
Prior art date
Application number
BRPI0805757-5A
Other languages
Portuguese (pt)
Inventor
Sami Tuuri
Original Assignee
Andritz Inc
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 Andritz Inc filed Critical Andritz Inc
Publication of BRPI0805757A2 publication Critical patent/BRPI0805757A2/en

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
    • D21C7/00—Digesters
    • D21C7/12—Devices for regulating or controlling

Landscapes

  • Paper (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

MéTODO E SISTEMA PARA MEDIR E CONTROLAR O NìVEL DE CAVACOS DO RECIPIENTE DIGESTOR OU DE IMPREGNAçãO POR MEDIR A PRESSãO DOS CAVACOS. A presente invenção refere-se a um método e sistema para determinar a pressão dos cavacos em um recipiente contendo uma pasta semi-fluida de material lignocelulósico, incluindo: perceber uma pressão estática total da pasta semifluida no recipiente; perceber uma pressão hidrostática da substância semifluida no recipiente, e determinar a pressão dos cavacos com base em uma diferença da pressão estática total da pasta semifluida e a pressão hidrostática percebida da solução.METHOD AND SYSTEM FOR MEASURING AND CONTROLING THE LEVEL OF THE DIGESTER CONTAINER OR INPREGNATION BY MEASURING THE PRESSURE OF THE HORSES. The present invention relates to a method and system for determining chip pressure in a container containing a semi-fluid slurry of lignocellulosic material, including: realizing a total static pressure of the semi-fluid slurry in the container; perceive a hydrostatic pressure of the semifluid substance in the container, and determine the chip pressure based on a difference of the total static pressure of the semifluid paste and the perceived hydrostatic pressure of the solution.

BRPI0805757-5A 2008-01-30 2008-12-31 method and system for measuring and controlling the chip level of the digester or impregnation container by measuring chip pressure BRPI0805757A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2465408P 2008-01-30 2008-01-30
US12/107,179 US20090188641A1 (en) 2008-01-30 2008-04-22 Method and system for measuring and controlling digester or impregnation vessel chip level by measuring chip pressure

Publications (1)

Publication Number Publication Date
BRPI0805757A2 true BRPI0805757A2 (en) 2009-09-22

Family

ID=40898031

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0805757-5A BRPI0805757A2 (en) 2008-01-30 2008-12-31 method and system for measuring and controlling the chip level of the digester or impregnation container by measuring chip pressure

Country Status (6)

Country Link
US (1) US20090188641A1 (en)
JP (1) JP2009179927A (en)
CN (1) CN101532896A (en)
BR (1) BRPI0805757A2 (en)
CA (1) CA2635309A1 (en)
CL (1) CL2008003737A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012006396A1 (en) * 2010-07-07 2012-01-12 Andritz Inc. Chip feed and steaming system and method for batch digester
US8916023B2 (en) 2011-03-18 2014-12-23 Andritz, Inc. Vapor phase hydrolysis vessel and methods related thereto
US10609475B2 (en) 2014-12-05 2020-03-31 Stages Llc Active noise control and customized audio system
US9980075B1 (en) 2016-11-18 2018-05-22 Stages Llc Audio source spatialization relative to orientation sensor and output
EP3605034B1 (en) * 2018-07-31 2021-09-22 Bühler AG Inlet module for a roller mill, roller mill with such an inlet module, method for determining the fill level of a storage tank of a roller mill
FI128975B (en) 2018-11-22 2021-04-15 Andritz Oy An arrangement for installation of monitoring sensors of a treatment vessel for lignocelllulosic material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE377347B (en) * 1973-12-10 1975-06-30 Kamyr Ab
JPS5619596U (en) * 1979-07-25 1981-02-20
JPH0672383B2 (en) * 1986-03-20 1994-09-14 エービービー・ガデリウス株式会社 Hanging monitoring device for digester for pulp production
JPH06257087A (en) * 1993-03-04 1994-09-13 New Oji Paper Co Ltd Cooking method for pulp chips
US5635025A (en) * 1994-12-05 1997-06-03 Ahlstrom Machinery Inc. Digester system containing a single vessel serving as all of a chip bin, steaming vessel, and chip chute
JPH09132891A (en) * 1995-11-02 1997-05-20 Fujiwara Techno Art:Kk Control method for supplying steam in cooking device
US6174411B1 (en) * 1997-02-10 2001-01-16 Andritz-Ahlstrom Inc. Continuous digester with inverted top separator
SE522877C2 (en) * 1998-11-17 2004-03-16 Andritz Inc Process for operating a continuous cellulose pulp cooker and a cooker
SE0104272L (en) * 2001-12-17 2002-11-12 Kvaerner Pulping Tech Process and arrangement for impregnating wood chips
FI123011B (en) * 2005-01-05 2012-09-28 Metso Paper Inc Method for regulating a cellulose cooking process

Also Published As

Publication number Publication date
US20090188641A1 (en) 2009-07-30
CA2635309A1 (en) 2009-07-30
CN101532896A (en) 2009-09-16
JP2009179927A (en) 2009-08-13
CL2008003737A1 (en) 2010-02-19

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 3A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: NAO APRESENTADA A GUIA DE CUMPRIMENTO DE EXIGENCIA. REFERENTE A 3A ANUIDADE.