BR0203734A - Pulp treatment process employing a multiple effect evaporator - Google Patents

Pulp treatment process employing a multiple effect evaporator

Info

Publication number
BR0203734A
BR0203734A BR0203734-3A BR0203734A BR0203734A BR 0203734 A BR0203734 A BR 0203734A BR 0203734 A BR0203734 A BR 0203734A BR 0203734 A BR0203734 A BR 0203734A
Authority
BR
Brazil
Prior art keywords
liquor
treatment process
pulp treatment
effect evaporator
multiple effect
Prior art date
Application number
BR0203734-3A
Other languages
Portuguese (pt)
Inventor
Walter Thomas Mullen
Robert Roger Broekhuis
Reinaldo Passini
Original Assignee
Air Prod & Chem
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 Air Prod & Chem filed Critical Air Prod & Chem
Publication of BR0203734A publication Critical patent/BR0203734A/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor

Landscapes

  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSO DE TRATAMENTO DE POLPA QUE EMPREGA UM EVAPORADOR DE MULTIPLO EFEITO". Processo para remoção de poluentes de um licor subproduto, de um processo de tratamento de polpa, com o processo compreendendo injetar um gás contendo oxigênio no referido licor, e condensando o vapor d'água do gás de extração, de modo a produzir um condensado compreendendo poluentes. Também um processo de controlar a vazão e/ou a temperatura de um licor subproduto do processo para tratamento de polpa, sendo que tal processo compreende a injeção de um gás que contém oxigênio no licor em um reator, processando o licor em um tanque de flasheamento, de modo a gerar um licor resfriado e combinando, ao menos, uma porção do licor resfriado, com um licor novo, quando da entrada do licor novo, ou enquanto o licor novo está no reator."PULP TREATMENT PROCESS USING A MULTIPLE EFFECT EVAPORATOR". A process for removing pollutants from a by-product liquor from a pulp treatment process, with the process comprising injecting an oxygen-containing gas into said liquor, and condensing the water vapor from the extraction gas to produce a condensate comprising pollutants. Also a process for controlling the flow and / or temperature of a by-product liquor from the pulp treatment process, which process comprises injecting an oxygen-containing gas into the liquor in a reactor by processing the liquor in a flash tank. , so as to generate a cooled liquor and by combining at least a portion of the cooled liquor with a new liquor upon entry of the new liquor or while the new liquor is in the reactor.

BR0203734-3A 2001-09-24 2002-09-16 Pulp treatment process employing a multiple effect evaporator BR0203734A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/962,538 US20030056910A1 (en) 2001-09-24 2001-09-24 Method to lower the release of hazardous air pollutants from kraft recovery process

Publications (1)

Publication Number Publication Date
BR0203734A true BR0203734A (en) 2003-06-03

Family

ID=25506034

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0203734-3A BR0203734A (en) 2001-09-24 2002-09-16 Pulp treatment process employing a multiple effect evaporator

Country Status (3)

Country Link
US (1) US20030056910A1 (en)
BR (1) BR0203734A (en)
CA (1) CA2404010C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060254733A1 (en) * 2001-09-24 2006-11-16 Dunn Jerry P Method to lower the release of hazardous air pollutants from Kraft recovery process
RU2407768C2 (en) * 2005-06-03 2010-12-27 Андриц Аг Method to reduce power consumption in production of thermomechanical wood pulp by means of low-temperature grinding of wood pulp of low and medium concentration
FR2900147B1 (en) * 2006-04-19 2008-06-27 Otv Sa PROCESS FOR THE WET OXIDATION OF ESSENTIALLY HEATED EFFLUENTS BY SELF-COMBUSTIBILITY AND CORRESPONDING INSTALLATION
US8709204B1 (en) * 2013-03-14 2014-04-29 Veolia Water Solutions & Technologies North America Inc. System and process for recovering heat from weak black liquor in a wood pulping process
CN105905965A (en) * 2014-10-24 2016-08-31 吴昊 Work method of distillation and heat recovery system for industrial wastewater treatment
FI129507B (en) * 2019-12-20 2022-03-31 Andritz Oy A method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976273A (en) * 1958-09-10 1961-03-21 West Virginia Pulp & Paper Co Treatment of kraft black liquor and product
US3525666A (en) * 1964-08-31 1970-08-25 Mo Och Domsjoe Ab Process for preparing kraft pulping liquor from black liquor including separate carbonation with combustion gases and evaporation steps
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation
US4188260A (en) * 1977-05-05 1980-02-12 Erco Envirotech Ltd. Low effluent pulp mill, bleach plant operation
US4313788A (en) * 1980-05-12 1982-02-02 Air Products And Chemicals, Inc. Process for reducing oxygen consumption in black liquor oxidation
SE503351C2 (en) * 1994-09-06 1996-05-28 Ahlstroem Oy Process for the purification of secondary condensates in evaporation of liquor
CN1213197C (en) * 1999-02-15 2005-08-03 柯兰姆有限公司 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals
US20060254733A1 (en) * 2001-09-24 2006-11-16 Dunn Jerry P Method to lower the release of hazardous air pollutants from Kraft recovery process
FI119110B (en) * 2001-11-09 2008-07-31 Andritz Oy Process for the treatment of condensate
US20050076568A1 (en) * 2003-10-09 2005-04-14 Stigsson Lars Lennart Partial oxidation of cellulose spent pulping liquor

Also Published As

Publication number Publication date
CA2404010C (en) 2009-01-27
CA2404010A1 (en) 2003-03-24
US20030056910A1 (en) 2003-03-27

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]

Free format text: EM CONSONANCIA COM A RESOLUCAO NO 34 DO CGEN.

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements