CA2404010A1 - Method to lower the release of hazardous air pollutants from kraft recovery process - Google Patents

Method to lower the release of hazardous air pollutants from kraft recovery process Download PDF

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Publication number
CA2404010A1
CA2404010A1 CA002404010A CA2404010A CA2404010A1 CA 2404010 A1 CA2404010 A1 CA 2404010A1 CA 002404010 A CA002404010 A CA 002404010A CA 2404010 A CA2404010 A CA 2404010A CA 2404010 A1 CA2404010 A1 CA 2404010A1
Authority
CA
Canada
Prior art keywords
liquor
release
recovery process
air pollutants
new
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
CA002404010A
Other languages
French (fr)
Other versions
CA2404010C (en
Inventor
Walter Thomas Mullen
Robert Roger Broekhuis
Reinaldo Passini
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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals 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 Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Publication of CA2404010A1 publication Critical patent/CA2404010A1/en
Application granted granted Critical
Publication of CA2404010C publication Critical patent/CA2404010C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

A method for removal of pollutants from a pulping process byproduct liquor, the method comprising injecting an oxygen-containing gas into said liquor and condensin g the water vapor from the stripping gas so as to produce a condensate comprising pollutants. Also a method of controlling the flow rate and/or temperature of a pulping proces s byproduct liquor, the process comprising injecting an oxygen-containing gas into the liquor in a reactor, processing the liquor in a flash tank so as to create a cooled liquor and combining at a least a portion of the cooled liquor with new liquor as the new liquor enters, or while the new liquor is in, the reactor.
CA002404010A 2001-09-24 2002-09-17 Method to lower the release of hazardous air pollutants from kraft recovery process Expired - Fee Related CA2404010C (en)

Applications Claiming Priority (2)

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
US09/962,538 2001-09-24

Publications (2)

Publication Number Publication Date
CA2404010A1 true CA2404010A1 (en) 2003-03-24
CA2404010C CA2404010C (en) 2009-01-27

Family

ID=25506034

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002404010A Expired - Fee Related CA2404010C (en) 2001-09-24 2002-09-17 Method to lower the release of hazardous air pollutants from kraft recovery process

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
BR0203734A (en) 2003-06-03
US20030056910A1 (en) 2003-03-27

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130917

MKLA Lapsed

Effective date: 20130917