EP1193341A1 - Procédé et appareil pour la préparation de liqueur verte - Google Patents

Procédé et appareil pour la préparation de liqueur verte Download PDF

Info

Publication number: EP1193341A1
Authority: EP; European Patent Office
Prior art keywords: vent gas; green liquor; dissolver; condenser; liquor
Prior art date: 2000-09-29
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

EP01000506A

Other languages

German (de)

English (en)

Other versions

EP1193341A9 (fr

EP1193341B1 (fr

Inventor

Pekka Ahtila

Tuomo Ruohola

Ari Tamminen

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.)

Valmet Power Oy

Original Assignee

Kvaerner Pulping Oy

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.)

2000-09-29

Filing date

2001-09-27

Publication date

2002-04-03

2001-09-27 Application filed by Kvaerner Pulping Oy filed Critical Kvaerner Pulping Oy

2002-04-03 Publication of EP1193341A1 publication Critical patent/EP1193341A1/fr

2002-08-07 Publication of EP1193341A9 publication Critical patent/EP1193341A9/fr

2005-05-11 Application granted granted Critical

2005-05-11 Publication of EP1193341B1 publication Critical patent/EP1193341B1/fr

2021-09-27 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- 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
- D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor

Definitions

the invention further relates to an arrangement for treating green liquor, the arrangement comprising a dissolver, wherein melt from a recovery boiler is applied for dissolution, means for applying a solvent to the dissolver, washing means for washing vent gas separated in the dissolver, and cooling means for cooling the green liquor generated in the dissolver.
venting Melt dispersion and the heat and dissolution heat in the melt cause strong evaporation of the water, which is usually called venting.
the amount and composition of the vent gas produced vary quite much depending on e.g. the recovery boiler, its running situation and the solution used in melt dispersion. For one ton of dry matter of combusted black liquor, about 400 to 1600 m 3 of vent gas may be produced.
the temperature of the vent gas may also vary, being on an average about 80 to 90oC.
the water content in the vent gas may vary, being typically about 0.33 to 1.94 kg H 2 O/kg dry air.
the vent gas also contains odorous sulphur compounds that mainly originate from the reducing zone of the recovery boiler furnace.
vent gas is washed in a separate scrubber, from where the washing solution is typically led back to the dissolver, the vent gas being led to further processing.
the arrangement of the invention is characterized in that the means for washing the vent gas generated in the dissolver and for cooling the green liquor generated in the dissolver comprise a separate vent gas scrubber cooler to the upper part of which the green liquor and the vent gas are fed and from the lower part of which at least part of the green liquor is returned to the dissolver, and the vent gas is discharged, that the vent gas scrubber cooler comprises a separate condenser onto whose surface the green liquor is applied and which condensates the vent gas flowing thereby and the green liquor flowing on its surface at the same time as the green liquor washes sulphurous odour gases and dust-like solid matter particles from the vent gas.
the arrangement further comprises a vent gas scrubber cooler 4, wherein a condenser 5 is arranged.
a condenser 5 Through the condenser 5, cooling water is applied on the counterflow principle to its lower end in accordance with line 6, and discharged from the upper end of the condenser in accordance with line 7.
Vent gas generated in the dispersion of melt for example, is applied from the dissolver via a channel denoted by double line 8 to the upper end of the vent gas scrubber cooler 4.
warm green liquor is applied from the dissolver to the upper end of the vent gas scrubber cooler 4 as shown by line 9.
weak white liquor is applied to the dissolver 2 as shown by line 13.
part of the weak white liquor can also be applied to the upper end of the vent gas scrubber cooler as shown by line 14 or to some point on the condensing surface of the condenser 5 as shown by line 15.
oxidized white liquor and/or water and/or NaOH solution can also be applied to either the green liquor nozzles or via separate nozzles, as shown by line 16, should this be necessary because of the concentration of the green liquor solution, for example.

Landscapes

Paper (AREA)

EP01000506A 2000-09-29 2001-09-27 Procédé et appareil pour la préparation de liqueur verte Expired - Lifetime EP1193341B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FI20002153A FI20002153A7 (fi)	2000-09-29	2000-09-29	Menetelmä ja sovitelma liotussäiliössä
FI20002153		2000-09-29

Publications (3)

Publication Number	Publication Date
EP1193341A1 true EP1193341A1 (fr)	2002-04-03
EP1193341A9 EP1193341A9 (fr)	2002-08-07
EP1193341B1 EP1193341B1 (fr)	2005-05-11

Family

ID=8559197

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP01000506A Expired - Lifetime EP1193341B1 (fr)	2000-09-29	2001-09-27	Procédé et appareil pour la préparation de liqueur verte

Country Status (3)

Country	Link
EP (1)	EP1193341B1 (fr)
DE (1)	DE60110709D1 (fr)
FI (1)	FI20002153A7 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2018201241A1 (fr)	2017-05-03	2018-11-08	Fpinnovations	Température de colonne d'évent en tant que variable par action directe pour une commande tta de dissolveur de salin
SE541168C2 (en) *	2017-01-20	2019-04-23	Valmet Technologies Oy	Method and system of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4799994A (en) *	1985-04-29	1989-01-24	Oy Tampella Ab	Process for cooking and bleaching pulp
US4808264A (en) *	1985-06-03	1989-02-28	Kignell Jean Erik	Process for chemicals and energy recovery from waste liquors
WO1993024703A1 (fr) *	1992-05-29	1993-12-09	Chemrec Aktiebolag	Procede de recuperation d'energie dans un gaz combustible
US5509999A (en) *	1993-03-24	1996-04-23	Kamyr, Inc.	Treatment of bleach plant effluents
WO1997023687A1 (fr) *	1995-12-22	1997-07-03	Combustion Engineering, Inc.	Procede de gazeification de liqueur noire et regeneration de la liqueur de reduction en pate
US5735331A (en) *	1995-09-29	1998-04-07	Ahlstrom Machinery Corporation	Method and apparatus for regulating the temperature in a chemical melt dissolving tank
US6113739A (en) *	1995-06-15	2000-09-05	Kvaerner Pulping Ab	Process for washing gas formed by gasifying black liquor

2000
- 2000-09-29 FI FI20002153A patent/FI20002153A7/fi not_active Application Discontinuation
2001
- 2001-09-27 EP EP01000506A patent/EP1193341B1/fr not_active Expired - Lifetime
- 2001-09-27 DE DE60110709T patent/DE60110709D1/de not_active Expired - Lifetime

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4799994A (en) *	1985-04-29	1989-01-24	Oy Tampella Ab	Process for cooking and bleaching pulp
US4808264A (en) *	1985-06-03	1989-02-28	Kignell Jean Erik	Process for chemicals and energy recovery from waste liquors
WO1993024703A1 (fr) *	1992-05-29	1993-12-09	Chemrec Aktiebolag	Procede de recuperation d'energie dans un gaz combustible
US5509999A (en) *	1993-03-24	1996-04-23	Kamyr, Inc.	Treatment of bleach plant effluents
US6113739A (en) *	1995-06-15	2000-09-05	Kvaerner Pulping Ab	Process for washing gas formed by gasifying black liquor
US5735331A (en) *	1995-09-29	1998-04-07	Ahlstrom Machinery Corporation	Method and apparatus for regulating the temperature in a chemical melt dissolving tank
WO1997023687A1 (fr) *	1995-12-22	1997-07-03	Combustion Engineering, Inc.	Procede de gazeification de liqueur noire et regeneration de la liqueur de reduction en pate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE541168C2 (en) *	2017-01-20	2019-04-23	Valmet Technologies Oy	Method and system of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler
US10487449B2 (en)	2017-01-20	2019-11-26	Valmet Technologies Oy	Method and system of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler
US10640924B2 (en)	2017-01-20	2020-05-05	Valmet Technologies Oy	System of thermal recovery relating to the operation of a dissolver of a chemical recovery boiler
WO2018201241A1 (fr)	2017-05-03	2018-11-08	Fpinnovations	Température de colonne d'évent en tant que variable par action directe pour une commande tta de dissolveur de salin
EP3619356A4 (fr) *	2017-05-03	2021-01-06	FPInnovations	Température de colonne d'évent en tant que variable par action directe pour une commande tta de dissolveur de salin
US11441265B2 (en)	2017-05-03	2022-09-13	Fpinnovations	Vent stack temperature as a feedforward variable for smelt dissolving tank TTA control

Also Published As

Publication number	Publication date
DE60110709D1 (de)	2005-06-16
EP1193341A9 (fr)	2002-08-07
FI20002153L (fi)	2002-03-30
FI20002153A0 (fi)	2000-09-29
FI20002153A7 (fi)	2002-03-30
EP1193341B1 (fr)	2005-05-11

Publication	Publication Date	Title
US4284609A (en)	1981-08-18	Condensation cleaning of particulate laden gases
US3870585A (en)	1975-03-11	Apparatus and method for evaporative concentration of aqueous solutions and slurries
CZ37695A3 (en)	1996-10-16	Process for preparing a production gas and apparatus for making the same
EP0532625B1 (fr)	1995-04-19	Procede de preparation d'une solution aqueuse de composes de sodium
US2593503A (en)	1952-04-22	Method of recovering heat and chemicals from the residual liquor resulting from the digestion of cellulosic fibrous material
US2406867A (en)	1946-09-03	Method of treating lignocellulosic material
US3574051A (en)	1971-04-06	Recovery of black liquor
US2840454A (en)	1958-06-24	Method and apparatus for recovering heat and chemicals from the residual liquor resulting from the digestion of cellulosic fibrous material in an alkaline liquor
EP1193341B1 (fr)	2005-05-11	Procédé et appareil pour la préparation de liqueur verte
US3273961A (en)	1966-09-20	Regeneration of magnesium bisulphite pulping liquor and absorption of sulphur dioxide during regeneration
US20020021994A1 (en)	2002-02-21	Sulfur recovery gasification process for spent liquor at high temperature and high pressure
US5984987A (en)	1999-11-16	Black liquor gasification process
US3127237A (en)	1964-03-31	Conversion of potassium sulphate to potassium carbonate
US4548621A (en)	1985-10-22	Condensing zinc vapor
US4409740A (en)	1983-10-18	Yellowcake (U3 O8) dust, water and heat recovery process and apparatus
US2179456A (en)	1939-11-07	Method of and apparatus for treating pulp residual liquor
US3844879A (en)	1974-10-29	System for removing sodium chloride contaminants from a magnesium base pulping process
US4035228A (en)	1977-07-12	Recovery process and apparatus for alkali metal-containing waste liquor
US5817163A (en)	1998-10-06	Aluminum scrap cleaning and decarbonization
US3431165A (en)	1969-03-04	Process for chemical recovery and odor abatement of kraft liquor
SU1131946A1 (ru)	1984-12-30	Способ регенерации парогазовых выбросов сульфатного производства целлюлозы
FI68687B (fi)	1985-06-28	Foerfarande vid lutaotervinning efter sodahuspannan vid sulfatprocesser
US3574556A (en)	1971-04-13	Process and apparatus for kraft pulp mill chemical recovery and odor abatement
US11655589B2 (en)	2023-05-23	Method and a system for adjusting PH of green liquor dregs
Grace	1987	Chemical recovery technology-a review

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