SE0402705L - Process for the recovery of sulfur in a chemical pulping process, in particular a sulfate process, as well as the use of recycled products obtained by the process for producing tall oil and magnesium sulfate using the recovered sulfur for the process - Google Patents

Process for the recovery of sulfur in a chemical pulping process, in particular a sulfate process, as well as the use of recycled products obtained by the process for producing tall oil and magnesium sulfate using the recovered sulfur for the process

Info

Publication number
SE0402705L
SE0402705L SE0402705A SE0402705A SE0402705L SE 0402705 L SE0402705 L SE 0402705L SE 0402705 A SE0402705 A SE 0402705A SE 0402705 A SE0402705 A SE 0402705A SE 0402705 L SE0402705 L SE 0402705L
Authority
SE
Sweden
Prior art keywords
sulfur
sulfate
recovery
well
products obtained
Prior art date
Application number
SE0402705A
Other languages
Swedish (sv)
Other versions
SE530461C2 (en
SE0402705D0 (en
Inventor
Aarto Paren
Juhani Nyman
Original Assignee
Kemira Oyj
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8565921&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE0402705(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kemira Oyj filed Critical Kemira Oyj
Publication of SE0402705L publication Critical patent/SE0402705L/en
Publication of SE0402705D0 publication Critical patent/SE0402705D0/en
Publication of SE530461C2 publication Critical patent/SE530461C2/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
    • 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
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
    • C11B13/02—Recovery of fats, fatty oils or fatty acids from waste materials from soap stock
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

The invention relates to a method for recycling sulphur in a preparation process for a chemical pulp, such as a sulphate process. The method is characterised in that the sulphur recovered from the process cycle is converted into bisulphate by means of an oxidant, which bisulphate is then reaused as a recycled acid in various process steps.
SE0402705A 2003-04-03 2004-11-08 Process for the recovery of sulfur in a chemical pulping process, in particular a sulfate process, as well as the use of recycled products obtained by the process for producing tall oil and magnesium sulfate using the recovered sulfur for the process SE530461C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20030510A FI116074B3 (en) 2003-04-03 2003-04-03 Sulfur recycling in the sulphate pulp process
PCT/FI2004/000209 WO2004088033A2 (en) 2003-04-03 2004-04-02 Recycling of sulphur in a pulp production process

Publications (3)

Publication Number Publication Date
SE0402705L true SE0402705L (en) 2004-11-08
SE0402705D0 SE0402705D0 (en) 2004-11-08
SE530461C2 SE530461C2 (en) 2008-06-10

Family

ID=8565921

Family Applications (2)

Application Number Title Priority Date Filing Date
SE0402705A SE530461C2 (en) 2003-04-03 2004-11-08 Process for the recovery of sulfur in a chemical pulping process, in particular a sulfate process, as well as the use of recycled products obtained by the process for producing tall oil and magnesium sulfate using the recovered sulfur for the process
SE0402707A SE530462C2 (en) 2003-04-03 2004-11-08 Process for the recovery of sulfur in a chemical pulp process comprising the oxidation of bisulfite to bisulfate, which is then used for the digestion of tall oil or as a raw material in the production of magnesium sulfate

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE0402707A SE530462C2 (en) 2003-04-03 2004-11-08 Process for the recovery of sulfur in a chemical pulp process comprising the oxidation of bisulfite to bisulfate, which is then used for the digestion of tall oil or as a raw material in the production of magnesium sulfate

Country Status (3)

Country Link
FI (1) FI116074B3 (en)
SE (2) SE530461C2 (en)
WO (2) WO2004088032A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI126649B (en) * 2010-06-07 2017-03-31 Aalto Univ Found New process for the preparation of microcellulose
EP2527532A1 (en) * 2011-05-27 2012-11-28 "Efa Gryt" Ewa Gryt Method of processing of stalks of fibre crops

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE319962B (en) * 1968-05-10 1970-01-26 Mo Och Domsjoe Ab
US3733395A (en) * 1971-04-07 1973-05-15 Hooker Chemical Corp Process for producing chlorine dioxide,chlorine and a neutral sulfate salt in the sulfate or kraft process of preparing wood pulp
DE2516342A1 (en) * 1975-04-15 1976-10-28 Bayer Ag Catalytic oxidn. of aq. (bi)sulphite soln. to (bi)sulphate - using ferric (and ferrous) ions as catalyst, avoiding toxicity problems
SE411772B (en) * 1978-04-07 1980-02-04 Sca Development Ab SET TO REDUCE EMISSIONS TO RECIPIENT AND ATMOSPHERES IN CONNECTION OF CELLULOSIC MATERIAL
DK130587A (en) * 1987-03-13 1988-09-14 Dansk Biolog Produktion Amba PROCEDURE FOR SULFUR GAS desulfurization
SE9202419D0 (en) * 1992-08-24 1992-08-24 Eka Nobel Ab REDUCTION OF CHLORIDE IN PULPING CHEMICAL RECOVERY SYSTEMS
FI95723C (en) * 1992-11-10 1996-04-11 Lt Dynamics Oy Method of acidifying soap with a large overdose of NaHSO3 solution

Also Published As

Publication number Publication date
FI20030510A (en) 2004-10-04
SE530461C2 (en) 2008-06-10
SE0402707L (en) 2004-11-08
FI116074B (en) 2005-09-15
SE0402707D0 (en) 2004-11-08
FI116074B3 (en) 2014-06-23
WO2004088033A3 (en) 2005-01-06
SE530462C2 (en) 2008-06-10
WO2004088032A2 (en) 2004-10-14
WO2004088032A3 (en) 2004-11-25
WO2004088033A2 (en) 2004-10-14
SE0402705D0 (en) 2004-11-08
FI20030510A0 (en) 2003-04-03

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Legal Events

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