GB1319417A - Treatment of waste liquor from a soda based pulping process - Google Patents

Treatment of waste liquor from a soda based pulping process

Info

Publication number
GB1319417A
GB1319417A GB1482371A GB1482371A GB1319417A GB 1319417 A GB1319417 A GB 1319417A GB 1482371 A GB1482371 A GB 1482371A GB 1482371 A GB1482371 A GB 1482371A GB 1319417 A GB1319417 A GB 1319417A
Authority
GB
United Kingdom
Prior art keywords
solution
furnace
sulphite
alumina
waste liquor
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.)
Expired
Application number
GB1482371A
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.)
Sonoco Products Co
Original Assignee
Sonoco Products Co
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 Sonoco Products Co filed Critical Sonoco Products Co
Publication of GB1319417A publication Critical patent/GB1319417A/en
Expired 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
    • D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
    • D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

1319417 Sodium sulphite recovery SONOCO PRODUCTS CO 13 May 1971 [14 May 1970] 14823/71 Heading C1A Waste liquor from a soda-based pulping operation, preferably after concentration in evaporator (1) to a solids content of from 25-70% by weight, is mixed in (3) with alumina or its hydrate and furnace ash comprising sodium aluminate derived via pulverizer (10) to give an Na 2 O : Al 2 O 3 molar ratio of 1 : 1 to 2 : 1 and to form a solid particulate mass and then the latter is combusted in furnace (7) at 1000‹ F. or above (e.g. 1500-2000‹ F.) but below the fusion point of sodium aluminate. Following the furnace operation, a portion of the furnace ash is recycled via (10) to mixer (3) and a further portion may be dissolved in water in (12) and the resulting solution mixed with bisulphite solution in reactor (17) whereby alumina or its hydrate is precipitated and normal sulphite remains in solution. After filtration in (20), the sulphite solution may be re-used in the liquor make-up for the pulping operation and the hydrated alumina may be recycled to the mixer (3). Some of the sulphite solution may also be contacted in absorber (22) with SO 2 derived from the furnace flue gas in order to produce the bisulphite solution used in reactor (17).
GB1482371A 1970-05-14 1971-05-13 Treatment of waste liquor from a soda based pulping process Expired GB1319417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3718470A 1970-05-14 1970-05-14

Publications (1)

Publication Number Publication Date
GB1319417A true GB1319417A (en) 1973-06-06

Family

ID=21892911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1482371A Expired GB1319417A (en) 1970-05-14 1971-05-13 Treatment of waste liquor from a soda based pulping process

Country Status (7)

Country Link
JP (1) JPS506561B1 (en)
CA (1) CA958159A (en)
DK (1) DK142000B (en)
FI (1) FI55064C (en)
GB (1) GB1319417A (en)
NO (1) NO132938C (en)
SE (1) SE366565B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3578128B2 (en) * 2001-09-17 2004-10-20 新菱冷熱工業株式会社 Method and apparatus for incinerating shochu waste liquid or soy sauce waste liquid

Also Published As

Publication number Publication date
FI55064C (en) 1979-05-10
NO132938C (en) 1976-02-04
FI55064B (en) 1979-01-31
NO132938B (en) 1975-10-27
SE366565B (en) 1974-04-29
DK142000C (en) 1980-12-15
DE2123201B2 (en) 1976-04-29
JPS506561B1 (en) 1975-03-15
DE2123201A1 (en) 1971-12-02
DK142000B (en) 1980-08-04
CA958159A (en) 1974-11-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee