GB1489349A - Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors - Google Patents

Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors

Info

Publication number
GB1489349A
GB1489349A GB44140/74A GB4414074A GB1489349A GB 1489349 A GB1489349 A GB 1489349A GB 44140/74 A GB44140/74 A GB 44140/74A GB 4414074 A GB4414074 A GB 4414074A GB 1489349 A GB1489349 A GB 1489349A
Authority
GB
United Kingdom
Prior art keywords
smelt
liquor
spent liquor
dissolving tank
pulp
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
GB44140/74A
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.)
OI Glass Inc
Original Assignee
Owens Illinois 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 Owens Illinois Inc filed Critical Owens Illinois Inc
Publication of GB1489349A publication Critical patent/GB1489349A/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
    • D21C11/12—Combustion of pulp liquors
    • D21C11/122—Treatment, e.g. dissolution, of the smelt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00245—Avoiding undesirable reactions or side-effects
    • B01J2219/00259—Preventing runaway of the chemical reaction
    • B01J2219/00263—Preventing explosion of the chemical mixture

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

1489349 Pulp manufacture OWENS-ILLINOIS INC 11 Oct 1974 [15 Oct 1973] 44140/74 Heading D2W In a process for the manufacture of pulp which comprises cooking lignocellulosic material with an aqueous sodium-based cooking liquor at elevated temperature and pressure to form the pulp, and separating the spent liquor by filtration and washing, concentrating the spent liquor, and igniting the concentrated spent liquor in a furnace to form a smelt which is dissolved in water to form a liquor from which chemicals may be recovered, an alkali metal compound (other than sodium carbonate), or a mixture thereof, is added to the cooking liquor, the spent liquor, the concentrated spent liquor, or the smelt, in an amount sufficient to lower the melting point of the smelt to improve smelt fluidity and thereby reduce dissolving tank explosions. Specified alkali metal compounds are lithium carbonate, lithium hydroxide, potassium carbonate, potassium hydroxide, and alkali metal borates e.g. potassium borate, sodium borate, lithium borate.
GB44140/74A 1973-10-15 1974-10-11 Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors Expired GB1489349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US406498A US3873413A (en) 1973-10-15 1973-10-15 Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors

Publications (1)

Publication Number Publication Date
GB1489349A true GB1489349A (en) 1977-10-19

Family

ID=23608241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44140/74A Expired GB1489349A (en) 1973-10-15 1974-10-11 Method of improving smelt properties and reducing dissolving tank explosions during pulping of wood with sodium based liquors

Country Status (10)

Country Link
US (1) US3873413A (en)
JP (1) JPS524642B2 (en)
BR (1) BR7408536D0 (en)
CA (1) CA1058357A (en)
DE (1) DE2448891C3 (en)
ES (1) ES430977A1 (en)
FR (1) FR2247576B1 (en)
GB (1) GB1489349A (en)
SE (1) SE412424B (en)
ZA (1) ZA746077B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106978A (en) * 1977-01-31 1978-08-15 Combustion Engineering, Inc. Method of preventing explosions using a smelt water explosion inhibitor
US6348128B1 (en) * 1998-06-01 2002-02-19 U.S. Borax Inc. Method of increasing the causticizing efficiency of alkaline pulping liquor by borate addition
US6294048B1 (en) * 1998-06-01 2001-09-25 U.S. Borax Inc. Method for regenerating sodium hydroxide by partial autocausticizing sodium carbonate containing smelt by reaction with a borate
US20050037226A1 (en) * 2003-08-12 2005-02-17 Peascoe Meisner Roberta A. Alkali resistant refractories
US7735435B2 (en) * 2006-05-24 2010-06-15 Diamond Power International, Inc. Apparatus for cleaning a smelt spout of a combustion device
US7854847B2 (en) * 2006-11-09 2010-12-21 Rayonier Trs Holdings Inc. Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447895A (en) * 1966-12-01 1969-06-03 Combustion Eng Method of preventing smelt-water explosions
US3615175A (en) * 1969-03-24 1971-10-26 Combustion Eng Preventing physical explosion due to the interaction of liquid water and molten chemical compounds
US3650889A (en) * 1970-08-03 1972-03-21 Combustion Eng Pollution controlled polysulfide recovery process

Also Published As

Publication number Publication date
SE7412884L (en) 1975-04-16
FR2247576A1 (en) 1975-05-09
BR7408536D0 (en) 1975-08-05
ZA746077B (en) 1976-04-28
JPS5064502A (en) 1975-05-31
ES430977A1 (en) 1976-10-16
CA1058357A (en) 1979-07-17
DE2448891C3 (en) 1978-04-27
FR2247576B1 (en) 1977-11-10
SE412424B (en) 1980-03-03
DE2448891A1 (en) 1975-04-17
US3873413A (en) 1975-03-25
DE2448891B2 (en) 1977-09-01
JPS524642B2 (en) 1977-02-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee