RU95110663A - Perfected method for bleaching high-consistency cellulose pulp - Google Patents

Perfected method for bleaching high-consistency cellulose pulp

Info

Publication number
RU95110663A
RU95110663A RU95110663/12A RU95110663A RU95110663A RU 95110663 A RU95110663 A RU 95110663A RU 95110663/12 A RU95110663/12 A RU 95110663/12A RU 95110663 A RU95110663 A RU 95110663A RU 95110663 A RU95110663 A RU 95110663A
Authority
RU
Russia
Prior art keywords
cellulose pulp
pulp
whiteness
bleached
degree
Prior art date
Application number
RU95110663/12A
Other languages
Russian (ru)
Other versions
RU2115780C1 (en
Inventor
П. Гандек Томас
Us]
Original Assignee
Юнион Кемп Пейтент Холдинг
Юнион Кемп Пейтент Холдинг, Инк.
Инк. (US)
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 Юнион Кемп Пейтент Холдинг, Юнион Кемп Пейтент Холдинг, Инк., Инк. (US) filed Critical Юнион Кемп Пейтент Холдинг
Publication of RU95110663A publication Critical patent/RU95110663A/en
Application granted granted Critical
Publication of RU2115780C1 publication Critical patent/RU2115780C1/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/007—Modification of pulp properties by mechanical or physical means

Abstract

FIELD: cellulose pulp production. SUBSTANCE: proposed method comprises step of loosening high-consistency pulp having first whiteness degree GE to obtain loosened material with specific surface area of at least about 90 sq. m/kg, Followed by contacting loosened material with gaseous bleaching agent to produce bleached pulp possessing second, higher whiteness degree GE. Proposed invention is also directed to bleached lignin-cellulose pulp prepared by proposed method. EFFECT: greater selectivity of process.

Claims (1)

Предлагаемое изобретение относится к способу отбелки высококонсистентной лигноцеллюлозной массы, обладающему повышенной избирательностью, от первой степени белизны GE до второй, более высокой степени белизны GE, включающему ступени рыхления высококонсистентной массы с первой степенью белизны GE до получения площади удельной поверхности по меньшей мере около 90 кв. м/кг, и контакта разрыхленой массы о газообразным отбеливателем с образованием беленой массы, обладающей второй, более высокой, степенью белизны GE. Предлагаемое изобретение относится также к беленой лигноцеллюлозной массе, приготовленной предлагаемым способом.The present invention relates to a method for bleaching a high-consistency lignocellulosic pulp having enhanced selectivity from a first degree of GE whiteness to a second, higher degree of GE whiteness, including steps of loosening a highly consistent pulp with a first degree of GE whiteness to obtain a specific surface area of at least about 90 square meters. m / kg, and the contact of the loose mass on gaseous bleach to form a bleached mass having a second, higher degree of whiteness of GE. The present invention also relates to bleached lignocellulosic mass prepared by the proposed method.
RU95110663A 1992-10-01 1993-09-28 Method for bleaching of high-consistency lignocellulose mass and bleached high-consistency lignocellulose mass produced by this method RU2115780C1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US95500192A 1992-10-01 1992-10-01
US07/955001 1992-10-01
US2754493A 1993-03-05 1993-03-05
US08/027544 1993-03-05

Publications (2)

Publication Number Publication Date
RU95110663A true RU95110663A (en) 1997-04-10
RU2115780C1 RU2115780C1 (en) 1998-07-20

Family

ID=26702594

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95110663A RU2115780C1 (en) 1992-10-01 1993-09-28 Method for bleaching of high-consistency lignocellulose mass and bleached high-consistency lignocellulose mass produced by this method

Country Status (14)

Country Link
EP (1) EP0663030A4 (en)
JP (1) JPH08502327A (en)
KR (1) KR950703683A (en)
CN (1) CN1104274A (en)
AU (1) AU671159B2 (en)
BR (1) BR9307135A (en)
CA (1) CA2144433A1 (en)
FI (1) FI951533A (en)
ID (1) ID925B (en)
MY (1) MY110586A (en)
NO (1) NO951190L (en)
NZ (1) NZ256783A (en)
RU (1) RU2115780C1 (en)
WO (1) WO1994008087A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0770157A4 (en) * 1994-07-14 1998-01-07 Union Camp Patent Holding Improved bleaching of high consistency lignocellulosic pulp
US5667974A (en) * 1995-06-07 1997-09-16 Abbott Laboratories Method for detecting nucleic acid sequences using competitive amplification
CN100345955C (en) * 2006-02-25 2007-10-31 武汉市神虫液蜂蜜酒业有限公司 Method for brewing pure honeymead
BR112019004638B1 (en) * 2016-09-14 2022-11-22 Fpinnovations METHOD FOR TRANSFORMING A PULP INTO A PRE-DISPERSED PULP FIBROUS MATERIAL, PRE-DISPERSED FIBROUS MATERIAL, AND, REFINER SYSTEM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA902859A (en) * 1969-11-26 1972-06-20 Pulp And Paper Research Institute Of Canada Chemical reaction between a solid and a gas
NO131996C (en) * 1973-10-04 1975-09-03 Papirind Forskningsinst
NO142091C (en) * 1977-10-17 1980-06-25 Myrens Verksted As PROCEDURE FOR OZONE TREATMENT OF REFINO MECHANICAL AND THERMOMECHANICAL MASS.
SE419603B (en) * 1979-11-27 1981-08-17 Kamyr Ab APPLICATION FOR MIXING TREATMENT AGENTS IN SUSPENSIONS
ATE122421T1 (en) * 1990-05-17 1995-05-15 Union Camp Patent Holding MORE ENVIRONMENTALLY FRIENDLY PROCESS FOR BLEACHING LIGNOCELLULOSIC MATERIALS.
EP0492040A1 (en) * 1990-12-21 1992-07-01 Kamyr, Inc. Tumbling ozone reactor for paper pulp

Also Published As

Publication number Publication date
BR9307135A (en) 1999-07-27
KR950703683A (en) 1995-09-20
RU2115780C1 (en) 1998-07-20
WO1994008087A1 (en) 1994-04-14
ID925B (en) 1996-09-16
CN1104274A (en) 1995-06-28
CA2144433A1 (en) 1994-04-14
NO951190D0 (en) 1995-03-28
EP0663030A4 (en) 1995-12-06
EP0663030A1 (en) 1995-07-19
NZ256783A (en) 1996-08-27
AU5166593A (en) 1994-04-26
FI951533A0 (en) 1995-03-31
FI951533A (en) 1995-03-31
JPH08502327A (en) 1996-03-12
MY110586A (en) 1998-08-29
NO951190L (en) 1995-03-28
AU671159B2 (en) 1996-08-15

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