[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

ES8602173A1 - Process for bleaching paper pulps with hydrogen peroxide. - Google Patents

Process for bleaching paper pulps with hydrogen peroxide.

Info

Publication number
ES8602173A1
ES8602173A1 ES539151A ES539151A ES8602173A1 ES 8602173 A1 ES8602173 A1 ES 8602173A1 ES 539151 A ES539151 A ES 539151A ES 539151 A ES539151 A ES 539151A ES 8602173 A1 ES8602173 A1 ES 8602173A1
Authority
ES
Spain
Prior art keywords
hydrogen peroxide
weight
alkaline
concentration
paper pulps
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
ES539151A
Other languages
Spanish (es)
Other versions
ES539151A0 (en
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.)
Arkema France SA
Original Assignee
Atochem SA
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 Atochem SA filed Critical Atochem SA
Publication of ES8602173A1 publication Critical patent/ES8602173A1/en
Publication of ES539151A0 publication Critical patent/ES539151A0/en
Granted 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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Abstract

1. Process for bleaching chemical paper pulps using hydrogen peroxide, characterized in that the operation is carried out in a single stage at a pH of 11 to 11.5, at a temperature of 70 degrees C to 100 degrees C, with the aid of a solution containing, in addition to hydrogen peroxide, at least one alkaline agent chosen from sodium hydroxide and sodium carbonate, at least one alkali metal silicate at a concentration of at least 0.3% by weight, expressed as SiO2 , at least one magnesium salt and at least one calcium salt in such quantity that the weight concentration of each of these alkaline-earth elements is between 0.05% and 1%, these elements being maintained in the dissolved state with the aid of at least one complexing agent for alkaline-earth ions in such quantity that the total concentration of complexant does not exceed 10% by weight.
ES539151A 1983-12-29 1984-12-28 BLEACHING PROCEDURE FOR CHEMICAL PAPER MACHINES BY HYDROGEN PEROXIDE Granted ES539151A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8320990A FR2557605B1 (en) 1983-12-29 1983-12-29 PROCESS FOR BLEACHING PAPER PULP BY HYDROGEN PEROXIDE

Publications (2)

Publication Number Publication Date
ES8602173A1 true ES8602173A1 (en) 1985-11-16
ES539151A0 ES539151A0 (en) 1985-11-16

Family

ID=9295687

Family Applications (1)

Application Number Title Priority Date Filing Date
ES539151A Granted ES539151A0 (en) 1983-12-29 1984-12-28 BLEACHING PROCEDURE FOR CHEMICAL PAPER MACHINES BY HYDROGEN PEROXIDE

Country Status (9)

Country Link
EP (1) EP0148712B1 (en)
JP (1) JPS60181391A (en)
AT (1) ATE29537T1 (en)
AU (1) AU567787B2 (en)
CA (1) CA1262805A (en)
DE (2) DE3466024D1 (en)
ES (1) ES539151A0 (en)
FI (1) FI76135C (en)
FR (1) FR2557605B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544398A1 (en) * 1985-12-16 1987-06-19 Sueddeutsche Kalkstickstoff METHOD FOR THE BLEACHING AND DELIGNIFICATION OF CELLULAR-BASED PRODUCTS
JPH0642046B2 (en) * 1987-01-29 1994-06-01 新王子製紙株式会社 Support for photographic paper
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
DE69420306T2 (en) * 1993-04-20 2000-04-20 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
IT1290070B1 (en) * 1997-03-13 1998-10-19 3V Sigma Spa COMPOSITIONS FOR THE PAPER WHITENING
GB2327894A (en) * 1997-08-01 1999-02-10 Nippon Paint Co Ltd Method of multi-layer coating formation
AU7493898A (en) * 1998-05-15 1999-12-06 National Silicates Partnership. Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps
US6699358B1 (en) 1998-05-15 2004-03-02 National Silicates Partnership Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution
US7001484B2 (en) 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US8845860B2 (en) 2010-09-16 2014-09-30 Georgia-Pacific Consumer Products Lp High brightness pulps from lignin rich waste papers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437813A (en) * 1890-10-07 Envelope-machine
NL97796C (en) * 1958-05-29
US3472813A (en) * 1967-01-18 1969-10-14 Argus Chem Resistance of acrylonitrile butadiene styrene polymers to discoloration
FR2038056A1 (en) * 1969-03-07 1971-01-08 Air Liquide Stable, clear bleaching bath for paper - pulp
SE7510015L (en) * 1975-09-09 1977-03-10 Dev Ab Sca WAY TO TREAT LIGNOCELLULOSIS-CONTAINING MATERIAL
JPS583074B2 (en) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 Palpuno Kasan Kabutsu Hiyou Hakuhou
JPS5927436B2 (en) * 1979-05-29 1984-07-05 王子製紙株式会社 Peroxide bleaching method for wood pulp
FR2476684A1 (en) * 1980-02-21 1981-08-28 Interox PROCESS FOR INHIBITING CORROSION OF TITANIUM APPLIANCES

Also Published As

Publication number Publication date
DE3466024D1 (en) 1987-10-15
ES539151A0 (en) 1985-11-16
EP0148712B1 (en) 1987-09-09
FR2557605B1 (en) 1987-12-11
FI76135C (en) 1992-04-15
FI76135B (en) 1988-05-31
FR2557605A1 (en) 1985-07-05
JPS6261716B2 (en) 1987-12-23
JPS60181391A (en) 1985-09-17
ATE29537T1 (en) 1987-09-15
AU567787B2 (en) 1987-12-03
AU3724384A (en) 1985-07-04
EP0148712A1 (en) 1985-07-17
FI845121L (en) 1985-06-30
FI845121A0 (en) 1984-12-27
DE148712T1 (en) 1986-01-02
CA1262805A (en) 1989-11-14

Similar Documents

Publication Publication Date Title
AU561035B2 (en) Detergents containing a peroxide compound
NZ210398A (en) Detergent bleach composition containing a peroxide compound and a manganese compound
ES8602173A1 (en) Process for bleaching paper pulps with hydrogen peroxide.
SE9302213L (en) Preparation of polysulfide by electrolysis of white liquor containing sulfide
GR76811B (en)
PT86400A (en) Process for preparing aqueous solutions containing a mixture of hysozyme hydrochloride and dipotassium glycyrrhizate
GB1419184A (en) Bleaching composition
ATE80677T1 (en) BLEACH SUPPLEMENT.
MY104034A (en) Composition suitable for the stabilization of hydrogen peroxide.
ES8306677A1 (en) Stabilized sodium sulfate-hydrogen peroxide-sodium chloride adduct and alkaline bleach composition containing same
ES8303909A1 (en) Machine dishwashing composition.
ES8603607A1 (en) Hypochlorite treatment of chemical paper pulps.
ES466895A1 (en) Processes for preparing sodium percarbonate
ES2005227A6 (en) Method and composition for bleaching laundry
GB1425901A (en) Pulping process
ZA935690B (en) Alkall containing silica solution
FR2243159A1 (en) Hypochlorite removal from aq. alkaline streams - by decomposition with hydrogen peroxide, opt. added in stoichiometric excess
SE7904430L (en) MASS BLEACHING
JPS57128765A (en) Reducing agent composition
NO964888L (en) Detergent powder mixture comprising stabilized percarbonate
JPS5444612A (en) Synthesis of bishydroxyethylsulfone
ES305710A3 (en) A procedure for the bleaching, especially of organic substances, in aqueous solutions of acids of clorites. (Machine-translation by Google Translate, not legally binding)
ES8206386A1 (en) Making calcium hypochlorite from impure lime
TH2669A (en) Bleaching ingredient in the bleaching process
TH2669EX (en) Bleaching ingredient in the bleaching process

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970303