BE699505A - - Google Patents

Info

Publication number
BE699505A
BE699505A BE699505DA BE699505A BE 699505 A BE699505 A BE 699505A BE 699505D A BE699505D A BE 699505DA BE 699505 A BE699505 A BE 699505A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE699505A publication Critical patent/BE699505A/xx

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
BE699505D 1965-06-28 1967-06-05 BE699505A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46769765A 1965-06-28 1965-06-28

Publications (1)

Publication Number Publication Date
BE699505A true BE699505A (enrdf_load_stackoverflow) 1967-11-16

Family

ID=37084838

Family Applications (1)

Application Number Title Priority Date Filing Date
BE699505D BE699505A (enrdf_load_stackoverflow) 1965-06-28 1967-06-05

Country Status (7)

Country Link
US (1) US3433702A (enrdf_load_stackoverflow)
BE (1) BE699505A (enrdf_load_stackoverflow)
CA (1) CA932908A (enrdf_load_stackoverflow)
DE (1) DE1594861B2 (enrdf_load_stackoverflow)
FR (1) FR1484998A (enrdf_load_stackoverflow)
GB (1) GB1145339A (enrdf_load_stackoverflow)
NO (1) NO126747B (enrdf_load_stackoverflow)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100709A (en) * 1965-06-25 1968-01-24 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material
USRE28777E (en) * 1969-02-06 1976-04-20 Ethyl Corporation Refining of vegetable matter and delignification of the refined matter with chlorine dioxide
US3884752A (en) * 1973-09-17 1975-05-20 Int Paper Co Single vessel wood pulp bleaching with chlorine dioxide followed by sodium hypochlorite or alkaline extraction
US3907632A (en) * 1973-10-23 1975-09-23 Ppg Industries Inc Bleaching cellulosic pulps with gaseous chlorine at a pH of 7 to 10 in a multistage bleaching process
US4081317A (en) * 1973-12-18 1978-03-28 Hooker Chemicals & Plastics Corporation Process for the reduction of effluent color from a cellulosic pulp bleaching sequence
SE391750B (sv) * 1974-03-21 1977-02-28 Kamyr Ab Sett att i ett kerl kontinuerligt behandla cellulosamassa med klor
US4039374A (en) * 1975-08-29 1977-08-02 Union Camp Corporation Bleaching of cellulosic pulp fibers with chlorine dioxide in the presence of a vanadium compound
US4096029A (en) * 1976-04-26 1978-06-20 The Dow Chemical Company Cellulosic pulp delignification using an acidic bromine-chlorine mixture
US4325783A (en) * 1978-03-30 1982-04-20 Erco Industries Limited Bleaching procedure using chlorine dioxide and chlorine solutions
US4259149A (en) * 1978-05-03 1981-03-31 Hooker Chemicals & Plastics Corp. Method of reducing waste stream pollutants by the control and separation of waste contaminants from a multi-stage cellulosic bleaching sequence
US4299653A (en) * 1979-04-16 1981-11-10 Erco Industries Limited Method of bleaching pulp with an aqueous solution of chlorine dioxide and chlorine followed by a chlorine solution
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
AU6537690A (en) * 1989-10-19 1991-05-16 North Carolina State University High efficiency chlorine dioxide pulp bleaching process
EP0496827A1 (en) * 1989-10-19 1992-08-05 North Carolina State University Chlorine dioxide pulp bleaching process using sequential chlorine addition
US5030324A (en) * 1990-01-29 1991-07-09 Champion International Corporation Sequential bleaching procedure using chlorine and chlorine dioxide in a first chlorination stage of a multistage bleaching process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513788A (en) * 1947-01-31 1950-07-04 Brown Co Bleaching of sulfate wood pulp
BE518419A (enrdf_load_stackoverflow) * 1952-03-26
US2903326A (en) * 1956-10-17 1959-09-08 Pennsalt Chemicals Corp Improved process for bleaching cellulose pulp using chlorate
US3020197A (en) * 1960-08-05 1962-02-06 Allied Chem Method for production of high brightness high strength wood pulps

Also Published As

Publication number Publication date
DE1594861B2 (de) 1973-10-04
US3433702A (en) 1969-03-18
NO126747B (enrdf_load_stackoverflow) 1973-03-19
CA932908A (en) 1973-09-04
GB1145339A (en) 1969-03-12
FR1484998A (fr) 1967-06-16
DE1594861C3 (enrdf_load_stackoverflow) 1974-05-09
DE1594861A1 (de) 1972-05-25

Similar Documents

Publication Publication Date Title
JPS4513968Y1 (enrdf_load_stackoverflow)
JPS4937302B1 (enrdf_load_stackoverflow)
JPS4819382Y1 (enrdf_load_stackoverflow)
JPS4669Y1 (enrdf_load_stackoverflow)
JPS4413153Y1 (enrdf_load_stackoverflow)
JPS4325942Y1 (enrdf_load_stackoverflow)
JPS431587Y1 (enrdf_load_stackoverflow)
BE699505A (enrdf_load_stackoverflow)
SE320845B (enrdf_load_stackoverflow)
NL6610822A (enrdf_load_stackoverflow)
NL6511712A (enrdf_load_stackoverflow)
BE687232A (enrdf_load_stackoverflow)
BE677105A (enrdf_load_stackoverflow)
BE675965A (enrdf_load_stackoverflow)
BE675960A (enrdf_load_stackoverflow)
BE675891A (enrdf_load_stackoverflow)
BE675859A (enrdf_load_stackoverflow)
BE675855A (enrdf_load_stackoverflow)
BE675558A (enrdf_load_stackoverflow)
BE675546A (enrdf_load_stackoverflow)
BE675544A (enrdf_load_stackoverflow)
BE675508A (enrdf_load_stackoverflow)
BE675459A (enrdf_load_stackoverflow)
BE675451A (enrdf_load_stackoverflow)
BE675433A (enrdf_load_stackoverflow)