ES2004855A4 - Procedimiento para la preparacion de pastas. - Google Patents

Procedimiento para la preparacion de pastas.

Info

Publication number
ES2004855A4
ES2004855A4 ES88420160T ES88420160T ES2004855A4 ES 2004855 A4 ES2004855 A4 ES 2004855A4 ES 88420160 T ES88420160 T ES 88420160T ES 88420160 T ES88420160 T ES 88420160T ES 2004855 A4 ES2004855 A4 ES 2004855A4
Authority
ES
Spain
Prior art keywords
procedure
pasta
preparation
alcaline
blanching
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.)
Granted
Application number
ES88420160T
Other languages
English (en)
Other versions
ES2004855B3 (es
Inventor
Michel Devic
Robert Angelier
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 ES2004855A4 publication Critical patent/ES2004855A4/es
Application granted granted Critical
Publication of ES2004855B3 publication Critical patent/ES2004855B3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes

Landscapes

  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Steroid Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Catalysts (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

PROCEDIMIENTO PARA FABRICACION DE PASTAS CTMP, EN EL QUE UN DESFIBRAJE MECANICO DEL MATERIAL LIGNOCELULOSICO ES ADJUNTO A UNA COCHURA DE DICHO MATERIAL A TEMPERATURA IGUAL O SUPERIOR A 100 (GRADOS) C, BAJO PRESION DE VAPOR DE AGUA SATURADA CON AYUDA DE NA2SO3 O NAHSO3 O SO2 Y NAOH, Y DE UN AGENTE REDUCTOR MAS ELECTRONEGATIVO QUE EL ION SULFITO, REALIZACION CONJUNTA Y EN UN MEDIO DE PH INICIALMENTE COMPRENDIDO ENTRE 7 Y 12,5, Y BLANQUEO DE LA PARTE FABRICADA CON AYUDA DE H2O2 EN MEDIO ACUOSO ALCALINO.
ES88420160T 1987-05-25 1988-05-17 Procedimiento para la preparacion de pastas quimicotermomecanicas. Expired - Lifetime ES2004855B3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8707552A FR2615874B1 (fr) 1987-05-25 1987-05-25 Procede de preparation de pates chimicothermomecaniques

Publications (2)

Publication Number Publication Date
ES2004855A4 true ES2004855A4 (es) 1989-02-16
ES2004855B3 ES2004855B3 (es) 1991-08-16

Family

ID=9351559

Family Applications (1)

Application Number Title Priority Date Filing Date
ES88420160T Expired - Lifetime ES2004855B3 (es) 1987-05-25 1988-05-17 Procedimiento para la preparacion de pastas quimicotermomecanicas.

Country Status (12)

Country Link
EP (1) EP0293309B1 (es)
JP (1) JPS63303189A (es)
AT (1) ATE61639T1 (es)
AU (1) AU609481B2 (es)
CA (1) CA1310452C (es)
DE (2) DE293309T1 (es)
ES (1) ES2004855B3 (es)
FI (1) FI93746C (es)
FR (1) FR2615874B1 (es)
NO (1) NO171801C (es)
NZ (1) NZ224749A (es)
PT (1) PT87569B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634233B1 (fr) * 1988-07-12 1995-04-14 Atochem Procede de fabrication de pates chimicothermomecaniques blanchies
FR2659363B1 (fr) * 1990-03-07 1996-04-19 Atochem Procede de preparation de pates a haut rendement blanchies.
SE468644B (sv) * 1991-05-24 1993-02-22 Sunds Defibrator Ind Ab Framstaellning av kemitermomekanisk massa samt impregneringsloesning innehaallande borhydrid och sulfit
DE10109502A1 (de) * 2001-02-28 2002-09-12 Rhodia Acetow Gmbh Verfahren zum Abtrennen von Hemicellulosen aus hemicellulosehaltiger Biomasse sowie die mit dem Verfahren erhältliche Biomasse und Hemicellulose
RU2649301C2 (ru) * 2012-12-12 2018-03-30 Басф Се Применение дитионита натрия в процессе варки целлюлозы
EP2924166A1 (de) 2014-03-25 2015-09-30 Basf Se Verfahren zur Herstellung von gebleichtem Holzfaserstoff
CN111549552B (zh) * 2020-05-25 2022-06-14 广西大学 一种废水碱回收循环利用的高得率化学机械浆制浆方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1150451A (fr) * 1956-05-04 1958-01-14 Saint Gobain Perfectionnement aux procédés de fabrication des pâtes cellulosiques mi-chimiques
US3284283A (en) * 1964-02-17 1966-11-08 Fmc Corp Production of wood pulps including treatment of cellulosic fibers with bisulfite ion followed by alkali metal borohydride
CH510168A (it) * 1969-07-30 1971-07-15 Vita Mayer & C Gia Processo per la produzione di paste ad alta resa ed alto grado di bianco per uso cartario
JPS5210300B2 (es) * 1973-06-19 1977-03-23
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
CA1212505A (en) * 1984-07-17 1986-10-14 Rudy Vit Method, process and apparatus for converting wood, wood residue and or biomass into pulp
FR2634233B1 (fr) * 1988-07-12 1995-04-14 Atochem Procede de fabrication de pates chimicothermomecaniques blanchies

Also Published As

Publication number Publication date
NO882263D0 (no) 1988-05-24
AU609481B2 (en) 1991-05-02
FR2615874A1 (fr) 1988-12-02
DE293309T1 (de) 1989-05-11
FI882448L (fi) 1988-11-26
ATE61639T1 (de) 1991-03-15
FI93746C (fi) 1995-05-26
AU1661488A (en) 1988-12-01
FR2615874B1 (fr) 1992-02-21
CA1310452C (fr) 1992-11-24
EP0293309B1 (fr) 1991-03-13
JPS63303189A (ja) 1988-12-09
EP0293309A1 (fr) 1988-11-30
NO171801B (no) 1993-01-25
FI882448A0 (fi) 1988-05-24
PT87569A (pt) 1989-05-31
PT87569B (pt) 1992-09-30
FI93746B (fi) 1995-02-15
NO171801C (no) 1993-05-05
JPH0217675B2 (es) 1990-04-23
NZ224749A (en) 1989-08-29
NO882263L (no) 1988-11-28
ES2004855B3 (es) 1991-08-16
DE3861982D1 (de) 1991-04-18

Similar Documents

Publication Publication Date Title
ES500916A0 (es) Un procedimiento para la preparacion y estabilizacion de una composicion blanqueante acuosa que contiene peroxido de hi-drogeno.
ES531633A0 (es) Un procedimiento para la preparacion de una composicion liquida que contiene un generador se poroxiacido y peroxido de hidrogeno o un adicto del mismo.
ES2042603T3 (es) Dispositivo para la aplicacion de vapor a una banda de material, como por ejemplo papel.
DE3868575D1 (de) Verformbare struktur.
ES8400520A1 (es) Procedimiento para el tratamiento de pastas papeleras quimicas.
ES2015838T3 (es) Procedimiento de blanqueado de pastas destintadas.
AU1272088A (en) Aqueous suspensions of microcapsules containing herbicidal N- chloroacetylcyclohexenamines
ES2045074T3 (es) Empleo de compuestos que contengan bisguanidos contra las huevas del oxiuro vermicular.
ES2117703T3 (es) Preparacion de factor viii.
GB1100709A (en) Two-stage purification of fibrous cellulose material
AU609481B2 (en) Process for the preparation of chemico-thermomechanical pulps
NO824357L (no) Fremgangsmåte til fremstilling av halvbleket cellulose.
ES2004846T3 (es) Procedimiento para el blanqueado de pastas.
ES2062463T3 (es) Procedimiento de blanqueo de pastas celulosicas quimicas.
ES2103824T3 (es) Procedimiento para obtener material de silicio nitrurable.
GB1064567A (en) Method in the manufacture of chemo-mechanical pulps by heating and defibrating in a vapour atmosphere under pressure and at increased temperature of wood chips impregnated with sulphite solution
FR2634233B1 (fr) Procede de fabrication de pates chimicothermomecaniques blanchies
FR2572017B1 (fr) Presse a chambre gonflable annulaire
ES504378A0 (es) Un procedimiento para la preparacion de un agente intensificador del calor.
MX152878A (es) Procedimiento mejorado para la estavilizacion de una solucion de peroxido de hidrogeno
USD221910S (en) Surgical table
SE8802522L (sv) Foerfarande foer saenkning av karbamathalten i produkter som tillverkats av cellulosakarbamat, samt produkter som tillverkats enligt foerfarandet
JPS5716657A (en) Wood-decomposing treatment
IT8148494A0 (it) Pasta cellulosica contenente un agente idrofilo di riduzione del legame interfibroso e relativo procedimento di applicazione
SE8700313D0 (sv) Procede de blanchiment des pates mecaniques