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TCF PULP [4 records]
Record 1 - internal organization data 2001-02-23
Record 1, English
Record 1, Subject field(s)
- Pulp and Paper
Record 1, Main entry term, English
- total chlorine-free pulp
1, record 1, English, total%20chlorine%2Dfree%20pulp
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- TCF pulp 1, record 1, English, TCF%20pulp
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Wood pulp that is totally free from chlorine. 1, record 1, English, - total%20chlorine%2Dfree%20pulp
Record 1, French
Record 1, Domaine(s)
- Pâtes et papier
Record 1, Main entry term, French
- pâte totalement libre de chlore
1, record 1, French, p%C3%A2te%20totalement%20libre%20de%20chlore
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- pâte sans chlore 2, record 1, French, p%C3%A2te%20sans%20chlore
correct, feminine noun
- pâte TCF 3, record 1, French, p%C3%A2te%20TCF
feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Pâte blanchie sans chlore gazeux ou autre composé chloré. 1, record 1, French, - p%C3%A2te%20totalement%20libre%20de%20chlore
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2000-12-07
Record 2, English
Record 2, Subject field(s)
- Pulp Preparation (papermaking)
Record 2, Main entry term, English
- totally chlorine-free
1, record 2, English, totally%20chlorine%2Dfree
correct, adjective phrase
Record 2, Abbreviations, English
- TCF 1, record 2, English, TCF
correct
Record 2, Synonyms, English
- totally chlorine free 2, record 2, English, totally%20chlorine%20free
correct, adjective phrase
- TCF 2, record 2, English, TCF
correct
- TCF 2, record 2, English, TCF
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
[Is said of] a pulp bleached without any chlorine compound ... 2, record 2, English, - totally%20chlorine%2Dfree
Record number: 2, Textual support number: 1 CONT
TCF paper is made with TCF pulp and recycled TCF paper. 1, record 2, English, - totally%20chlorine%2Dfree
Record 2, French
Record 2, Domaine(s)
- Préparation de la pâte à papier
Record 2, Main entry term, French
- totalement sans chlore
1, record 2, French, totalement%20sans%20chlore
correct, adjective phrase
Record 2, Abbreviations, French
Record 2, Synonyms, French
- sans chlore 2, record 2, French, sans%20chlore
correct, adjective phrase
- SC 2, record 2, French, SC
correct
- SC 2, record 2, French, SC
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
[Qualifie] une pâte qui a été blanchie sans qu'aucun produit à base de chlore n'ait été employé. 2, record 2, French, - totalement%20sans%20chlore
Record number: 2, Textual support number: 1 CONT
Papier blanchi sans chlore, vendu souvent comme papier bio ou éco. Cette appellation peut signifier beaucoup de choses : La cellulose peut être blanchie avec des composés chlorés au lieu de chlore [...] ou avec de l'oxygène. Les abréviations ECF et TCF indiquent plus exactement le processus de production du papier. ECF = «elementary chlorine free» = sans chlore élémentaire = blanchi avec des composés chlorés. TCF = «totally chlorine free» = totalement sans chlore = blanchi à l'oxygène. 1, record 2, French, - totalement%20sans%20chlore
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1998-11-16
Record 3, English
Record 3, Subject field(s)
- Pulp Preparation (papermaking)
Record 3, Main entry term, English
- peroxide stage
1, record 3, English, peroxide%20stage
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Peroxide brightening stages have been used for many years in mechanical pulp mills and has recently gained acceptance in kraft pulp mills. It has been used to replace chlorine dioxide brightening stages in applications where very low AOX or TCF pulps are required. For chemical pulps typical peroxide stage conditions are temperatures of 80-90°C, pHs over 10. 8 and retention times over 3h. It is important to maintain a high concentration of peroxide through the stage to reach the desired brightness. 1, record 3, English, - peroxide%20stage
Record 3, French
Record 3, Domaine(s)
- Préparation de la pâte à papier
Record 3, Main entry term, French
- stade au peroxyde
1, record 3, French, stade%20au%20peroxyde
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Les stades d'éclaircissement au peroxyde sont utilisés depuis de nombreuses années par les usines de pâte mécanique et ont récemment pénétrés les usines kraft. Le peroxyde remplace le bioxyde de chlore lors des derniers stades de blanchiment afin d'abaisser les rejets de COA ou pour permettre la production de pâte SC. Pour les pâtes chimiques, les conditions usuelles sont : une température de 80-90 °C; un pH supérieur à 10.8; et un temps de résidence de plus de trois heures. 1, record 3, French, - stade%20au%20peroxyde
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1998-08-12
Record 4, English
Record 4, Subject field(s)
- Pulp Preparation (papermaking)
Record 4, Main entry term, English
- acid treatment
1, record 4, English, acid%20treatment
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A treatment, most often SO2, but in some cases H2SO4 or HCl, applied a) After a final chlorine dioxide, hyprochlorite or peroxide stage to destroy residual bleaching agent and remove metal ions which prevents brightness loss and avoids fibre degradation, and to create a pH favourable for brightness stability(alkaline pulps tend to yellow on exposure to light and air) ;b) As a pretreatment before an oxygen stage, which tends to improve both brightness and physical strength, probably by removing metal ions from pulp; and c) Between stages, such as peroxide-hydrosulphite, to eliminate the washing steps by creating acid conditions necessary for the hydrosulphite stage, and to destroy residual peroxide by reduction which would otherwise consume costly hydrosulphite; d) Has been used in place of a chelation stage in a TCF sequence with peroxide. In this application the PH is very important. 1, record 4, English, - acid%20treatment
Record number: 4, Textual support number: 1 OBS
SO2 and H2SO4 should be read: SO2 and H2SO4. 2, record 4, English, - acid%20treatment
Record 4, French
Record 4, Domaine(s)
- Préparation de la pâte à papier
Record 4, Main entry term, French
- traitement à l'acide
1, record 4, French, traitement%20%C3%A0%20l%27acide
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Traitement pour lequel le SO2 est le plus souvent utilisé. Dans certains cas, on utilise également le H2SO4 ou le HCl. a) Utilisé en fin de séquence, après un traitement au bioxyde de chlore, à l'hypochlorite ou au peroxyde, il permet de détruire les résidus d'agents de blanchiment et d'enlever les ions métalliques. Ce traitement prévient la perte de blancheur (jaunissement) et la dégradation des fibres. Bref, un pH favorable à la stabilité de la blancheur est obtenu (les pâtes alcalines ont tendance à jaunir sous l'action de la lumière et de l'air). b) Utilisé comme prétraitement avant un traitement à l'oxygène ou un stade de peroxyde d'hydrogène, il permet d'améliorer à la fois la blancheur et les propriétés physiques, en solubilisant les métaux de transition. c) Entre deux stades tel que peroxyde et hydrosulfite, il permet d'éliminer l'étape de lavage en créant les conditions acidiques nécessaires à un traitement à l'hydrosulfite, et de détruire (par réduction) le peroxyde résiduaire, qui autrement consommerait l'hydrosulfite. 1, record 4, French, - traitement%20%C3%A0%20l%27acide
Record number: 4, Textual support number: 1 OBS
Dans le texte qui précède, on doit lire : SO2 ainsi que H2SO4. 2, record 4, French, - traitement%20%C3%A0%20l%27acide
Record 4, Spanish
Record 4, Textual support, Spanish
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