FR2405327A1 - Sechage de pate de bois - Google Patents
Sechage de pate de boisInfo
- Publication number
- FR2405327A1 FR2405327A1 FR7828480A FR7828480A FR2405327A1 FR 2405327 A1 FR2405327 A1 FR 2405327A1 FR 7828480 A FR7828480 A FR 7828480A FR 7828480 A FR7828480 A FR 7828480A FR 2405327 A1 FR2405327 A1 FR 2405327A1
- Authority
- FR
- France
- Prior art keywords
- air
- degrees
- pulp
- contact
- wood pulp
- 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
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
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
- D21C9/185—De-watering; Elimination of cooking or pulp-treating liquors from the pulp comprising at least one step where the pulp is suspended in a gaseous medium, e.g. flash drying
-
- 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
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Procédé pour le séchage de pâte de bois dans lequel : 1 degrés On chauffe de l'air au moyen d'un brûleur 1 à une température de 300 à 600 degrés C en brûlant un combustible dans l'air; 2 degrés On met l'air chaud en contact avec la pâte de bois et on soumet l'air et la pâte à des mouvements de turbulence dans un séchoir 2 comprenant des pièces contrarotatives qui s'entremêlent en tournant, de manière que les fibres de bois séchées soient en suspension dans l'air à leur sortie du déchoir; et 3 degrés On sépare en 3 les fibres de bois séchées de l'air. Ce procédé est caractérisé en ce que l'on recycle une partie de Pair ainsi séparé, de manière que l'air admis au brûleur comprenne de l'air frais et de l'air recyclé avec une proportion d'air frais telle que l'air chaud qui est mis en contact avec la pâte ait une teneur en oxygène inférieur à 10 % en volumes. En abaissant ainsi la teneur en oxygène de l'air chaud qui est mis en contact avec la pâte, on supprime les risques d'incendie par combustion de celle-ci.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4159677 | 1977-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2405327A1 true FR2405327A1 (fr) | 1979-05-04 |
FR2405327B1 FR2405327B1 (fr) | 1983-06-10 |
Family
ID=10420432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7828480A Granted FR2405327A1 (fr) | 1977-10-06 | 1978-10-05 | Sechage de pate de bois |
Country Status (9)
Country | Link |
---|---|
US (1) | US4253822A (fr) |
BR (1) | BR7806583A (fr) |
CA (1) | CA1092804A (fr) |
DE (1) | DE2843296C2 (fr) |
FI (1) | FI71007C (fr) |
FR (1) | FR2405327A1 (fr) |
IT (1) | IT1160696B (fr) |
NO (1) | NO150924C (fr) |
SE (1) | SE7810441L (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4759777A (en) * | 1987-11-10 | 1988-07-26 | Bact Engineering, Inc. | Decontamination of wood chip dryer gas |
AUPQ022599A0 (en) * | 1999-05-06 | 1999-06-03 | Slrg Drying Co. Pty Ltd | Method and apparatus for drying material |
US6862819B2 (en) * | 2001-10-30 | 2005-03-08 | Weyerhaeuser Company | System for producing dried singulated cellulose pulp fibers using a jet drier and injected steam |
US6748671B1 (en) | 2001-10-30 | 2004-06-15 | Weyerhaeuser Company | Process to produce dried singulated cellulose pulp fibers |
US7018508B2 (en) * | 2001-10-30 | 2006-03-28 | Weyerhaeuser Company | Process for producing dried singulated crosslinked cellulose pulp fibers |
US6769199B2 (en) * | 2001-10-30 | 2004-08-03 | Weyerhaeuser Company | Process for producing dried singulated cellulose pulp fibers using a jet drier and injected steam and the product resulting therefrom |
US6782637B2 (en) * | 2001-10-30 | 2004-08-31 | Weyerhaeuser Company | System for making dried singulated crosslinked cellulose pulp fibers |
US7334347B2 (en) * | 2001-10-30 | 2008-02-26 | Weyerhaeuser Company | Process for producing dried, singulated fibers using steam and heated air |
US7201825B2 (en) * | 2002-10-25 | 2007-04-10 | Weyerhaeuser Company | Process for making a flowable and meterable densified fiber particle |
CN1333225C (zh) * | 2004-04-21 | 2007-08-22 | 夏银增 | 一种高效节能木材烘干窑 |
ATE525451T1 (de) * | 2007-03-07 | 2011-10-15 | Dsm Ip Assets Bv | Verfahren zum trocknen und reinigen eines teilchenförmigen cellulose/kunststoff- abfallgemischs |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1224634A (fr) * | 1958-05-19 | 1960-06-24 | Courtaulds Ltd | Procédé de séchage de la pâte de bois et appareil utilisé |
US3187441A (en) * | 1961-08-15 | 1965-06-08 | Buttner Werke Ag | Elongated drum drier with drying gas distributing ducts |
DE1729285A1 (de) * | 1967-07-10 | 1971-06-16 | Buettner Schilde Haas Ag | Einrichtung zum Trocknen von Holzspaenen zur Herstellung von Spanplatten |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3256614A (en) * | 1961-05-29 | 1966-06-21 | D & S Engineering Ltd | Plant for drying of finely divided material, especially wood pulp and cellulose |
US3604824A (en) * | 1970-04-27 | 1971-09-14 | Universal Oil Prod Co | Thermal incineration unit |
US3808090A (en) * | 1970-10-01 | 1974-04-30 | F Luhde | Mechanical abrasion of wood particles in the presence of water and in an inert gaseous atmosphere |
DE2512603C2 (de) * | 1975-03-21 | 1977-03-03 | Siemens Ag | Vorrichtung zur beseitigung von lackrueckstaenden |
-
1978
- 1978-09-26 CA CA312,141A patent/CA1092804A/fr not_active Expired
- 1978-09-28 US US05/946,728 patent/US4253822A/en not_active Expired - Lifetime
- 1978-10-04 DE DE2843296A patent/DE2843296C2/de not_active Expired
- 1978-10-04 BR BR7806583A patent/BR7806583A/pt unknown
- 1978-10-05 FI FI783032A patent/FI71007C/fi not_active IP Right Cessation
- 1978-10-05 NO NO783377A patent/NO150924C/no unknown
- 1978-10-05 SE SE7810441A patent/SE7810441L/xx unknown
- 1978-10-05 FR FR7828480A patent/FR2405327A1/fr active Granted
- 1978-10-06 IT IT69319/78A patent/IT1160696B/it active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1224634A (fr) * | 1958-05-19 | 1960-06-24 | Courtaulds Ltd | Procédé de séchage de la pâte de bois et appareil utilisé |
US3187441A (en) * | 1961-08-15 | 1965-06-08 | Buttner Werke Ag | Elongated drum drier with drying gas distributing ducts |
DE1729285A1 (de) * | 1967-07-10 | 1971-06-16 | Buettner Schilde Haas Ag | Einrichtung zum Trocknen von Holzspaenen zur Herstellung von Spanplatten |
Also Published As
Publication number | Publication date |
---|---|
NO150924B (no) | 1984-10-01 |
IT7869319A0 (it) | 1978-10-06 |
FI783032A (fi) | 1979-04-07 |
FI71007B (fi) | 1986-07-18 |
NO783377L (no) | 1979-04-09 |
US4253822A (en) | 1981-03-03 |
DE2843296A1 (de) | 1979-04-12 |
IT1160696B (it) | 1987-03-11 |
BR7806583A (pt) | 1979-05-02 |
CA1092804A (fr) | 1981-01-06 |
SE7810441L (sv) | 1979-04-07 |
NO150924C (no) | 1985-01-16 |
FR2405327B1 (fr) | 1983-06-10 |
DE2843296C2 (de) | 1986-11-06 |
FI71007C (fi) | 1986-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |