BR0101851A - Method to treat pulp - Google Patents
Method to treat pulpInfo
- Publication number
- BR0101851A BR0101851A BR0101851A BR0101851A BR0101851A BR 0101851 A BR0101851 A BR 0101851A BR 0101851 A BR0101851 A BR 0101851A BR 0101851 A BR0101851 A BR 0101851A BR 0101851 A BR0101851 A BR 0101851A
- Authority
- BR
- Brazil
- Prior art keywords
- pulp
- ozone
- chlorine
- bleaching
- gas
- Prior art date
Links
Landscapes
- Paper (AREA)
Abstract
"MéTODO PARA TRATAR POLPA". A presente invençãorefere-se a um método e uma aparelhagem para tratar polpa.Especialmente, a invenção refere-se a um método e um aparelhode branqueamento para branquear polpa com ozónio e dióxido decloro e/ou cloro, na presença de oxigênio. Um recursocaracterístico do método de branqueamento de polpa em umprocesso contínuo com ozónio e cloro e/ou dióxido de cloro, deacordo com a invenção, método no qual o ozónio é introduzidoprimeiro na polpa com oxigênio que atua como gás transportadorprincipal para o ozónio, após o que o cloro e/ou dióxido de cloro émisturado na polpa, é que o ozónio é misturado na polpa, o gástransportador é separado depois do branqueamento com ozónio(20, 200), dióxido de cloro e/ou cloro é adicionado à polpa, a polpaé transferida junto com o gás transportador remanescente paradentro de uma torre com corrente ascendente (26; 261), o gástransportador é separado, e depois da separação do gás, a polpa élevada para um lavador (32, 232) ou uma prensa."METHOD FOR TREATING PULP". The present invention relates to a method and apparatus for treating pulp. Especially, the invention relates to a method and a bleaching apparatus for bleaching pulp with ozone and chlorine dioxide and / or chlorine in the presence of oxygen. A characteristic feature of the pulp bleaching method in a continuous process with ozone and chlorine and / or chlorine dioxide, according to the invention, a method in which ozone is first introduced into the pulp with oxygen which acts as the main carrier gas for ozone, after which chlorine and / or chlorine dioxide is mixed in the pulp, is that ozone is mixed in the pulp, the gas carrier is separated after bleaching with ozone (20, 200), chlorine dioxide and / or chlorine is added to the pulp, the pulp transferred together with the carrier gas remaining within an upstream turret (26; 261), the gas carrier is separated, and after the gas has been separated, the pulp is taken to a washer (32, 232) or a press.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20001095A FI20001095A (en) | 2000-05-10 | 2000-05-10 | Method for treating pulp |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0101851A true BR0101851A (en) | 2001-12-18 |
Family
ID=8558358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0101851A BR0101851A (en) | 2000-05-10 | 2001-05-10 | Method to treat pulp |
Country Status (2)
Country | Link |
---|---|
BR (1) | BR0101851A (en) |
FI (1) | FI20001095A (en) |
-
2000
- 2000-05-10 FI FI20001095A patent/FI20001095A/en not_active IP Right Cessation
-
2001
- 2001-05-10 BR BR0101851A patent/BR0101851A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FI20001095A (en) | 2001-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B25D | Requested change of name of applicant approved | ||
B25G | Requested change of headquarter approved | ||
B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] |