FIELD: cellulose treatments. SUBSTANCE: method for bleaching cellulose includes treatment of cellulose mass with gaseous mixture of ozone and carrier gas to produce foamy mass containing water, cellulose fiber and mixture of ozone and carrier gas. Treatment is carried out at fiber concentration in foamy mass of 5-25%. Treatment is carried out in one or several stages, mainly, in two stages. After the first stage, the residual gas is drawn-off and the second stage is conducted with use of said residual gas in the presence of additional amount of fresh gaseous mixture of ozone and carrier gas. Carrier gas is used in form of oxygen or nitrogen. EFFECT: higher efficiency. 4 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING PULP | 1993 |
|
RU2084574C1 |
| METHOD FOR BLEACHING OF CELLULOSE STAPLE FIBERS | 1991 |
|
RU2040616C1 |
| MULTISTEP METHOD OF CELLULOSE WHITENING | 1990 |
|
RU2044809C1 |
| METHOD OF PREPARING BLEACHED PULP AND A METHOD FOR DELIGNIFICATION AND BLEACHING OF LIGNOCELLULOSE MATERIAL | 1990 |
|
RU2102547C1 |
| METHOD OF PROCESSING TECHNICAL GASES AND DEVICE | 1988 |
|
RU2068730C1 |
| METHOD OF BLEACHING OF CELLULOSE AND OTHER CELLULOSE AND LIGNOCELLULOSE FIBROUS MATERIALS AND THREE-STAGE METHOD OF BLEACHING OF CELLULOSE AND LIGNOCELLULOSE MATERIALS | 1995 |
|
RU2141016C1 |
| METHOD OF REDUCTION OF EVOLUTION OF CONTAINED IN FLUE GASES FORMED IN COMBUSTION OF NITROGEN-CONTAINING FUELS IN FLUIDIZED BED REACTORS | 1991 |
|
RU2093755C1 |
| METHOD OF BLEACHING CELLULOSE | 2019 |
|
RU2724362C1 |
| BREAST BOX FOR DISTRIBUTION OF FIBROUS MASS, CONCENTRATION 6 - 15%, ON SHEET-FORMING DEVICE | 1989 |
|
RU2042756C1 |
| CELLULOSE PROCESSING APPARATUS AND METHOD | 1990 |
|
RU2092642C1 |
