FIELD: textile, paper.
SUBSTANCE: in accordance with preferable versions of this invention realisation, method and device are provided for continuous production of cellulose mass from suspension produced from ground hard wood, by means of its treatment at the first stage of boiling under conditions sufficient to reduce content of syringice acid (s-ligning) in hard wood compared to content of guaiac ligning in it (g-ligning), and subsequent treatment of suspension of ground hard wood at the second stage of boiling under conditions sufficient to reduce content of g-lignin that remain in it after the first stage of boiling.
EFFECT: reduced amount of cellulose mass wastes with specified Kapp number.
18 cl, 2 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND SYSTEM FOR THIN CHIPS BOILING IN DIGESTER | 2010 |
|
RU2555655C2 |
| CONTINUOUS PROCESS FOR PRODUCTION OF CHEMICAL CELLULOSE PULP AND CONTINUOUS COOKING KETTLE | 1994 |
|
RU2165433C2 |
| METHOD OF PRODUCING CELLULOSE PULP | 2012 |
|
RU2606867C2 |
| CELLULOSE PRODUCTION METHOD | 2018 |
|
RU2808813C2 |
| METHOD AND APPARATUS FOR COOKING SULFATE CELLULOSE (VERSIONS), AND SULFATE CELLULOSE PRODUCED BY THIS METHOD | 1994 |
|
RU2127783C1 |
| METHOD AND SYSTEM OF PRODUCING SOLUBLE CELLULOSE MASS WITH HIGH CONTENT OF ALPHA-CELLULOSE | 2010 |
|
RU2535804C2 |
| METHOD FOR MANUFACTURING SOLUBLE WOOD FIBRE PULP | 2019 |
|
RU2793493C2 |
| METHOD AND SYSTEM FOR PRODUCTION OF LIGNIN WITH HIGH MOLECULAR WEIGHT | 2016 |
|
RU2723917C1 |
| PERIODIC PROCESS OF PRODUCTION OF KRAFT PULP (VERSIONS) | 1997 |
|
RU2128259C1 |
| METHODS OF CARBONATE PRETREATMENT AND PULPING CELLULOSIC MATERIAL | 2007 |
|
RU2445414C2 |
