FIELD: chemistry.
SUBSTANCE: caustic soda is substituted with cheap lime and complexing, flocculation and acid-base neutralisation of aluminium sulphate are additionally used, the useful ingredients contained in black liquor are reused, output close to the yield of pulp is achieved, high-quality pulp is produced, cyclical utilisation of black liquor is carried out, and the problem of its pollution is solved.
EFFECT: highly effective pulp production.
10 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING FIBROUS SEMI-FINISHED MATERIAL FOR MAKING PAPER AND BOARD | 0 |
|
SU1067110A1 |
| PAPER PRODUCTS FROM STRAW OF CEREALS OF NATURAL COLOUR AND THEIR FABRICATION TECHNIQUE | 2008 |
|
RU2447219C2 |
| FIBROUS SEMI-FINISHED PRODUCT FROM SUNFLOWER HUSKS AND A METHOD OF ITS PRODUCTION (OPTIONS) | 2023 |
|
RU2813172C1 |
| METHOD AND SYSTEM FOR PULP PROCESSING USING COLD CAUSTIC EXTRACTION WITH ALKALINE FILTRATE REUSE | 2010 |
|
RU2523973C1 |
| METHOD OF PREPARING PULP FROM CORN STEMS | 2000 |
|
RU2249636C2 |
| METHOD AND SYSTEM OF PRODUCING SOLUBLE CELLULOSE MASS WITH HIGH CONTENT OF ALPHA-CELLULOSE | 2010 |
|
RU2535804C2 |
| METHOD FOR OBTAINING CELLULOSE FOR CHEMICAL PROCESSING FROM CELLULOSE-CONTAINING RAW MATERIALS | 2020 |
|
RU2763878C1 |
| SULFATE CELLULOSE PRODUCTION PROCESS | 1998 |
|
RU2172370C2 |
| 0 |
|
SU474582A1 | |
| METHOD OF REMOVING EXTRACTIVE SUBSTANCES WHEN PRODUCING CELLULOSE, CELLULOSE OBTAINED USING SAID METHOD AND USE THEREOF | 2010 |
|
RU2500688C2 |
