FIELD: paper.
SUBSTANCE: invention relates to a method for producing alpha cellulose, including subjecting the raw material mass to mechanical treatment, thermochemical treatment, washing, expressing, and drying; characterised by the raw material mass being passed through a mechanical picking unit, a cleaning loosener, and a carding machine; then pre-washed in a solution of caustic soda and a wetting agent, acid-treated in a solution of 91% sulphuric acid and a wetting agent, and subjected to intermediate washing in a solution of a wetting agent; followed by treatment with an alkaline peroxide solution and three washings, the first and third one whereof are performed in a solution of a wetting agent, and the second one, after 30 minutes of cooling, in a solution of a wetting agent with the addition of sulphuric acid; the process ending with centrifugation and drying.
EFFECT: ensured production of alpha cellulose.
8 cl
Title | Year | Author | Number |
---|---|---|---|
METHOD OF BLEACHING LINEN FIBRES FOR PRODUCTION OF MEDICAL SUPPLIES | 2013 |
|
RU2525781C1 |
PROCESS OF MANUFACTURING WOOL FROM CELLULOSE FIBERS | 2001 |
|
RU2191231C1 |
PROCESS OF MANUFACTURING WOOL FROM CELLULOSE FIBERS | 2001 |
|
RU2191232C1 |
METHOD FOR PRODUCING CELLULOSE FROM MISCANTHUS FOR CHEMICAL PROCESSING | 2020 |
|
RU2763880C1 |
FIBER MANUFACTURE PROCESS | 1998 |
|
RU2129171C1 |
METHOD FOR PRODUCING CELLULOSE | 2013 |
|
RU2507331C1 |
CELLULOSE MANUFACTURING PROCESS | 2005 |
|
RU2304647C2 |
METHOD FOR PRODUCING HIGH-PURITY FLAX FIBRE CELLULOSE | 2013 |
|
RU2554589C2 |
CELLULOSE MANUFACTURING PROCESS | 2005 |
|
RU2304648C2 |
METHOD FOR OBTAINING CELLULOSE FOR CHEMICAL PROCESSING FROM CELLULOSE-CONTAINING RAW MATERIALS | 2020 |
|
RU2763878C1 |
Authors
Dates
2022-09-09—Published
2021-07-06—Filed