FIELD: chemistry.
SUBSTANCE: invention relates to chemical processing of wood and can be used at wood-processing enterprises and in wood-pulp and paper industry for spruce bark processing with obtaining coniferous wax, antocyanidin pigment, pectine and active coal. The method of spruce bark processing is described. It includes bark extraction with nonpolar solvent with extraction of coniferous wax, further isolating from bark of antocyanidin pigment and processing of remaining part of bark into active coal; after obtaining antocyanidin pigment the remaining part of bark is subjected to extraction with 0.5% water solution of ammonium oxalate at temperature 95-100°C with isolating pectine.
EFFECT: achieving practically full utilisation of bark with production of coniferous wax, antocyanidin pigment, pectine and active coal.
1 dwg, 2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CEDAR BARK INTEGRATED PROCESSING | 2007 |
|
RU2335532C1 |
| METHOD OF PROCESSING PINE TREE BARK | 2008 |
|
RU2400511C2 |
| METHOD OF PROCESSING BARK OF SIBERIAN LARCH | 2000 |
|
RU2175668C1 |
| METHOD OF PROCESSING SILVER FIR BARK | 1998 |
|
RU2137821C1 |
| METHOD OF THE LARCH BARK COMPLEX PROCESSING | 2017 |
|
RU2657427C1 |
| METHOD FOR PROCESSING OF CONIFER BARK | 2008 |
|
RU2400357C2 |
| METHOD FOR PROCESSING FIR BARK | 2007 |
|
RU2333232C1 |
| METHOD FOR COMPLEX PROCESSING OF FIR BARK | 2023 |
|
RU2821519C1 |
| METHOD FOR COMPREHENSIVE PROCESSING OF PINE BARK | 2021 |
|
RU2783872C1 |
| METHOD OF BIRCH BARK CONVERSION | 2008 |
|
RU2352350C1 |
