Difference between revisions of "Carbonizing of wool"
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;Typical parameters of the process | ;Typical parameters of the process | ||
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| align="center" style="background:#2266CC;"|'''Techniques''' | | align="center" style="background:#2266CC;"|'''Techniques''' | ||
| align="center" style="background:#2266CC;"|'''Temperature [°C]''' | | align="center" style="background:#2266CC;"|'''Temperature [°C]''' | ||
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| align="center" style="background:#2266CC;"|'''Pressure (bar)''' | | align="center" style="background:#2266CC;"|'''Pressure (bar)''' | ||
| align="center" style="background:#2266CC;"|'''Heat transfer medium''' | | align="center" style="background:#2266CC;"|'''Heat transfer medium''' | ||
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| align="center" style="background:#2266CC;"|'''Literature:''' | | align="center" style="background:#2266CC;"|'''Literature:''' | ||
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| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| soaking|| align="center"| 20-30|||||| align="center"| 2 - 3 h|| align="center"| solution containing 6 – 8- % of mineral acid (generally sulphuric acid), 1-2 g/l detergent|| align="center"| wool carbonising |
|- | |- | ||
| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| pressing/centrifugation (ev. Hydro-extraction)|||||||||| align="center"| until 5 – 7,5 % of sulphuric acid and 50 – 65 % of water remain|| |
|- | |- | ||
| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| drying|| align="center"| 65 – 90|||||||||| |
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| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| baking|| align="center"| 105 – 130|||||| align="center"| drying + baking ~ 1 h|||| |
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| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| crush embrittled vegetable matter (VM)|||||||||| align="center"| heavy fluted rollers|| |
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| − | | style="background:#AACCEE;"| | + | | style="background:#AACCEE;"| remove charred VM dust|||||||||| align="center"| rotating shaker/de-duster|| |
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| + | | style="background:#AACCEE;"| neutralising bowl |||||||||| align="center"| containing sodium carbonate|| | ||
| + | |- | ||
| + | | style="background:#AACCEE;"| Rinsing|||||||||| align="center"| small addition of detergent|| | ||
| + | |- | ||
| + | | style="background:#AACCEE;"| Bleaching |||||||||| align="center"| with hydrogen peroxide at approximately pH 5 with formic acid|| | ||
| + | |- | ||
| + | | style="background:#AACCEE;"| final drying|||||||||||| | ||
|} | |} | ||
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Back to [[Subsection DB textiles|EFFICIENCY FINDER FOR TEXTILE INDUSTRY]] | Back to [[Subsection DB textiles|EFFICIENCY FINDER FOR TEXTILE INDUSTRY]] | ||
Revision as of 10:19, 10 November 2010
Back to EFFICIENCY FINDER FOR TEXTILE INDUSTRY
- Wool carbonising
- Typical parameters of the process
| Techniques | Temperature [°C] | Pressure (bar) | Heat transfer medium | Residence Time | Additional information | Literature: |
| soaking | 20-30 | 2 - 3 h | solution containing 6 – 8- % of mineral acid (generally sulphuric acid), 1-2 g/l detergent | wool carbonising | ||
| pressing/centrifugation (ev. Hydro-extraction) | until 5 – 7,5 % of sulphuric acid and 50 – 65 % of water remain | |||||
| drying | 65 – 90 | |||||
| baking | 105 – 130 | drying + baking ~ 1 h | ||||
| crush embrittled vegetable matter (VM) | heavy fluted rollers | |||||
| remove charred VM dust | rotating shaker/de-duster | |||||
| neutralising bowl | containing sodium carbonate | |||||
| Rinsing | small addition of detergent | |||||
| Bleaching | with hydrogen peroxide at approximately pH 5 with formic acid | |||||
| final drying |
