发明名称 |
Menetelmä ja järjestelmä ksylaanin eristämiseksi kasvimateriaalista |
摘要 |
A method and a system for preparing xylan and calcium carbonate, xylan, a cellulose fibre, and precipitated calcium carbonate. The method includes extracting xylan from cellulose fibres with sodium hydroxide to form a mixture containing cellulose fibres and an extract solution containing xylan; removing the cellulose fibres from the mixture to isolate the extract solution; adding carbon dioxide to the isolated extract solution to form a mixture containing a liquid brightener and precipitated xylan; separating the brightener from the mixture to isolate the precipitated xylan; adding calcium hydroxide to the separated brightener to form a mixture of precipitated calcium carbonate and liquid sodium hydroxide; and removing the sodium hydroxide from the mixture to isolate the calcium carbonate. |
申请公布号 |
FI126212(B) |
申请公布日期 |
2016.08.15 |
申请号 |
FI20120005345 |
申请日期 |
2012.03.27 |
申请人 |
UPM-Kymmene Corporation;Stora Enso Oyj |
发明人 |
KROGERUS, Björn;FUHRMANN, Agneta;LAINE, Christiane |
分类号 |
C08B37/00;A23L29/206;C01F11/18;C08B1/00 |
主分类号 |
C08B37/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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