发明名称 |
PROCESS FOR PRODUCING FURFURAL, FORMIC ACID AND ACETIC ACID FROM SPENT PULP-COOKING LIQUOR |
摘要 |
The invention relates to a process for producing furfural, for forming formic and acetic acids and for recovering formic and acetic acids in a pulp making process, in which an acid mixture containing mainly formic and acetic acids is used as a cooking chemical. The process of the invention is characterized by utilizing reactive evaporation and recycling of spent cooking liquors in evaporators in the recovering stage of the cooking chemicals. Thus it is possible to form effectively more furfural, formic acid and acetic acid from the dissolved organic matter contained in the cooking liquor and/or chemically bound acids contained therein.
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申请公布号 |
CA2477848(A1) |
申请公布日期 |
2003.09.12 |
申请号 |
CA20032477848 |
申请日期 |
2003.02.28 |
申请人 |
CHEMPOLIS OY |
发明人 |
TANSKANEN, JUHA;ROUSU, ESA;ANTTILA, JUHA;ROUSU, PASI |
分类号 |
B01D3/00;D21C3/00;D21C3/20;D21C11/00;D21C11/10;(IPC1-7):D21C11/00;D21C3/04 |
主分类号 |
B01D3/00 |
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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