发明名称 |
METHOD OF MAKING PURIFIED METHANOL FROM A LIQUEFIED FRACTION OBTAINED FROM A SULFATE PULP PROCESS |
摘要 |
The invention relates to a method for making purified methanol from a liquefied fraction obtained from a sulfate pulp process and containing methanol and sulfur contaminants, its main sulfur contaminants being methyl mercaptan, dimethyl sulfide and dimethyl disulfide. According to the invention, the fraction is subjected to an oxidation treatment, followed by separating the methanol by distillation or water vapor distillation from distillation residue containing sulfur-bearing oxidation products. From the distillation residue can be crystallized dimethyl sulfone produced in oxidation and obtained as a by-product of the process. |
申请公布号 |
EP2670908(A1) |
申请公布日期 |
2013.12.11 |
申请号 |
EP20120742220 |
申请日期 |
2012.02.02 |
申请人 |
STORA ENSO OYJ |
发明人 |
RAESAENEN, TIINA;VILJAMAA, KATJA;ISOAHO, JUKKA PEKKA;ALEN, RAIMO;PAKKANEN, HANNU |
分类号 |
D21C11/14;C07C29/80;C07C31/04;D21C11/00 |
主分类号 |
D21C11/14 |
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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