发明公开
EP2003114A1 METHYL METHACRYLATE PRODUCTION PROCESS
审中-公开
VERFAHREN ZUR HERSTELLUNG VONMETHACRYLSÄUREMETHYLESTER
- 专利标题： METHYL METHACRYLATE PRODUCTION PROCESS
- 专利标题（中）： VERFAHREN ZUR HERSTELLUNG VONMETHACRYLSÄUREMETHYLESTER
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申请号： EP07740948.0申请日： 2007-03-28
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公开(公告)号： EP2003114A1公开(公告)日： 2008-12-17
- 发明人: MIZUNO, Masahiko , SEO, Tateo , SUZUTA, Tetsuya
- 申请人： Sumitomo Chemical Company, Limited
- 申请人地址： 27-1, Shinkawa 2-chome, Chuo-ku Tokyo 104-8260 JP
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： 27-1, Shinkawa 2-chome, Chuo-ku Tokyo 104-8260 JP
- 代理机构： Duckworth, Timothy John
- 优先权： JP2006097937 20060331
- 国际公布： WO2007114457 20071011
- 主分类号： C07C67/38
- IPC分类号： C07C67/38 ; B01D3/14 ; B01D3/40 ; C07C4/10 ; C07C5/23 ; C07C11/12 ; C07C11/22 ; C07C69/653 ; C07B61/00
摘要：
A method of producing methyl methacrylate comprising the following steps:
Thermal decomposition step: a hydrocarbon having 3 or more carbon atoms is thermally decomposed to obtain a decomposed gas having a total content of propyne and propadiene of 2 wt% or more,
Separation step: mixed liquid rich in propyne and propadiene is separated from the decomposed gas obtained in the thermal decomposition step,
Propyne purification step: the mixed liquid rich in propyne and propadiene obtained in the separation step is subjected to extractive distillation, for separation into purified propyne, and crude propadiene containing propadiene as the main component,
Isomerization step: the crude propadiene obtained in the propyne purification step is isomerized in the presence of an isomerization catalyst, to obtain crude propyne containing propyne as the main component, and
Carbonylation step: the purified propyne obtained in the propyne purification step is reacted with carbon monoxide and methanol in the presence of a group VIII metal catalyst system, to produce methyl methacrylate.
Thermal decomposition step: a hydrocarbon having 3 or more carbon atoms is thermally decomposed to obtain a decomposed gas having a total content of propyne and propadiene of 2 wt% or more,
Separation step: mixed liquid rich in propyne and propadiene is separated from the decomposed gas obtained in the thermal decomposition step,
Propyne purification step: the mixed liquid rich in propyne and propadiene obtained in the separation step is subjected to extractive distillation, for separation into purified propyne, and crude propadiene containing propadiene as the main component,
Isomerization step: the crude propadiene obtained in the propyne purification step is isomerized in the presence of an isomerization catalyst, to obtain crude propyne containing propyne as the main component, and
Carbonylation step: the purified propyne obtained in the propyne purification step is reacted with carbon monoxide and methanol in the presence of a group VIII metal catalyst system, to produce methyl methacrylate.
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