发明名称 |
PROCESS FOR THE PRODUCTION OF ALKYL ETHERS BY THE ETHERIFICATION OF ISOBUTENE |
摘要 |
Process for the production of alkyl ethers by the etherification of isobutene, contained in C<SUB>4</SUB>-C<SUB>5 </SUB> hydrocarbon streams, with linear alcohol, in the presence of acid catalysts, comprising the following essential steps: a) feeding the isobutene contained in C<SUB>4</SUB>-C<SUB>5</SUB> hydrocarbon cuts, together with one or more streams containing linear alcohol, to a first reaction step; b) sending the stream leaving the first reaction step to a first distillation area, separating a light stream from a heavy stream containing the desired ether; c) feeding the light stream separated in the first distillation area, together with one or more streams containing linear alcohol, to a second reaction step; d) sending the stream leaving the second reaction step to a second distillation area separating a light stream from a heavy stream containing ether, C<SUB>4</SUB> hydrocarbons and alcohol which is recycled to the first distillation area; e) sending the light stream in the second distillation area to a recovery section of the linear alcohol contained therein; f) recycling the linear alcohol recovered in the recovery section to at least one of the two reaction steps. The present invention relates to plant solutions which allow the alcohol /isobutene molar ratio to be increased in the reaction steps and therefore maximizing the conversion of isobutene. |
申请公布号 |
WO2008009409(A1) |
申请公布日期 |
2008.01.24 |
申请号 |
WO2007EP06307 |
申请日期 |
2007.07.12 |
申请人 |
SNAMPROGETTI S.P.A.;DI GIROLAMO, MARCO;CONTE, MASSIMO;SGAMBATI, ANTONIO;CIPELLI, ALBERTO |
发明人 |
DI GIROLAMO, MARCO;CONTE, MASSIMO;SGAMBATI, ANTONIO;CIPELLI, ALBERTO |
分类号 |
C07C41/06;C07C43/04 |
主分类号 |
C07C41/06 |
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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