发明申请
- 专利标题： Two-stage reactor for the production of melamine
- 专利标题（中）： 用于生产三聚氰胺的两级反应器
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申请号： US10542306申请日： 2004-01-16
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公开(公告)号： US20060167250A1公开(公告)日： 2006-07-27
- 发明人: Christian Kuhrs , Eckehard Danz , Wolfgang Steiner , Ralf-Thomas Rahn , Thomas Grabler , Reiner Geter , Klaus Harth , Markus Holzle
- 申请人： Christian Kuhrs , Eckehard Danz , Wolfgang Steiner , Ralf-Thomas Rahn , Thomas Grabler , Reiner Geter , Klaus Harth , Markus Holzle
- 申请人地址： DE Ludwigshafen D-67056
- 专利权人： BASF AKTIENGESELLSCHAFT
- 当前专利权人： BASF AKTIENGESELLSCHAFT
- 当前专利权人地址： DE Ludwigshafen D-67056
- 优先权： DE103017038 20030117; DE103375015 20030814
- 国际申请： PCT/EP04/00327 WO 20040116
- 主分类号： C07D251/60
- IPC分类号： C07D251/60
摘要：
The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.
公开/授权文献
- US07253280B2 Two-stage reactor for the production of melamine 公开/授权日：2007-08-07
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