Stable long-term method for producing C5-aldehydes
    1.
    发明授权
    Stable long-term method for producing C5-aldehydes 有权
    稳定的长久生产C5醛的方法

    公开(公告)号:US09272973B2

    公开(公告)日:2016-03-01

    申请号:US14435052

    申请日:2013-09-27

    摘要: The invention relates to a process for preparing aldehydes having five carbon atoms, in which an input mixture containing 10% by weight to 50% by weight of linear butenes and less than 5% by weight of 1-butene is hydroformylated with synthesis gas in the presence of a catalyst system comprising rhodium and at least one bisphosphite ligand, wherein the hydroformylation is effected in a reactor from which, over an operating period, a cycle gas containing at least a portion of the products and unconverted reactants from the hydroformylation is continuously drawn off and partly condensed, and uncondensed components of the cycle gas are recycled into the reactor, and wherein, after the operating period has expired, the hydroformylation is stopped, the reactor is freed of reaction residues and the hydroformylation is restarted. It is based on the problem of making such a process more economically viable. The problem is solved by using a bisphosphite of the formula (1) and/or (2) as ligand, extending the operating period to more than 8000 h, and not separating solid reaction residues out of the reactor during the course of the operating period.

    摘要翻译: 本发明涉及一种制备具有五个碳原子的醛的方法,其中含有10重量%至50重量%的线性丁烯和小于5重量%的1-丁烯的输入混合物在合成气中加氢甲酰化 含有铑和至少一种二亚磷酸酯配体的催化剂体系的存在,其中加氢甲酰化反应在反应器中进行,在反应器中,在运行期间连续地抽出含有至少一部分产物的循环气体和来自加氢甲酰基化的未转化的反应物 并且循环气体的未冷凝的组分被再循环到反应器中,并且其中在操作期间已经过后,停止加氢甲酰化,反应器没有反应残余物,并且重新开始加氢甲酰化反应。 这是基于使这一过程更经济可行的问题。 通过使用式(1)和/或(2)的双亚磷酸酯作为配体来解决问题,将操作期延长至8000小时以上,并且在操作期间不将固体反应残余物从反应器中分离出来 。