Polyamides, oligomers thereof or mixtures thereof, if required with further reaction products, are prepared by reacting aminonitriles or dinitriles and diamines or a mixture containing aminonitrile, dinitrile and diamine, and, if required, further polyamide-forming monomers and/oligomers with water in a reactor (
1
) having a vertically oriented longitudinal axis, by a process in which, in the reactor (
1
), the reaction product is removed from the bottom and ammonia formed and any further low molecular weight compounds formed and water are taken off via the top (
2
), wherein the reactor (
1
)
has at least two chambers (
4
) arranged one on top of the other in the longitudinal direction,
the chambers (
4
) being separated from one another by liquid-tight trays (
5
),
each chamber (
4
) being connected by a liquid overflow (
6
) to the chamber (
4
) directly underneath and a liquid product stream being taken off by the liquid overflow (
6
) of the lowermost chamber (
4
),
the gas space (
7
) above the liquid level in each chamber (
4
) being connected to the chamber (
4
) arranged directly above in each case by one or more conduit pipes (
8
) which in each case opens or open into a gas distributor (
9
) having orifices (
11
) for gas exit below the liquid level,
and comprising in each case at least one baffle plate (
12
) which is arranged vertically around each gas distributor (
9
) and whose upper end terminates below the liquid level and whose lower end terminates above the liquid-tight tray (
5
) of the chamber (
4
) and which separates each chamber (
4
) into one or more gassed (
13
) and into one or more ungassed (
14
) spaces.
聚酰胺、其低聚物或其混合物(如需要)与进一步的反应产物在反应器中通过与
水反应制备
氨腈或二腈和二胺,或含有
氨腈、二腈和二胺的混合物,以及(如需要)进一步的聚酰胺形成单体和/或低聚物 (
1
) 中,采用以下工艺:在反应器 (
1
) 中,反应产物从底部排出,形成的
氨和任何进一步形成的低分子量化合物及
水从顶部排出 (
2
) ,其中反应器 (
1
)
至少有两个腔室 (
4
) 纵向一上一下排列、
腔室 (
4
由液密托盘 (
5
),
每个室 (
4
通过液体溢流 (
6
) 与腔室 (
4
) 的正下方,液体产品流由液体溢流 (
6
的液体溢流 ( 6 ) 流出。
4
),
气体空间 (
7
)、每个腔室液面上方的气体空间 (
4
) 中液面以上的气体空间 ( 7 )
4
在每种情况下,通过一个或多个导管 (
8
在每种情况下,这些管道都会与气体分配器 (
9
),其上有孔(
11
) ,用于气体从液面以下排出、
在每种情况下至少包括一块挡板 (
12
) 垂直布置在每个气体分配器 (
9
) 周围垂直布置,其上端位于液面以下,下端位于液密托盘 (
5
) 的上方。
4
) 的液体密封托盘 ( 5 ) 的上方,并将每个腔室 (
4
) 分隔成一个或多个气室 (
13
) 和一个或多个无气 (
14
) 空间。