| 摘要 |
A process for conveying a stream of a liquid F comprising (meth)acrylic monomers with a delivery pump P through a pipeline with circular cross-sectional area OF in which is mounted a restrictor B which firstly closes an area portion of the open cross-sectional area QF and secondly leaves open an area portion TF of the cross-sectional area QF, the outline of which comprises a circular arc of the circular outline of the cross-sectional area QF, said circular arc being within the lower tenth of the circular outline of the cross-sectional area QF. |
