Verfahren und Wirbelschicht-Reaktor zur Oxichlorierung von Ethylen, Sauerstoff und HCl

In contrast to present practice, where each heat exchange coil bundle is serviced by an external ring main, internal manifolds (9,10) are now provided to distribute cold water, and collect steam, respectively, from the coil bundles. The reactor shell is then pierced only at two points to fit external pipes (11,12) into the manifolds instead of the large number of flanged connections that were previously required to connect the external ring mains. Figures 3 - 8 are concerned with various constructions of the manifolds. Apart from different cross sections these show the manifold entirely internal, entirely external or partially internal and external to the reactor vessel. Throttling holes, or plates, are provided to equalize the pressure across individual coil bundles.