Patent ID: 7134848
Filing Date: 2006-11-14
Classification: F04D

Abstract:
1. A pump having a pump guide tube for the transport of a heat-exchange medium for a reactor having a bundle of catalyst tubes with a vertically arranged longitudinal axis, with supply of the heat-exchange medium in the upper region of the reactor into the interspace between the contact tubes and discharge of the heat-exchange medium from the lower region of the reactor, wherein the pump has a casing which surrounds the pump guide tube, having an aperture in the lower part of the casing via which the heat-exchange medium discharged from the lower region of the reactor by means of the pump flows into the casing, flows upward in the region between the inner wall of the casing and the outer wall of the pump guide tube, flows into the interior of the pump guide tube via an aperture in the upper region of the pump guide tube, flows through the pump guide tube from top to bottom and flows via an aperture in the lower region of the pump guide tube into the reactor, into the upper region of the interspace between the catalyst tubes, wherein the heat-exchange medium flows via the aperture in the lower region of the pump guide tube into a further interspace between the inner wall of the casing and the outer wall of the pump guide tube, flows through this interspace from bottom to top and flows via an aperture in the upper region of the interspace into the reactor, into the upper region of the interspace between the contact tubes.