Process for lengthening the service life of catalysts comprises using a charge of inert material in the contact tubes, the tubular base and between the base and gas inlet and outlet

摘要

A process for lengthening the service life of catalysts comprises using a charge of inert material in the contact tubes, the tubular base and between the base and gas inlet and outlet hood of the reactor. Independent claims are also included for: (a) a container for stabilizing an inert material against drifting; (b) a tubular reactor comprising a reactor casing, bases (11, 12), contact tubes (4), gas inlet and outlet hoods (1, 2), and inlet and outlet openings for process gas and heat carriers. The lower hood is connected to a hydraulic lowering device; and (c) a process for burning off deposits on the insert material comprising treating the deposits with an oxygen-containing gas containing 0.1-50 vol.% oxygen at 200-800 deg C and 0.01-5.0 MPa pressure.