Reactor unit used as an autothermal primary reformer for producing hydrogen for fuel cells in vehicles has a feed line emptying into a reaction chamber

摘要

Reactor unit comprises a reaction chamber (15) arranged in an inner chamber (9) of an insulating chamber (10), and at least one feed line (25) that empties process fluid into the reaction chamber. The feed line has an expansion bellows with two communicating sections (16, 17) at one point. An Independent claim is also included for a process for operating a reactor unit comprising dividing the feed line into two communicating sections that are limited by an opening (23) leading to the inside of the feed line. Preferred Features: The expansion bellows is arranged in the inner chamber of a chamber filled with pressurized fluid. The height of the chamber fluid pressure can be controlled. The line sections have front sides (19, 20) facing each other to form an annular gap-like opening and are arranged at an axial distance from each other.