Patent ID: 8273314

Claim:
An exchanger-reactor ( 1 ) comprising: a vessel ( 2 ); a distributor suitable for distributing a feed through a fixed bed catalytic zone ( 10 ); a collector ( 6 ) suitable for collecting effluent derived from the catalytic zone ( 10 ); a heater suitable for heating the catalytic zone ( 10 ); in which said collector ( 6 ) comprises conduits passing through over the entire height of the catalytic zone ( 10 ), said conduits being distributed in the catalytic zone and interposed between the heater, and in which the heater is contained in sheaths ( 8 ) which are partially immersed in the catalytic zone ( 10 ), the sheaths ( 8 ) being open at one of their ends and closed at the other, the open end being fixed to an upper tube plate ( 21 ) defining the collection chamber ( 19 ) which is located above the catalytic zone ( 10 ), said heater within a sheath comprising at least one combustion zone ( 13 ), an inlet for supplying said combustion zone ( 13 ) with an oxidizing gas mixture ( 15 ) and with a gaseous fuel ( 17 ), and an outlet for evacuating the gaseous effluent deriving from the combustion ( 14 ).