Patent ID: 7422728

Claim:
A partial oxidation reactor comprising: an elongated jacket along an axis of any orientation, means ( 12 ) for supplying a preheated gas that contains oxygen and optionally water vapor, means ( 9 ) for supplying a hydrocarbon feedstock, means ( 11 ) for evacuation of a hydrogen-rich effluent, a first internal chamber ( 5 ) within said jacket for carrying out an essentially isothermal partial oxidation reaction, wherein said first internal chamber is connected to said means ( 9 ) for supplying hydrocarbon feedstock and to said means ( 12 ) for supplying preheated gas, gas turbulizing means ( 13 ) within said first internal chamber ( 5 ), and means ( 8 ) for linking said first chamber ( 5 ) to a second chamber ( 7 ), wherein said second chamber has a volume suitable for carrying out a piston flow, said linking means ( 8 ) comprising at least one orifice, and said first and second chambers indirectly exchange heat over at least a portion of their lengths with said means ( 12 ) for supplying preheated gas, wherein said second chamber ( 7 ) is connected to said means ( 11 ) for evacuating hydrogen-rich effluent, wherein said means ( 12 ) for supplying preheated gas comprises an annular chamber that is essentially coaxial with said jacket, and said second chamber ( 7 ) is essentially coaxial with said jacket and comprises a first essentially adiabatic zone that is linked to linking means ( 8 ) and a second zone that exchanges heat with said means ( 12 ) for supplying preheated gas.