NOVELTY - Conversion device for converting hydrocarbon-containing solid material into a resultant hydrogen-containing gas, comprises an acceleration/gasification tube (12), including a first expansion nozzle, an acceleration tube, and a heat source; and a diffuser (14) including a second expansion nozzle connected to a second end of the acceleration tube for receiving the resultant hydrogen-containing gas.    USE - For converting hydrocarbon-containing solid material into a resultant hydrogen-containing gas, for use in combustion or petrochemical processes.    DETAILED DESCRIPTION - Conversion device for converting hydrocarbon-containing solid material into a resultant hydrogen-containing gas, comprises a gas supply supplying hydrocarbon-containing gas; a solid supply supplying hydrocarbon-containing solid; a solid injector capable of dispersing the hydrocarbon-containing solid into the hydrocarbon-containing gas, to form a hydrocarbon mixture; an acceleration/gasification tube, including a first expansion nozzle for expanding and accelerating the hydrocarbon mixture, where the first expansion nozzle has an intake side and a discharge side, and where the intake side is connected to the solid injector to receive the hydrocarbon mixture from the solid injector, an acceleration tube having a first and a second end, where the first end is connected to the discharge side of the first expansion nozzle, and a heat source heating the acceleration tube, and thus heating the hydrocarbon mixture within the acceleration tube, to convert a portion of the hydrocarbon mixture to the resultant hydrogen-containing gas; a diffuser including a second expansion nozzle connected to the second end of the acceleration tube for receiving the resultant hydrogen-containing gas; and gas evacuating mechanism connected to the diffuser, capable of rapidly evacuating the resultant hydrogen-containing gas from the diffuser, to maintain a constant flow through the acceleration/gasification tube and diffuser.    DESCRIPTION OF DRAWING(S) - The figure is a perspective view, showing the central components of the conversion device.    Mixer (10)    Acceleration/gasification tube (12)    Diffuser (14)    Solids inlet (16)    Gas inlet (18)