A system includes a radial flow moving bed reactor configured to flow a first heated catalyst solid stream and fresh catalyst by gravity through the reactor and form a moving catalyst bed. The reactor is also configured to flow a light hydrocarbon feed stream downwards so that the light hydrocarbon feed stream flows radially inward or outward through the moving catalyst bed and contacts the first heated catalyst solid stream at a temperature sufficient to crack the light hydrocarbon feed stream to produce hydrogen and a spent catalyst stream comprising catalyst particles and solid carbon. A riser is connected to the reactor and combusts the spent catalyst stream to produce a mixture of a second heated catalyst solid stream and a heated gas effluent. A separator is connected to the reactor and the riser and separates the second heated catalyst solid stream from the heated gas effluent.

A process includes flowing a catalyst composition comprising catalyst particles into a radial flow moving bed reactor, wherein the catalyst particles move by gravity through the radial flow moving bed reactor to an exit point of the radial flow moving bed reactor, wherein the catalyst particles form a moving catalyst bed in the radial flow moving bed reactor, flowing a light hydrocarbon feed stream comprising C.sub.1 to C.sub.3 alkanes into the radial flow moving bed reactor in a manner so that the light hydrocarbon feed stream flows radially inward or radially outward through the moving catalyst bed and thereby contacts the catalyst particles under reaction conditions to produce a product effluent stream comprising a C.sub.2 to C.sub.10 hydrocarbon product and hydrogen, and flowing the product effluent stream from the radial flow moving bed reactor.

A process includes flowing a catalyst composition comprising catalyst particles into a radial flow moving bed reactor, wherein the catalyst particles move by gravity through the radial flow moving bed reactor to an exit point of the radial flow moving bed reactor, wherein the catalyst particles form a moving catalyst bed in the radial flow moving bed reactor, flowing a light hydrocarbon feed stream comprising C.sub.1 to C.sub.3 alkanes into the radial flow moving bed reactor in a manner so that the light hydrocarbon feed stream flows radially inward or radially outward through the moving catalyst bed and thereby contacts the catalyst particles under reaction conditions to produce a product effluent stream comprising a C.sub.2 to C.sub.10 hydrocarbon product and hydrogen, and flowing the product effluent stream from the radial flow moving bed reactor.