Halogen mediated production of hydrogen and carbon from hydrocarbons

A pyrolysis system using a halogen, the system comprising:

• a reactor, wherein the reactor is configured to contact a hydrocarbon feedstock with a reactant containing a halogen to produce hydrogen, hydrogen halide, and a solid product, wherein the solid product comprises carbon;
• a halogen regeneration unit, wherein the halogen regeneration unit is configured to receive at least a portion of the hydrogen halide from the reactor and generate the halogen;
• and
• a recycle line fluidly coupling the reactor and the halogen regeneration unit configured to pass at least a portion of the halogen from the halogen regeneration unit to the reactor.

A reaction process comprising:

• introducing a hydrocarbon feedstock into a reactor countercurrent to a moving bed of solid material moving through a reaction zone in the reactor;
• introducing a halogen into the feedstock within the reactor to contact the halogen with the hydrocarbon feedstock;
• producing solid products, hydrogen, and hydrogen halide in response to contacting the halogen with the hydrocarbon feedstock;
• depositing the solid products on the moving bed of the solid material;
• and
• passing the hydrogen and hydrogen halide out of the reactor.