Fluidized bed reactors for post-processing powdered carbon

A system including a fluidized-bed reactor, comprising:

• a gas feed source configured to flow a gas-phase mixture into an interior of the fluidized-bed reactor;
• a gas inlet valve coupled with and in fluid communication with the gas feed source, the gas inlet valve configured to regulate the flow of the gas-phase mixture into the interior of the fluidized-bed reactor;
• a gas-solid separator positioned upstream of the gas inlet valve within the fluidized-bed reactor;
• an energy source configured to generate a plasma-phase mixture responsive to electromagnetic excitation of the gas-phase mixture, the plasma-phase mixture formed in a plasma region adjacent to or within the interior of the fluidized-bed reactor;
• a pressure control assembly configured to adjust one or more of a pressure or a velocity of at least some of a plurality of carbon nano-particulates within the interior of the fluidized-bed reactor;
• and
• an energy management apparatus external to the fluidized-bed reactor, the energy management apparatus configured to control energetic excitement of the gas-phase mixture.