METHODS AND SYSTEM FOR FORMING CARBON NANOTUBES
Systems and a method for forming carbon nanotubes are described. A method includes forming carbon nanotubes in a first reactor, using a feed gas. The carbon nanotubes are separated from a reactor effluent to form a waste stream. The feed gas, a dry waste stream, or both, are heated with waste heat from the waste stream. The waste stream is chilled in an ambient temperature heat exchanger to condense water vapor, forming a dry waste stream.