{TAIL ~ A preferred embodiment} includes providing the gaseous stream to pyrolysis reactor along with {HEAD ~ a carbon source} such as coke 
{ TAIL ~ A preferred embodiment } includes providing the gaseous stream to pyrolysis reactor along with { HEAD ~ a carbon source } such as coke
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH