{HEAD ~ The liquid oxygen stream} after purification by the guard bed is vaporised to form {TAIL ~ a gas stream} at 16 
is vaporised to form
{ HEAD ~ The liquid oxygen stream } after purification by the guard bed is vaporised to form { TAIL ~ a gas stream } at 16
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH