The above embodiment has described the use of the vapor produced in the final evaporation stage, but also vapor generated in other evaporation stages may be used, if {HEAD ~ the properties} of the vapor are suitable for {TAIL ~ the purpose} 
are suitable for
The above embodiment has described the use of the vapor produced in the final evaporation stage , but also vapor generated in other evaporation stages may be used , if { HEAD ~ the properties } of the vapor are suitable for { TAIL ~ the purpose }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL