A recycling and recovery system and process comprising a flash gas
separator that receives a slurry comprising liquid medium and solid
polymer particles. The flash gas separator separates the diluent from the
solid polymer particles as a vapor stream comprising at least diluent and
heavies. A line receives the vapor stream from the flash gas separator.
The line leads to a heavies removal system that yields a liquid that is
relatively concentrated in heavies and a diluent vapor that is relatively
free of heavies. The liquid is passed to a heavies column while the
diluent vapor is passed to a diluent recycle chamber and then recycled to
a slurry polymerization reactor without additional treatment to remove
heavies.