Process and system for removing heavies from diluent...

Details Process and system for removing heavies from diluent... Process and system for removing heavies from diluent...

2006-08-08

2006-08-08

Teskin, Fred (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Removing and recycling removed material from an ongoing...

C526S064000, C526S067000, C526S068000, C528S501000

Reexamination Certificate

active

07087685

ABSTRACT:
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.

REFERENCES:
patent: 5455314 (1995-10-01), Burns
patent: 5565174 (1996-10-01), Burns
patent: 6045661 (2000-04-01), Verser
patent: 6559247 (2003-05-01), Kufeld et al.

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