Process for producing polyethylene

Details Process for producing polyethylene Process for producing polyethylene

2005-04-28

2010-10-19

Cheung, William K (Department: 1796)

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

Synthetic resins

Polymerizing in tubular or loop reactor

C526S352000, C422S132000

Reexamination Certificate

active

07816465

ABSTRACT:
Process and apparatus for continuously producing olefin polymers in a slurry phase reactor in a hydrocarbon diluent or liquid monomer. The process comprises continuously withdrawing from the slurry phase reactor a polymer slurry containing polymer and a fluid phase, which contains hydrocarbons and optionally hydrogen, and concentrating the slurry with a self-cleaning screen by removing a part of the fluid phase to provide a concentrated slurry. The openings of the screen, which can have a planar or cylindrical configuration, are smallest at the inflow surface of the screen and increases towards the outflow surface. By the present invention, the need for service and maintenance is significantly reduced.

REFERENCES:
patent: 5326835 (1994-07-01), Ahvenainen et al.
patent: 1 415 999 (2004-05-01), None
patent: 1 415 999 (2004-05-01), None

Affiliated with

Also associated with

Rating

Process for producing polyethylene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing polyethylene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing polyethylene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4191466