Methods for injecting catalyst into a polymerization reactor

Details Methods for injecting catalyst into a polymerization reactor Methods for injecting catalyst into a polymerization reactor

2007-06-26

2007-06-26

Rabago, Roberto (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S124200, C526S160000, C526S170000, C526S351000, C526S919000

Reexamination Certificate

active

10668479

ABSTRACT:
A polymerization process and a catalyst delivery system are provided. For example, a polymerization process is described, including providing a conduit having a catalyst inlet, a first propylene stream inlet located downstream of the catalyst inlet, and a second propylene stream inlet located downstream of the first propylene stream inlet, the conduit being operably connected to a polymerization vessel, introducing a catalyst to the conduit through the catalyst inlet, and passing the catalyst through the conduit to the polymerization vessel. The process may further include introducing a first propylene stream to the conduit to provide a mixed catalyst stream downstream of the catalyst inlet. The process may additionally include stopping the flow of the catalyst passing through the conduit, introducing a second propylene stream to the conduit through the second propylene stream inlet, removing a section of the conduit, and replacing the removed section of the conduit with a different conduit section. The catalyst delivery system may include a conduit having a catalyst inlet, a first propylene stream inlet and a second propylene stream inlet located downstream of the first propylene stream inlet, the conduit being operably connected to a polymerization vessel and having a removable portion, the second propylene stream inlet being configured to prevent polymer from passing from the polymerization vessel into the conduit during conduit maintenance.

REFERENCES:
patent: 2508744 (1950-05-01), Carlson et al.
patent: 2852501 (1958-09-01), Richard, Jr. et al.
patent: 2956995 (1960-10-01), Knight
patent: 3440238 (1969-04-01), Foglia et al.
patent: 3779712 (1973-12-01), Calvert et al.
patent: 4268017 (1981-05-01), Cole
patent: 4585644 (1986-04-01), Divis et al.
patent: 4767735 (1988-08-01), Ewen et al.
patent: 5128294 (1992-07-01), Buehler et al.
patent: 5326855 (1994-07-01), Kahn
patent: 5432242 (1995-07-01), Baron
patent: 6051631 (2000-04-01), Hottovy
patent: 6239058 (2001-05-01), Shamshoum et al.
patent: 6245868 (2001-06-01), Agapiou et al.
patent: 6346584 (2002-02-01), Wenzel et al.
patent: 6365695 (2002-04-01), Ramamurthy et al.
patent: 6368999 (2002-04-01), Speca
patent: 6391819 (2002-05-01), Agapiou et al.
patent: 2001/0020072 (2001-09-01), Agapiou et al.
patent: 2001/0044506 (2001-11-01), Mehta et al.
patent: 0 646 603 (1994-09-01), None
patent: 0 776 691 (1997-06-01), None
patent: 2 274 110 (1994-07-01), None
patent: WO 02/06188 (2002-01-01), None

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