Method and process with refractory shelf for hydrodynamic...

Details Method and process with refractory shelf for hydrodynamic... Method and process with refractory shelf for hydrodynamic...

2006-09-05

2006-09-05

Nguyen, Tam M. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

C208S106000, C208S151000, C208S164000

Reexamination Certificate

active

07101474

ABSTRACT:
A shelf is incorporated into a typical FCC riser that permits the tips of the nozzles to extend past the wall of the riser while preventing the tips from promoting coke build-up and protecting the tips from erosion. The shelf can be part of an angled section that often appears in a transition zone for increasing the internal diameter of the riser to accommodate the volumetric expansion of the feed. The shelf section reduces the non-uniformity in the mixing of the catalyst and feed and minimizes backmixing of the feed injection. The shelf of this invention accomplishes these objectives without recessing the feed injectors into the riser wall which can interfere with the spray pattern.

REFERENCES:
patent: 3654140 (1972-04-01), Griffel et al.
patent: 4427538 (1984-01-01), Bartholic
patent: 4427539 (1984-01-01), Busch et al.
patent: 4479870 (1984-10-01), Hammershaimb et al.
patent: 4793913 (1988-12-01), Chessmore et al.
patent: 4822573 (1989-04-01), Timmann
patent: 4832825 (1989-05-01), Mauleon et al.
patent: 5141625 (1992-08-01), Lomas
patent: 5173175 (1992-12-01), Steffens et al.
patent: 5182085 (1993-01-01), Lomas et al.
patent: 5298155 (1994-03-01), Sabottke
patent: 5554341 (1996-09-01), Wells et al.
patent: 6042717 (2000-03-01), Radcliffe et al.
patent: 6139720 (2000-10-01), Lomas
patent: 6248297 (2001-06-01), Stine et al.
patent: 6346219 (2002-02-01), Hedrick
patent: 6652815 (2003-11-01), Sattar

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