Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2007-06-06
2009-11-10
Griffin, Walter D (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C208S047000, C208S130000
Reexamination Certificate
active
07615144
ABSTRACT:
A thermal cracking process that employs (1) a sinusoidal conduit in the convection section of a thermal cracking furnace, (2) a cross-over conduit, and/or (3) a transfer conduit that contains at least one bend fitting, at least one bend fitting carrying a protective layer comprising a steel carrier and carbide pellets composed of submicron hard particles cemented with a metal binder.
REFERENCES:
patent: 6117493 (2000-09-01), North
patent: 6743961 (2004-06-01), Powers
patent: 7019187 (2006-03-01), Powers
patent: 2002/0043479 (2002-04-01), Heyse et al.
patent: 2005/0261530 (2005-11-01), Stell et al.
Devakottai Bala S.
Kiballa Anthony R.
Mistry Pinakin B.
Swanson John A.
Equistar Chemicals LP
Griffin Walter D
MacDonald Roderick W.
Robinson Renee
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