Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2007-11-19
2010-11-09
Griffin, Walter D (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S125000, C208S131000
Reexamination Certificate
active
07828959
ABSTRACT:
A delayed coking process and apparatus which greatly shorten the required duration of the alternating drum fill and decoking cycles and eliminate the need to perform drum quenching, draining, unheading, hydraulic decoking, reheading, pressure testing, and warming procedures in the decoking cycle. In the inventive system, the decoking cycle preferably comprises simply a steamout stage and a coke product draining procedure. The coke product produced in the coking drums is a hot, solid, flowable material from which heat can be recovered for preheating the coker feed and/or producing steam.
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Brown Dennis D.
Fellers Snider Blankenship Bailey & Tippens, P.C.
Griffin Walter D
Robinson Renee
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