Distillation: processes – thermolytic – Feed other than coal – oil shale or wood
Reexamination Certificate
2007-03-12
2010-06-15
Bhat, N. (Department: 1797)
Distillation: processes, thermolytic
Feed other than coal, oil shale or wood
C201S028000, C208S131000, C202S239000
Reexamination Certificate
active
07736470
ABSTRACT:
Described herein are methods and mechanisms for laterally dispensing fluid to a coke drum in a predictable and maintainable manner that alleviates thermal stress. In one embodiment, the methods and mechanisms utilize a split piping system to dispense fluid through two or more inlets into a spool that is connected to a coke drum and a coke drum bottom deheader valve. A combination of block valves and clean out ports provides a more effective means to clean the lines and allows fluid to be laterally dispensed in a controllable and predictable manner. The fluid is preferably introduced to the spool in opposing directions toward a central vertical axis of the spool at equal but opposing angles ranging from minus thirty (−30) to thirty (30) degrees relative to a horizontal line laterally bisecting the spool. Alternatively, however, fluid can be introduced to the spool tangentially.
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Chen Te-Hung
Eppig Christopher P.
Healy Timothy M.
Massenzio Scott F.
Mosley Robert W.
Barrett Glenn T.
Bhat N.
ExxonMobil Research and Engineering Company
Keen Malcolm D.
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