Radiant tubes arrangement in low NOx furnace
OwnerJames Roth, Vincent Leung +2inventors
InventorsJames Roth, Vincent Leung, Brian Doerksen, Robin McGlynn
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Abstract
System and method are disclosed for increasing the effectiveness of the lower tubes in a delayed coker furnace. The system and method involve arranging the tubes so that the lower tubes are as close to the heat source as the upper tubes. Such an arrangement allows all the tubes to have substantially the same amount of radiant flux. In some implementations, it is also possible to conform the refractory floor to the arrangement of the tubes.
Claims19
A delayed coker furnace, comprising:
- a housing having an inlet and an outlet;
- a heat source disposed in said housing, said heat source providing radiant heat for said furnace;
- and
- a plurality of substantially parallel radiant tubes connected in series for carrying feedstock from said inlet of said housing past said heat source to said outlet of said housing, said plurality of radiant tubes including a first set of radiant tubes and a second set of radiant tubes;
- wherein said first set of radiant tubes is arranged substantially vertically in said housing and said second set of radiant tubes is inset toward said heat source relative to said first set of radiant tubes.
A method of improving an efficiency of a delayed coker furnace, said furnace having a plurality of substantially parallel radiant tubes disposed therein and connected in series for carrying feedstock through said furnace, comprising:
- arranging a first set of said radiant tubes substantially vertically in said furnace;
- and
- arranging a second set of radiant tubes in said furnace beneath said first set of radiant tubes, said second set of radiant tubes being inset toward a heat source relative to said first set of radiant tubes.
An arrangement of radiant tubes in a delayed coker furnace, said radiant tubes disposed substantially parallel to each other and connected in series, comprising:
- a first set of said radiant tubes, said radiant tubes arranged adjacent to one another in a column;
- and
- a second set of radiant tubes, said radiant tubes arranged adjacent to one another beneath said first set of radiant tubes;
- wherein said second set of radiant tubes is inset toward a heat source relative to said first set of radiant tubes.
Dependencies are inferred from the claim text.