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July 15, 2010 at 8:57 pm #5539
Nor Syamrin Wagirin
we run the furnace outlet temperature at 910F earlier in the cycle, within 1hr after drum switching, to avoid too much firing in the furnace. our coker is a two drum coker, which we experienced some temperature swing during drum switching, causing the furnace inlet temperature to drop. As the coke drum heats up, the furnace COT is increased to its normal operating temperature of 920F.