Effects of and Strategies for Handling Delays

All of the previous problems are aggravated by the roller coaster -like swings of the flue gas exit temperature changing a recuperator s output air preheat, and possibly damaging the recuperator, especially if lowest bidder favoritism has resulted in an induced draft fan of inadequate pressure and volume. The life of that fan also may be shortened. 

Warning Do not count on any continuous furnace always running at a continuous rate. Every furnace, oven, dryer, heater, boiler, and incinerator has to start up from cold or cool down from hot occasionally therefore, designers and operators should build in flexibilities that will avoid damage to equipment and product during noncontinuous situations. 

Thirty min before, lower top and bottom heat zone setpoints to 2250 F (1204 C)  

Ten min before the mill is to resume production, raise soak zone setpoints to normal  

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