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Waste Heat Recovery Boiler for Billet Reheating FurnaceNecessityThe steel rolling process consumes a tremendous amount energy,Website:http://www.chinawasteheatboiler.com, for which the average thermal efficiency is only 20% ~ 30%. Around 70% ~ 80% of the entire energy input required for such process has traditionally been lost in the environment, and at least 30% of this lost energy is carried by flue gas. Especially for steel rolling mills without a regenerative combustion system, it is important to recover the waste heat from the flue gas coming out of the billet reheating furnace. Design In