System Overview. During the smelting, converting and acid producing processes, large quantities of heat are liberated by the chemical reactions that are taking place. To maintain the integrity of the equipment, this heat is dissipated in the production of steam. The smelter steam system consists of units to generate steam, superheat the steam, transport the steam to the point of use, and extract energy from the steam. Steam is generated and used at two different pressure ranges. Steam in the pressure range of 820 to 870 psig is referred to as high pressure (HP) steam and steam in the 100 to 145 psig range is referred to as low pressure (LP) steam.
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Sources: Power Purchase Agreement, Power Purchase Agreement, Power Purchase Agreement