Dual pressure recovery boiler
AssigneeThe Babcock & Wilcox Company
InventorsJames K. Graves, Melvin J. Albrecht, Steven R. Osborne
Life of this patent
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Abstract
A dual pressure boiler system has a bottom furnace that operates as a low pressure natural circulation steam generating system and a top furnace that operates as a high pressure natural circulation steam generating system. The low pressure natural circulation steam generating system has a low pressure steam drum, a first pump for providing feed water to the low pressure steam drum, and a low pressure superheater fluidly connected to the low pressure steam drum. The high pressure natural circulation steam generating system has a high pressure steam drum, a second pump for providing feed water to the high pressure steam drum, and a high pressure superheater fluidly connected to the high pressure steam drum.
Claims14
A dual pressure boiler system comprising:
- a bottom furnace that operates as a low pressure natural steam generating system having a low pressure steam drum, a first pump for providing feed water to the low pressure steam drum, and a low pressure superheater fluidly connected to the low pressure steam drum;
- and a top furnace that operates as a high pressure natural steam generating system having a high pressure steam drum, a second pump for providing feed water to the high pressure steam drum, a high pressure superheater fluidly connected to the high pressure steam drum, and a tertiary air port wherein the bottom furnace is located below the tertiary air port.
Dependencies are inferred from the claim text.