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US 11,686,470 B2Granted
Natural circulation multi-circulation package boiler for steam assisted gravity drainage (SAGD) process
AssigneeThe Babcock & Wilcox Company
InventorsMelvin J Albrecht, Jason M Marshall, Jonathan B Ford, Jeremy L Remus
Life of this patent
Estimating the term…
Abstract
A boiler includes a steam drum, an intermediate drum, and a lower drum. Each drum is divided into a clean section and a concentrated section. A channel that is fluidly connected to the clean section also runs down one side of the concentrated section in the intermediate drum and the lower drum. The presence of the channels permits low-quality feedwater tubes and high-quality feedwater tubes to be arranged in parallel rows next to each other.
Claims20
A boiler, comprising:
- an intermediate drum comprising (A) a first internal divider within the intermediate drum that divides the intermediate drum into an intermediate drum clean section and an intermediate drum concentrated section, and (B) an intermediate drum channel that is fluidly connected to the intermediate drum clean section, the intermediate drum channel running adjacent a sidewall of the intermediate drum through the first internal divider to a distal end of the intermediate drum concentrated section;
- a lower drum comprising (A) a second internal divider within the lower drum that divides the lower drum into a lower drum clean section and a lower drum concentrated section, and (B) a lower drum channel that is fluidly connected to the lower drum clean section, the lower drum channel running adjacent a sidewall of the lower drum through the second internal divider to a distal end of the lower drum concentrated section;
- a furnace defined by a furnace sidewall and a baffle wall, wherein tubes in a front portion of the furnace sidewall and a front portion of the baffle wall extend between the intermediate drum channel and the lower drum channel;
- a clean section steam generating bank extending between the intermediate drum clean section and the lower drum clean section;
- and
- a concentrated section steam generating bank extending between the intermediate drum concentrated section and the lower drum concentrated section.
3 more elements
A method for using a boiler, comprising:
- receiving a boiler that comprises
- an intermediate drum comprising (A) an intermediate drum divider within the intermediate drum that divides the intermediate drum into an intermediate drum clean section and an intermediate drum concentrated section, and (B) an intermediate drum channel that is fluidly connected to the intermediate drum clean section, the intermediate drum channel running adjacent a sidewall of the intermediate drum through the intermediate drum divider to a distal end of the intermediate drum concentrated section;
- a lower drum comprising (A) a lower drum divider within the lower drum that divides the lower drum into a lower drum clean section and a lower drum concentrated section, and (B) a lower drum channel that is fluidly connected to the lower drum clean section, the lower drum channel running adjacent a sidewall of the lower drum through the lower drum divider to a distal end of the lower drum concentrated section;
- a furnace defined by a furnace sidewall and a baffle wall, wherein tubes in a front portion of the furnace sidewall and a front portion of the baffle wall extend between the intermediate drum channel and the lower drum channel;
- a clean section steam generating bank extending between the intermediate drum clean section and the lower drum clean section;
- and
- a concentrated section steam generating bank extending between the intermediate drum concentrated section and the lower drum concentrated section;
- and
- using steam generated by the boiler.
6 more elements
Dependencies are inferred from the claim text.