§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3763830A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for burning sulfur containing fuels

Assignee: United States Department of the Interior
•
Filing: 1973-01-24
•
Granted: 1973-10-09
•
Expires: 1993-01-24
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Combustion apparatus for the removal of sulfur oxides from fuels containing sulfur. A first and a second fluidized bed boiler having heat exchange surfaces, that burn the sulfur fuels are positioned adjacent each other with the second bed having less heat exchange surface than the first. Each bed has solid particulate sulfur acceptors that are circulated between the two beds. Heat exchange wall members between the beds semi-isolate them from each other such that there is little or no mixing of the gaseous combustion products from each boiler. The circulation between beds may be accomplished by ports in the exchange wall below the top of the fluidized beds. The end result is the gas emitted to the atmosphere from the beds after additional processing is depleted in sulfur oxides.

Inventors

  • 👤 E Robinson
  • 👤 S Ehrlich
  • 👤 J Bishop

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 04:11
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/005; F23C6/00; F23C6/04; F23C6/042

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 20 words
The apparatus of claim 1 wherein said second fluidized bed boiler is positioned continguous to said first fluidized bed boiler.
Claim 2
Dependent Claim 45 words
The apparatus of claim 2 wherein said means to prevent mixing of gaseous combustion products produced in the two boilers comprises a heat exchange wall member extending from a point below the top level of the fluidized beds continuously to the top of said boilers.
Claim 3
Dependent Claim 43 words
The apparatus of claim 3 wherein said means to provide circulation of particulate material making up the fluidized beds between said first and second boilers comprise ports in said heat exchange wall member at a location below the top of the fluidized beds.
Claim 4
Dependent Claim 20 words
The apparatus of claim 4, wherein said ports are at a level in the lower hAlf of the fluidized beds.

References Cited (Backward Citations)

US2842102A Cited
US3495654A Cited
US3387590A Cited
US3508506A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-08 1977-04-09 1977-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-08 1981-04-09 1981-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-08 1985-04-09 1985-10-09 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag