System design study to reduce capital and operating costs and bench-scale testing of a circulating-bed AFB advanced concept. Phase 1, Task 2: interim report on Task 1 results

Technical Report · Thu Aug 01 04:00:00 EDT 1985

OSTI ID:5625198

Fraley, L D; Hsiao, K H; Lee, M M; Lin, Y Y; Sadhukhan, P; Schlossman, M; Schreiner, W C; Solbakken, A

The M.W. Kellogg Company has had under consideration for many years a combustor design involving a circulating fluid bed of ash, coal, lime/limestone sorbent, and calcium sulfate. In a previous study for the Department of Energy, M.W. Kellogg performed a design analysis for an atmospheric fluidized-bed combustor whose performance should significantly exceed conventional FBC operation performance, i.e., the Kellogg CFBC. The analysis conclusively showed that the Kellogg CFBC met or exceeded performance criteria for advanced atmospheric FBC's. This is superior to those FBC's currently in the market place. The objective of the study presented here was to reduce capital and operating costs of the Kellogg CFBC, configured into an industrial boiler system of 150,000 pounds per hour steaming capacity. This report presents the design optimization, detailed designs, and cost estimates required to compare CFBC with conventional AFB. The results show the Kellogg CFBC to be a very economical concept. Technically, the Kellogg CFBC can meet or exceed all of the design criteria established for an advanced AFBC. Its compact design resembles an FCC unit in structure and operation. By staged combustion, NO/sub x/ emissions are controlled by the reducing atmosphere and sulfur absorption enhanced in the improved kinetics of the H/sub 2/S-CaO reaction. The unique combustor/riser design keeps the boiler tubes from exposure to corrosive combustion gases, solving the erosion and corrosion problems existing in conventional bubbling-bed AFB. 7 refs., 28 figs., 17 tabs.

• Research Organization: Kellogg (M.W.) Co., Houston, TX (USA)
• DOE Contract Number: AC21-84MC21173
• OSTI ID: 5625198
• Report Number(s): DOE/MC/21173-2062; ON: DE86001637
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
AIR POLLUTION ABATEMENT
CAPITALIZED COST
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
CIRCULATING SYSTEMS
COAL
COMBUSTION
COMBUSTORS
COMPUTERIZED SIMULATION
CORROSION
COST
DESIGN
ECONOMICS
ENERGY SOURCES
ENGINEERING
EROSION
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUEL-AIR RATIO
FUELS
LIMESTONE
MATERIAL BALANCE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OPERATING COST
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
POLLUTION ABATEMENT
PRESSURE DROP
ROCKS
SEDIMENTARY ROCKS
SIMULATION
SIZE
STAGED COMBUSTION
THERMOCHEMICAL PROCESSES