Atmospheric fluidized bed combustion advanced concept system

Technical Report · Fri May 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/7153403· OSTI ID:7153403

DONLEE Technologies Inc. is developing with support of the US Department of Energy an advanced circulating fluidized bed technology known as the Vortex{trademark} Fluidized Bed Combustor (VFBC). The unique feature of the VFBC is the injection of a significant portion of the combustion air into the cyclone. Since as much as one-half of the total combustion air is injected into the cyclone, the cross-sectional area of the circulating fluidized bed is considerably smaller than typical circulating fluidized beds. The technology is being developed for two applications: Industrial-scale boilers ranging from 20,000 to 100,000 pounds per hour steam generating capacity; and two-stage combustion in which a substoichiometric Vortex Fluidized Bed Combustor (2VFBC) or precombustor is used to generate a combustible gas for use primarily in boiler retrofit applications. This Level II analysis of these two applications indicates that both have merit. An industrial-scale VFBC boiler (60,000 lb/hr of steam) is projected to be economically attractive with coal prices as high as $40 per ton and gas prices between $4 and $5 per thousand cubic feet. The payback time is between 3 and 4 years. The 2VFBC system was evaluated at three capacities of application: 20,000; 60,000 and 100,000 lb/hr of steam. The payback times for these three capacities are 4.5, 2.1 and 1.55 years, respectively. The 2VFBC has potential applications for retrofit of existing pulverized coal-fired boilers or as a new large (utility) boiler. Pressurized operation of the 2VFBC has considerable potential for combined cycle power generation applications. Experimental development of both applications is presented here to demonstrate the potential of these two technologies.

• Research Organization: Donlee Technologies, Inc., York, PA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-87MC24216
• OSTI ID: 7153403
• Report Number(s): DOE/MC/24216-3122; ON: DE93000202
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CIRCULATING SYSTEMS
COAL
COMBUSTION
COMBUSTORS
CONCENTRATORS
CYCLONE SEPARATORS
DATA
DESIGN
DOCUMENT TYPES
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SOURCES
EQUIPMENT
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
INERTIAL SEPARATORS
INFORMATION
MATERIALS
NUMERICAL DATA
OXIDATION
PAYBACK PERIOD
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
PROGRESS REPORT
RETROFITTING
SEPARATION EQUIPMENT
STAGED COMBUSTION
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES