Pressurized fluidized-bed combustion program

Technical Report · Fri Sep 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/6780524· OSTI ID:6780524

The goal of the Pressurized Fluidized Bed Combustion (PFBC) Program is to develop a scientific and engineering data base by the 1990's so that the private sector can demonstrate and commercialize PFB systems as a replacement for oil and gas-fired combustion systems within the utility market and as a more economical and environmentally acceptable coal-fired system for the utility market. PFBC involves burning coal in a bed of limestone (calcium carbonate) or dolomite (calcium magnesium carbonate) inside a furnace operated at elevated pressure and with bed temperatures normally in the range of 1400{degree}F--1700{degree}F. The bed material (sorbent) is fluidized (suspended) by the injection of air at the bottom of the bed. Sulfur dioxide (SO{sub 2}), released during combustion of the coal, reacts with the sorbent (limestone or dolomite) and forms a solid sulfate that can be discharged from the system as a dry solid waste along with the coal ash. Advantages offered over other competing technologies for utility applications include high-efficiency, lower capital and operating costs (therefore lower-cost electricity), superior environmental performance, ability to burn a wide variety of fuels (including high-sulfur coals) and modularity (with no great cost penalty for loss of economies of scale). In addition, PFBC has potential as a retrofit technology capable of pollution control and capacity boosting for existing coal-fired power plants, as well as a repowering technology for existing oil and gas-fired steam plants. 3 tabs.

• Research Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (USA). Office of the Deputy Assistant Secretary for Coal Technology
• Sponsoring Organization: DOE/FE
• OSTI ID: 6780524
• Report Number(s): DOE/FE-0180P; ON: DE90012711
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
29 ENERGY PLANNING, POLICY, AND ECONOMY
294001 -- Energy Planning & Policy-- Coal
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
CONTROL
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
HOT GAS CLEANUP
MANAGEMENT
MARKET
MATERIALS
NATIONAL ORGANIZATIONS
OXIDATION
POLLUTION CONTROL
PROGRAM MANAGEMENT
PURIFICATION
RESEARCH PROGRAMS
THERMOCHEMICAL PROCESSES
US DOE
US ORGANIZATIONS