A comparison of the Ahlstrom Pyroflow{reg_sign} pressurized circulating fluidized bed and competing pressurized bubbling fluidized bed combustion technologies

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:245028

Provol, S J ^[1]; Matousek, W F ^[1]

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1. Ahlstrom Pyropower, Inc., San Diego, CA (United States)

Pressurized Circulating Fluidized Bed (PCFB) and Pressurized Bubbling Fluidized Bed (PBFB) both show great promise for clean, efficient, and coeffective generation of electricity during the next century. Ahlstrom Pyropower, Inc. (API) has been involved in the development of the Ahlstrom PYROFLOW{reg_sign} PCFB technology since 1986. API operates a 10 MWth PCFB Test Facility at its Hans Ahlstrom Laboratory in Karhula, Finland. To date, more than 6,000 hours of operation and testing of the PCFB with various coals have been completed using the PCFB Test Facility. A project to demonstrate the PCFB system in the 120 MWe scale, is in the engineering phase under the DOE Clean Coal 3 Technologies Program. That demonstration is scheduled to start operation in 1998. This will provide a market for competing options for users of Pressurized Fluidized Bed Systems in the future. This paper will present a brief description of the PCFB process, followed by a comparison of certain key aspects of the PCFB and PBFB technologies. These aspects include the effects of gas residence time and solids/gas contacting on combustion efficiency and emissions, complexity of fuel feed systems, pressure parts arrangement and erosion considerations, component sizes and plant space requirements, and plant operation and load following.

• OSTI ID: 245028
• Report Number(s): CONF-950522--; ISBN 0-7918-1305-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AIR POLLUTION CONTROL
AMMONIA
CIRCULATING SYSTEMS
COAL
COMPARATIVE EVALUATIONS
FLUID INJECTION
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FUEL FEEDING SYSTEMS
LIMESTONE
LOAD MANAGEMENT
NITROGEN OXIDES
PARAMETRIC ANALYSIS
PERFORMANCE
PRESSURIZATION
SIZE
SORBENT INJECTION PROCESSES
SULFUR DIOXIDE
TEMPERATURE CONTROL
TIME DEPENDENCE