Design lessons learned at the Scrubgrass Project

Journal Article · Sat Jan 01 00:00:00 EST 1994 · Energy Engineering; (United States)

OSTI ID:6731582

Sinn, B T; Wu, S ^[1]

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1. Tampella Power Corp., Williamsport, PA (United States)

The Scrubgrass Generating Project in Scrubgrass Township, Pennsylvania, was designed to burn a wide range of waste bituminous coals in two circulating fluidized bed boilers for the production of approximately 80 MW of net electrical power. The CFB boilers were originally designed for a maximum continuous rating of 380,000 lb/hr of superheated steam at 955 F and 1,300 psig. After start-up, the boilers were modified to increase the generating capacity by 3%. The boiler operation during the start-up phase in early 1993 revealed that the fuel characteristics were substantially different from the pilot plant test fuels. Because the fuel and ash properties did not meet the expected boiler design basis, a performance short-fall resulted. Extensive boiler testing and a process optimization analysis were made to determine a viable collection that was successfully implemented to meet contract requirements and to increase the boiler maximum continuous rating. This paper describes the problem and its solution.

• OSTI ID: 6731582
• Journal Information: Energy Engineering; (United States), Vol. 91:4; ISSN 0199-8595
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
BITUMINOUS COAL
FLUIDIZED-BED COMBUSTION
FLUIDIZED BED BOILERS
PERFORMANCE
FOSSIL-FUEL POWER PLANTS
PENNSYLVANIA
ASH CONTENT
COMPILED DATA
CONSTRAINTS
MODIFICATIONS
BLACK COAL
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DATA
DEVELOPED COUNTRIES
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
MATERIALS
NORTH AMERICA
NUMERICAL DATA
OXIDATION
POWER PLANTS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
USA
014000* - Coal
Lignite
& Peat- Combustion
200104 - Fossil-Fueled Power Plants- Components