Long-Term Materials Test Program: materials exposure test plan

Technical Report · Tue Dec 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/5390608· OSTI ID:5390608

The Long Term Materials Test Program is designed to identify promising corrosion resistant materials for coal-fired gas turbine applications. Resistance of materials to long term accelerated corrosion will be determined through realistic PFB environmental exposure of candidate turbine materials for up to 14,000 hours. Selected materials also will be evaluated for their ability to withstand the combined erosive and corrosive aspects of the PFB effluent. A pressurized fluidized bed combustor facility has been constructed at the General Electric Coal Utilization Research Laboratory at Malta, New York. The 12-inch diameter combustor will burn high sulfur coal with moderate-to-high chlorine and alkali levels and utilize dolomite as the sulfur sorbent. Hot gas cleanup is achieved using three stages of cyclone separators. Downstream of the cylone separators, a low velocity test section (approx. 30 ft/s) capable of housing 180 pin specimens 1/4'' diameter has been installed to assess the corrosion resistance of the various materials at three different temperatures ranging from 1300 to 1600/sup 0/F. Following the low velocity test section is a high velocity test section consisting of four cascades of airfoil shaped specimens, six specimens per cascade. This high velocity test section is being used to evaluate the combined effects of erosion and corrosion on the degradation of gas turbine materials at gas velocities of 800 to 1400 ft/s. This report summarizes the materials selection and materials exposure test plan for the Long Term Materials Test.

• Research Organization: General Electric Co., Schenectady, NY (USA). Energy Systems Programs Dept.
• DOE Contract Number: AC21-79ET15457
• OSTI ID: 5390608
• Report Number(s): DOE/ET/15457-1111; ON: DE82013322
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
CHEMICAL REACTIONS
COATINGS
COMBUSTION PRODUCTS
COMBUSTORS
CORROSION
CORROSION RESISTANCE
EROSION
FLUIDIZED-BED COMBUSTORS
GAS TURBINES
HOT GAS CLEANUP
MACHINERY
MATERIALS
MATERIALS TESTING
PLANNING
PROTECTIVE COATINGS
PURIFICATION
TEST FACILITIES
TESTING
TURBINES
TURBOMACHINERY