Results of u-bend stress-corrosion-cracking specimen exposures in coal-liquefaction pilot plants
Pilot plants with capacities of up to 600 tons/d are currently demonstrating the engineering feasibility of several coal liquefaction processes including Solvent Refined Coal (SRC), Exxon Donor Solvent (EDS), and H-Coal. These plants are the first step toward commercial production of synthetic fuels. Among other factors, development of the technology depends on reliable materials performance. A concern is the application of those austenitic stainless steels necessary for general corrosion resistance, because they are susceptible to stress corrosion cracking. This cracking results from tensile stresses in combination with offensive agents such as polythionic acids, chlorides, and caustics. To screen candidate construction materials for resistance to stress corrosion cracking, we exposed racks of stressed U-bend specimens in welded and as-wrought conditions at four coal liquefaction pilot plants. Results from exposures through June 1980 were described in a previous report for exposures in the SRC plants. This report summarizes the on-site test results from June 1980 through October 1981 for the two SRC pilot plants and the H-Coal and Exxon coal liquefaction pilot plants.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5414154
- Report Number(s):
- ORNL/TM-8194; ON: DE82012889
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL LIQUEFACTION PLANTS
STRESS CORROSION
EXXON LIQUEFACTION PROCESS
H-COAL PROCESS
NICKEL BASE ALLOYS
SRC PROCESS
STEELS
CRACKS
PILOT PLANTS
ALLOYS
CHEMICAL REACTIONS
COAL LIQUEFACTION
CORROSION
FUNCTIONAL MODELS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFACTION
NICKEL ALLOYS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction