Effect of oxidation/sulfidation on creep behavior of alloy 800
Metallic components within or immediately adjacent to gasifiers, such as gas distributors, thermowells, transfer lines, and cyclones, are subjected to particularly severe conditions of temperature, pressure, and hostile multicomponent gas environments. In addition, metallic heat exchangers/waste-heat boilers that are resistant to sulfidation, corrosion, and erosion in low- and medium-Btu gas environments are essential components in large-scale gasification schemes in both dry-ash and slagging-type gasifiers. Components of these schemes must generally be resistant to corrosion, erosion, and high-temperature creep. Refractory linings are conventionally employed to mitigate corrosion and erosion; in some cases, internal cooling has been considered a way to avoid problems associated with the interaction of high-temperature creep and fatigue. Contrary to the codes and standards that exist for vessel and piping design, no guidance in the form of a code or standard exists for internal and long-life external vessel components, especially for service in corrosive-erosive environments at elevated temperatures. The purpose of the present work is to examine the high-temperature creep behavior of Alloy 800, a high-chromium alloy that is widely used in coal conversion systems, after exposure to oxygen and oxygen/sulfur mixed-gas environments over a wide temperature range. In addition, data on the creep behavior of the alloy under various pretreatment and test exposure conditions are used to establish performance envelopes for the alloy in fossil energy applications.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 135090
- Report Number(s):
- ANL/ET/CP-85136; CONF-950908-6; ON: DE96002692; TRN: 95:008605
- Resource Relation:
- Conference: 2. international conference on heat resistant materials, Gatlinburg, TN (United States), 11-14 Sep 1995; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Materials technology for coal-conversion processes. Sixteenth quarterly report, October--December 1978
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