Hydrogen effect on remaining life of hydroprocessing reactors
Old vintage 2.25Cr-1Mo steels used for high-temperature/pressure hydroprocessing reactors have a high potential for temper embrittlement. The cracks caused by hydrogen embrittlement (HE) have been experienced in a stainless steel overlay and base metal of hydroprocessing reactors. In this paper, the temper embrittlement behavior during long-term service is discussed using the results of isothermal temper embrittlement tests up to 30,000 h of exposure. HE susceptibility of base metals, i.e., the threshold stress intensity factor K/sub IH/ and hydrogen-assisted crack growth rate behavior are also discussed. Based on the experimental data obtained, the remaining life assessment of a 2.25Cr-1Mo steel hydroprocessing reactor is analyzed from knowledge of HE.
- Research Organization:
- Japan Steel Works, Ltd., Chatsumachi 4, Muroran, Hokkaido (JP)
- OSTI ID:
- 6560086
- Journal Information:
- Corrosion (Houston); (United States), Vol. 44:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HYDROGEN GENERATORS
SERVICE LIFE
STAINLESS STEELS
CRACK PROPAGATION
HYDROGEN EMBRITTLEMENT
CHEMICAL REACTORS
CHROMIUM
CHROMIUM-MOLYBDENUM STEELS
EXPERIMENTAL DATA
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
MOLYBDENUM
ALLOYS
CHEMICAL REACTIONS
DATA
ELEMENTS
EMBRITTLEMENT
GAS GENERATORS
HIGH ALLOY STEELS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
METALS
NUMERICAL DATA
STEELS
TRANSITION ELEMENTS
080100* - Hydrogen- Production
360103 - Metals & Alloys- Mechanical Properties