Corrosion and degradation of materials in the CONOCO DOAL CO/sub 2/-Acceptor coal-gasification plant. [More than 30 alloys]
Corrosion specimens were exposed to the operating environments in the CONOCO COAL (CO/sub 2/-Acceptor) coal gasification plant between 1974 and 1977. The plant operated on the CO/sub 2/-Acceptor principle. Metal and refractory specimens were exposed in the gasifier and the regenerator vessels. Metal specimens only were exposed in the gasifier and regenerator quench towers. Exposure times ranged from 740 h to 2990 h. In the regenerator, poor performance was exhibited by the alloys HC-250, HL-40, and aluminized 310 and 800, while Alloy 671 proved to be inadequate in all cases. In comparison, the gasifier environment was less severe for most materials. Alloys 671, X, 800, and 793 gave consistently low corrosion rates of <20 mpy. Austenitic stainless steels, titanium, Alloy 825, and 20Cb-3 experienced only limited corrosion losses in both quench systems. Refractory performance studies showed that materials containing in excess of 60% alumina and less than 30% porosity demonstrated resistance to the gasifier and regenerator environments. Examples are Monofrax A and Alumex P-8. A significant number of the more resistant refractories, such as Wasp 60 and Chemal 111, were phosphate bonded.
- Research Organization:
- IIT Research Inst., Chicago, IL (USA)
- DOE Contract Number:
- AC05-76ET10670
- OSTI ID:
- 5324191
- Report Number(s):
- DOE/ET/10670-T1; ON: DE82006201
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALLOYS
CARBON DIOXIDE ACCEPTOR PROCESS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
COAL GASIFICATION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
DATA
EXPERIMENTAL DATA
FLUIDS
FUEL GAS
FUELS
FUNCTIONAL MODELS
GAS FUELS
GASES
GASIFICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 671
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
METALLOGRAPHY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
PILOT PLANTS
REFRACTORIES
SNG PROCESSES
STAINLESS STEELS
STEELS
TESTING
THERMOCHEMICAL PROCESSES