Corrosion in coal liquefaction plant fractionation columns. [38 materials exposed in SRC pilot plants]

Conference ·

OSTI ID:5414062

Judkins, R R; Keiser, J R; Irvine, A R; Baylor, V B

The four major operating coal liquefaction pilot plants in the United States have all experienced severe corrosion in atmospheric-pressure fractionation columns. Corrosion rates of carbon steel and 18-8 (Ni-Cr) stainless steels have been as high as 25 and 6.4 mm/year, respectively. The severity of the corrosion is related to the chlorine content of the feed coals and the operating temperature of the columns. Laboratory and pilot plant exposures of corrosion coupons permitted a ranking of alloys according to resistance to corrosion in this environment. Analyses of coal liquids identified several chlorine compounds that were transported to the fractionators and caused corrosion. We have proposed corrodent transport and corrosion mechanisms based on this work and have suggested process changes to remove the corrodent.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5414062
• Report Number(s): CONF-820510-4; ON: DE82015681
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALLOY-RA-333
ALLOYS
ALUMINIUM
CARBON STEELS
CARPENTER
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
COBALT ALLOYS
COPPER ALLOYS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
DATA
ELEMENTS
EXPERIMENTAL DATA
EXXON LIQUEFACTION PROCESS
FLUIDS
FUNCTIONAL MODELS
H-COAL PROCESS
HALOGEN COMPOUNDS
HASTELLOYS
HAYNES ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY 825
INCOLOY ALLOYS
INCONEL 600
INCONEL 625
INCONEL 671
INCONEL ALLOYS
INCONEL X750
INDUSTRIAL PLANTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFACTION
LIQUIDS
MANGANESE ALLOYS
MATERIALS
MATERIALS TESTING
METALS
MOLYBDENUM
MOLYBDENUM ALLOYS
MONEL 400
NICKEL
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUMERICAL DATA
PILOT PLANTS
SILICON ALLOYS
SRC PROCESS
SRC-II PROCESS
STAINLESS STEEL-304
STAINLESS STEEL-310
STAINLESS STEEL-316
STAINLESS STEEL-317
STAINLESS STEEL-410
STAINLESS STEELS
STEELS
TANTALUM ALLOYS
TESTING
THERMOCHEMICAL PROCESSES
TITANIUM
TITANIUM ALLOYS
TRANSITION ELEMENTS
TUNGSTEN ALLOYS