Corrosion in coal liquefaction plant fractionation columns

Journal Article · Thu Jul 01 04:00:00 EDT 1982 · SAMPE Q.; (United States)

OSTI ID:6600661

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 corrodant transport and corrosion mechanisms based on this work and have suggested process changes to remove the corrodant.

• Research Organization: Oak Ridge National Lab., TN
• OSTI ID: 6600661
• Journal Information: SAMPE Q.; (United States), Journal Name: SAMPE Q.; (United States) Vol. 13:4; ISSN SAMQA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BENCH-SCALE EXPERIMENTS
CARBON STEELS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FRACTIONATION
FUELS
HALOGEN COMPOUNDS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFACTION
LIQUIDS
MATERIALS
NICKEL ALLOYS
SEPARATION PROCESSES
STAINLESS STEEL-18-8
STAINLESS STEELS
STEELS
THERMOCHEMICAL PROCESSES