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oil-ash corrosion

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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004156
EISBN: 978-1-62708-184-9
... and application of protective cladding or coatings. coating fireside corrosion fuel ash corrosion water wall corrosion THE PRESENCE OF CERTAIN IMPURITIES in coal and oil is responsible for the majority of fireside corrosion experienced in utility boilers. In coal, the primary impurities are sulfur...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
... or hot water. Power boilers using pulverized coal, fuel oil, or natural gas as the fuel are used in thermal power plants to produce steam for generation of electricity. They are very large in size and are operated at high pressure and temperature in order to produce high-pressure, high-temperature...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... in tube metal temperatures. In a superheater or a reheater, such temperature increases can lead to premature creep failures, dissimilar-metal weld failures, and accelerated ash corrosion or oxidation. In furnace walls, deposits may also lead to hydrogen damage (additional information is provided...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004124
EISBN: 978-1-62708-184-9
... Corrosion Fireside corrosion Low-temperature Waterwall Coal ash Oil ash Lack of quality control Maintenance cleaning damage Chemical excursion damage Materials damage Welding defects Source: Ref 7 Stress Rupture Failures in Boiler Environments Stress and temperature...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003806
EISBN: 978-1-62708-183-2
... of preventing oil ash corrosion is to remove vanadium, alkali metals, and sulfur chemically from the fuel. However, this approach can be costly. Certain magnesium and calcium compounds have been found to be effective in reducing corrosion rates. These compounds form high-melting-point complexes with oil ash...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006411
EISBN: 978-1-62708-192-4
... expensive than other synthetic oils, and are mainly used in computer head-disk applications. Chemical Structures of Additives Additives are used to improve lubricant properties and performance ( Ref 5 , 6 ). The functions of common additives include anti-wear, corrosion inhibitor, detergents...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006413
EISBN: 978-1-62708-192-4
... influences the lubrication regime of lubricated parts. Additives provide different functions in the oil including maintaining component surface cleanliness, minimizing wear, and maintaining oil properties within acceptable levels. Lubricant additive-derived ash in the exhaust stream is an important issue...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004150
EISBN: 978-1-62708-184-9
... of coal by the use of a gasifier before the combustion; as indicated previously, the removal of impurities, including ash, is easier, but the corrosion problems in the boiler are replaced by the corrosion issues in the gasifier. The corrosion issues in the systems used to remove the impurities are also...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... temperatures; redesigning affected sections to modify heat transfer; and adding CaSO 4 or MgSO 4 to bind SO 3 to a less-corrosive form. Fireside corrosion also can occur in oil-fired boilers. Oil ash corrosion is believed to be a catalytic oxidation of the material by reaction with vanadium pentoxide...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005932
EISBN: 978-1-62708-166-5
... Abstract This article describes various quenchants, namely, water and inorganic salt solutions, polymers (polyvinyl alcohol, polyalkylene glycol, polyethyl oxazoline, polyvinyl pyrrolidone and sodium polyacrylates), quench oils, and molten salts, which are used for heat treatment of ferrous...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004211
EISBN: 978-1-62708-184-9
... was needed, and with a cost-savings over conventionally used nickel alloys. For nonaqueous conditions involving exposure to high-temperature sulfidic or naphthenic crude oil environments, resistance to corrosion has been mainly related to simply the sum of the chromium and molybdenum concentration ( Ref...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004159
EISBN: 978-1-62708-184-9
... and the deposition of soot ash can moderate the corrosive effects of deposited acids. In conventional boiler plants, the risk areas normally include the posteconomizer flue gas handling sections such as air heaters, ducting and precipitators, induced-draft fans, and chimney stacks. Dew-point corrosion problems...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003843
EISBN: 978-1-62708-183-2
... Abstract Portland cement concrete has low environmental impact, versatility, durability, and economy, which make it the most abundant construction material in the world. This article details the types and causes of concrete degradation. Concrete can be degraded by corrosion of reinforcing steel...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.9781627081665
EISBN: 978-1-62708-166-5
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004137
EISBN: 978-1-62708-184-9
... Pollution Control Equipment ( Orlando, FL ), Dec 1984 • Phull B.S. and Lee T.S. , “The Effect of Fly Ash and Fluoride on Corrosion Behavior in a Model SO 2 Scrubber,” paper presented at the International Corrosion Forum, National Association of Corrosion Engineers , 25–29 March...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
...-generation plants (coal, oil, natural gas, and nuclear), pulp and paper mills, waste-incineration sites, numerous industrial chemical processes, diesel engines (power, land vehicle, and maritime), and gas turbine (land-based, marine shipboard, and aircraft). Predicting corrosion of metals and alloys...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005708
EISBN: 978-1-62708-171-9
... deposits such as alkali salts (KCl, NaCl) ( Ref 13 ). This may be further intensified by SO 2 , which may cause sulfidation of the alkali chlorides, liberating HCl or Cl 2 gas close to the metal surface ( Ref 11 ). Besides corrosion, biomass fly ash often shows high erosivity due to its content...
Book Chapter

Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001274
EISBN: 978-1-62708-170-2
... because all phosphating baths contain depolarizers or oxidizers that react with the hydrogen as it is formed and render it harmless to the metal. In some instances, however, zinc-phosphate processes, intended for use with rust-inhibiting oils for corrosion resistance or manganese-phosphate treatments, can...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... materials with the aid of models and equations. It presents three examples of erosive wear failures, namely, abrasive erosion, erosion-corrosion, and cavitation erosion. abrasive erosion brittle materials cavitation erosion ductile materials erosion erosion corrosion EROSION...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003703
EISBN: 978-1-62708-182-5
... boiler superheaters 850–900 1560–1650 Fuel ash corrosion Gas turbine blades corrosion to 950 to 1740 Sulfates, chlorides, oxidation, ash Waste incinerators—superheaters 480 895 Chlorination, sulfidation, oxidation, molten salts Fiberglass manufacturing recuperators 1090 1995...