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coal-fired boiler

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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
... Corrosion The lower furnace of a coal- or oil-fired boiler is essentially a large enclosed volume where the combustion of fossil fuel, as well as the cooling of the combustion products, takes place. The furnace enclosures are made of water-cooled tubes, generally in a welded membrane construction...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003630
EISBN: 978-1-62708-182-5
... Abstract This article provides a discussion on the mechanisms of wear and their interactions with gaseous corrosion. The wear mechanisms include abrasive, erosive, fretting, and sliding. The measurement of degradation on combustion walls in coal-fired boilers is discussed. The article concludes...
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Published: 30 January 2024
Fig. 27 Long-term creep failure of a superheater tube removed from a coal-fired boiler after decades of service. Bulging, wall thinning to a “knife-edge,” and formation of a thick black oxide scale are all indicative of failure due to long-term creep. The scale is in inches. More
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
... as necessary on an annual basis. Example 4: Creep Failure of a 2.25Cr-1Mo Steel Superheater Tube This example concerns a creep failure taken from a radiant superheater. There have been no reported creep failures in nearly 17 years of service. The boiler is coal fired. Operating drum pressure is 18 MPa...
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...
Image
Published: 01 January 2006
Fig. 23 Corrosion rate in a combustion environment versus time as monitored using electrochemical methods is plotted with a key process variable. Fireside corrosion of boiler tubes in coal-fired utilities and waste incineration plants is an expensive and difficult problem to deal with. Special More
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0004050
EISBN: 978-1-62708-183-2
... (a.u). Corrosion-Resistant Coatings in Boilers Aggressive environments exist in boilers burning biofuels, especially annual crops and the green parts of the trees, which contain plenty of potassium and chlorine. Besides biofuels, waste-based fuels and high-chlorine coal cause accelerated...
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
... is controlling combustion to reduce NO x emissions. In the case of a large, coal-fired utility boiler, for example, if the coal is combusted in the boiler at low excess air, or even at substoichiometric air in the vicinity of the fuel nozzles, with the balance of the air added higher in the boiler...
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
... and the unheated downcomers with the steam drum at the top of the boiler unit ( Ref 3 ). There are several types of boilers used in land-based and sea-based military applications: integral-furnace naval boilers, auxiliary package boilers, and waste heat boilers ( Ref 2 ). Boilers may be fired by using coal...
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
... SCC not only in the low-temperature heat exchangers, but also in the hot boiler casings. Dry Flue Gas Handling Systems in Conventional Combustion Systems A conventional coal-fired power generation boiler is illustrated in Fig. 5 ; the locations of items prone to dew-point corrosion...
Book Chapter

Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003683
EISBN: 978-1-62708-182-5
... on application (a) (a) Applications include coal- and oil-fired boilers and black liquor evaporators; corrosive media would include ash from coal-fired boilers, corrosive condensates, and exhaust from black liquor evaporators. Weather Resistance Indicators of the weather resistance of porcelain...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004133
EISBN: 978-1-62708-184-9
... Experience of Coal Fired Supercritical Sliding Pressure Operation Boiler and Application for Overseas Utility,” PGE2003BLR, http://www.bhk.co.jp/english/4tech/contents/pge2003paper_blr.pdf , Babcock-Hitachi K.K. , 2003 , accessed 20 Dec 2004 6. Jonas O. , “Effective Cycle...
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
... probes that were fabricated from various alloy steels and installed in a coal-fired steam boiler system ( Ref 10 ). It is evident from both Fig. 14 and Fig. 15 that, although they can be used in these environments, alloy steels do not perform as well as stainless steels. Fig. 14 Effect...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004153
EISBN: 978-1-62708-184-9
.... In these systems, combustion gases generated by the firing of coal are sent to scrubbing equipment where SO 2 is removed by reaction with an absorbing slurry, solution, or reactant. At one time there were over 250 flue gas desulfurization (FGD) processes under consideration, but wet lime/limestone scrubbing...
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
.... , Computational Study of Solid Particle Erosion for a Single Tube in Cross Flow , Wear , Vol 240 , 2000 , p 95 – 99 4. Lee B.E. , Fletcher C.A.J. , and Behnia M. , Computational Prediction of Tube Erosion in Coal Fired Power Utility Boilers , J. Eng. Gas Turbines Power (Trans. ASME...
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
... in boilers are employing thicker tubes of the same material; shielding tubes with clamp-on protectors; coating with thermal sprayed, corrosion-resistant materials; blending coals to reduce corrosive ash constituents; replacing tubes with higher-grade alloys or coextruded tubing; lowering final steam outlet...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004144
EISBN: 978-1-62708-184-9
... of metallurgical condition, and the environmental variable that affects the corrosion behavior of the metallic materials are discussed. Corrosion in Fossil and Alternative Fuel Industries The three types of fossil fuel power plants primarily used by the electric power industry are coal-fired steam...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
.... The analyst cannot differentiate primary and secondary causes without this understanding. Thorough materials characterization is usually the first step, but is certainly not the only step, in a failure investigation. Example 1: Rupture of a Power Plant Waterwall Tube A coal-fired power plant...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... Tube A coal-fired power plant experienced a forced outage when a front waterwall tube ruptured. Examination of the fishmouth rupture confirmed a damage mechanism of short-term overheating, which occurs when either water or steam flow is inadequate in high-temperature tubing, or when tubing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
.... , and Behnia M. , Computational Prediction of Tube Erosion in Coal Fired Power Utility Boilers , J. Eng. Gas Turbines Power (Trans. ASME) , Vol 121 , Oct 1999 , p 746 – 750 10.1115/1.2818536 5. Drennen J.F. and McGowan J.G. , Prediction of Flyash Erosion in Convective Pass...