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furnace waterwalls

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080259
EISBN: 978-1-62708-304-1
... unit) retrofitted with a low NO x burner system with overfire air ports. The waterwall tube suffered accelerated wastage after the furnace was retrofitted with NO x burner system. Courtesy of Welding Services Inc. Fig. 10.20 Scanning electron micrograph (backscattered electron image...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080335
EISBN: 978-1-62708-304-1
... problems that can occur in boilers burning municipal solid waste (MSW). It describes corrosion mechanisms associated with different environments and alloys. It also discusses corrosion protection methods for furnace waterwalls and superheater tubes in waste-to-energy boilers. References References...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080321
EISBN: 978-1-62708-304-1
... furnaces fired with low-grade fuels. This chapter provides an overview of fireside or oil-ash corrosion and the problems it can cause in utility power boilers and petrochemical refinery furnaces. It explains how oil-ash corrosion affects waterwalls, superheaters, and reheaters as well as metal tube...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080359
EISBN: 978-1-62708-304-1
... Chlorine 0.2–2 Nitrogen 0.04–0.2 Others 0.1–0.3 Source: Ref 5 The compositions of major gas species detected in gas samples collected from the different locations of the lower furnace waterwall between the secondary and tertiary air ports Table 13.2 The compositions of major gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430017
EISBN: 978-1-62708-253-2
... or web of HP steel tubes known as waterwalls or waterwall tubes, filled with water and about 55 to 65 mm (2 to 2.5 in.) in diameter. The pulverized coal-hot air mixture is air-blown into the furnace through burners located at corners or along the walls, as per the specific design of the boiler...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430001
EISBN: 978-1-62708-253-2
... in the combustion chamber. The combustion takes place at 1300 to 1700 °C (2370 to 3090 °F) and the heat generated is transferred to the feedwater that flows through the waterwall tubes that form the walls of the furnace. The feedwater consists of condensate or condensed steam returned from the processes and make-up...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.9781627083041
EISBN: 978-1-62708-304-1
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080005
EISBN: 978-1-62708-304-1
... Fig. 3.5 Different oxidation kinetics. Source: Ref 11 Abstract Abstract Many metallic components, such as retorts in heat treat furnaces, furnace heater tubes and coils in chemical and petrochemical plants, waterwalls and reheater tubes in boilers, and combustors and transition ducts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080003
EISBN: 978-1-62708-304-1
... a corrosion-resistant weld overlay instead of replacing it with a new construction. This approach has been adopted in the boiler industry in recent years to address the severe corrosion problems with the waterwalls of boilers in waste-to-energy boilers, coal-fired boilers, basic oxygen furnace hoods in steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... The waterwall tube of an HRSG boiler failed during operation. The boiler tripped on furnace pressure high protection. It was noticed that one waterwall riser tube (goose neck) of the furnace east wall had a window opening at a 200 mm (8 in.) radius bend location ( Fig. 6.56 ). The opening was approximately...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430087
EISBN: 978-1-62708-253-2
... include headers or steam pipes, while thin-walled sections are grouped as furnace-wall or waterwall tubes, superheater (SH) or reheater (RH) tubes, and economizer tubes ( Ref 4.1 ). A header is a thick-walled pipe penetrated by a number of tubes. These heavy-section components have to handle creep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
... steam, which is then delivered to a steam turbine. A schematic illustration of a boiler is shown in Fig. 5.1 . Coal, oil, or natural gas with preheated air is burned in the furnace. The combustion gases flow up through the furnace and evaporate the water into steam inside the furnace waterwall tubes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080379
EISBN: 978-1-62708-304-1
... (a) 595 (1100) 542 (79) 934 (135) 48 66 (a) Heat treated at 705 °C (1300 °F)/16 h/furnace cool to 605 °C (1120 °F)/32 h followed by air cool. Source: Ref 53 Fig. 14.40 Transmission electron micrograph showing long-range ordered phases [Ni 2 (Cr,Mo)] in a dark field image using...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080001
EISBN: 978-1-62708-304-1
... in the waterwalls of the boilers at the tube metal temperatures of approximately 260 to 315 °C (500 to 600 °F). This book is intended primarily for engineers and metallurgists who are concerned with high-temperature materials problems in the following industries: aerospace/gas turbine, chemical processing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430314
EISBN: 978-1-62708-253-2
... Fig. 6.126 Erosion and longitudinal rupture of boiler tube due to misaligned soot blower Fig. 6.127 (a) Eroded surface of a screen tube near bend. (b) SEM image of area eroded due to furnace gases containing fly ash, 100× Fig. 6.131 Superheater tube cut by steam leaking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080235
EISBN: 978-1-62708-304-1
... of Tube Experience in Ethylene and Olefins Pyrolysis Furnaces: T-5B-6 Task Group Report , Corrosion/81 , NACE 2. Jakobi D. and Gommans R. , Typical Failures in Pyrolysis Coils for Ethylene Cracking , Mater. Corros. , Vol 54 ( No. 11 ), 2003 , p 881 10.1002/maco.200303731 3...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.9781627083409
EISBN: 978-1-62708-340-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490001
EISBN: 978-1-62708-340-9
...</xref>) Table 1.1. Property requirements and materials of construction for fossil steam plant components ( Ref 5 ) Component Major property requirements Typical materials Boiler Waterwall tubes Tensile strength, corrosion resistance, weldability C and C-Mo steels Drum Tensile strength...