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fluidized-bed boilers

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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
..., intended to reduce NOx emissions, accelerates tube wall wastage. It also covers circumferential cracking in furnace waterwalls, thermal fatigue cracking induced by waterlances and water cannons, superheater-reheater corrosion, and erosion in fluidized-bed boilers. coal-fired boilers combustion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430001
EISBN: 978-1-62708-253-2
... Abstract Boilers are engineered systems designed to convert the chemical energy in fuel into heat to generate hot water or steam. This chapter describes boiler applications and types, including firetube boilers, watertube boilers, electric boilers, packaged boilers, fluidized bed combustion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080335
EISBN: 978-1-62708-304-1
... today are based on the fluidized-bed technology. The mass-burning unit uses a mechanical stoker to feed the fuel onto a grate where the fuel is combusted. For most RDF units, the fuel is blown into the furnace sidewalls through an RDF burner with a fuel-distribution impeller ( Ref 3 ). Most RDF units...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... Abstract This chapter discusses the effects of corrosion on boiler tube surfaces exposed to water and steam. It describes the process of corrosion, the formation of scale, and the oxides of iron from which it forms. It addresses the primary types of corrosion found in boiler environments...
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 erosive ash, which is usually indicated by high silica content ( Ref 5 ). For fluidized-bed coal-fired boilers, flue gas streams are laden with not only fly-ash but also sands from the bed. The convection pass tubes in these boilers are subject to erosion attack. Waste-to-energy (WTE) boilers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030117
EISBN: 978-1-62708-282-2
... shows carbon steel heat-transfer tubes in a fluidized-bed combustor. The tubes have been polished through the action of particles of sand impacting at a velocity of approximately 1.8 m/s (6 ft/s). The black appearance of these tubes is due to the oxide scale, which has been polished (that is, thinned...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080201
EISBN: 978-1-62708-304-1
... mineral and chemical feedstock ( Ref 1 ), petrochemical processing ( Ref 2 ), fossil-fired boilers ( Ref 2 ), petroleum refining ( Ref 3 ), coal gasification ( Ref 4 , 5 ), waste incineration ( Ref 6 , 7 ), fluidized-bed coal combustion ( Ref 8 – 10 ), and oil-fired boilers. This chapter reviews...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350125
EISBN: 978-1-62708-315-7
... the surface to be protected by either electrostatic spray or fluidized-bed deposition. The metal being protected is usually preheated at the time of application, and after application it is reheated to an elevated temperature (generally from 150–315 °C, or 300–600 °F). The specific time/temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910363
EISBN: 978-1-62708-250-1
... stainless steels Steam power and cogeneration Waterwell tubes 2 1 4 % Cr-1% Mo steel Fluidized bed combustor tubes 2 1 4 % Cr-1% Mo steel Waste heat boiler tubes Carbon steel Economizer and air preheater tubes 2 1 4 % Cr-1% Mo steel Superheater tubes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030292
EISBN: 978-1-62708-282-2
... United States, the American National Standards Institute/American Society of Mechanical Engineers (ANSI/ASME) Boiler and Pressure Vessel Code, section VIII, which covers unfired pressure vessels, is used by most industries and fabricators. It is usually mandatory that the code be followed in process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080147
EISBN: 978-1-62708-304-1
... react readily with these metals to form halide salts. Corrosion reactions under these conditions are to be discussed in later chapters dealing with high-temperature corrosion in gas turbines, coal-fired boilers, oil-fired boilers, waste-to-energy boilers, black liquor recovery boilers, and so forth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... 25 ). Although pack boriding is the most widely used boriding process, it is important to note that other thermochemical boriding techniques are also used. These include paste boriding, liquid (salt-bath) boriding, gas boriding, plasma boriding, and fluidized-bed boriding. These alternative...