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Steam preheaters

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430017
EISBN: 978-1-62708-253-2
... of the economizer, is further utilized for preheating the air before supplying it to the combustion chamber. 2.3 How Supercritical and Ultra-Supercritical Thermal Power Plants Function The efficiency of conventional fossil fuel or coal-fired power plants is mainly governed by the steam temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430001
EISBN: 978-1-62708-253-2
... by preheating the high-pressure boiler feed water using extracted heat from the steam recycled by the low-pressure turbine. Boiling of water at saturation temperature to produce steam as a result of addition of latent heat. Heating steam from saturation temperature to a higher temperature, called...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490001
EISBN: 978-1-62708-340-9
... through a cooling tower provides the cooling water needed to condense the steam exiting from the LP turbine. Combusted gases from the boiler are passed over more heat exchangers to preheat the incoming air to the boiler, are cleaned in scrubbers, and then are allowed to escape into the environment through...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820077
EISBN: 978-1-62708-339-3
... at the fusion line. Source: Ref 23 Improper PWHT can, however, lead to corrosion failures. Example 2 describes failure of type 430 tube-to-header welds that failed in a heat recovery steam generator because of problems associated with PWHT. Example 1: Leaking Welds in a Ferritic Stainless Steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820115
EISBN: 978-1-62708-339-3
... for elevated-temperature applications such as steam turbines, jet engines, gas turbines, and pressure-containment applications including steam piping and steam generator reheater and super-heater tubing used in fossil fuel power plants Modified versions of type 410, for example, type 410S (UNS S41008...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... be most cost-effective to replace the steam lines downstream of the attemperator and reevaluate the methods used for ensuring the proper chemistry of the boiler feedwater. Future repairs should ensure complete crack removal and full penetration welds using proper preheat and interpass temperatures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490383
EISBN: 978-1-62708-340-9
... with advanced steam plants and their respective solutions. The discussion covers the selection of materials on a component-specific basis for boilers as well as steam turbines. boilers material selection steam turbines General Requirements Increasing the efficiency of power plants can result...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900125
EISBN: 978-1-62708-350-8
... stainless steel was accomplished using the pulsed plasma nitriding process. The workpiece design called for an operational service temperature up to 645 °C (1200 °F) and the ability to perform in a highly corrosive and superheated steam environment. The workpiece had previously been nitrided using ammonia...
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 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
... lower all free CO 2 to a nondetectable level. Mechanical scrubbers and atomizers are also developed as deaerators. Here, the deaeration is accomplished by disintegration of preheated feedwater into small droplets by mixing it with the incoming steam flow. The incoming steam flow atomizes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030209
EISBN: 978-1-62708-282-2
... applied in numerous water treatment processes within a refinery, such as in cooling water and steam generation systems. Typical applications for refinery corrosion inhibitors Table 1 Typical applications for refinery corrosion inhibitors Unit Process stream Filming inhibitor Neutralizer...
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 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
..., such as carburizing, nitriding, and steam tempering. This discussion deals primarily with aspects of neutral hardening of tool steels. Heat transfer with fluidized-bed furnaces is particularly good and offers characteristics approaching those of molten salt bath furnaces. Heating properties of the fluidized bed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860007
EISBN: 978-1-62708-338-6
... loading five wound and cured parts into a conveyor system Curing Ovens There are various types of high-volume production curing ovens. These can be convection heated using gas or electricity ( Fig. 2.14 ), internal mandrel oil heating ( Fig. 2.15 ), or internal mandrel steam heating. The ovens...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
... , which are rubber-toughened epoxy resins with high resistance to crazing and cracking in service. It is advisable not to heat these types of repairs to over 200 °F (95 °C), as moisture in the laminate could cause a steam pressure delamination problem that would require a much more extensive repair...
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 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460107
EISBN: 978-1-62708-285-3
... the liquid nitrogen to a gas. This type of vaporizer requires no energy input to convert the liquid to a gas, instead relying on the high temperature difference between the ambient air and the cryogenic nitrogen. Various other types of vaporizers using fans, steam, or electric energy for enhanced...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
... oil, which can contaminate the charge and drive off all moisture, adding unwanted hydrogen to the bath, and, if enough water is present, causing a steam explosion when charged into the furnace. Cupola Melting Cupolas are vertical shaft furnaces used for melting cast iron. Although similar...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
..., oxidation, distortion, and combinations of these as modified by environment. Elevated-temperature problems are real concerns in industrial applications such as boilers, steam and gas turbine parts, containers in contact with molten metal, heat-treating furnaces and equipment, cement mills, incinerators...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030292
EISBN: 978-1-62708-282-2
... ). Ideally, equipment made from steels that have become temper embrittled should be preheated to above 120 °C (250 °F) before pressurization following a shutdown. Temper embrittlement is caused by the segregation of residual steel elements to the grain boundaries, and this greatly reduces...