Laboratory Exposure Loop for Simulation of Fossil Fuel Power Plant Superheater Operation Conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193247%3A_____%2F24%3AN0000002" target="_blank" >RIV/60193247:_____/24:N0000002 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/24:00378813

Výsledek na webu

<a href="https://www.confer.cz/metal/2024/4935-laboratory-exposure-loop-for-simulation-of-fossil-fuel-power-plant-superheater-operation-conditions" target="_blank" >https://www.confer.cz/metal/2024/4935-laboratory-exposure-loop-for-simulation-of-fossil-fuel-power-plant-superheater-operation-conditions</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Laboratory Exposure Loop for Simulation of Fossil Fuel Power Plant Superheater Operation Conditions

Popis výsledku v původním jazyce

The article deals with the first results from the so-called laboratory exposure loop after 10,000 h operation. This loop is an experimental setup that allows the selected material to be exposed to the conditions that prevail in the boiler of a coal-fired power plant or incineration site. Among these conditions are elevated temperature, corrosive environment, and internal pressure of water steam. In this case, the loop (consisting of two bends and six weld joints) was made from SUPER 304H (X10CrNiCuNb18-9-3) superheater tubes. Before the experiment, the welded loop was filled with water, so steam with a pressure of 23 MPa was generated when heated to 550 °C. In addition, small-scale, stripe-shaped specimens were placed inside the loop and then exposed to steam during exposure. The loop was placed partly out of the furnace, thus not fully heated, and covered up with the power plant ash. At weekly intervals, the cooler part of the loop (the one covered up with the ash) was sprayed with water to induce thermal shock. After exposure of both loops (one for 5000 h, the other for 10,000 h), their bodies were cut, and mechanical tests (i.e. tensile and Charpy impact tests) were performed. The microstructure of the straight parts bends and weld joints of the loop tubes was investigated 1and documented using light optical microscopy (LOM) and scanning electron microscopy (SEM).

Název v anglickém jazyce

Laboratory Exposure Loop for Simulation of Fossil Fuel Power Plant Superheater Operation Conditions

Popis výsledku anglicky

The article deals with the first results from the so-called laboratory exposure loop after 10,000 h operation. This loop is an experimental setup that allows the selected material to be exposed to the conditions that prevail in the boiler of a coal-fired power plant or incineration site. Among these conditions are elevated temperature, corrosive environment, and internal pressure of water steam. In this case, the loop (consisting of two bends and six weld joints) was made from SUPER 304H (X10CrNiCuNb18-9-3) superheater tubes. Before the experiment, the welded loop was filled with water, so steam with a pressure of 23 MPa was generated when heated to 550 °C. In addition, small-scale, stripe-shaped specimens were placed inside the loop and then exposed to steam during exposure. The loop was placed partly out of the furnace, thus not fully heated, and covered up with the power plant ash. At weekly intervals, the cooler part of the loop (the one covered up with the ash) was sprayed with water to induce thermal shock. After exposure of both loops (one for 5000 h, the other for 10,000 h), their bodies were cut, and mechanical tests (i.e. tensile and Charpy impact tests) were performed. The microstructure of the straight parts bends and weld joints of the loop tubes was investigated 1and documented using light optical microscopy (LOM) and scanning electron microscopy (SEM).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/TK05020109" target="_blank" >TK05020109: Hodnocení životnosti přehříváků tepelných elektráren</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

33rd International Conference on Metallurgy and Materials. Conference Proceedings

ISBN

978-80-88365-21-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

221-226

Název nakladatele

Tanger Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

24. 5. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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