Ultrasupercritical and advanced ultrasupercritical power plants

Yamamoto, Kenjiro; Fukuda, Masafumi; Hanatani, Atsuhiro

doi:10.1016/b978-0-12-820360-6.00007-2

Cited by 3 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, conventional thermal power plants face upgrading upgraded to advanced ultrasupercritical (AUSC) ones. The AUSC plants are the only solution to generate electricity in thermal power plants in the most efficient way with minimum environmental pollution [1]. The nuclear power technology also faces upgrading to safer and more economical Generation IV reactors [2].…”

Section: Introductionmentioning

confidence: 99%

High-temperature oxidation behavior of the as-cast and cold-rolled alumina-forming austenitic steels at 800 °C

Zhu,

Zhang,

et al. 2024

Preprint

View full text Add to dashboard Cite

The high-temperature oxidation behavior and oxidation mechanism of as-cast and cold-rolled (20%CR and 60%CR) AFA steels in dry air at 800°C were studied. The phase composition, morphology, microstructure, element distribution, and oxidation kinetics of oxidized steel were characterized and analyzed. The results show that the mass gains of both as-cast and cold-rolled samples increase rapidly within the first 100 h. During the subsequent long-term high-temperature oxidation process, the mass gains of as-cast and 60%CR samples slowly increase, while the mass gain of 20%CR AFA steel fluctuates greatly. The oxide layer comprises an outer oxide layer rich in (Fe,Cr) oxide and an inner oxide layer rich in Al2O3. The reduction in the oxidation resistance of AFA steel under small deformation is because defects such as dislocations introduced by deformation provide more channels for the diffusion of atoms, while the reason for the improvement under large deformation is that more δ-ferrite and precipitated B2-NiAl phase can promote the rapid formation of Al2O3 film and reduce further oxidation of the matrix. However, because of the formation of aluminum oxide film on the surface of the samples, both as-cast and cold-rolled AFA steels exhibit complete oxidation resistance at 800°C.

show abstract

Section: Introductionmentioning

confidence: 99%

High-temperature oxidation behavior of the as-cast and cold-rolled alumina-forming austenitic steels at 800 °C

Zhu,

Zhang,

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Comparative analysis of hydrogen-rich syngas production from various feedstocks using bubbling fluidized bed

Taipabu,

Viswanathan,

Mariyappan

et al. 2024

Process Safety and Environmental Protection

View full text Add to dashboard Cite

A Review on the Material Development and Corresponding Properties for Power Plant Applications

Patil

Paliwal

Mishra

2022

Materials Performance and Characterization

View full text Add to dashboard Cite

Over the past decade, increased demand for energy generation at affordable rates and in a clean state has been the driving force for material development for energy generation. In developing countries, coal-fired thermal power plants are the major source of electricity generation. However, coal-fired plants induce a higher carbon footprint and contribute to greenhouse gas emissions. Hence, several strategies have been formulated to mitigate environmental pollution while maintaining high energy output. This review comprehensively presents the historical material development process that led to an increase in the efficiency of a coal-fired power plant. Candidate material identification and application, essential alloying elements, and their impact on service life are comprehensively reviewed. Adapting the ultra-supercritical (USC) and advanced ultra-supercritical (A-USC) power generation technology requires the development of new alloys that can withstand harsh operating conditions (700–725°C and 25–35 MPa), which demands the replacement of conventional materials (ferritic/austenitic steel) with better ones. The candidate alloys should be evaluated across several key issues such as high-temperature material response to loading, creep strength, high-temperature oxidation, and component fabricability. The evaluation of creep strength data suggests that nickel-based alloys like Inconel alloy 282 are preferred because of the high stability of the γ′ phase. Moreover, at higher temperatures, nickel-based alloys are preferred over ferritic/austenitic steel alloys because of their superior corrosion resistance. The fireside corrosion and high-temperature oxidation resistance are governed by the formation of different oxide layers depending on the temperature, pressure, and alloy content. Furthermore, the weldability of different candidate alloys is discussed in detail, along with the microstructural evolution in the heat-affected zone. This review also focuses on the cost of constructing a greenfield USC/A-USC power plant. Lastly, a perspective on new alloy development for A-USC/USC application is presented, and the microstructure and property relationships of these alloys are discussed.

show abstract

Ultrasupercritical and advanced ultrasupercritical power plants

Cited by 3 publications

References 20 publications

High-temperature oxidation behavior of the as-cast and cold-rolled alumina-forming austenitic steels at 800 °C

High-temperature oxidation behavior of the as-cast and cold-rolled alumina-forming austenitic steels at 800 °C

Comparative analysis of hydrogen-rich syngas production from various feedstocks using bubbling fluidized bed

A Review on the Material Development and Corresponding Properties for Power Plant Applications

Contact Info

Product

Resources

About