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A-USC steam boilers

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Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 247-255, October 25–28, 2004,
... Abstract Components in ultrasupercritical steam (USC) boilers will operate under significantly more severe conditions than current subcritical and supercritical steam boilers. Existing construction rules for power boilers lack design guidance or criteria to assess the adequacy of designs...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 198-212, August 31–September 3, 2010,
... with the steam temperatures anticipated in an operating A-USC boiler, steamside oxidation tests have been performed at 650°C, 750°C and 800°C on coupons in slowly flowing atmospheric pressure steam. 4,000 hour tests have been completed at each of the temperatures listed above, along with a 10,000 hour exposure...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 41-52, October 22–25, 2013,
... Abstract The United States Department of Energy (U.S. DOE) Office of Fossil Energy and the Ohio Coal Development Office (OCDO) have been the primary supporters of a U.S. effort to develop the materials technology necessary to build and operate an advanced-ultrasupercritical (A-USC) steam boiler...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 690-701, October 11–14, 2016,
... Abstract The United States Department of Energy Office of Fossil Energy and the Ohio Coal Development Office (OCDO) have led a U.S. consortium tasked with development of the materials technology necessary to build an advanced-ultra-Supercritical (A-USC) steam boiler and turbine with steam...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 230-241, October 22–25, 2013,
... Abstract Inconel alloy 740/740H (ASME Code Case 2702) is an age-hardenable nickel-based alloy designed for advanced ultrasupercritical (A-USC) steam boiler components (superheaters, reheaters, piping, etc.). In this work, creep testing, beyond 40,000 hours was conducted a series of alloy 740...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1059-1070, October 22–25, 2013,
... Abstract Ultrasupercritical (USC) steam boiler and heat recovery steam generator (HRSG) technology is constantly evolving to improve efficiency and reduce emissions. Currently, temperatures are pushing beyond the capabilities of even the most advanced ferritic steels with some applications...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 1-11, October 11–14, 2016,
.../corrosion behavior of advanced alloy systems, and developing fabrication practices for use of these materials in an A-USC plant. The use of advanced steam cycles, with steam temperatures up to 1400°F (760°C) , can increase the efficiency of coal-fired boilers from an average of 35% efficiency (current...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 284-295, October 15–18, 2024,
... temperatures for higher cycle efficiency, leading to A-USC plant efficiency over 47% HHV at 1400°F (760°C) steam temperature. The work by the U.S. DOE/OCDO A-USC Steam Boiler and Turbine Materials Consortia from 2001 through September 2015 was focused primarily on lab-scale and pilot-scale materials testing...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 131-142, October 22–25, 2013,
... at the temperatures and pressures associated with advanced ultrasupercritical (A-USC) steam conditions (100,000 h at 100 MPa and 760°C), precipitation-strengthened nickel-based alloys are required for the superheater and reheater tubing in A-USC boilers. Two alloys were considered to have potential...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1487-1499, October 21–24, 2019,
... of NEDO. A pressurized thick wall pipe is being tested in a 700℃ furnace to check the material degradation of an actual sized component. A-USC coal power plants boilers material degradation steam temperature superheaters thermal efficiency turbine casing turbine rotors valves Joint EPRI...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 24-40, October 22–25, 2013,
... A-USC Net Thermal Efficiency 46 48% HHV Boiler Steam Turbine Biomass Co-Firing CO2 Recovery Oxyfuel Exhaust Gas 25MPa, 600 Boiler Steam Turbine USC Net Thermal Efficiency 42% HHV Figure 3 700deg-C class advanced USC (A-USC) 26 In the case study, we checked existing coal power plants in Japan...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 60-73, October 22–25, 2013,
... temperature requires that the materials for the boiler pressure parts and steam turbine be upgraded to high-nickel alloys that are more expensive than alloys typically used in existing PC units. This paper explores the economics of A-USC units operating between 595°C and 760°C (1100°F to 1400°F) with no CO 2...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 325-341, August 31–September 3, 2010,
.... In addition to the efficiency improvement, biomass co-firing and CO2 recovery will be considered to reduce CO2 emissions further. 35MPa, 700 A-USC Net Thermal Efficiency 46 48% HHV Boiler Steam Turbine Biomass Co-Firing CO2 Recovery Oxyfuel Exhaust Gas 25MPa, 600 Boiler Steam Turbine USC Net Thermal...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1204-1214, October 21–24, 2019,
... conditions. In this paper, we show the results of the A-USC steam turbine development obtained by the project. A-USC power plants boiler component test nickel base alloys power plants steam turbines turbine casing turbine rotation test turbine rotors Joint EPRI 123HiMAT International...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1476-1486, October 21–24, 2019,
... A-USC consortium through 2015 comprised laboratory scale and pilot scale materials testing. [8] This included installation of air-cooled probes and steam-cooled loops, both of which operated within existing coal-fired utility-scale boilers to evaluate fire side corrosion resistance, and steam side...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 326-335, October 11–14, 2016,
... to manufacture high temperature reheater outlet header of A-USC boiler with parameters 620 /653 /653 . Keywords: 653 reheat steam, HR6W, 617B, material performance INTRODUCTION Tianji power plant which is Chinese first 660 MW/ 605 °C / 623 °C USC boiler designed by SBWL put into operation in December 2013...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 86-97, October 22–25, 2013,
... provide a means to better handle the exfoliation of steam side oxidation where distribution and removal can be improved. The higher feedwater temperature from A-USC turbine cycles makes it difficult to achieve low boiler outlet gas temperature entering the air heater. The soot blowing steam requirements...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 53-64, August 31–September 3, 2010,
... of the boiler and steam turbine. The use of nickel alloys which cost significantly more than ferritic steels on a per kg basis is the primary reason for the higher boiler and steam turbine costs. The cost of the A-USC boiler and steam turbine systems was 26% more than the cost of those systems for the SCPC...
Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 165-176, October 25–28, 2004,
... Abstract The construction of highly efficient, coal-burning Ultra Supercritical (USC) boiler systems to operate with steam temperatures up to 760°C (1400°F) and with steam pressures up to 35 MPa (5000 psi) will require the use of advanced high temperature, high strength materials. As part...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 513-522, October 21–24, 2019,
... Abstract Development of the advanced USC (A-USC) boiler technology has been promoted in recent years, which targets 700°C steam condition. HR6W (Ni-23Cr-7W-Ti-Nb-25Fe) and HR35 (Ni-30Cr-6W-Ti-15Fe) have been developed for A-USC boiler tubes and pipes. The former alloy is mainly strengthened...