The characteristics of a modern oxy-fuel power plant
作者： Janusz Kotowicz , Sebastian Michalski , Mateusz Brzęczek
DOI: 10.3390/EN12173374
关键词:
摘要: This paper presents the thermodynamic and economic analyses of four variants a supercritical oxy-type plant. These differed in terms air separation units (ASU, variants: V1—cryogenic; V2—hybrid; equipped with three-end (V3a) or four-end (V3b) high-temperature membrane) boilers (V1 V3a—lignite-fired fluidized-bed; V2 V3b—hard-coal-fired pulverized-fuel). The gross power steam turbine unit (STU) was 600 MW. live reheated parameters were 650 °C/30 MPa 670 °C/6.5 MPa, respectively. influence ASUs’ operating on auxiliary rate boiler efficiency (V3a V3b only) studied. for maximum net then determined. decrease compared to reference plant (with classic fluidized-bed pulverized-fuel boiler) fluctuated range 7.2 (V3b)–11.2 (V1) p.p. An analysis waste heat utilization performed (fuel drying—V1 V3a; STU steam-water exchangers replacing). Thus, decreases 4.3 (V3b)–10.2 showed that order be economically viable, CO2 emission cost should greater than 42.2 22.0 EUR/MgCO2.
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