Utilization of heat recovered from compressed gases in an oxy-combustion power unit to power the Organic Rankine Cycle module
Abstract
Oxy-combustion technology is a zero-emission technology with great potential for commercial use in the nearfuture. Application of this technology is linked with high energy losses in oxygen production and preparation ofcaptured CO2 for transport to a storage place. In the analyzed oxy-combustion power plant with cryogenic airseparation unit the compression of gases is responsible for most of the energy consumption. Compressed gasesare sources of significant amounts of waste heat energy. Effective use of this energy is crucial to reducing theefficiency drop caused by additional installations. One method extensively examined in the literature for effectiveutilization of medium-grade and low-grade waste heat energy is the application of the Organic Rankine Cycle(ORC), which uses a low-boiling medium to produce additional electric power. The paper presents the results ofanalyses of the use of heat recovered from three sources identified in the oxy-combustion unit to power the ORCmodule. This includes heat from gases in the compression installations within the air separation unit, the CO2processing unit and the CO2 compression installation. Thermodynamic and economic analyses were performedto assess the potential investment.References
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[2] Chmielniak T.: Rola różnych rodzajów technologii w osiągnięciu celów emisyjnych w perspektywie do 2050. Rynek Energii 92(1) (2011) 3-9.
[3] Andrzej Ziębik, Paweł Gładysz: Analysis of cumulative energy consumption in an oxy-fuel combustion power plant integrated with a CO2 processing unit. Energy Conversion and Management 87 (2014) 1305-1314.
[4] Kotowicz J., Michalski S.: Efficiency analysis of a hard-coal-fired supercritical power plant with a four-end high-temperature membrane for air separation. Energy 64 (2014) 109-119.
[5] Kotowicz J, Balicki A.: Enhancing the overall efficiency of a lignite-fired oxyfuel power plant with CFB boiler and membrane-based air separation unit. Energy Conversion and Management 80 (2014) 20-31.
[6] Pei P., Barse K., Gil A. J., Nasah J.: Waste heat recovery in CO2 compression. International Journal of Greenhouse Gas Control 30 (2014) 86–96.
[7] Fu C., Anantharaman R., Gundersen T.: Optimal integration of compression heat with regenerative steam Rankine cycles in oxy-combustion coal based power plants. Energy (2015) http://dx.doi.org/10.1016/j.energy.2015.03.023
[8] Brzęczek M., Bartela Ł.: Optimizing management of the condensing heat and cooling of gases compression in oxy block using of a genetic algorithm. Archives of Thermodynamics 34 (4) (2013) 199- 214.
[9] Rączka P., Wójs K.: Projektowanie kondensacyjnego wymiennika ciepła odpadowego. Rynek Energii 111 (2) (2014) 87-92.
[10] Bartela Ł., Skorek-Osikowska A., Kotowicz J.: Thermodynamic, ecological and economic aspects of the use of the gas turbine for heat supply to the stripping process in a supercritical CHP plant integrated with a carbon capture installation. Energy Conversion and Management 85 (2014) 750-763.
[11] Bartela Ł., Skorek-Osikowska A., Kotowicz J.: Economic analysis of a supercritical coal-fired CHP plant integrated with an absorption carbon capture installation. Energy 64 (2014) 513-523.
[12] Job M., Bartela Ł., Skorek-Osikowska A.: Analysis of the use of waste heat in an oxy-combustion power plant to replace steam cycle heat regeneration. Journal of Power Technologies 93 (3) (2013) 33-141.
[13] Skorek-Osikowska A. Bartela Ł., Kotowicz J., Job M.: Thermodynamic and economic analysis of the different variants of a coal-fired, 460 MW power plant using oxy-combustion technology. Energy Conversion and management 76 (2013) 109-120.
[14] Łukowicz H., Kochaniewicz A.: Analysis of the use of waste heat obtained from coal-fired units in Organic Rankine Cycles and for brown coal drying. Energy 45 (2012) 203-212.
[15] Mikielewicz D., Wajs J., Bajor M., Barcicka K.: Współpraca bloku gazowo-parowego z obiegiem ORC. Rynek Energii 110 (1) (2014) 116-122.
[16] Shahinfard S., Beyene A.: Regression comparison of organic mediums for low grade heat recovery operating on Rankine cycle. Journal of Power Technologies 93 (4) (2013) 257- 270.
[17] Wei D., Lu X., Lu Z., Gu J.: Performance analysis and optimization of organic Rankine cycle (ORC) for waste heat recovery. Energy Conversion and Management 48 (2007) 1113-1119.
[18] Quoilin S., van den Broek M., Declaye S., Dewallef P., Lemort V.: Techno-economic survey of Organic Rankine Cycle (ORC) systems. Renewable and Sustainable Energy Reviews 22 (2013) 168–186.
[19] Bartela Ł., Brzęczek M.: Analysis of the use of cooling heat of compressed gas to supply the rankine cycle with a low-boiling medium. Rynek Energii 113 (4) (2014) 130-135.
[20] Mikielewicz D., Mikielewicz J.: Analytical method for calculation of heat source temperature drop for the Organic Rankine Cycle application. Applied Thermal Engineering 63 (2014) 541-550.
[21] Ziółkowski P., Mikielewicz D., Mikielewicz J.: Increase of power and efficiency of the 900 MW supercritical power plant through incorporation of the ORC. Archives of Thermodynamics 34 (4) (2013) 51- 71.
[22] GateCycle Version 5.40. Manual. GE Enter Software, LLC.
[23] Aspen Plus, Aspen Technology, Inc. 200 Wheeler Road, Burlington, Massachusetts 01803.
[24] Siddiqi M. A., Atakan B.: Binary alkane mixtures as fluids in Rankine Cycles. Proc. of ECOS 2012 - The 25th International Conference on efficiency, cost, optimization, simulation and environmental impact of energy systems, 388 – 404. June 26-29, 2012, Perugia, Italy.
[25] Astolfi M., Romano M. C., Bombarda P., Machi E.: Binary ORC (organic Rankine cycles) power plants for the exploitation of medium-low temperature geothermal sources - Part A: Thermodynamic optimization. Energy 66 (2014) 423-434.
[26] Walraven D., Laenen B., D’haeseleer W.: Minimizing the levelized cost of electricity production from low-temperature geothermal heat sources with ORCs: Water or air cooled? Applied Energy 142 (2015) 144-153.
[27] Attala L, Facchini B, Ferrara G. Thermoeconomic optimization method as design tool in gas-steam combined plant realization. Energy Conversion and Management 42 (2001) 2163-2172.
Published
2015-12-30
How to Cite
KOTOWICZ, Janusz et al.
Utilization of heat recovered from compressed gases in an oxy-combustion power unit to power the Organic Rankine Cycle module.
Journal of Power Technologies, [S.l.], v. 95, n. 4, p. 239--249, dec. 2015.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/684>. Date accessed: 22 dec. 2024.
Issue
Section
Energy Conversion and Storage
Keywords
oxy-combustion; gas compression; waste heat; heat recovery; Organic Rankine Cycle
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