EXERGETIC OPTIMIZATION OF PHOSPHORIC ACID FACTORY POWER PLANT

Year 2017, , 1428 - 1441, 19.09.2017

Khir Tahar

https://doi.org/10.18186/journal-of-thermal-engineering.338898

Abstract

An
Energetic and Exergetic Analysis is conducted on a Steam Turbine Power Plant of
an existing Phosphoric Acid Factory. The heat recovery systems used in
different parts of the plant are also considered in the analysis. Mass, thermal
and exergy balances are established on the main components of the factory. A
numerical code is established using EES software to perform the calculations
required for the thermal and exergy plant analysis. The effects of the key
operating parameters such as steam pressure and temperature, mass flow rate as
well as seawater temperature, on the cycle performances are investigated.

The
minimum Exergy Destruction Rates are obtained for the condensers and deaerators
followed by the blowers and turbines. The Steam Turbine Generator STGI presents
the maximum irreversibility rates of about 4.1 MW. For the explored ranges of
HP steam pressure, the energy efficiencies of steam turbine generators STGI and
STGII increase of about 1.37 % and 8.8 % respectively. While the exergy
efficiencies increase of about 2.46 for STGI and 6.8 % for STGII. In the same
way optimum HP steam flow rate values, leading to the maximum exergy
efficiencies are defined.

Keywords

Condenser, Energy Efficiency, Exergy Efficiency, Phosphoric Acid Plant, Steam Turbine Generator

References

• [1] S. Adibhatla, S.C. Kaushik, “Energy and exergy analysis of a super critical thermal power plant at various load conditions under constant and pure sliding pressure operation”, Applied Thermal Engineering, 2014
• [2] C. J. Koroneos, P. A. Fokaides, E. A. Christoforou, “Exergy analysis of a 300 MW lignite thermoelectric power plant”,Energy, 2014
• [3] A. Bolatturk, A. Coskun , C. Geredelioglu, “Thermodynamic and exergoeconomic analysis of Cayırhan thermal power plant”, Energy Conversion and Management, 2015
• [4] A. Atmaca, R. Yumrutaş, “Thermodynamic and exergoeconomic analysis of a cement plant: Part I- Methodology”, Energy Conversion and Management, 2014
• [5] A. Ghannadzadeh, R. Thery-Hetreux, O. Baudouin, P. Baudet, P. Floquet, X. Joulia, “General methodology for exergy balance in ProSimPlus® process simulator”, Energy, 2012
• [6] M. N. Khan, I. Tlili, W. A. Khan, “Thermodynamic Optimization of New Combined Gas/Steam Power Cycles with HRSG and Heat Exchanger”, Arabian Journal of Science Engineering, 2017
• [7] G. D. Vučković, M. M. Stojiljković, M. V. Vukić, G. M. Stefanović, E. M. Dedeić, “Advanced exergy analysis and exergoeconomic performance evaluation of thermal process in an existing industrial plant”, Energy Conversion and Management, 2014
• [8] A. Edge, H. M Şahin, “Determination of uncertainties in energy and exergy analysis of a power plant”, Energy Conversion and Management, 2014 [9] J. Taillon, R. E. Blanchard, “Exergy efficiency graphs for thermal power plants”, Energy, 2015
• [10] L. Anetor, E. E. Osakue, C. Odetunde, “Thermoeconomic Optimization of a 450 MW Natural Gas Burning Steam Power Plant”, Arabian Journal of Science Engineering, 2016
• [11] O. K. Singh, S.C. Kaushik, “Energy and exergy analysis and optimization of Kalina cycle coupled with a coal fired steam power plant”, Applied Thermal Engineering, 2013
• [12] T.K. Ray, A. Datta, A. Gupta, R. Ganguly, “Exergy-based performance analysis for proper O&M decisions in a steam power plant”, Energy Conversion and Management, 2010
• [13] P. Regulagadda, I. Dincer, G. F. Naterer, “Exergy analysis of a thermal power plant with measured boiler and turbine losses”, Applied Thermal Engineering, 2010
• [14] H. H. Erdem, A.V. Akkaya, B. Cetin, A . Dagdas, S. H. Sevilgen, B. Sahin, I. Teke, C. Gungor, S. Atas, “Comparative energetic and exergetic performance analyses for coal-fired thermal power plants in turkey”, International Journal of Thermal Sciences, 2009
• [15] F. Molès, “Thermodynamic analysis of a combined organic Rankine cycle and vapor compression cycle system activated with low temperature heat sources using low GWP fluids”, Applied Thermal Engineering, 2015
• [16] F. Hajabdollahi, Z. Hajabdollahi, H. Hajabdollahi, “Soft computing based multi-objective optimization of steam cycle power plant using NSGA-II and ANN”, Applied Soft Computing, 2012
• [17] A. Keçebaş, “Energetic, exergetic, economic and environmental evaluations of geothermal district heating systems: An application”, Energy Conversion and Management, 2013
• [18] A.S. Karakurt, Ü. Güneş, ‘’ Performance analysis of a steam turbine power plant at part load conditions’’, Journal of Thermal Engineering, Turkey 2017
• [19] R. Arora, S. C. Kaushik, R. Kumar, ‘’Performance analysis of brayton heat engine at maximum efficient power using temperature dependent specific heat of working fluid’’, Journal of Thermal Engineering, Turkey 2015
• [20] N. Doseva, D. Chakyrova, ‘’Energy and exergy analysis of cogeneration system with biogas engines’’, Journal of Thermal Engineering, Turkey 2015
• [21] A. M. Elsafi, “Exergy and exergoeconomic analysis of sustainable direct steam generation solar power plants”, Energy Conversion and Management, 2015
• [22] S. Peng, Z. Wang, H. Hong, D. Xu, H. Jin, “Exergy evaluation of a typical 330 MW solar-hybrid coal-fired power plant in China”, Energy Conversion and Management, 2014
• [23] M. H. K. Manesh, P. Navid, M. Baghestani, S. K. Abadi, M. A. Rosen, A. M. Blanco, M. Amidpour, “Exergoeconomic and exergoenvironmental evaluation of the coupling of a gas fired steam power plant with a total site utility system”, Energy Conversion and Management, 2014
• [24] A. Ganjehkaviri, M. N. Mohd jaafar, P. Ahmadi, H. Barzegaravval, “Modelling and optimization of combined cycle power plant based on exergoeconomic and environmental analyses”, Applied Thermal Engineering, 2014
• [25] I. H. Aljundi, “Energy and Exergy analysis of a steam power plant in Jordan”, Applied Thermal Engineering, 2009