Energy and Exergy Analysis of FCCU Pre-Heating Unit of KRPC, Nigeria Conference Presentation At The 3 rd INTERNATIONAL DOWNSTREAM CONFERENCE/EXHIBITION ON PETROLEUM REFINING, PETROCHEMICALS & FERTILIZERS, PORT HARCOURT 2014 August 27-28, 2014

Presentation Outline  Introduction  Literature Review  Experimental Analysis  Process Description  Results and Discussion  Conclusion and Recommendation  Reference

INTRODUCTION  Why exergy and energy analysis? Due to the relatively high energy cost as a component of a unit production cost, it is necessary for any plant to carry out analysis of energy utilization. Exergy analysis is a methodology for the evaluation of the performance of devices and processes, this involves examining the exergy at different points in a series of energy-conversion steps. With this efficiencies can be evaluated, and the process steps having the largest losses can be identified (Rosen, 2004). kk. Ideal Work Exergy Destruction/Loss Second Law Efficiency Figure 1. Major components of exergy and energy analysis Component of Exergy

SCOPE OF STUDY  To analyze FCCU Pre-Heating Unit of Kaduna Refining and Petrochemical Company (KRPC) through energy and exergy perspective.  Sites of primary energy loss and exergy destruction will be determined.  The second law and exergy efficiencies will also be determined.

LITERATURE SURVEY  Kaduna Refining and Petrochemical Company (KRPC)  It was design and constructed by a Japanese Chemical Engineering Company (CHIYODA)  It was commissioned in 1980 as NNPC Refinery Kaduna, with an initial capacity of 100,000 barrels per stream day [BPSD].  The Refinery was designed to process both Nigerian and imported crude oils into fuels and lubes products.  The purpose of FCCU Pre-heating Unit is to preheat the feed before entering the catalytic reactor.  The most widely used cracking units are the catalytic type with a moving catalyst bed of Zeolite – Y as this gives a higher conversion and selectivity.

EXPERIMENTAL ANALYSIS

PROCESS DESCRIPTION Figure 2: Preheating section of FCCU in KRPC

RESULT AND DISCUSSION Figure 3: Second law efficiency

RESULT AND DISCUSSION Figure 4: Exergy efficiency

CONCLUSIONS  The exergy and energy analysis of FCCU Pre- Heating Unit was done successfully.  The exergy destruction (loss work) was found to be high in Heat Exchanger 16E-02.  The calculated second law and exergy efficiencies of the system were and 56.99% respectively.

REFERENCES J. Szargut, D.R. Morris, F.R. Steward, Exergy Analysis of Thermal, Chemical, and Metallurgical Processes, Hemisphere, New York, M. Kopac, A. Hilalci, Effect of ambient temperature on the efficiency of the regenerative and reheat Catalag˘zı power plant in Turkey, Applied Thermal Engineering 27 (2007) 1377–1385. M. Rosen, I. Dincer, Effect of varying dead-state properties on energy and exergy analyses of thermal systems, International Journal of Thermal Sciences 43 (2004) 121–133. Nigerian National Petroleum Corporation (2004), FCCU Refresher Course Programme, Z. Utlu, A. Hepbasli, A review on analyzing and evaluating the energy utilization efficiency of countries, Renewable and Sustainable Energy Reviews 11 (2007) 1–29.

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