• Ozren J Ocić, Faculty of International Engineering Management, Belgrade, Serbia
  • Rade Vorkapić, Nezavisni konsultant, Serbia
  • Ivan Nikolić, Faculty of International Engineering Management, Belgrade, Serbia
  • Suzana Đokić, Faculty of International Engineering Management, Belgrade, Serbia

Oil Refinery Energy Optimization: Alkylation Unit

  • Possible method for determining the energy efficiency will be presented taking one refinery unit named alkylation unit as an example. From the aspect of energy, the efficiency and optimization of alkylation unit is analyzed through thecost price of high, medium, and low pressure steam and the possible money savings that can be realized by eliminating differences between the target standard(average energy consumption standards of Western European refineries) and specific energy consumption. High pressure steam consumption is 80000 t/y or 258 TJ. The consumption of medium pressure steam is 140000 t/y or 419 TJ. Own generation of low pressure steam, obtained by reduction on back-pressure turbines, is 20000 t/y or 55 TJ and is used for own consumption. Price of high pressure steam, supplied from Refinery Power Plant, is 10.83 US$/t, price of medium pressure steam, supplied from Refinery Power Plant too, is 9.66 US$/t, and price of low pressure steam, generated on the alkylation unit, is 11.78 US$/t. Concerning the possibilities of monitoring and increasing of energy efficiency and optimization, through net consumption target standard, and specific gross and net energy consumption of outlined unit, upon analysis it can be shown that in efficiency index is 193%. Possible money savings realized by eliminating these differences are approximately 1.14 million US$ per annum. Money saving can be realized by using more efficient technological, energy and organizational solutions. In this paper we are presenting possible method for determining the energy efficiency.
  • Keywords
    alkylation unit, technological/energy characteristics, energy optimization, money saving, target standard
  • Pages
    273 - 281
  • Submitted
  • Revised
  • Accepted
  • UDC
    0350-218X, 37 (2011), 3, 273-281
  • References
    • Ocić, O., Oil Refineries in the 21st Century, Energy Efficient, Cost Effective, Environmentally Benign, John Njiley & Sons, Nenj York, USA, 2005
    • O. Ocič, Effektivnost pererabotki nefti, Monograph, Znamen, Belgrade, 2005, ISBN: 86-81653-32-6
    • ***, Petroleum Industry of Serbia, Internal Documentation
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