MODELING AND OPTIMIZATION OF THE AIR- AND GAS-SUPPLYING NETWORK OF A CHEMICAL PLANT

  • Han, In-Su (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Han, Chong-Hun (School of Chemical Engineering, Seoul National University) ;
  • Chung, Chang-Bock (Faculty of Chemical Engineering, Chonnam National University)
  • Published : 2004.08.25

Abstract

This paper presents a novel optimization method for the air- and gas-supplying network comprised of several air compression systems and air and gas streams in an industrial chemical plant. The optimization is based on the hybrid model developed by Han and $Han^1$ for predicting the power consumption of a compression system. A constrained optimization problem was formulated to minimize the total electric power consumption of all the compression systems in the air- and gas-supplying network under various operating constraints and was solved using a successive quadratic optimization algorithm. The optimization approach was applied to an industrial terephthalic acid manufacturing plant to achieve about 10% reduction in the total electric power consumption under varying ambient conditions.

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