| 초록 |
Most petrochemical plants consume great amount of energy in the form of steam and electrical power. There is an increasing interest for the development of optimization method for utility systems. The incentives account from emerging dynamic markets, intense competition and the need for efficiency. Energy management systems, including utility and power plants have been the subject of significant research because energy costs often constitute the largest part of the operating cost of a plant. In this paper, optimal operation of utility plant is considered using the MINLP optimization method. Many researches have focused on the external steam demand and external/internal electric power demand. But utility plant not only produces but also consumes great amount of steam. Steam generation unit, which consists of high-pressure feed-water heater (HPH), steam-air heater (SAH), deaerator, oil heater and fuel atomizer, is modeled by heat and mass balance equations and combustion equations.
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