April 2007

Special Report: Petrochemical Developments

Reduce revamp costs by optimizing design and operations

Combining process and equipment analysis with vendor solutions can minimize capital spending

Alanis, F. J., Park, N. S., Sinclair, I., AspenTech UK Ltd.; Jeong, H. Y., Ye, B. H., Lee, J. J., Korea Petrochemical Industries Co.

Replacing the ethylene and/or propylene refrigerant compressors and their steam turbine drives is a major cost component in the revamp of olefin plants. Sometimes, the capacity expansion goal may require new, larger compressor casings and/or new compressor foundations. In some cases, these modifications can be avoided by including a thorough evaluation of process heat integration, quantification of equipment actual performance and investigation of process redesign opportunities during the revamp study. Also early involvement and iteration with the compressor and turbine vendors is crucial for project success. A process-heat integration study (pinch analysis) can identify process design cha

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