Rerating rotating equipment optimizes olefins plant performance
Rerating your installed compressors and steam turbines can become a cost-effective, time-saving solution for increasing throughput without having to invest in new equipment.
The operators of mega ethylene plants are under constant
pressure to meet enhanced performance specifications and more
stringent environmental regulations, while, at
the same time, reducing energy costs and improving feedstock
flexibility. As ethylene plants have evolved in response to
market demands (Fig. 1), technical advances in
rotating equipment have boosted operating ranges and
performance parameters for the centrifugal compressors and
steam turbinesboth are at the heart of ethylene plant
operations. When considering the effect of changing market
conditions on plant performance, particularly feedstock flexibility, producers
must first evaluate changes to gas composition and process
parameters in light of the plants existing
Fig. 1. Growth trend in
ethylene plant capacity.
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