May 2015

Rotating Equipment

Use new methods to optimize energy efficiency of hydrogen compressors

Hydrogen (H2) is a key to efficient operation of refinery desulfurization units (DSUs). Process H2, both pure and recycled from DSUs, must be compressed to pressures up to 85 kg/cm2. Centrifugal compr..

Vila Forteza, M., Repsol SA

Hydrogen (H2) is a key to efficient operation of refinery desulfurization units (DSUs). Process H2, both pure and recycled from DSUs, must be compressed to pressures up to 85 kg/cm2. Centrifugal compressors and reciprocating compressors are used depending on the flow and pressure requirements of the process. Reciprocating compressors are often used for low to medium flow conditions under a wide range of pressure rates. Leak mitigation and efficiency Several elements can be analyzed to reduce leaks and energy consumption for reciprocating compressors. Fig. 1 shows an energy balance for a typical reciprocating compressor and ways to maximize energy savings.     Fig. 1.&

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