Chevron – Case 6

Customer was operating multi-stage hydrogen compressors in a refinery that compressed a gas which was hydrogen rich. Flow requirements changed in more recent times and in addition load requirements had become more variable.

To meet the ever changing flow rates, new capacity control equipment was required. In some applications, the working pressures approached 3500 psi.

Unloader bodies were primarily machined from block forgings. Volumes for the unloaders were sized by ACI to meet customer flow specifications. All seals were special designs and materials to address the difficult gas analysis, temperatures.

Unloader assemblies ran for many years in continuous duty before requiring seal replacements.