[from HOERBIGER@MOTION June 2016 ]
Eni Taranto, established in 1967 and one of Southern Europe's largest refineries, has a processing capacity of 6.5 million tons of crude oil. Efficiency is especially crucial in the energy-intensive refinery hydrocracking processes, used to compress oxygen to generate lightweight hydrocarbons and separate sulfur from crude oil.
Hydrocracking does not require 100 percent compressor performance on an ongoing basis. As a result, a compressor featuring a conventional bypass design, which simply returns excess compressed gas, regularly results in lost energy. Without stepless capacity control, the energy spent on compression of the excess gas volume is lost, and along with it cold hard cash.