Technology Unit

The ethylene stream together with  the recycled ethylene out of the high-pressure recycle loop is further compressed by the hyper-compressor up to 3100 bar.

The hyper compressor is a symmetric two stage compressor. In the first stage the compressor feed gas is compressed from about 270 bar to approximately 1250 bar. The gas is compressed in the second stage to pressures up to 3200 bar. After each stage the gas passes through a discharge pulsation dampener. The has to be further heated up for theethylene finally discharged reaction to take place.