Abstract: The internal efficiency and heat consumption of propylene refrigeration compressor unit before the revamping and expansion of an ethylene plant to 1100 kt/a are calculated and compared with those after the revamping based on the historical operating parameters of the compressor unit. Through calculation and simulation, the heat consumption and pumping ratio model of the compressor unit under a certain load is established, and the current operation is optimized for energy saving and consumption reduction.

Key words: ethylene plant')">

ethylene plant, propylene refrigeration compressor unit, heat consumption, internal efficiency