Improvement of the oxygen compressor intermediate cooling system by using the organic Rankine cycle
Multistage centrifugal compressors are used to compress and supply gaseous oxygen to the metallurgical production network. During the production of compressed gas, low-potential heat is released, which is discharged by the cooling system and dispersed into the atmosphere. There is a problem of selecting a coolant, the use of which will make it possible to effectively use the heat of compression. The purpose of this work is to create an energy-efficient scheme for intermediate cooling of a turbocharger installation inside the oxygen supply system of an electric furnace due to the generation of electric energy on the heat of compression. The work was carried out on the following points: assessment of the energy saving reserve; development of an energy-efficient intermediate cooling scheme and the choice of a cooling coolant; evaluation of the effectiveness of the developed intermediate cooling scheme; mathematical modeling; assessment of the economic effect.