Features of application of ORC-technology at compressor stations of metallurgical enterprises

The use of secondary energy resources in metallurgy with their conversion into mechanical and / or electrical energy allows not only to reduce the negative impact on the environment, but also to significantly increase the energy efficiency of facilities. As a result the study design, the results of which are presented in this article defined the energy-saving potential at the compressor station metallurgical enterprises (on the example of the system of supply of technical gases of the process of production of rolled steel from iron ore PJSC Magnitogorsk Iron and Steel Works). A schematic solution and a method for determining the operating parameters of an installation operating according to the so-called "organic Rankine cycle" (ORC installation), which allows obtaining additional electrical energy for production needs by utilizing the heat of interstage cooling of compressor units, are proposed and justified. The features of the implementation of this technology are identified, and the working substance of the ORC installation that meets the requirements of safety and energy efficiency as much as possible is proposed for implementation. The values of the internal efficiency, the power of the ORC installation and the share of usefully utilized heat in the implementation of the proposed scheme are estimated.