Primary diagnosis of energy efficiency in an integrated steel plant, based on intensive energy-saving methodology. Part 1

Abstract

The energy efficiency of the integrated steel plant is studied basing on the Intensive Energy Conservation Methodology. The primary diagnostics of the energy efficiency of the integrated steel plant is carried out. The boundaries of the object of study are established from iron ore deposits to the finished steel cold-rolled sheet. The research object is presented in the form of a directed graph, and the flows of materials in this network are calculated. The thermophysical heat absorption of materials and intermediates within the boundaries of a closed heat engineering complex has been estimated. The energy intensity of the cold-rolled steel sheet within the same boundaries has been calculated. Efficiency of production was estimated by comparing heat consumption and energy intensity. The complete intensive energy conservation reserve in the complex has been determined. Reserve structure is studied and directions of its implementation are discussed. It is shown that the most complete implementation of the energy-saving reserve is possible only with the transition of a new generation of steel engineering and technology.

Primary diagnosis of energy efficiency in an integrated steel plant, based on intensive energy-saving methodology. Part 2

“…Thus, the initial data for calculating the technologically necessary heat consumption are: the temperature schedule of the technology, the thermophysical properties of the materials, the integral flow (through) coefficients of the con-sumption of materials on the final steel sheet which were calculated earlier [1]. Known published data [8,9] on the temperatures of the processed substances are summarized in Table 1.…”

“…The obtained data on the energy intensity of the final products allow, in accordance with the IESM to calculate [1] energy efficiency of the metallurgical complex: where CCM -continuous casting machines.…”

“…The energy efficiency of an integrated steel plant is of great practical interest due to the large economic scale of production and high specific energy consumption for the production of final products. These problems have been studied by many authors using various methods [1][2][3][4][5][6][7].…”

“…The boundaries of the object of study are established from iron ore deposits to the finished steel cold-rolled sheet. The research object is presented in the form of a directed graph, the flows of materials in this network are calculated [1] and they are the initial data for this study.…”