تحليل اگزرژي و بهينه سازي در واحد توليد اكسيژن به روش كرايوژنيك در جهت افزايش توليد و راندمان

Oxygen is a colorless, odorless, an‎d tasteless gas an‎d the most abundant element in the Earthʹs crust, utilized in various industries such as steel, aerospace, chemical production, pulp an‎d paper, welding, cement, an‎d refineries. The growing deman‎d for oxygen in the steel an‎d chemical industries, as well as in oxygen-enriched combustion processes, has led air separation units to be recognized as significant consumers of electricity in industrial sites. In such systems, energy analysis alone is not sufficient; therefore, exergy analysis is proposed as a more precise tool to determine where the destruction of the potential to perform useful work occurs. In this research, an exergy analysis of a cryogenic oxygen production unit has been conducted. By simulating the main schematic in HYSYS software, the values for physical, chemical, an‎d total exergy were calculated. In the subsequent section, the unit in question was optimized. In the optimal state, an increase in alignment was observed in the validation diagrams. Furthermore, in this condition, the molar flow rates of the column output streams were increased by applying optimal pressure in the compressors an‎d increasing the reflux ratio. Most importantly, by keeping the inlet an‎d outlet pressures constant in the coolers of the simulated unit, the efficiency of this equipment was improved.

بهمن اسدي , ابوالحسن عسگر شمسي

هادي صفائي , حامد رضوي بني