TY JOUR TI IMPROVEMENT OF THE EFFICIENCY OF TECHNOLOGICAL UNITS OF OIL REFINERIES USING ASPEN HYSYS KW MODELING KW ANALYSIS KW OPTIMIZATION KW RECTIFICATION KW ASPEN HYSYS JO Herald of Technological University AU Ahmerov, D.R. AU Muhametzyanova, A.G. PY 2025 IS 28 PB Kazan National Research Technological University