TY JOUR TI THE PROBLEM OF PURIFICATION OF COMMERCIAL BENZENE FROM SULFUR IMPURITIES AT THE «PYROTOL» UNIT KW commercial benzene KW desulfurization KW plant Pirotol JO Modern Technologies and Scientific and Technological Progress AU Litvincev, Y.I. AU Trapeznikov, E.G. PY 2023 IS 2023 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»