TY JOUR TI RECONSTRUCTION OF THE WASTEWATER TREATMENT UNIT IN THE PRODUCTION OF DICHLOROETHANE AND VINYL CHLORIDE KW shell-and-tube apparatus KW reconstruction of the heat exchanger JO Modern Technologies and Scientific and Technological Progress AU Scherbin, S.A. AU Petrushin, G.A. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»