Used horizontal shell and tube heat exchanger polish made with heat exchange surface 14.4 m2. There is 45 pipes setup as “U”, each with internal diameter 26 mm and designed in stainless steel. One site inlet and outlet connections, each with internal diameter 70 mm. Head is designed in carbon steel. Shell has top connection with diameter 120 mm. Outlet from shell goes to carbon steel cooling tank, equipped with stainless steel cooling coil, and final outlet from tank has diameter 70 mm. Heat exchanger is mounted on carbon steel supporting frame. Body of exchanger is insulated.