... , ammonia evaporation processDesign pressure (Mpa) 1.00.44 F=60Elution benzene, ammonia evaporation process Work pressure (Mpa) 0 ... .80.4 F=90Elution benzene, ammonia evaporation processDesign temperature (oC) 100~ ... , ammonia evaporation process Working temperature (oC) 90~170 60~120 Poor,rich oilOil heat exchangerOCr18Ni9/Q235Elution benzene, ammonia ...