Evaporation is widely used in food, chemical, pharmaceutical, biological and environmental protection fields, such as milk, juice, salt, sugar, antibiotics, amino acids, and wastewater concentration. Due to the phase change in the process-vaporization and condensation, the large amount of steam consumed by the evaporation operation is widely used in food, chemical, pharmaceutical, biological and environmental protection fields, such as milk, juice, salt, sugar, antibiotics, amino acids, Wastewater concentration. Due to the phase change in the process-vaporization and condensation, the large amount of steam consumed by the evaporation operation is widely used in food, chemical, pharmaceutical, biological and environmental protection fields, such as milk, juice, salt, sugar, antibiotics, amino acids, Wastewater concentration. Due to the phase change in the process-vaporization and condensation, the large amount of steam consumed by the evaporation operation is used for ...