Rising film evaporator
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Product overview and features:This kind of evaporator needs careful design and operation, that is, the secondary steam in the heating tube should have a higher speed and a higher heat transfer coefficient, so that the feed liquid can reach the predetermined concentration requirement once through the heating tube. Generally, under normal pressure, the speed at the upper end of the tube outlet should be maintained at 20~50 m/s, and the speed can reach 100~160 m/s during decompression operation. The rising film evaporator is suitable for the solution with large evaporation capacity, heat sensitivity, low viscosity and easy foaming, but it is not suitable for the solution with high viscosity, crystal precipitation and easy scaling. Relative to the falling film evaporator installed power is relatively small.
Working principle:The heater consists of a heat exchange tube and a shell, and the rising film evaporatorThe heating chamber consists of a vertical bundle of long tubes. Generally, the heating pipe diameter is 25~50mm, and the ratio of pipe length to pipe diameter is 100~150. After the raw material liquid reaches the boiling point or close to the boiling point after preheating, it is introduced from the bottom of the heating chamber. It is driven by the secondary steam rising at high speed and evaporates along the inner wall edge of the heat exchange tube. The required concentration can be reached at the top of the heating chamber. The finished liquid is discharged from the bottom of the separation chamber. The generated secondary steam becomes the heat source of the next effect after removing bubbles, water droplets and sundries.
Rising film evaporator
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Our company is a national high-tech enterprise with independent intellectual property rights, with drying, evaporation, crystallization, filtration, reaction, carbonization, gas (vapor) liquid separation technology as the core, integrating design, research and development, manufacturing after-sales service, technical consulting and installation.
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