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Six advantages of falling film evaporator
Evaporator: belonging to an evaporator in evaporator, it has more advantages, so its applicable scope is more extensive, and the use of the industry will be more, and the falling film evaporator principle is very simple, is to feed from the evaporator heating chamber on the tube box, the liquid distribution and film forming device, evenly distributed to each heat exchanger tube in gravity and vacuum induction and flow, into a uniform film flow from top to bottom. In the process of flowing, the shell was heating medium heating vaporization, steam and liquid separation chamber are generated together into the evaporator, after full steam liquid separation, steam enters the condenser (single operation) or into the evaporator as the heating medium, so as to achieve the effect of operation, the liquid phase by separating chamber.
Six advantages of falling film evaporator
1, Short residence time, is not easy to cause the deterioration of materials, suitable for processing of heat sensitive materials.
2. The heat transfer coefficient is higher due to the film flow in the one-way evaporator.
3, The amount of liquid retention is small, the falling film evaporator can be based on energy supply, vacuum, feed volume, concentration and other changes in the rapid operation. Near constant,
4, Because process fluids are driven only by gravity, not by high temperature differences, they can be evaporated at low temperatures.
5. The material of the falling film evaporator is added from the top of the evaporator, falling into the film along the tube wall under the influence of gravity and evaporating during the process, and the concentrate is obtained at the bottom of the evaporator. The falling film evaporator can evaporate materials with higher concentration and higher viscosity.
6, Falling film evaporator is suitable for foaming material evaporation, the liquid in the heating pipe is formed into film like evaporation, vapor liquid separation, while the bottom effect, most of which feed liquid is pumped out, only a small part of feed and all two steam enters the separator liquid whole process of strengthening separation. Not too much impact, to avoid the formation of the bubble.
