The falling film forced circulation dual effect evaporator is an advanced equipment that combines falling film evaporation and forced circulation evaporation technology. It has significant advantages such as high efficiency, energy saving, and environmental protection, and has been widely used in various industries such as chemical, pharmaceutical, and food. The following is a detailed introduction to the falling film forced circulation double effect evaporator:

      1、 Working principle

      The falling film forced circulation dual effect evaporator mainly consists of a falling film evaporator, a forced circulation pump, and a dual effect system. Its working principle is as follows:

      one Falling film evaporation: The material is evenly distributed on the outer wall of the heating tube bundle through a distributor, forming a thin film. Heating steam passes through the interior of the tube bundle and exchanges heat with the material film, causing the material to evaporate rapidly. The advantage of a falling film evaporator is that it has a short residence time and does not cause degradation of heat sensitive materials; Low steam consumption and high return water ratio; High heat transfer coefficient can effectively improve evaporation efficiency.

      two Forced circulation: The forced circulation pump is responsible for forcibly circulating the concentrated liquid at the bottom of the evaporator to the distributor, ensuring that the material is evenly distributed and fully contacts the heating surface, thereby improving the evaporation efficiency. This step helps to solve the problem of high dependence of the falling film evaporator on the performance of the liquid distributor.

      three Dual effect system: The dual effect system is the core of this evaporator. It cleverly utilizes the secondary steam generated by the first effect evaporator as the heating source for the second effect evaporator, achieving full utilization of thermal energy. This technology effectively reduces energy consumption and improves overall evaporation efficiency.

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