What is a plate evaporator
The plate evaporator is an evaporator that uses a metal plate instead of a round tube as a heat transfer element. It uses a plate corrugated flow structure, a chocolate-shaped diversion channel, evenly distributes the flow of the medium, and adopts a countercurrent heat exchange form to give full play to the plate evaporation The heat exchange efficiency of the device. Reduce the use of configuration area, increase the geometric size space of the heat exchange area of the film forming section, and improve the evaporation capacity. The installation equipment occupies a small space, is simple and easy to maintain, and has been favored by many users.
Plate evaporators are widely used in sugar, chemical, food, pharmaceutical and other industries due to their advantages of high heat conduction efficiency, convenient maintenance, easy expansion, low system cost, and small footprint.
The plate type evaporation system is mainly composed of plate type preheater, plate type heat exchanger, plate type evaporator, plate type condenser and material pump, separator, demister, steam washing tower, pipeline, etc., mainly including single-effect evaporation and multi-effect evaporation , Mvr evaporation, tvr evaporation and other systems.
The working principle of the plate evaporator: The temperature of the material to be evaporated rises above the bubble point under the corresponding pressure through the heat exchange of the medium wall, resulting in continuous boiling, and is separated into high-concentration liquid and pure saturated water vapor in the gas-liquid separator In order to achieve the purpose of concentration.
The plate evaporator material and steam passage are alternately combined by the same plates through sealing gaskets or welding.
The plate evaporator has a high heat transfer coefficient, and the special plate corrugated form makes the material liquid easy to reach a strong turbulent state, which is 2 to 3 times the heat transfer coefficient of the tube evaporator. The plate evaporator is not prone to blockage, and the material liquid is changing. The hot surface forms a turbulent flow, which washes the surface of the heat exchanger, which can delay the fouling cycle.
The plate evaporator has a compact structure and small size. Under the same evaporation capacity, the plate evaporator occupies only one-third to one-fourth of the tube evaporator, and the height is only ten times that of the tube evaporator. One part, and it is very convenient for maintenance and expansion. It can adapt to a variety of environments and overcome space limitations. It has also been widely used in the expansion of sugar evaporation systems.
