A kind of electric field strengthening tubular falling film evaporation device and method thereof
A falling-film evaporation and tube-strengthening technology, applied in vertical tube evaporators, chemical instruments and methods, evaporation, etc. The effect of thermal coefficient, ensuring safety and reducing energy consumption
Active Publication Date: 2015-12-02
ZHEJIANG UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the shortcomings of the existing evaporator with low heat transfer coefficient and too large volume, apply the phenomenon that the high-voltage electric field can strengthen the evaporation process to the traditional tube-type falling film evaporator, and provide a high heat transfer coefficient and large volume Electric field enhanced falling film evaporation device with small size and low energy consumption and its method
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[0027] Such as figure 1 , 2 , 3, 4, 5, and 6, the electric field enhanced tubular falling film evaporation device includes an upper insulating base 1, an upper electrode plate 2, an electrode wire 3, a liquid distributor 4, an evaporator shell 5, a steam inlet 6A, Cooling water outlet 6B, stainless steel pipe 7, liquid outlet 8, lower insulating base 9, lower electrode plate 10, high voltage power supply 11, insulator 12, fastening ring 13, conductive rod 14, liquid inlet 15A, two-phase outlet 15B, poly Tetrafluoroethylene spiral shell 16, insulating base 17, support rod 18, gas-liquid separator 19, upper tube plate 20A, lower tube plate 20B, liquid distribution plate 21, liquid distribution hole 22, liquid contact plate 23, pin hole 24 , insulating support body 25;
[0028] The evaporator shell 5 is sequentially provided with an upper insulating base 1, an upper electrode plate 2, a liquid distributor 4, an upper tube plate 20A, a stainless steel tube 7, a lower tube plate ...
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The invention discloses electric field-intensified tube type falling-film evaporation device and method. The electric field-intensified tube type falling-film evaporation device is mainly composed of a high-voltage power supply, an electrode plate, an electrode wire, an insulating device, a liquid distributor, a stainless steel tube, a shell and a gas-liquid separator. According to the method, liquid enters the stainless steel tube to form a falling film through the liquid distributor, and is evaporated after absorbing heat which is released by steam condensation on the side of the shell; the evaporation process can be further intensified by a high-voltage electric field formed by the electrode wire in the tube; the evaporated liquid enters the gas-liquid separator to be subjected to gas-liquid separation; and secondary steam and concentrated liquid can be further utilized. The high-voltage electric field is formed by electrodes in a falling-film evaporator by utilizing the effect of high-voltage electric field-intensified evaporation, so that the heat transfer coefficient of the evaporator can be improved; the heat exchange area of the evaporator is reduced; tube materials are saved; and energy consumption is reduced.
Description
technical field [0001] The invention relates to an electric field enhanced tube type falling film evaporation device and a method thereof, belonging to the technical field of evaporators. Background technique [0002] Evaporation is a unit operation that uses heating to heat a solution containing a non-volatile solute to a boiling state, so that part of the solvent is vaporized and removed, thereby increasing the concentration of the solute in the solvent. The application of evaporation operation in industrial production has the following occasions: 1. Concentrate dilute solution to directly produce products or reprocess concentrated solution (such as cooling and crystallization) to produce solid products, such as the concentration of electrolytic caustic soda, the concentration of sugar aqueous solution and the concentration of various fruit juices, etc.; 2. Concentrate the solution and recover the solvent at the same time, such as the concentrated debenzene of the organop...
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IPC IPC(8): B01D1/06B01D1/22B01D1/30B01J19/12
Inventor 骆仲泱肖刚倪明江岑可法方梦祥李明春
Owner ZHEJIANG UNIV