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How to Improve the Operational Capacity of molecular distillation apparatus

Date:2018/6/15Read:6261

    Molecular distillation is a distillation process operated under high vacuum, where the average free path of vapor molecules is greater than the distance between the evaporation surface and the condensation surface, so that the difference in the evaporation rates of the components in the feed liquid can be utilized, for the liquid mixture.
    In the process of molecular distillation, many factors will affect the operation capacity of molecular distillation equipment, of which the more obvious is the feeding position and filler type. Because of this, be careful when designing molecular distillation units.
    If the molecular distillation apparatus has more than two feed ports, it generally needs to be set at different heights of the device. In the production, the appropriate feeding port should be selected according to the specific circumstances, and adjustments are necessary if necessary. The basic principle is that, for equipment that feeds at or near the bubble point, the choice of feed port is based on the composition of the feed being consistent with the composition of the feed plate.
    In general, when the volatile components in the separated mixture are increased, the higher inlet is selected. With the change of the feeding state in the molecular distillation device, the feed inlet should also be adjusted accordingly. When the feed temperature decreases, the feed inlet with a higher position is used; otherwise, the inlet with a lower position is used.
    When the molecular distillation equipment uses different kinds of fillers, the separation results obtained are also different. According to the filling method, the packing can be divided into bulk packing and structured packing. Compared with the same size, the gas-liquid flux in the molecular distillation device Higher and better separation.Then, it is modified into a stepped shape. One end of the cylindrical part is made into a bell mouth shape, so that the packings are in point contact, the bed is uniform and the void ratio is large, and the production capacity is improved and further improvement is made. The significance of the molecular distillation apparatus is also improved. Will be bigger.

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