Criteria to Consider for Glass Rectification Units
Release Time:
2022-10-25
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In the prior art, the rotary drum of the centrifugal glass molecular rectification device is installed on the base, and the condenser is installed on the top cover. This structure has high production standards because the relatively small evaporation area is easy to cause water mist when used improperly. , affecting the quality and yield of distillation products.
The rectification process is: the material is added from the top of the evaporator and is continuously and evenly distributed on the heating surface through the material-liquid distributor on the rotor, and the film scraper scrapes the product into a thin and turbulent liquid film. In this process, light molecules overflowing from the heated surface usually condense into liquid on the condenser without collision and flow down the condenser tube, usually discharged from the discharge tube at the bottom of the evaporator; the remaining liquid is heavy molecules It is collected in the circular channel below the heating zone and flows out through the side discharge pipe.
Because the glass rectification device is column equipment mainly used in the mass transfer process, first of all, sufficient gas-liquid two-phase can be fully contacted to achieve high mass transfer efficiency. In addition, to meet the needs of production, tower equipment also needs to consider the following criteria:
(1) Large production capacity. Under a relatively large gas (vapour) liquid flow rate, many phenomena such as entrainment of mist, liquid blocking, or liquid flooding that normal damage use will not occur;
(2) The use is stable and flexible. When the gas (vapour) liquid load of the tower equipment fluctuates greatly, it can still use it stably with a high mass transfer efficiency, and the tower equipment should be guaranteed to be used stably for a long time;
(3) The resistance of the fluid flow is small. That is, the pressure drop of the fluid passing through the tower equipment is small. This will greatly save power consumption in production to reduce normal usage expenses. For vacuum distillation, a large pressure drop will also make the system unable to maintain the vacuum degree;
(4) The structure is simple, the material consumption is small, and the production and installation are very easy. This can reduce investment costs in the infrastructure process;
(5) Corrosion-resistant and not easy to block, use, adjust and repair.
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