Flat board type film distilling device, distilling method and application
A membrane distillation and flat-plate technology, applied in chemical instruments and methods, total evaporation, membrane technology, etc., can solve problems such as temperature drop and cooling medium temperature increase, and achieve increased output efficiency, high application value, and improved distillation efficiency Effect
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Embodiment 1
[0058] This embodiment provides a flat-plate membrane distillation device.
[0059] The flat-plate membrane distillation device consists of four distillation units, and each distillation unit includes a membrane frame 1 (such as figure 2 shown) and a flow channel grid 8 (such as image 3 shown).
[0060] Distillation membranes 3 and condensation membranes 4 are respectively arranged on the opposite sides of the membrane frame, a support grid 2 is arranged between the distillation membrane 3 and the condensation membrane 4 of the membrane frame, and membrane frames are respectively arranged at two adjacent corners of the membrane frame The liquid channel 5, the film frame liquid channel includes a hot film frame liquid channel 501 and a cold film frame liquid channel 502 (during actual assembly, the two liquid channels only need to be adjacent, and the positions can be exchanged arbitrarily), the film frame liquid channel It includes the liquid channel of the hot film frame ...
Embodiment 2
[0066] According to the flat-plate membrane distillation apparatus provided in Example 1, assemble and then carry out distillation. The distillation method is as follows, and the disassembly diagram of the distillation device can be referred to Figure 4 .
[0067] The cooling water flows in from the fluid inlet 9 of the runner grid 8, and flows out through the fluid inlet 9a located at the diagonal. After the liquid channel of the cold film frame (the specific flow direction is as follows Figure 4 9a in the center), enter the fluid inlet 9b of the next-stage runner grid, and at this time, after the cooling liquid flows in the cold water channel, the fluid inlet 9c located at the diagonal of this first-level runner grid Outflow, the cold water flowing out from 9c passes through the same passage again, continues to pass through similar liquid passages, flows into the next stage, and also flows in the cold water passage for circulation;
[0068] The distilled water flows in ...
Embodiment 3
[0071] The present embodiment carries out distillation according to the method of embodiment 2.
[0072] The inlet pressure of the cooling water is 0.15MPa, the inlet water temperature is controlled by the cooler at 28°C, the inlet pressure of the hot water is 0.15MPa, and the inlet water temperature is maintained at 50°C by the controllable heater. Condensed water flows out from the water production hole 6, (the total effective area of the experimental device is 0.25 square meters, and the water production is 1.015 liters measured in 2 hours). The water production efficiency is 2.03 liters / square meter / hour.
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Abstract
Description
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