关键词: 鼓泡, 蒸发, 晒盐, 传质, 浓海水

Abstract: A 120 m² of shoal bubbling pool was built to evaporate concentrated seawater for solar salt. The pool contained 9120 aeration with diameter of 1 mm. The blower created bubbles with rated flow rate at 420 m³·h^-1. The temperature, Baume degrees of concentrated seawater, the environmental humidity were measured per an hour, the effects of temperature, humidity, air flow rate on the evaporation was discussed. The results showed that the bubbling evaporation works efficiently from 12:00 p.m. to 15:00 p.m. At the optimum conditions, the bubbling pool evaporated 120 kg more than that control pool. The blowing air only taken away water vapor less than 8.7 kg. The floating bubbles increased the pool surface area around 50%—60%, which means that the same percent of the water evaporation was raised; the rest was evaporated by other ways，like droplet. Having a faster evaporation rate than the traditional solar salt, the shallow bubbling solar salt method has a promising application prospection the premise of the costs of equipments and operation having being lowered.

Key words: bubbling, evaporation, solar salt, mass transfer, concentrated seawater