| 摘要 |
PURPOSE:To collect fine dust effectively by, after gas-liquid contacting and moistening with high temperature, gas-liquid contacting again, cooling, heating to generate a supersaturation and collecting dust in exhaust gas by conventional procedure. CONSTITUTION:High temperature circulating liquid is sprayed from a circulating liquid tank 7 by a pump 9 in a first column 1, and gas-liquid contacted with exhaust gas A to be saturated. The gas is then led into a second column 3 through a trap 11, and raw temperature circulating liquid cooled down is sprayed by a pump 10 and gas-liquid contacted to be supersaturated. After that, fine dust and liquefied fume, with particle diameters enlarged with a mist catcher 5 and the like in exhaust gas are collected and discharged as purified gas B by a fan 6 out into atmosphere. Thus, fine particles in exhaust gas aggregates water content on the surface by being cooled down rapidly and are easily collected.
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