| 摘要 |
1. A method for obtaining gaseous SO3 by thermal decomposition of sulphur acid, characterized in that into the air stream of temperature of 500-800 degrees C, and preferably 650-750 degrees C, sulphur acid is added as a mist while keeping the drop diameter below 50 μm, and air is heated primarily outside or inside the device.3. The device for obtaining gaseous SO3 by thermal decomposition of sulphur acid, characterized in that it includes a central chamber (5) for the thermal acid decomposition, and this chamber is surrounded with heating ducts (2) separated between concentric walls by means of vertical radial walls (3), and on the outside of those ducts, a concentric chamber (1) for the preliminary air heating is located.<IMAGE>
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