| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of cheaply, efficiently, easily, and safely removing a SO<SB>3</SB>component and sulfuric acid mist derived therefrom that are contained in a gas comprising a SO<SB>3</SB>component, for example, a gas generated by burning fuel comprising sulfur in a boiler or the like and generate white smoke, blue smoke or the like. <P>SOLUTION: The method of treating a gas generated by burning fuel in a boiler 1 and sent through a flue to an air preheater 2, a desulfurization device 4, and subsequently to a smokestack 5, includes decomposing sodium hydrogencarbonate powder of a mean particle diameter of not greater than 20μm, of an angle of depose of not greater than 65°, and of a degree of dispersion of not lower than 10% using a gas medium heated up to 60°C or higher, and spraying the resulting material into a gas comprising SO<SB>2</SB>in an amount of at least 500 volume ppm and further comprising a SO<SB>3</SB>component, at least in one flue, to remove the SO<SB>3</SB>component in the gas. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
