| 摘要 |
Dry method of exhaust gas treatment, especially removing sulphur oxides, nitrogen oxides and dust, consisting of oxidising nitrogen oxide, cooling and moisturising exhaust gases, chemisorption of the sour pollutants and precipitating reaction products, unreacted sorbent and volatile ashes on a filtration barrier, characterised in that ozone, sprayed water and dusty calcium hydroxide are entered into a stream of hot exhaust gases, while maintaining relative moisture of exhaust gas above 40 percent and a difference between exhaust gas temperature and moisture saturation temperature of exhaust gas below 15K, whereby the mole ratio of the dosed ozone in relation to a sum of sulphur dioxide and nitrogen oxide present in the exhaust gas is around 0.5-2.0, whereby the concentration of the dosed ozone is around 1-20g/mn3, whereby the mole ratio of the dosed calcium hydroxide in relation to a sum of sulphur dioxide and nitrogen oxide present in the exhaust gas is between 0.5 and 2.0. |
