| 摘要 |
<p>PURPOSE:To accelerate the oxidation velocity of sulfite contained in an absorbent slurry by making an oxidation part of a vessel in which the absorbent slurry is dropped and stored, providing a liquid permeable plate to the inside of the vessel in the horizontal direction, providing an oxygen-contg. gas introducing pipe to the upper pat of the partition plate and providing the stirrers to both upper and lower parts of the partition plate. CONSTITUTION:In a wet stack gas desulfurization equipment in which a dust removing pat, an absorption part and an oxidation part are made into one body, a vessel in which an absorbent slurry absorbed with SOx is dropped and stored is made to an absorbent oxidizing tank 36 and a liquid permeable partition plate 44 is horizontally provided in the inside of the tank 36 and an air introducing pipe 41 and a stirrer 42 are provided to the upper pat of the partition plate 44 and a stirrer 32 is provided to the lower part of the partition plate 44. CaSO3 produced by absorbing SOx contained in a waste gas in an absorption part 35 is oxidized in the upper part of the partition part 44 with air under violent stirring to generate gypsum. The absorbent slurry contg. the generated gypsum is passed through the partition plate 44 and stirred with a stirrer 32 of the lower part of the partition plate 44 to prevent the settling of slurry and herein the pH is recovered by the replenishment and the mixing of fresh absorbent slurry.</p> |
