| 摘要 |
<p>For the disposal of the products from wet flue gas desulphurisation plants operated with limestone or calcium hydroxide as adsorbents by producing dry end products which can be dumped, the chloride-containing suspension of calcium sulphate dihydrate is passed from the bottom outflow of a hydrocyclone of a flue gas desulphurisation plant with oxidation directly into a spray-drying unit and processed therein with flue gas, after air preheating, to give a dry solid end product which contains calcium sulphates, calcium chloride and other solid impurities from the originally used absorbent and, in some cases, from the flue gas. Preferably, dust is precipitated after the spray drying and before the desulphurisation.</p> |
