| 摘要 |
In order to minimise the content of the acid radical of sulphurous acid in flue gases from thermal power stations and/or in the drying vapours from sugar factories, it is proposed to use the calcium carbonate sludge being formed as a waste product in the juice purification for the production of sugar, in particular beet sugar. In this case, the sludge is diluted with water and then dispersed over a large area into the flue gases and/or vapours to initiate a reaction with the acid radical of sulphurous acid. A plant which can be operated in this way is characterised by a reaction tower which is inserted between the boiler house with the drying gas discharge lines and the stack and which is connected to the sludge take-off of the decanter of the first carbonation stage and downstream of which a drip-off housing for separating the flue gas or vapour gas from sludge and water is provided. |
