Abstract
Presently, there are two known ways of removing HC1 and SOx from general waste exhaust gas, the dry- and the wet method. Within the ,,dry-method", the ,,slaked lime flue injection-method" and the ,,sodium-bicarbonate injection-method" are known. In case of strict regulations concerning the amount of HC1 and SOx in emitted exhaust gas, the ,,slaked lime flue dry-method" has the disadvantage, that the process of injecting slaked lime flue gas is difficult, and that hight amounts of slaked lime flue are needed to reduce the concentration significantly. The ,,sodium bicarbonate injection-method" on the other hand, makes it easy to reduce the concentration below required levels, but costs for sodium bicarbonate itself are very high. To overcome the above-mentioned limitations, our company has developed a method, which is able to significantly reduce HC1 and SOx levels in exhaust gas by using sodium hydroxide. In this paper, we will elaborate this method, as well as presenting the results of a real-life experiment, where incineration facilities were able to reduce the concentration of emitted HCl,SOx to bellow a level of 5ppm through implementing our method.
