Method of separating from flue gases such gases as are agressive and injurious to the environment, and plant to carry the method into effect

摘要

By the method there are supplied in an atomizing conditioning plant such chemicals as can react with the gases that it is desired to remove, and which chemicals after having reacted partially with said gases are taken out from the atomizing conditioning chamber as a dry powder and in this condition returned to the chamber to a zone immediately around the atomizer. In this way it is possible to obtain a higher degree of utilization of the chemicals supplied, and potentially a better degree of purification than in the case of conventional methods. The plant comprises a conditioning chamber (1) with an inlet (2) and an outlet (3) for flue gases, an atomizer (7) and members (8,9,10) to supply a chemical which reacts with the gases that are to be removed, as well as members (11,12) to remove from the chamber products of the reaction and non-reacted chemical as a dry powder. Furthermore, there are provided members (14) to continuously measuring a part of the powder removed and supply it to a pneumatic transport pipe (15) ending in the chamber (1) in close proximity to the atomizer (7).