Method and device for removing harmful substances, in particular, dioxin
AssigneeN.V. Avira Afvalverwerking
InventorMartin Gerardus Uitvlugt
Life of this patent
Estimating the term…
Abstract
A method for removing harmful substances, in particular dioxin, from flue gas generated in for example a waste incinerator, using an adsorption agent, characterized in that after said flue gas has been washed with a washing medium, the adsorption agent is discharged together with the washing medium for subsequent collection of the adsorption agent. At least one of the substances from the group of active carbon, brown coal, coke, lime, lava rock and pumice stone is used as the adsorption agent.
Claims19
A process for removing harmful substances from flue gas wherein the flue gas is washed with a washing medium in an apparatus comprising a lining and the washing medium is brought into contact with an adsorption agent, the process comprising the steps of:
- (a) measuring the harmful substance content of the flue gas before and after the removal of the harmful substance therefrom;
- (b) measuring the harmful substance content of the washing medium being discharged;
- (c) calculating, based on the measurements obtained in steps (a) and (b), the harmful substance content of the washing medium resulting from the adsorption or desorption by the lining of the apparatus used in carrying out the process;
- and (d) adjusting the magnitude of at least one process parameter governing the harmful substance content of the flue gas/washing medium depending on the degree of said adsorption or desorption of the harmful substance by said lining.
A device for removing harmful substances from flue gas wherein the flue gas is washed with a washing medium and the washing medium is brought into contact with an adsorption agent, the device comprising:
- (a) a lining capable of adsorption or desorption of the harmful substance;
- (b) means for measuring the harmful substance content of the flue gas before and after the removal of the harmful substance therefrom;
- (c) means for measuring the harmful substance content of the washing medium being discharged, wherein based on measurements made by the measuring means of (b) and (c), the harmful substance content of the washing medium resulting from the adsorption or desorption by said lining is calculated;
- (d) means for adjusting at least one process parameter governing the harmful substance content of the flue gas/washing medium, depending on the degree of adsorption or desorption of the harmful substance by said lining.
Dependencies are inferred from the claim text.