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Article | REF: J3580 V1

Dusting and stripping

Author: Bernard SIRET

Publication date: June 10, 2001

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9. Fume dispersion

Even after thorough dedusting, a certain amount of dust will remain in the purified gas. It is therefore important to ensure that the fumes are properly dispersed, so that the concentrations that can be reached at ground level or in neighbouring buildings remain within acceptable limits. In most cases, this is achieved by means of chimneys that disperse both particles and gaseous pollutants such as sulphur oxides, hydrochloric acid and nitrogen oxides.

9.1 Theoretical considerations

Several theories and formulas, including Turner's, give the concentration of a pollutant as a function of the initial concentration, the relative coordinates of the emission point and the flow rate.

Current models, the details of which are far beyond the scope...

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