System for scrubbing alkyl halides from gases

Details System for scrubbing alkyl halides from gases System for scrubbing alkyl halides from gases

B - Operations, Transporting

01

D

B01D 53/00 (2006.01) C01B 7/00 (2006.01)

Patent

CA 2584776

Alkyl halides can be effectively scrubbed from gas streams containing them by passing the gas streams through dispersers having a very small pore size into an aqueous scrubbing liquid containing a nucleophile such as thiosulfate. Optionally, the addition of a water-soluble organic compound to the scrubbing liquid may increase the rate of destruction of the alkyl halide. Alkyl halides such as methyl bromide can be effectively scrubbed from enclosed spaces containing the halide, for example in enclosures used for fumigation.

Selon l'invention, des halogénures d'alkyle peuvent être éliminés de flux gazeux contenant ceux-ci de manière efficace en faisant passer les flux gazeux à travers des disperseurs qui présentent une taille de pores extrêmement réduite et dans un liquide de purification contenant un nucléophile de type thiosulfate. L'ajout d'un composé organique soluble dans l'eau peut éventuellement faire augmenter le taux d'élimination des halogénures d'alkyle. Les halogénures d'alkyle de type bromure de méthyle peuvent être éliminés de manière efficace à partir d'espace clos les contenant, par exemple dans des enceintes utilisées à des fins de fumigation.

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