B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01) B01D 53/22 (2006.01)
Patent
CA 2558116
The present invention relates to a system and an apparatus for removal of unwanted substances in a gas flow (1) comprising a number of purification modules, each module comprising a hydrophobic membrane (3), a mixing container (10), and a solvent fluid, where the substances in the gas flow (1) are diffused through the hydrophobic membrane (3) and are absorbed in the solvent fluid, and where the purified gas flow (11) is led to either a further purification module or to the surrounding environment, wherein the solvent fluid either is an alkaline solvent fluid or an acid solvent fluid, where said solvent fluids circulate between said hydrophobic membrane (3) and said mixing container (10), and where either concentrated acid or alkaline fluids are added to said solvent fluid in the mixing container (10) in order to maintain a substantially constant pH value in the solvent fluid. The invention furthermore relates to methods for removing ammonium from a biogas process, for cleaning an air flow, and for drying waste.
L'invention concerne un système et un dispositif permettant d'éliminer des substances indésirables contenues dans un flux gazeux (1), comprenant un nombre de modules de purification, chaque module contenant une membrane hydrophobe (3), un récipient de mélange (10) et un fluide solvant. Les substances contenues dans le flux gazeux (1) sont diffusées à travers la membrane hydrophobe (3) et sont absorbées dans le fluide solvant. Le flux gazeux purifié (11) est guidé soit jusqu'à un autre module de purification, soit jusqu'à l'environnement ambiant. Le fluide solvant est soit un fluide solvant alcalin, soit un fluide solvant acide. Lesdits fluides solvants circulent entre la membrane hydrophobe (3) et le récipient de mélange (10). Des fluides acides ou alcalins concentrés sont ajoutés audit fluide solvant dans le récipient de mélange (10), afin de maintenir un pH sensiblement constant dans le fluide solvant. L'invention concerne en outre des procédés permettant d'éliminer l'ammonium dégagé d'un processus de biogaz, pour purifier un flux d'air et pour sécher des résidus.
Bioscent Holding Aps
Gowling Lafleur Henderson Llp
Ismail Touri Dba Bioscent
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