Filter media

Details Filter media Filter media

B - Operations, Transporting

01

J

252/121, 260/758

B01J 20/28 (2006.01) B01D 39/00 (2006.01) B01D 39/08 (2006.01)

Patent

CA 2277478

An adsorbent media, particularly of a type formed from a sheet-form carrier substrate, incorporating particulate adsorbents therein for use filtration of fluids, i.e., by gas/solid liquid/solid interactions wherein the contaminant atom, ion, or molecule of gas or liquid adheres or is otherwise retained by the solid adsorbent particle thereby removing it as a contaminant from the filtered fluid is provided by forming a fluid-permeable carrier substrate containing fibres capable of withstanding prolonged contact with a fluid to be filtered, treating the carrier substrate to introduce fixing agents including a binder and a film-former, and particulate adsorbent material(s) to the carrier substrate, wherein the amount of fixing agents, particularly of film former is just sufficient to retain the adsorbent material(s) in the carrier substrate whereby shedding of the adsorbent therefrom is substantially avoided.

Matériau adsorbant constitué, en particulier, par un substrat de support sous forme de feuille incorporant des adsorbants en particules afin de filtrer des liquides, sous l'effet d'interactions entre gaz et solides ou entre liquides et solides, le contaminant, tel qu'un atome, un ion ou une molécule de gaz ou de liquide, adhérant ou étant sinon retenu par la particule solide d'adsorbant, ce qui enlève ledit contaminant du liquide filtré. On prépare un substrat de support perméable aux liquides contenant des fibres capables de résister à un contact prolongé avec un liquide à filtrer, on traite ce substrat afin d'y introduire des agents de fixation comprenant un liant et une substance filmogène, ainsi qu'un ou plusieurs matériaux absorbants en particules, la quantité d'agents de fixation, particulièrement, de substances filmogènes, suffisant à retenir ledit ou lesdits matériaux absorbants dans le substrat, ce qui évite pratiquement d'en rejeter l'adsorbant.

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