Patent ID: 6379437
Filing Date: 2002-04-30
Classification: B01D

Abstract:
Filter for gases, provided with elongated flow channels (3) which are at least partly formed by superimposing material layers (1) between which the flow channels (3) are formed so that their starting ends are open to a gas inlet (A) and their terminal ends are open to a gas outlet (B), wherein the gas flow between the starting ends and the terminal ends in the channels (3) is arranged parallel to the planes of the material layers (1), and the layers contain an adsorbent in which impurities are adsorbed from the flow in the channels (3), characterized in that the material layers have, on top of each other, at least one support layer (1a) and a porous adsorbent material layer (1b) kept in place by the support layer (1a), and that the channels (3) are formed between spacers (2), or between waves obtained by corrugating the material layer (1) of a substantially even thickness, the spacers (2) or waves constituting elevated areas which deviate from the main direction of the material layer (1) and keep the material layers (1) separate at the channels (3) and contain porous adsorbent material in their inside, and that the channels (3) are enclosed on all sides by porous walls through which there is a flow connection to the adsorbent material surrounding the channels on all sides.