| 摘要 |
PCT No. PCT/SE96/00464 Sec. 371 Date Oct. 10, 1997 Sec. 102(e) Date Oct. 10, 1997 PCT Filed Apr. 10, 1996 PCT Pub. No. WO96/32180 PCT Pub. Date Oct. 17, 1996An air filtering unit for preparing highly purified air comprising: a) an inert separation filter for removing solid particular matter, b) a filter element comprising solids adsorbing molecules by using van der Waal forces; c) a filter element comprising molecular sieves; and optionally d) a filter element having the ability of binding polar, acid or basic molecules. |
