公开(公告)号：GB734258A

公开(公告)日：1955-07-27

申请号：GB3545153

申请日：1953-12-21

Applicant: BASF AG

Inventor： RAICHLE LUDWIG ,  BUDDENBERG OTTO ,  KEMMER LUDWIG

IPC: B01D3/24

Abstract: 734,258. Contacting liquids with gases. BADISCHE ANILIN- & SODAFABRIK AKT.-GES. Dec. 21, 1953, No. 35451/53. Class 55 (2). A gas-liquid contact column comprises a series of horizontal contact platforms arranged one above the other in a column down which liquid is passing wherein each platform is sub-divided into sector-shaped or annular sections in such a way that imperforate section is followed by a gas permeable section through which a gas is passing upwardly and which is followed in turn by an open section allowing free passage of liquid on to the platform below, if desired a weir being provided at the free edge of the imperforate section to determine the level of liquid on the section and a downwardly projecting extension of the weir depends into liquid on a lower platform. As shown in Fig. 2 which is an expanded drawing of a portion of a column comprising three platforms A, B and C, each platform having sector-shaped imperforate sections a and e, perforate sector-shaped sections b and f and open sector-shaped sections b 1 and f 1 . Weirs c and g are provided in sections band f, downward extensions of the weirs providing a retaining wall d for liquid on the imperforate sections a and e of platform B and depending into liquid on the platform C and forming a gas seal preventing gas by-passing portions of the column. In a modification when a large volume of liquid is fed to the apparatus the weirs c and g are dispensed with, the retaining walls d finishing flush with the surface of the perforate sections b and f. In a further modification the various sections are annular, the liquid flowing from the periphery of the platform towards the middle of the platform on one platform and vice versa on the succeeding platform.