Abstract: The apparatus has a column (1) of closed interior. Pipe (7b) leading into its upper part to admit liquid of higher density, and pipe (7a) leading into the lower part to admit liquid of lower density. Pipes (8, 10) emerge from the lower part to discharge liquid of higher density, and from its upper part to discharge liquid of lower density. Level control and propelling force adjusting mechanism (9) is connected with the pipe discharging liquid of higher density. Dispersing-mixing elements surrounding cells are beneath and above each other in the column (1). Pulsator (4) is connected with the lower part of column (1). The dispersing-mixing elements are formed by discs (5) having elastic tongues (13a) in the plane of discs capable for vibration and to move out of the disc's plane during vibration, and gap (14) runs along the periphery of the tongues (13a).

Abstract: The packing of a tower or column for heat exchange, material exchange, contacting of two fluids with one another and chemical reaction consisting of a stack of elongated members having two walls inclined to one another and joined at a third wall, the first two walls are each formed with elongated vibratile elements interdigitated with vibratile elements of another packing member so that when the body of packing is traversed by one or more fluids, the vibratile elements are set into vibration.

Abstract: A fluid is introduced into a bed of a material to be fluidized along the bottom surface thereof at a pulsating velocity which is by an order of magnitude greater than the velocity of fluidization.Such method can be carried out in a fluidization apparatus having a per se known distributor the orifices of which are overlapped by reeds which vibrate when a pressure fluid is introduced into a bed above the distributor.

Abstract: A fluid transmitting element, particularly for increasing vapor-liquid contact, comprises a continuously open element which is resiliently deformable to open still farther under the pressure of a fluid stream. The element is a plate or tray which comprises a fluid barrier, and has a plurality of resilient interfingering strips. Means are provided which permit opening of the element in only one direction.