An apparatus for separating immiscible liquids of various density is disclosed, comprising a plurality of pan-shaped elements, wherein all walls (6, 7, 8, 9) of each pan-shaped element (5) are inclined outwards. The pan-shaped elements (5) are arranged so that the distance (h) between bases (10) of the adjacent pan-shaped elements (5) is less than the height of their walls (6, 7, 8, 9). Each arrangement for evacuating one of the phases is fashioned as a substantially vertical passage (16) having...

A liquid-liquid contactor column 10 has a solvent input 16 and an aqueous phase input 22. Lighter phase liquid is discharged at 31 and heavier phase is moved by an air lift 26 to a receiver. The air supply line 28 to the air lift 26 includes valve 32 and a pressure sensing transducer 34 senses pressure in line 28 and sends electric signals to signal processing unit 52 which may for example close down operation of the column, or effect other changes to maintain operating characteristics of the co...

Liquid--liquid extraction apparatus includes a separator tank rotatable about an axis extending through the tank, a tank inlet for a mixture of two liquids of different densities and which are substantially insoluble in each other, a tank outlet on the axis of rotation for the light liquid, and a tank outlet spaced from the axis of rotation for the heavy liquid. In terms of method, a mixture of the two liquids is rotated about an axis extending through the mixture to cause the light liquid to co...

High efficiency in extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column by the provision of an intermediate product drawoff means located between a downstream section of extraction trays having greatest efficiency at low throughputs and an upstream section of trays having peak efficiency at high throughputs. A second product stream is removed after passing through the low flow rate tray...

High efficiency in liquid-liquid extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column by the provision of an intermediate product drawoff means located between a downstream section of extraction trays having greatest efficiency at low throughputs and an upstream section of trays having peak efficiency at high throughputs. A second product stream is removed after passing through the low ...

A liquid-to-liquid heat exchanger adapted especially for use with an automotive vehicle radiator assembly for transferring heat from automatic power transmission fluid to the engine liquid coolant comprising a pair of cylindrical tubes adapted to be positioned in coaxial disposition within the engine radiator heater and a helical turbulator positioned within an annular space defined by the cylindrical tubes, said turbulator comprising a rolled strip with a channel cross-section, said strip being...

An apparatus for separating a mixture of heavier and lighter liquids capable of separating into two separate phases is disclosed. The mixture is passed through confined particle material which, preferably, has an affinity for one of the liquids. The particles are confined in a cylindrically shaped space and the liquids move through the particles in a radial and horizontal direction. The particle material filters the liquids and aids in coalescing the liquid for which the particles have affinity....

In an extraction apparatus for counter-current liquid-liquid extraction having several horizontally displaced extraction stages, each stage includes a mixing chamber with a mechanical mixer and further a settling basin with an auxiliary space connected to the mixing chamber through an opening or a pipe. From the upper part of each settling basin there runs a flow pipe to the upper part of the mixing chamber of the subsequent extraction stage, the lower part of the settling basin being connected ...

An apparatus is provided that is useful for effecting liquid-liquid extraction by contacting a first liquid medium with a substantially immiscible heavier second liquid medium. The apparatus includes either a single mixer-settler unit or two or more such mixer-settler units in series. Each mixer-settler unit includes a vertically extending settling tank. An elongated extraction column extends generally vertically upwardly through the settling tank bottom. The extraction column is open at its top...

Mixing of two liquid phases can be advantageously conducted when the two phases are supplied at steady flow rates. Variations in the rates of supply of the phases are compensated for by pumping each liquid at a constant flow rate higher than the maximum flow rate provided by the supply, and permitting recirculation of disengaged phase in the amount necessary to meet the demand of the system.