A method for effecting enhanced contact between two immiscible liquid of different electrical conductivities comprises applying both intense mechanical agitation (1) and, in an immediately adjacent zone, a varying electrostatic field (2), in order to effect rapid change of their liquid-liquid interfaces but maintaining droplet size of a desirably high magnitude at least outside the zone of the intense agitation. The method may be applied to, for instance, liquid-liquid extraction. Apparatus is a...

In a non-agitational, countercurrent flow type of liquid-liquid contacting tower, splitter plates with plural slits and/or holes through which light and heavy liquids flow, and baffles having the appropriate shapes and areas in order to cover the liquid flowing upward or downward, are alternately mounted horizontally inside the tower shell in vertical direction. The ratios of the opening area to the total cross-sectional area in the splitter plate are 10% to 40%, and the opening area of a baffle...

A liquid chromatograph and chromatography which can perform analysis at a higher speed with clearer separation between peaks. The liquid chromatograph comprises a separation column (10), a buffer pump (7) for feeding a plurality of buffers 1, 2, 3 and 4 into the separation column (10), a sampler (9) disposed in a flow path between the buffer pump (7) and the separation column (10) for introducing a sample to be analyzed into the flow path, and a reaction coil (14) for mixing and then reacting am...

Method/apparatus for extracting substance from carrier liquid in first container into an immiscible extraction liquid of different density in second container receiving and locating the first. Substance transfers to extraction liquid at liquids admixture in second container aided by flow control and fine division of carrier liquid force supplied into extraction liquid. Separated liquids receive separator member cooperating with second container as physical barrier with only separated extraction ...

Liquid-liquid extraction apparatus includes an extractor unit where a first liquid contacts a second liquid so a component is transferred from the first liquid to the second liquid. The extractor unit has an inlet for the first liquid with the component in it, and an outlet for the first liquid from which the component has been removed. The extractor unit also includes an inlet for a second liquid to which component is transferred from the first, and an outlet for second liquid to which componen...

In a non-agitated, countercurrent flow type liquid-liquid contacting tower, trays consisting of column plates and dams are installed horizontally inside the tower shell alternately in vertical direction with a suitable interval. The column plate share a part of the cross-section of the tower to provide a flow channel or channels for the liquids, and the dam extends from the end of the column plate vertically downward and has openings near the column plate. The liquid-liquid contactor has high co...

A process is described for continuously extracting a first liquid with a second liquid, the two liquids being capable of forming two separate phases defining a liquid-liquid interface. The process comprises contacting the two liquids in an apparatus defining a plurality of mixing chambers and at least one settling chamber, wherein the liquids are continuously agitated in the mixing chambers to provide mixing in a zone in the proximity of the liquid-liquid interface while maintaining substantial ...

A method for extracting nickel from aqueous solutions thereof which contain large amounts of alkali metal ions by contacting the aqueous solution with an extraction agent comprising an organic solution of di-2-ethylhexyl phosphoric acid and naphthenic acid.

An apparatus for performing liquid-liquid contacting operations, such as the extraction of mercaptans from hydrocarbons. The apparatus comprises a metal sphere which is retained in position above a mating valve seat in the upper open end of a vertical collar by a vertical retention cage. The collar extends through a horizontal plate, and a first liquid passes upward through a vertical bore in the collar to lift the sphere and contact a second liquid retained above the horizontal plate.

An apparatus and method are disclosed for effecting liquid-liquid contact. An aqueous medium and an organic hydrophobic liquid medium are fed to a mixing chamber in which a "primary" dispersion, capable of disengaging sustantially completely into two separate layers on standing under gravity, is formed by suitable mixing means. Dispersion is allowed to flow upwardly and downwardly from the mixing chamber into upper and lower baffled zones positioned immediately above and below the mixing chamber...