Patent DE-102011016190-A1 (DE)
Title: Demixing and separation of a mixture in a solid phase and two liquids not soluble into one another, comprises foaming the mixture under generation of a liquid floating layer from liquids and a sediment layer from solid phase, by air
Inventor: OSSENKOP KAI-UWE
IPC: B01D21/02
Filed: 2011-04-06
Abstract: Demixing and separation of a mixture in at least one solid phase and at least two liquids not soluble into one another, comprises foaming a first amount of the mixture (1), under generation of a liquid floating layer from one of the liquids and a sediment layer from the solid phase, by air to a heterogeneous reaction mixture, introducing further amount of the mixture, continuing the foaming of the mixture until a liquid separation layer consisting of the other liquid, with a predetermined degree of purity is remained, removing e.g. at least the liquid separation layer. Demixing and separation of a mixture in at least one solid phase and at least two liquids not soluble into one another, comprises foaming a first amount of the mixture (1), under generation of a liquid floating layer from one of the liquids and under generation of a sediment layer from the solid phase, by air to a heterogeneous reaction mixture, introducing further amount of the mixture into the reaction mixture, when the floating layer or the sediment layer has a pre-determined layer thickness and the sum of all amounts of the mixture has not reach a capacitance limit, continuing the foaming of the mixture until a liquid separation layer consisting of the other liquid, with a predetermined degree of purity is remained from the heterogeneous reaction mixture, removing at least the liquid separation layer, also removing the liquid floating layer, when one of the predetermined layer thickness is reached, and also removing the solid material-containing sediment layer, when also its predetermined layer thickness is reached. An independent claim is also included for a device for performing the above method, comprising at least one sediment funnel for the absorption of the sedimented solid material and at least a reactor vessel (2), which comprises at least a mixture inlet (3) for the introduction of the mixture, which comprises at least the loading space associated to the mixture inlet for restraining one of the liquids, and at least one floating space (5) located above the loading space for absorption of the respective other liquid. The feed space (4) has at least one ventilation device for foaming the mixture. The reactor vessel has at least one measuring sensor for detecting a filling level of the sedimented solid material for determining a filling level of the floated liquid and for determining a layer thickness of the floated liquid. The feed space has a measuring means arranged at the reactor vessel for determining the degree of purity of the liquid staying in feed space. The measuring sensor system, the measuring means and the aerator are connected over an electronic controller. The reactor vessel comprises at least one liquid outlet. The sediment funnel comprises at least one solid material removal. The mixture inlet, the liquid outlet and the solid material respectively exhibits a shutoff valve attached to the electronic controller.