Device and method for separating mixtures which contain oil or bitumen and additives

Abstract

A device and a method for separating mixtures that contain oil or bitumen and additives. The device and the method are applicable in particular to separating stone chippings and bitumen in excavated asphalt road surfaces. In the case of oil sands and oil shale, a mineral phase can be separated from an oil phase and separation of bitumen and carrier felt can be induced in recycling of bitumen felt, oil binder and oil. The individual components of the mixture are separated from one another using a solvent, wherein the solvent takes up the oil or bitumen. The oil and bitumen are subsequently separated from the solvent so that the solvent can be reused.

1 - 20 . (canceled) 
     
     
         21 . A device for separating mixtures which contain oil or bitumen and additives, the device comprising:
 at least one reaction vessel having a reaction space and a feed opening;   at least one capture container having a withdrawal conduit and a riser conduit;   a supply container having a vapor space, the supply container connected with the at least one capture container via the withdrawal conduit, the at least one capture container connected with the vapor space via the riser conduit; and   a condensation vessel connected with the reaction space, the reaction space connected with the supply container.   
     
     
         22 . The device of  claim 21 , further comprising a particle filter within the reaction space. 
     
     
         23 . The device of  claim 21 , further comprising stirrers or ultrasound cleaning devices within the reaction space in order to improve solvent mixing. 
     
     
         24 . The device of  claim 21 , wherein the at least one reaction vessel comprises several reaction vessels arranged in parallel. 
     
     
         25 . The device of  claim 21 , further comprising a discharge conduit connected with the supply container. 
     
     
         26 . The device of  claim 25 , wherein the discharge conduit comprises a siphon. 
     
     
         27 . The device of  claim 21 , wherein the vapor space is connected with the condensation vessel via a conduit. 
     
     
         28 . The device of  claim 27 , further comprising a filling conduit, the condensation vessel connected with the reaction space via the filling conduit. 
     
     
         29 . The device of  claim 21 , wherein the device has a slight vacuum of 5 to 10 mbar below atmospheric pressure. 
     
     
         30 . The device of  claim 21 , wherein the vapor space has a temperature of 60° C. to 65° C. 
     
     
         31 . The device of  claim 21 , wherein the capture container has a temperature of 75° C. to 95° C. 
     
     
         32 . The device of  claim 21 , wherein the condensation vessel has a temperature of 10° C. to 15° C. 
     
     
         33 . The device of  claim 21 , wherein the reaction space comprises a conveying device on which the mixture containing oil or bitumen and additives and solvent are led, the mixture led in a counter-flow to the solvent. 
     
     
         34 . A method for separating mixtures which contain oil or bitumen and additives, the method comprising:
 a) dissolving oil-containing or bitumen-containing constituents out of a mixture in a solvent, in a reaction space;   b) separating the oil-laden or bitumen-laden solvent from additives of the mixture and leading the oil-laden or bitumen-laden solvent into a supply container;   c) vaporizing the oil-laden or bitumen-laden solvent in a capture container connected to the supply container and capturing the oil or bitumen in the capture container, and capturing the solvent vapour in a vapor space of the supply container;   d) leading away the solvent vapor out of the vapour space and condensing the solvent in a condensation vessel.   
     
     
         35 . The method of  claim 34 , wherein solvent comprises dichloromethane, chloroform, diesel, naphtha, acetone, methanol, tetrahydrofurane, butyl methyl ether, carbon tetrachloride, propane gas, benzene or toluene. 
     
     
         36 . The method of  claim 34 , wherein separating the oil-laden or bitumen-laden solvent is controlled or regulated in a temporal manner. 
     
     
         37 . The method of  claim 34 , further comprising heating the reaction space for drying the additives of the mixture and for removing remaining solvent. 
     
     
         38 . The method of  claim 37 , wherein the reaction space is heated for 10 minutes at 60° C. 
     
     
         39 . The method of  claim 34 , further comprising sucking or blowing air through the capture container for accelerating solvent vaporization. 
     
     
         40 . The method of  claim 34 , wherein the mixture comprises bitumen-containing asphalt.