EP2111436B1 - Method for separating mixtures - Google Patents

Method for separating mixtures Download PDF

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Publication number
EP2111436B1
EP2111436B1 EP08717388.6A EP08717388A EP2111436B1 EP 2111436 B1 EP2111436 B1 EP 2111436B1 EP 08717388 A EP08717388 A EP 08717388A EP 2111436 B1 EP2111436 B1 EP 2111436B1
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Prior art keywords
bitumen
salt melt
salt
sand
oil
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EP08717388.6A
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German (de)
French (fr)
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EP2111436A1 (en
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Oskar Blöchinger
Roger Reichmuth
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REICHMUTH, ROGER
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen
    • C10C3/007—Working-up pitch, asphalt, bitumen winning and separation of asphalt from mixtures with aggregates, fillers and other products, e.g. winning from natural asphalt and regeneration of waste asphalt
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof

Definitions

  • the present invention relates to a process for the separation of mixtures, e.g. the separation of road asphalt pavement break-up in bitumen and the remaining constituents or for separating oil sands in oil and sand.
  • bitumen contained fulfills no task.
  • the remaining part of the bitumen-containing surfacing material is added to the new material on surfacing plants up to a maximum of 50%.
  • the restriction to a maximum of 50% is based on the fact that the composition of the material to be dredged is not precisely defined.
  • bitumen reclamation is required for environmental and economic reasons.
  • US 5,770,049 and US 4 587 005 disclose a generic method of separation using aqueous salt solutions.
  • US 4,132,630 discloses for this purpose the use of a mixture of salt and hydrocarbon oil.
  • US 3,846,276 and WO 02/102717 disclose a generic device.
  • Object of the present invention is therefore to provide a method for the separation of mixtures such as road surface break-up in bitumen and stone material or for the separation of oil sand and sand, or the rest of the rock.
  • the salt melt have a temperature of greater than 130 ° C, and for the molten salt, a nitrite-free, heat-conducting salt with a low melting point can be used.
  • the paving break through the molten salt is passed, wherein the bitumen dissolves the stone material, floats and is skimmed off the salt melt.
  • the sunken in the molten salt virtually bitumen-free stone material is discharged.
  • the road surface breakup crushed with a predetermined refractive power, preferably up to max. 32 mm, the molten salt is supplied.
  • a device for carrying out said method is characterized by a heatable, preferably channel-shaped basin for receiving and liquefying a nitrite-free, heat-conducting salt with a low melting point, preferably a mixture of LiNO 3 / KNO 3 (lithium nitrate / potassium nitrate), for producing a molten salt, upstream with the pool supply means for the pavement break-up with predetermined refractive power, arranged with a, arranged in the basin conveyor screw for transporting the road surface break through the molten salt and arranged at the end of the passage of the basin Abwegsch for skimming and forwarding of the dissolved stone material from the departure and floating on the molten salt Bitumen, as well as arranged at the end of the passage of the basin discharge means for the sunken in the molten salt bitumen-free stone material.
  • a heatable, preferably channel-shaped basin for receiving and liquefying a nitrite-free, heat-conducting salt with a low melting point
  • an advantageous embodiment is that salt mixture fed through a metering device the trough-shaped basin to compensate for the reduced by skimming and discharging the volume of molten salt.
  • the metering device can be controlled and regulated via sensors which measure the level and associated electronics.
  • the temperature of the melt decreases due to natural heat loss, but above all by the supply of relatively cold road eruption but also by the skimming of the bitumen and discharge. Extracting the stone material.
  • the temperature of the melt is controlled by temperature sensors, which measure this temperature and with associated electronics, the heating of the melt.
  • an electronic control and regulating system which the metering device for the melt, the heater, the feed system for outbreak, the overburden for the top floating bitumen, the discharge device for the stone material from the basin or only some of it controls and controls.
  • the sand or rock sinks to the bottom of the basin and the oil floats on the melt. Accordingly, the oil that floats on the melt must be drained off and the sand or rock sunken on the ground must be pumped out of the basin.
  • the device for the recovery of bitumen from road surface (asphalt) departure comprises a heatable, preferably channel-shaped basin 1 for receiving and liquefying a nitrite-free, heat-conducting salt with a low melting point, preferably a mixture of LiNO 3 / KNO 3 (lithium nitrate / potassium nitrate), for It is advantageous if the molten salt is brought to a temperature of about 180 to 200 ° C in order to dissolve the bitumen as completely as possible from the other components of the road surface departure (usually minerals).
  • the basin 1 is one or more feeders 3, 4 for the road surface break-up if possible with a predetermined refractive power, preferably up to 32 mm, upstream, which include a silo 3 and a discharge belt 4.
  • the basin leash screw conveyor 5 is arranged for transporting the road surface breakup 30 through the molten salt 2.
  • one or more overburden facilities in the form of a overburden belt 6 are arranged for skimming and forwarding of the dissolved stone material from the departure at the end of the passage of the basin and on the molten salt floating bitumen 8.
  • the salt 20 can be supplied to the trough-shaped basin 1 via a metering device 10, this metering device being controlled and regulated for volume compensation of the volume of molten salt reduced by skimming and discharging via filling-in sensor 11 in the basin 1. Furthermore, the heater 12 is controlled and regulated for the heatable channel-shaped basin 1 for temperature compensation of the reduced by skimming and discharging temperature of the molten salt via temperature sensor 13 in the basin 1.
  • the metering device 10 and also the heater 12 are controlled and controlled by the programmable electronic control system 14.
  • the programmable electronic control system 14 can be with the programmable electronic control system 14 and the drive for the Discharge belt 4, the overburden belt 6 and the ascending screw conveyor 7 can also be controlled and regulated by the electronic control electronics (not shown).
  • the molten salt can also be prepared outside the gutter and then fed to the gutter. It is also possible to use salts of other chemical formulas and in other mixtures.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Civil Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Analytical Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Road Paving Structures (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Road Paving Machines (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Trennung von Gemischen, wie z.B. das Trennen von Strassen-Asphalt Belagaufbruch in Bitumen und die übrigen Bestandteile oder zum Trennen von Ölsand in Öl und Sand.The present invention relates to a process for the separation of mixtures, e.g. the separation of road asphalt pavement break-up in bitumen and the remaining constituents or for separating oil sands in oil and sand.

Im Bereich der Sanierungen von Asphalt-Strassen ist Stand der Technik, den Strassenaufbruch mit vorgegebenem Brechwert zu brechen und zumindest teilweise als Kiesersatz einzusetzen. Der enthaltene Bitumen erfüllt dabei keine Aufgabe. Der verbleibende Teil des bitumenhaltigen Belagmaterials hingegen wird auf Belagaufbereitungsanlagen bis zu maximal 50 % dem Neumaterial beigegeben. Die Beschränkung auf maximal 50 % wird damit begründet, dass die Zusammensetzung des Aufbruchmaterials nicht genau definiert ist.In the field of redevelopment of asphalt roads, the state of the art is to break the road with a predetermined breaking point and at least partially use it as a gravel replacement. The bitumen contained fulfills no task. On the other hand, the remaining part of the bitumen-containing surfacing material is added to the new material on surfacing plants up to a maximum of 50%. The restriction to a maximum of 50% is based on the fact that the composition of the material to be dredged is not precisely defined.

In Anbetracht des Umstandes aber, dass Bitumen ein Erdölderivat ist und nicht ohne weiteres anders hergestellt werden kann, drängt sich aus ökologischen und ökonomischen Gründen eine Rückgewinnung des Bitumen auf. GB 163 519 , US 4 270 609 , US 5 770 049 und US 4 587 005 offenbaren ein gattungsgemässes Verfahren zur Trennung unter Verwendung von wässrigen Salzlösungen. US 4 132 630 offenbart hierzu die Verwendung einer Mischung von Salz und Kohlenwasserstofföl. US 3 846 276 und WO 02/102717 offenbaren eine gattunsgemässe Vorrichtung.However, considering that bitumen is a derivative of petroleum and can not be readily manufactured differently, bitumen reclamation is required for environmental and economic reasons. GB 163 519 . US 4,270,609 . US 5,770,049 and US 4 587 005 disclose a generic method of separation using aqueous salt solutions. US 4,132,630 discloses for this purpose the use of a mixture of salt and hydrocarbon oil. US 3,846,276 and WO 02/102717 disclose a generic device.

Beim Trennen von Ölsand geht es darum, das darin enthaltene Erdöl vom Gestein, bzw. vom Sand zu trennen.When separating oil sands, it is about separating the oil contained therein from the rock, or from the sand.

Aufgabe der vorliegenden Erfindung ist deshalb die Schaffung eines Verfahrens zur Trennung von Gemischen wie Strassenbelagaufbruch in Bitumen und Steinmaterial oder zur Trennung von Ölsand und Sand, bzw. dem übrigen Gestein.Object of the present invention is therefore to provide a method for the separation of mixtures such as road surface break-up in bitumen and stone material or for the separation of oil sand and sand, or the rest of the rock.

Dieses Verfahren zeichnet sich erfindungsgemäss durch die Merkmale im kennzeichnenden Teil des unabhängigen Anspruchs 1 aus.This method is characterized according to the invention by the features in the characterizing part of the independent claim 1.

Die abhängigen Ansprüche beziehen sich auf vorteilhafte Weiterentwicklungen des Verfahrens.The dependent claims relate to advantageous developments of the method.

Hierbei kann in einer weiteren Ausgestaltung der Erfindung die Salzschmelze eine Temperatur von grösser 130 °C aufweisen, und für die Salzschmelze ein nitritfreies, wärmeleitendes Salz mit niedrigem Schmelzpunkt verwendet werden.In this case, in a further embodiment of the invention, the salt melt have a temperature of greater than 130 ° C, and for the molten salt, a nitrite-free, heat-conducting salt with a low melting point can be used.

Weiter besteht eine vorteilhafte Ausgestaltung der Erfindung, wenn für die Salzschmelze ein Gemisch aus LiNO3 / KNO3 (Lithiumnitrat/Kaliumnitrat) verwendet wird.Furthermore, there is an advantageous embodiment of the invention, when a mixture of LiNO 3 / KNO 3 (lithium nitrate / potassium nitrate) is used for the molten salt.

Ferner ist es vorteilhaft, wenn für die Rückgewinnung des Bitumen der Strassenbelag-Aufbruch durch die Salzschmelze hindurchgeführt wird, wobei sich das Bitumen vom Steinmaterial löst, aufschwimmt und von der Salz- Schmelze abgeschöpft wird. Am Ende der Hindurchführung wird das in der Salzschmelze abgesunkene, praktisch bitumenfreie Steinmaterial ausgetragen wird. Hierfür ist es von Vorteil, wenn der Strassenbelag-Aufbruch zerkleinert, mit einem vorgegebenen Brechwert, vorzugsweise bis max. 32 mm, der Salzschmelze zugeführt wird.Furthermore, it is advantageous if, for the recovery of the bitumen, the paving break through the molten salt is passed, wherein the bitumen dissolves the stone material, floats and is skimmed off the salt melt. At the end of the passage, the sunken in the molten salt, virtually bitumen-free stone material is discharged. For this purpose, it is advantageous if the road surface breakup crushed, with a predetermined refractive power, preferably up to max. 32 mm, the molten salt is supplied.

Durch diese erfindungsgemässen Massnahmen ist eine praktisch hundertprozentige Rückgewinnung des Bitumen aus dem Abraum-Asphalt des Aufbruchs möglich. Das rückgewonnene Bitumen wird dann in bekannter Weise weiterverarbeitet.By means of these measures according to the invention, a virtually 100% recovery of the bitumen from the overburden asphalt of the riser is possible. The recovered bitumen is then further processed in a known manner.

Eine Einrichtung zur Durchführung des genannten Verfahrens zeichnet sich aus durch ein heizbares, vorzugsweise rinnenförmiges Becken zur Aufnahme und Verflüssigung eines nitritfreien, wärmeleitenden Salzes mit niedrigem Schmelzpunkt, vorzugsweise eines Gemisches aus LiNO3 / KNO3 (Lithiumnitrat/Kaliumnitrat), zur Herstellung einer Salzschmelze, mit dem Becken vorgeschalteten Zuführmitteln für den Strassenbelag-Aufbruch mit vorgegebenem Brechwert, mit einer, im Becken angeordneten Förderschnecke zum Transport des Strassenbelag-Aufbruches durch die Salzschmelze und mit am Ende der Durchlaufstrecke des Beckens angeordnete Abraummittel zum Abschöpfen und Weiterleiten des vom Steinmaterial des Aufbruches gelösten und auf der Salzschmelze aufschwimmenden Bitumens, sowie am Ende der Durchlaufstrecke des Beckens angeordnete Austragungsmittel für das in der Salzschmelze abgesunkene bitumenfreie Steinmaterial.A device for carrying out said method is characterized by a heatable, preferably channel-shaped basin for receiving and liquefying a nitrite-free, heat-conducting salt with a low melting point, preferably a mixture of LiNO 3 / KNO 3 (lithium nitrate / potassium nitrate), for producing a molten salt, upstream with the pool supply means for the pavement break-up with predetermined refractive power, arranged with a, arranged in the basin conveyor screw for transporting the road surface break through the molten salt and arranged at the end of the passage of the basin Abwegmittel for skimming and forwarding of the dissolved stone material from the departure and floating on the molten salt Bitumen, as well as arranged at the end of the passage of the basin discharge means for the sunken in the molten salt bitumen-free stone material.

Hierbei besteht eine vorteilhafte Ausgestaltung darin, dass Salzgemisch über eine Dosiereinrichtung dem rinnenförmigen Becken zugeleitet um das durch Abschöpfen und Austragen verringerte Volumen der Salzschmelze auszugleichen. Die Dosiereinrichtung kann über Fühler, welche den Füllstand messen und zugehöriger Elektronik gesteuert und geregelt werden. Die Temperatur der Schmelze sinkt durch natürlichen Wärmeverlust aber vor allem durch das Zuführen von relativ kaltem Strassenausbruch aber auch durch das Abschöpfen des Bitumen und Austragen d.h. Herausfördern des Steinmaterials. Die Temperatur der Schmelze wird mit Temperaturfühlern, welche diese Temperatur messen und mit zugehöriger Elektronik die Heizung der Schmelze regeln.Here, an advantageous embodiment is that salt mixture fed through a metering device the trough-shaped basin to compensate for the reduced by skimming and discharging the volume of molten salt. The metering device can be controlled and regulated via sensors which measure the level and associated electronics. The temperature of the melt decreases due to natural heat loss, but above all by the supply of relatively cold road eruption but also by the skimming of the bitumen and discharge. Extracting the stone material. The temperature of the melt is controlled by temperature sensors, which measure this temperature and with associated electronics, the heating of the melt.

Für einen möglichst vollständig automatischen oder teilautomatischen Betrieb der Einrichtung ist es zweckmässig, wenn eine elektronische Steuer- und Regelanlage vorhanden ist, welche die Dosiereinrichtung für die Schmelze, die Heizung, die Zuführanlage für Ausbruch, die Abraum für das obenauf schwimmende Bitumen, die Austrageinrichtung für das Steinmaterial aus dem Becken oder nur einzelne davon regelt und steuert.For a completely automatic or partially automatic operation of the device, it is expedient if an electronic control and regulating system is present, which the metering device for the melt, the heater, the feed system for outbreak, the overburden for the top floating bitumen, the discharge device for the stone material from the basin or only some of it controls and controls.

Wird die Vorrichtung zum Verarbeiten von Ölsand verwendet, sinkt der Sand oder das Gestein auf den Boden des Beckens und das Erdöl schwimmt auf der Schmelze. Entsprechend muss das Erdöl, das auf der Schmelze schwimmt abgelassen werden und der auf den Boden abgesunkene Sand bzw. das Gestein, aus dem Becken gefördert werden.When the device is used to process oil sands, the sand or rock sinks to the bottom of the basin and the oil floats on the melt. Accordingly, the oil that floats on the melt must be drained off and the sand or rock sunken on the ground must be pumped out of the basin.

Eine beispielsweise Ausführungsform ist nachfolgend anhand der Zeichnung näher erläutert.An exemplary embodiment is explained in more detail below with reference to the drawing.

Es zeigen

  • Fig. 1 im Blockschema die Einrichtung und
  • Fig. 2 einen Schnitt durch die Einrichtung entlang der Schnittlinie Il - Il in Fig. 1.
Show it
  • Fig. 1 in the block diagram the device and
  • Fig. 2 a section through the device along the section line Il - Il in Fig. 1 ,

Die Einrichtung zur Rückgewinnung von Bitumen aus Strassenbelag-(Asphalt) Aufbruch umfasst ein heizbares, vorzugsweise rinnenförmiges Becken 1 zur Aufnahme und Verflüssigung eines nitritfreien, wärmeleitenden Salzes mit niedrigem Schmelzpunkt, vorzugsweise eines Gemisches aus LiNO3 / KNO3 (Lithiumnitrat/Kaliumnitrat), zum Herstellen der Salzschmelze 2. Hierbei ist es vorteilhaft, wenn die Salzschmelze auf eine Temperatur von ca. 180 bis 200 °C gebracht wird, um das Bitumen von den übrigen Komponenten des Strassenbelag-Aufbruches (in der Regel Mineralstoffe) möglichst vollständig loszulösen.The device for the recovery of bitumen from road surface (asphalt) departure comprises a heatable, preferably channel-shaped basin 1 for receiving and liquefying a nitrite-free, heat-conducting salt with a low melting point, preferably a mixture of LiNO 3 / KNO 3 (lithium nitrate / potassium nitrate), for It is advantageous if the molten salt is brought to a temperature of about 180 to 200 ° C in order to dissolve the bitumen as completely as possible from the other components of the road surface departure (usually minerals).

Dem Becken 1 sind eine oder mehrere Zuführeinrichtungen 3, 4 für den Strassenbelag-Aufbruch wenn möglich mit vorgegebenem Brechwert, vorzugsweise bis 32 mm, vorgeschaltet, welche ein Silo 3 und ein Austragungsband 4 umfassen.The basin 1 is one or more feeders 3, 4 for the road surface break-up if possible with a predetermined refractive power, preferably up to 32 mm, upstream, which include a silo 3 and a discharge belt 4.

Weiter ist im Becken leine Förderschnecke 5 angeordnet zum Transport des Strassenbelag-Aufbruches 30 durch die Salzschmelze 2. Ferner sind am Ende der Durchlaufstrecke des Beckens 1 eine oder mehrere Abraumeinrichtungen in Form eines Abraumbandes 6 angeordnet zum Abschöpfen und Weiterleiten des sich vom Steinmaterial des Aufbruches gelösten und auf der Salzschmelze aufschwimmenden Bitumen 8. Weiter sind am Ende der Durchlaufstrecke des Beckens 1 eine oder mehrere Austragungseinrichtungen in Form einer Steigförderschnecke (Fig. 2) für das in der Salzschmelze abgesunkene bitumenfreie Steinmaterial 9 angeordnet.Further, in the basin leash screw conveyor 5 is arranged for transporting the road surface breakup 30 through the molten salt 2. Furthermore, one or more overburden facilities in the form of a overburden belt 6 are arranged for skimming and forwarding of the dissolved stone material from the departure at the end of the passage of the basin and on the molten salt floating bitumen 8. Further, at the end of the passage of the basin 1 one or more discharge facilities in the form of a screw conveyor screw ( Fig. 2 ) arranged for the sunken in the molten salt bitumen stone material 9.

Das Salz 20 ist über eine Dosiereinrichtung 10 dem rinnenförmigen Becken 1 zuleitbar, wobei diese Dosiereinrichtung zum Volumenausgleich des durch das Abschöpfen und Austragen verringerten Volumens der Salzschmelze über Fülltandsfühler 11 im Becken 1 gesteuert und geregelt wird. Ferner ist die Heizung 12 für das heizbare rinnenförmige Becken 1 zum Temperaturausgleich der durch das Abschöpfen und Austragen verringerten Temperatur der Salzschmelze über Temperaturfühler 13 im Becken 1 gesteuert und geregelt. Die Dosiereinrichtung 10 und auch die Heizung 12 werden mit der programmierbaren elektronischen Steuer- und Regelanlage 14 geregelt und gesteuert. Weiter können mit der programmierbaren elektronischen Steuer- und Regelanlage 14 auch der Antriebs für das Austragband 4, das Abraumband 6 und die Steigförderschnecke 7 können ebenfalls von der elektronischen Steuer- und Regelelektronik gesteuert und geregelt (nicht gezeigt).The salt 20 can be supplied to the trough-shaped basin 1 via a metering device 10, this metering device being controlled and regulated for volume compensation of the volume of molten salt reduced by skimming and discharging via filling-in sensor 11 in the basin 1. Furthermore, the heater 12 is controlled and regulated for the heatable channel-shaped basin 1 for temperature compensation of the reduced by skimming and discharging temperature of the molten salt via temperature sensor 13 in the basin 1. The metering device 10 and also the heater 12 are controlled and controlled by the programmable electronic control system 14. Next can be with the programmable electronic control system 14 and the drive for the Discharge belt 4, the overburden belt 6 and the ascending screw conveyor 7 can also be controlled and regulated by the electronic control electronics (not shown).

Diese Massnahmen gestatten eine weitgehende Automatisierung der Einrichtung zur Rückgewinnung von Bitumen aus Strassenbelag-(Asphalt)-Aufbruch bzw. zum Trennen von Öl und Gestein, bzw. Sand aus Ölsand.These measures allow a high degree of automation of the device for the recovery of bitumen from road surface (asphalt) breakup or for separating oil and rock, or sand from oil sands.

Selbstverständlich sind im Rahmen dieser Erfindung Ausführungsvarianten möglich, ohne den Erfindungsgedanken zu verlassen.Of course, in the context of this invention, embodiments are possible without departing from the spirit.

Beispielsweise kann die Salzschmelze auch ausserhalb der Rinne zubereitet und dann der Rinne zugeführt werden. Ferner können auch Salze anderer chemischer Formeln und in anderen Gemischen Verwendung finden.For example, the molten salt can also be prepared outside the gutter and then fed to the gutter. It is also possible to use salts of other chemical formulas and in other mixtures.

Es wird Schutz beansprucht wie folgt:Protection is claimed as follows:

Claims (5)

  1. A method for recovering bitumen from road surfacing breakup (30) or for separating oil sand into oil and sand, or stone, characterized in that the bitumen-containing surfacing breakup or the oil sand is brought into a salt melt (2), wherein bitumen or oil floats on the salt melt (2) and is skimmed off from the salt melt (2) after being passed through the salt melt (2), and wherein the stone material or the sand/stone sink in the salt melt (2) and are discharged.
  2. The method as claimed in claim 1, in which the temperature of the salt melt (2) is greater than 130°C, preferably 180°C to 200°C.
  3. The method as claimed in one of claims 1 to 2, in which a nitrite-free, heat-conducting salt having a low melting point is used for the salt melt (2).
  4. The method as claimed in one of claims 1 to 3, in which the salt melt (2) is a mixture of LiNO3/KNO3.
  5. The method as claimed in one of claims 1 to 4, in which the road surfacing breakup (30) or oil sand is fed to the salt melt (2) with a predetermined breaking value, preferably to a maximum part size of 32 mm.
EP08717388.6A 2007-03-12 2008-03-04 Method for separating mixtures Active EP2111436B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3972007A CH699441B1 (en) 2007-03-12 2007-03-12 Method and apparatus for recovery of bitumen from Strassenbelag- (asphalt) breakup.
PCT/EP2008/052632 WO2008110486A1 (en) 2007-03-12 2008-03-04 Method and device for separating mixtures

Publications (2)

Publication Number Publication Date
EP2111436A1 EP2111436A1 (en) 2009-10-28
EP2111436B1 true EP2111436B1 (en) 2019-06-05

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EP (1) EP2111436B1 (en)
CA (1) CA2679729C (en)
CH (1) CH699441B1 (en)
WO (1) WO2008110486A1 (en)

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US8562247B2 (en) 2009-01-02 2013-10-22 Heatwurx, Inc. Asphalt repair system and method
US8556536B2 (en) 2009-01-02 2013-10-15 Heatwurx, Inc. Asphalt repair system and method
DE102009052664A1 (en) * 2009-11-12 2011-05-19 Kemna Bau Andreae Gmbh & Co Kg Extracting bitumen from bituminous materials, useful for producing roofing pave, sealing pave and asphalt, comprises heating the bituminous material, crushing the materials, and processing the crushed material
US8801325B1 (en) 2013-02-26 2014-08-12 Heatwurx, Inc. System and method for controlling an asphalt repair apparatus
US9416499B2 (en) 2009-12-31 2016-08-16 Heatwurx, Inc. System and method for sensing and managing pothole location and pothole characteristics
EP2546003B1 (en) 2011-07-13 2018-03-07 Roger Reichmuth Method and device for separating roadsurface - asphalt or oilsand mixtures
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CA2679729C (en) 2015-06-23
WO2008110486A1 (en) 2008-09-18
EP2111436A1 (en) 2009-10-28
CA2679729A1 (en) 2008-09-18
CH699441B1 (en) 2010-03-15

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