A multi-stage process for treating bitumen froth using a...

B - Operations – Transporting – 03 – B

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B03B 5/28 (2006.01) B03B 5/44 (2006.01) B03B 9/02 (2006.01) C10G 1/04 (2006.01)

Patent

CA 2640914

A process for treating a bitumen froth containing bitumen, solid mineral material and water, including subjecting a first mixture containing the bitumen froth and a first amount of a paraffinic solvent to first gravity separation, thereby producing a first overflow stream and a first underflow stream, wherein the first gravity separation is performed so that the first underflow stream contains between about 5 percent and about 40 percent by weight of the asphaltenes contained in the first mixture. A second mixture containing the first underflow stream and a second amount of the paraffinic solvent is subjected to second gravity separation in order to recover bitumen from the first underflow stream.

Divulgation d'un procédé pour traiter une mousse de bitume contenant du bitume, des matières minérales solides et de l'eau. Ce procédé comprend la soumission d'un premier mélange contenant la mousse de bitume et d'une première quantité d'un solvant paraffinique à une séparation par gravité, produisant ainsi un premier circuit de surverse et un premier circuit de sousverse, la première séparation par gravité étant réalisée de manière à ce que le premier circuit de sousverse contienne entre environ 5 et environ 40 pour cent en poids des asphaltènes contenus dans le premier mélange. Un deuxième mélange contenant le premier circuit de sousverse et une deuxième quantité du solvant paraffinique est soumis à une deuxième séparation par gravité afin de récupérer le bitume du premier circuit de sousverse.

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