C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 1/04 (2006.01)
Patent
CA 2638148
The invention relates to recovery of oil or bitumen from grained material, for instance crushed sediment or tar sand. Examples are the tar sand deposits in Alberta, Canada. The adventages of the invention are produced by the following characteristics: - Extraction of the tar sand in a countercurrent extracting column, in which the sand is moving only by the effect of the gravity or by the effect of streaming liquids. - separation of the grained material by a moving filter, wherein this material is feeding to the filter only by the effect of gravity or streaming liquids, - separation of the product oil from the extract solution by vaporing process - recovery of the solvent by vaporing process. The follow adventages are provided: - Improve the environment protection by reduction of the mass of waste water, - Reduce the energy consumption, - Increase the product output by increasing the oil recovery rate, - Increase the lifetime of the apparatus.
Machlitt Rainer
Na
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