Thermal apparatus and process for removing contaminants from...

Details Thermal apparatus and process for removing contaminants from... Thermal apparatus and process for removing contaminants from...

C - Chemistry, Metallurgy

10

M

C10M 175/00 (2006.01) B01J 19/28 (2006.01) C10B 1/10 (2006.01) C10B 47/30 (2006.01) C10B 55/02 (2006.01) C10B 55/04 (2006.01) C10G 9/28 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2186658

Used oil is treated in a reactor to remove contaminants. The reactor comprises a rotating vessel forming an internal reaction chamber. The vessel is housed within a heating chamber. The inside of the vessel is indirectly heated by conduction through the vessel walls. The reaction chamber contains a permanently resident charge of non-ablating, granular coarse solids. Within the reaction chamber, the oil is vaporized and pyrolyzed, producing a hydrocarbon vapour. Coke is formed as a byproduct. Contaminants, such as metals and halides become associated with the coke. The coarse solids scour and comminute the coke to form fine solids. The fine solids are separated within the reaction chamber from the coarse solids and are removed from the vessel through a pipe located at the axis of the vessel. The hydrocarbon vapours are also removed from the vessel through the axial pipe, as a separate stream. Residual fine solids are separated in a cyclone from the vapour stream. The cleaned vapour stream is then condensed to produce a substantially contaminant free product oil. The contaminant-rich solids are collected for disposal.

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