B - Operations – Transporting – 09 – C
Patent
B - Operations, Transporting
09
C
B09C 1/02 (2006.01) B01D 21/26 (2006.01) B03B 9/02 (2006.01) B09C 1/00 (2006.01) B09C 1/08 (2006.01) C10G 27/12 (2006.01) C10G 31/06 (2006.01) C10G 31/10 (2006.01) C10G 53/02 (2006.01)
Patent
CA 2313537
Refinery waste feedstock is screened in a screen (14) to remove large particles and is diluted to less than 5 % solids weight percent to form a first slurry which is agitated and heated to 180 degrees Fahrenheit in a conditioning vessel (18). The conditioned first slurry is passed through a first centrifuge (22) which separates the conditioned first slung into a first liquid effluent and a first residual cake. The first residual cake is diluted with hot water and treated with hydrogen peroxide in a reactor tank (26) to form a second slurry and lyre and/or liberate petroleum compounds and oxidize toxic polycyclic aromatic hydrocarbons to non-toxic derivatives. The second slurry is passed through a centrifuge (32), yielding a second liquid effluent and a residual cake containing about 0.5 % or less petroleum and about 70 % solids, which may be landfilled directly or further dewatered as needed.
Continuum Environmental Inc.
Continuum Environmental Llc
Osler Hoskin & Harcourt Llp
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