C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/65
C10G 25/00 (2006.01) B09C 1/06 (2006.01) C02F 11/12 (2006.01) F23G 7/00 (2006.01) F23G 7/14 (2006.01)
Patent
CA 1301693
ABSTRACT OF THE DISCLOSURE Oily sludges containing volatile hydrocarbons are mixed with diatomaceous earth or perlite in a system which includes an indirect dryer for vaporizing liquids have a boiling point of less than about 700°F. Dried solids are discharged from the dryer and conveyed to an oxidation unit comprising a rotary kiln or lift pipe combustor. Dried hydrocarbon free solids are recirculated for mixing with the oily sludge and condensable vapors are condensed and separated for further use or disposal. A system including the indirect dryer, condenser, oxidation unit, separators for the condensate and separators for gaseous products can be modified to receive hydrocarbon contaminated soils and other earth-like materials having particle sizes ranging from as low as 10 microns up to about 1.0 inches.
568446
Beer Gary Lee
Li Ying Hsiao
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
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