Thermolysis of pentachlorophenol treated poles

Details Thermolysis of pentachlorophenol treated poles Thermolysis of pentachlorophenol treated poles

B - Operations, Transporting

01

D

B01D 1/14 (2006.01) B09B 3/00 (2006.01) B27K 3/00 (2006.01) C10B 53/02 (2006.01)

Patent

CA 2099318

ABSTRACT This invention comprises a method and apparatus for removing oil and tar based wood preservatives from sawdust. A pole treated with oil or tar based wood preservative is shaved to remove the treated outer wood layer, leaving the interior preservative free. The sawdust is subjected to rapid heating in a turbulent oxygen-free gas stream and the oil and tar are rapidly distilled from the sawdust. The sawdust and gas are separated in a mechanical separator and the hot gas is rapidly cooled, condensed and recovered.

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