Abstract: Apparatus for the treatment of volatile material(s) in contaminated material(s) including a retort assembly which includes a rotatable retort disposed at least partially within a combustion chamber with a heater to indirectly heat the contents of the rotatable retort. A feeder feeds the contaminated material(s) to the retort. The apparatus further includes a pathway for passing contaminated material(s) to the retort and a conduit for passing the combustion gases from an afterburner to the retort assembly to provide additional heat for heating the contaminated material in the retort. The apparatus may also include a high temperature filter which can filter the volatiles before entering the afterburner.
Type:
Grant
Filed:
September 28, 2000
Date of Patent:
January 29, 2002
Assignees:
Tox Free Systems, Inc., Tox Free Systems Limited
Inventors:
Struan Glen Robertson, Edward Elliot Finsten
Abstract: Toxic wastes and other contaminants are removed from soil which is fed through a passage in an agitating means into a retort (10, 110) where the soil is agitated and brought into contact with the retort walls (11, 111, 111A) (at a temperature preferably above 500.degree. C.) to cause the toxic wastes or contaminates to be desorbed. The "off-gases" from the soil may be mixed with air/fuel in a combustion chamber (31, 131), to heat the retort; may be burnt in a secondary burner (40) to preheat and/or dry the soil feed; or be condensed in a condenser (41) and stored.