Title:
IN-DRUM PYROLYSIS SYSTEM
Document Type and Number:
WIPO Patent Application WO2004036117
Kind Code:
A3
Abstract:
An apparatus and method for processing hazardous wastes directly from 55-gallon drums through the use of pyrolysis and steam reforming. The method is based on a pyrolyzer (10) using heat to vaporize organics that are present in the hazardous wastes. The waste is heated in the original drums (24) to avoid the bulk handling of alpha radionuclides and to ensure criticality control. At pyrolysis temperatures, all liquids and organics in the drums evaporate and volatize. The resulting waste in the drums is a dry, inert, inorganic matrix with carbon char containing radioactive metals. The off-gas produced by pyrolysis mainly consists of water vapor, volatized organics, and acid gases from the decomposition of various plastics and other organics present in the waste drums. The off-gas produced by the pyrolysis is then collected and fed into an off-gas treatment system (80) that is in fluid communication with pyrolyzer (10) operated under oxidizing conditions.
Inventors:
MASON J BRADLEY (US)
Application Number:
PCT/US2003/023745
Publication Date:
January 13, 2005
Filing Date:
July 30, 2003
Export Citation:
Assignee:
STUDSVIK INC (US)
MASON J BRADLEY (US)
MASON J BRADLEY (US)
International Classes:
B01D53/75; C10B47/46; F23G5/00; F23G5/027; (IPC1-7): A62D3/00; G21F9/00
Foreign References:
| US4977839A | 1990-12-18 | |||
| US5545798A | 1996-08-13 | |||
| US4654172A | 1987-03-31 | |||
| US4987313A | 1991-01-22 | |||
| US5839206A | 1998-11-24 | |||
| US4419943A | 1983-12-13 |
Other References:
See also references of EP 1539302A4
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