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Title:
HEATER ELEMENT FOR USE IN AN SITU THERMAL DESORPTION SOIL REMEDIATION SYSTEM
Document Type and Number:
WIPO Patent Application WO2001078914
Kind Code:
A3
Abstract:
An in situ thermal desorption (ISTD) soil remediation system (20) may be used to remove or reduce contamination within soil (24). Heat may be transferred to the soil (24) from resistively heated, bare metal heater elements (56). The heater elements (56) may be placed directly within the soil (24). Alternately, the heater elements (56) may be suspended within casings (60). The heater elements (56) may be conductive heaters, or the heater elements may be radiative heater elements. The ISTD soil remediation system (20) may include temperature-resistant, chemical resistant, flexible conduits that transport off-gas removed from the ground to a treatment facility (34). A residence time of off-gas within the conduits may be sufficient to allow the off-gas to cool so that the off-gas may pass to a treatment facility (34) through a manifold and piping made of polymeric material.

Inventors:
VINEGAR HAROLD J
STEGEMEIER GEORGE LEO
Application Number:
PCT/EP2001/004398
Publication Date:
April 24, 2003
Filing Date:
April 17, 2001
Export Citation:
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Assignee:
SHELL INT RESEARCH (NL)
SHELL CANADA LTD (CA)
International Classes:
B09B3/00; B09C1/06; E21B36/04; H05B3/00; H05B3/03; (IPC1-7): B09C1/06; E21B36/04; H05B3/40
Foreign References:
US6023554A2000-02-08
US5318116A1994-06-07
US5348422A1994-09-20
US5656239A1997-08-12
US5244310A1993-09-14
US4704514A1987-11-03
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