Active cooling-based surface confinement system for thermal soil treatment
Abstract
A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam injection is used for underground heating, the actively cooled thermal barrier allows the steam to be injected into soil at pressures much higher (20-60 psi) than the confining strength of the soil, while preventing steam breakthrough. The rising steam is condensed to liquid water at the thermal barrier-ground surface interface. The rapid temperature drop forced by the thermal barrier drops the subsurface pressure to below atmospheric pressure. The steam and contaminant vapors are contained by the thermal blanket, which can be made of a variety of materials such as steel plates, concrete slabs, membranes, fabric bags, or rubber bladders.
- Inventors:
-
- Livermore, CA
- Pleasanton, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 871206
- Patent Number(s):
- 5681130
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- active; cooling-based; surface; confinement; thermal; soil; treatment; barrier; disclosed; cooling; control; subsurface; pressures; remediation; shallow; 5-20; feet; underground; contaminants; steam; injection; heating; actively; cooled; allows; injected; 20-60; psi; confining; strength; preventing; breakthrough; rising; condensed; liquid; water; barrier-ground; interface; rapid; temperature; drop; forced; drops; pressure; below; atmospheric; contaminant; vapors; contained; blanket; variety; materials; steel; plates; concrete; slabs; membranes; fabric; bags; rubber; bladders; steam injection; active cooling; liquid water; thermal barrier; atmospheric pressure; ground surface; rapid temperature; actively cooled; oil treatment; thermal remediation; surface confinement; rising steam; temperature drop; /405/62/588/
Citation Formats
Aines, Roger D, and Newmark, Robin L. Active cooling-based surface confinement system for thermal soil treatment. United States: N. p., 1997.
Web.
Aines, Roger D, & Newmark, Robin L. Active cooling-based surface confinement system for thermal soil treatment. United States.
Aines, Roger D, and Newmark, Robin L. Wed .
"Active cooling-based surface confinement system for thermal soil treatment". United States. https://www.osti.gov/servlets/purl/871206.
@article{osti_871206,
title = {Active cooling-based surface confinement system for thermal soil treatment},
author = {Aines, Roger D and Newmark, Robin L},
abstractNote = {A thermal barrier is disclosed for surface confinement with active cooling to control subsurface pressures during thermal remediation of shallow (5-20 feet) underground contaminants. If steam injection is used for underground heating, the actively cooled thermal barrier allows the steam to be injected into soil at pressures much higher (20-60 psi) than the confining strength of the soil, while preventing steam breakthrough. The rising steam is condensed to liquid water at the thermal barrier-ground surface interface. The rapid temperature drop forced by the thermal barrier drops the subsurface pressure to below atmospheric pressure. The steam and contaminant vapors are contained by the thermal blanket, which can be made of a variety of materials such as steel plates, concrete slabs, membranes, fabric bags, or rubber bladders.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}