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Title: 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. 1 fig.

Inventors:
;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
541717
Patent Number(s):
5,681,130
Application Number:
PAN: 8-603,112
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 540220; PA: EDB-97:142239; SN: 97001865582
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 28 Oct 1997
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; REMEDIAL ACTION; STEAM INJECTION; CONTAINMENT SYSTEMS; TEMPERATURE CONTROL; PRESSURE CONTROL; RESERVOIR PRESSURE; SOILS; DESIGN; VAPOR CONDENSATION; DEGASSING

Citation Formats

Aines, R.D., and Newmark, R.L. Active cooling-based surface confinement system for thermal soil treatment. United States: N. p., 1997. Web.
Aines, R.D., & Newmark, R.L. Active cooling-based surface confinement system for thermal soil treatment. United States.
Aines, R.D., and Newmark, R.L. Tue . "Active cooling-based surface confinement system for thermal soil treatment". United States.
@article{osti_541717,
title = {Active cooling-based surface confinement system for thermal soil treatment},
author = {Aines, R.D. and Newmark, R.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. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {10}
}