Electric heating – Capacitive dielectric heating – Specific heating application
Patent
1994-08-16
1996-01-16
Leung, Philip H.
Electric heating
Capacitive dielectric heating
Specific heating application
219780, 166 60, 166248, H05B 654, E21B 3604
Patent
active
054849853
ABSTRACT:
An in-situ method of extracting contaminants from a soil volume comprises applying a radiofrequency (RF) excitation signal to heat the soil with an array of electrodes. The electrodes are inserted into the contaminated volume or inserted into a matrix of holes drilled into the volume. A first row of electrodes is electrically coupled to a shield of a coaxial cable, with a second row electrically coupled to the central conductor of the coaxial cable. RF energy is applied to pairs of electrode rows through the coaxial cable and a matching network is installed in front of the electrode-row pair to maximize power flow into the electrode-row pair. This results in very evenly distributed voltages which results in even heating. A balanced-to-unbalanced transformer (balun) is installed at the input to the matching network to prevent the deposition of RF energy outside the target volume and creation of voltages that could be hazardous to personnel. The electrodes are perforated and connected to collection tubes which collect volatilized contaminant vapors and pass the vapors to a vapor treatment unit for neutralization.
REFERENCES:
patent: 4470459 (1984-09-01), Copland
patent: 4670634 (1987-06-01), Bridges et al.
patent: 4956582 (1990-09-01), Bourassa
patent: 5152341 (1992-10-01), Kasevich
patent: 5236039 (1993-08-01), Edelstein et al.
Edelstein William A.
Iben Icko T.
Mueller Otward M.
Roemer Peter B.
Uzgiris Egidijus E.
General Electric Company
Leung Philip H.
Snyder Marvin
Zale Lawrence P.
LandOfFree
Radiofrequency ground heating system for soil remediation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiofrequency ground heating system for soil remediation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiofrequency ground heating system for soil remediation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-311015