The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 1993
Filed:
Oct. 04, 1991
Paul C Johnson, Sugar Land, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
An in-situ soil heating/treatment system consists of a frame to which are attached a plurality of heater spikes and a plurality of tubular, perforated vapor extraction spikes. An insulated shield covers the frame and internal components. The spikes, which are 1-2 feet in length, are driven into the ground and heated to temperatures in excess of 1000.degree. C. The heat generated at the heater spikes is conducted and convected into the soil. As the soil temperature rises and approaches the boiling point of the contaminants, the contaminants volatilize and flow to the vapor collection spikes. A vacuum system connected to the vapor extraction spikes withdraws the contaminant vapors through the perforated, tubular spikes and treats them.