Method for soil treatment
AssigneeChevron U.S.A. Inc.
InventorsThomas Hoelen, Cesar Ovalles, Deyuan Kong
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Abstract
The present invention is directed to a method for irradiating of solids containing petroleum or petroleum derived compounds (PPDCs), such as soils, oily sludge, drill cuttings, sediments, and non-commercial petroleum industry products, with electron beams in order to physically and/or chemically alter the composition of the PPDCs. The method includes the step of separating PPDC gas and liquids in the presence of a gas driver. Optionally, the method includes the steps of treating off-gases and applying one or more amendments to PPCD-impacted solid material pre-irradiation, post-irradiation, or during electron beam irradiation.
Claims10
A method for ex situ transformation of petroleum or petroleum derived compounds (PPDC) in PPDC-impacted solid material, comprising:
- irradiating the PPDC-impacted solid material with at least one electron beam source;
- and
- utilizing a gas driver to separate the PPDC from the PPDC-impacted solid material;
- wherein the hydrocarbon content of the PPDC-impacted solid materials is less than about 70% by weight PPDC.
Dependencies are inferred from the claim text.