Treating oily wastes
AssigneeChevron Research and Technology Company
InventorParameshwaran S. Sundar
Life of this patent
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Abstract
Disclosed is a process for treating oily wastes, which have a predominantly liquid phase, by mixing the oily waste with a granulating medium under turbulent flow conditions. The process comprises mixing the oily waste with a granulating medium under such conditions, wherein granules are formed having an attrition index of less than about 10 percent and a filtration index of greater than 0.20 gallons per minute per square foot. The contaminating hydrocarbons may then be removed by contacting the granules with a solvent capable of removing at least a portion of the contaminating hydrocarbons. The granules are then recovered by means known in the art.
Claims18
A method for treating oily wastes burdened by one or more contaminating hydrocarbons wherein the oily waste is formed into granules, said method comprises:
- a. mixing the oily waste with a granulating medium under turbulent flow conditions, wherein granules are formed having an attrition index of less than about 10 percent and a filtration index of greater than 0.20 gallons per minute per square foot.
A method for treating oily wastes burdened by one or more contaminating hydrocarbons wherein the oily waste is formed into granules, said method comprises:
- a. removing free liquids from the oily waste;
- b. mixing the oily waste with a granulating medium comprising a filler and a binder in a Turbulizer.RTM. mixer and under turbulent flow conditions, wherein granules are formed having an attrition index of less than about 10 percent and a filtration index of greater than 0.20 gallons per minute per square foot;
- c. contacting the granules with a solvent capable of dissolving at least a portion of the contaminating hydrocarbon;
- and
- d. recovering said granules, wherein said granules have a reduced content of contaminating hydrocarbons.
Dependencies are inferred from the claim text.