Search results
(1 - 3 of 3)
- Title
- Method for Recovery of Viscous Hydrocarbons by Electromagnetic Heating In Situ
- Creator
- Sresty, Guggilam C., Dev, Harsh, Snow, Richard H., Bridges, Jack E.
- Date
- 2009-05-08, 1984-12-04
- Description
-
A method of electromagnetic heating in situ recovers liquid hydrocarbons from an earth formation containing viscous hydrocarbonaceous liquid...
Show moreA method of electromagnetic heating in situ recovers liquid hydrocarbons from an earth formation containing viscous hydrocarbonaceous liquid and water in an inorganic matrix where the formation is substantially impermeable to fluids under native conditions. A block of the earth formation is substantially uniformly heated with electromagnetic power to a temperature at which the viscous hydrocarbonaceous liquid is relatively fluid and a portion of the water vaporizes to water vapor at a pressure sufficient to overcome the capillary pressure of the liquid in the matrix. Water vapor thereupon escaping from the block under such pressure is recovered with hydrocarbonaceous liquid driven thereby. The magnitude of the electromagnetic power is controlled to limit the current recovery ratio of water vapor to hydrocarbonaceous liquid below a predetermined limit assuring substantial recovery of the hydrocarbonaceous liquid prior to the driving off of substantially all the water.
Sponsorship: IIT Research Institute
United States Patent
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- Title
- Recovery of Liquid Hydrocarbons from Oil Shale by Electromagnetic Heating In Situ
- Creator
- Sresty, Guggilam C., Snow, Richard H., Bridges, Jack E.
- Date
- 2009-05-08, 1984-12-04
- Description
-
A method of electromagnetic heating in situ recovers liquid hydrocarbons from an oil shale formation containing kerogen in an inorganic matrix...
Show moreA method of electromagnetic heating in situ recovers liquid hydrocarbons from an oil shale formation containing kerogen in an inorganic matrix where the formation is substantially impermeable to fluids under native conditions. A block of the oil shale formation is substantially uniformly heated in situ with electromagnetic power to a temperature of about 275.degree. C. where there is pyrolysis of a portion of the kerogen to gas and shale oil at a pressure sufficient to overcome the capillary pressure of the shale oil in the matrix, thereby providing substantial fluid permeability to the formation. The gas thereupon escaping from said block and the shale oil driven thereby are recovered, thereby further increasing the permeability of the formation. The magnitude of the electromagnetic power is controlled to raise the temperature of the block relatively slowly to increase the rate of pyrolysis of the kerogen as the permeability of the formation increases to produce gas at pressures above the necessary to overcome the capillary pressure and below that at which there is substantial escape of the gas bypassing shale oil within the formation rather than driving the oil before it.
Sponsorship: IIT Research Institute
United States Patent
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- Title
- Method for Recycling Electric Arc Furnace Dust
- Creator
- Sresty, Guggilam C.
- Date
- 2009-05-08, 1991-05-07
- Description
-
This invention relates to the metallurgy of iron and particularly to the separation and recovery of metals from electric arc furnace (EAF)...
Show moreThis invention relates to the metallurgy of iron and particularly to the separation and recovery of metals from electric arc furnace (EAF) dusts. While the invention discloses a process for the separation and recovery applicable to zinc, lead, cadmium and antimony contained in such EAF dusts, the invention is particularly applicable to the separation and recovery of zinc. This invention describes a method for reducing the zinc contained in an EAF dust, volatilizing the metallic zinc so produced from the mass of the dust, and reoxidizing the metallic zinc to zinc oxide along with the simultaneous regeneration of hydrogen which can be recycled to treat additional EAF dust.
Sponsorship: IIT Research Institute
United States Patent
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