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4520266 Radiation level detectors
IV
New Patents
with an aqueous base, recovering a base-treated, solid fly ash, washing the base-treated solid fly ash with water, recovering a rinsed, base-treated fly ash solid, reacting the rinsed, base-treated fly ash solid with mineral acid, and recovering an aqueous, solubilized acidic fly ash leachate, then mixing the aqueous, acidic solubilized fly ash leachate with water or waste water to remove pollutants therefrom, or with sludge to reduce its resistant to dewatering.
produce a liquid phase process stream which contains by-product diolefins along with the intended product monoolefins. The liquid phase process stream and added hydrogen are passed through a selective hydrogenation zone in which diolefins are catalytically converted to monoolefins. This increases the quality of the product monoolefin stream. The selective hydrogenation zone is located between the vapor-liquid separator and stripper column of the dehydrogenation zone.
4519922
4520266
ENVIRONMENTALLY COMPATIBLE HIGH DENSITY DRILL MUD OR BLOW-OUT CONTROL FLUID David L Sutton, Michael L Walker assigned to Halliburton Company An environmentally compatible high density drilling or blow-out control fluid is provided wherein densities between twenty-four (24) and forty (40) pounds per gallon can be achieved. Such preferred fluid is aqueous based, uses a non-toxic gelling agent such as fine iron oxide powder, a coarser first weighting material such as fine iron powder, and a second still coarser weighting material such as iron shot, steel shot or mixtures thereof.
4520214
RADIATION LEVEL DETECTORS Edwin Fletcher, Gerald V Beaton, Charles R Gomer, Rotherham, United Kingdom assigned to British Steel Corporation
7
The free surface of a fluid (e.g. molten steel) dense to particular ionizing radiations and contained within a vessel (e.g. a casting mould) is monitored by a device which includes a radio active source positioned on one side of the vessel and a detector positioned on the side which includes a photo-multiplier having a photo cathode coupled to a phosphor scintillator of sufficient length to cover the predicted range of movement of the liquid free surface.
HIGH SELECTIVITY PROCESS FOR DEHYDROGENATION OF PARAFFINIC HYDROCARBONS
4520741 WASTE DISPOSAL
Bipin V Vora assigned to UOP Inc Richard W Carbeau, James F Martin, John H Lanier, William L Holt assigned to ENSCO Inc
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An improved process for the catalytic dehydrogenation of paraftinic hydrocarbons is disclosed. Feed parattinic hydrocarbons are dehydrogenated to yield an olefin-containing vapor stream, which is partially condensed to
.--.
;'V-
y'
--
i
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Burning a waste fuel blend at very high temperatures (typically greater than 4000 deg. F.) for a very short period of time (typically a matter
New Patents
with an aqueous base, recovering a base-treated, solid fly ash, washing the base-treated solid fly ash with water, recovering a rinsed, base-treated fly ash solid, reacting the rinsed, base-treated fly ash solid with mineral acid, and recovering an aqueous, solubilized acidic fly ash leachate, then mixing the aqueous, acidic solubilized fly ash leachate with water or waste water to remove pollutants therefrom, or with sludge to reduce its resistant to dewatering.
produce a liquid phase process stream which contains by-product diolefins along with the intended product monoolefins. The liquid phase process stream and added hydrogen are passed through a selective hydrogenation zone in which diolefins are catalytically converted to monoolefins. This increases the quality of the product monoolefin stream. The selective hydrogenation zone is located between the vapor-liquid separator and stripper column of the dehydrogenation zone.
4519922
4520266
ENVIRONMENTALLY COMPATIBLE HIGH DENSITY DRILL MUD OR BLOW-OUT CONTROL FLUID David L Sutton, Michael L Walker assigned to Halliburton Company An environmentally compatible high density drilling or blow-out control fluid is provided wherein densities between twenty-four (24) and forty (40) pounds per gallon can be achieved. Such preferred fluid is aqueous based, uses a non-toxic gelling agent such as fine iron oxide powder, a coarser first weighting material such as fine iron powder, and a second still coarser weighting material such as iron shot, steel shot or mixtures thereof.
4520214
RADIATION LEVEL DETECTORS Edwin Fletcher, Gerald V Beaton, Charles R Gomer, Rotherham, United Kingdom assigned to British Steel Corporation
7
The free surface of a fluid (e.g. molten steel) dense to particular ionizing radiations and contained within a vessel (e.g. a casting mould) is monitored by a device which includes a radio active source positioned on one side of the vessel and a detector positioned on the side which includes a photo-multiplier having a photo cathode coupled to a phosphor scintillator of sufficient length to cover the predicted range of movement of the liquid free surface.
HIGH SELECTIVITY PROCESS FOR DEHYDROGENATION OF PARAFFINIC HYDROCARBONS
4520741 WASTE DISPOSAL
Bipin V Vora assigned to UOP Inc Richard W Carbeau, James F Martin, John H Lanier, William L Holt assigned to ENSCO Inc
t
"~'r" ,,%-".... "~"
*',I ,
Y
.... 2
An improved process for the catalytic dehydrogenation of paraftinic hydrocarbons is disclosed. Feed parattinic hydrocarbons are dehydrogenated to yield an olefin-containing vapor stream, which is partially condensed to
.--.
;'V-
y'
--
i
m ~
Burning a waste fuel blend at very high temperatures (typically greater than 4000 deg. F.) for a very short period of time (typically a matter