Harold J. Beard
Engineering in Baton Rouge, LA

4342645, Aug 3, 1982

Oct 28, 1980

6/202019

Laird C. Fletcher - Natchitoches LA
Harold J. Beard - Baton Rouge LA

Delta Central Refining, Inc. - Natchitoches LA

C10M 1100, C10G 706

208184

Used oil is refined by distillation to remove a volatile forecut followed by further distillation with recirculation provisions to obtain the desired fractions of lubricating oil products while reducing the vaporization temperature of the oil. The recycle effect tends to reduce coking and cracking while providing a greater recovery of lubricating oil products through the carrier effect of the light ends. In one embodiment of the invention, a waste oil feedstock has water, gasoline and other similarly volatile components removed in a first stage evaporator (16). Heavier fuel, such as fuel oil is then removed in a second stage evaporator (28). A light lube oil fraction is then obtained by distillation with a third stage wiped-film evaporator (40). Finally, a heavy lube oil fraction is obtained by distillation of the bottoms from the evaporator (40) with a fourth-stage evaporator (64).

4360420, Nov 23, 1982

Oct 28, 1980

6/202018

Laird C. Fletcher - Natchitoches LA
Harold J. Beard - Baton Rouge LA

Delta Central Refining, Inc. - Natchitoches LA

C10M 1100, C10G 700, C10G 2116

208184

Used oil is rerefined by distillation and extraction with tetrahydrofurfuryl alcohol. In accordance with the process, used oil is rerefined by distillation to remove a volatile forecut followed by further distillation with recirculation provisions to obtain the desired fractions of lubricating oil products while reducing the vaporization temperature of the oil. The recycle effect tends to reduce coking and cracking while providing a greater recovery of lubricating oil products through the carrier effect of the light ends. After the desired fractions of lubricating oil have been obtained by the distillation phase of the process, tetrahydrofurfuryl alcohol is utilized in an extraction process to remove impurities remaining in the distilled oil. The tetrahydrofurfuryl alcohol-lube oil mixture is separated into a raffinate and extract stream for distilling and steam stripping the tetrahydrofurfuryl alcohol therefrom. In one embodiment of the invention, a waste oil feedstock has water, gasoline and other similarly volatile components removed in a first stage evaporator (16).

4634528, Jan 6, 1987

Oct 4, 1985

6/784154

Harold J. Beard - Baton Rouge LA
Raleigh L. Cox - Baton Rouge LA

B01D 2324, B01D 2938, B01D 3316

210277

A filter for use in conjunction with an intrachannel clarifier is provided comprising an enclosure, positionable within a channel and connectible to an intrachannel clarifier, and having a floor and sides; a filter compartment fixed within the enclosure, and having sides, either connected to or coincidental with the sides of the enclosure and segregating the interior of the filter compartment from the remainder of the enclosure; a porous medium support, fixedly connected to the sides of the enclosure and positioned within the filter compartment; a bottom, below the medium support and fixedly connected to the sides of the filter compartment; a filter medium, positioned within the filter compartment above the medium support; a conduit, connecting between the interior of the filter compartment beneath the medium support and the interior of the enclosure; a liquid dispersion mechanism, positioned within the filter compartment above the filter medium, for receiving liquid from outside the enclosure and dispersing the liquid over the filter medium; and a liquid transfer mechanism, connected to the interior of the enclosure, for transferring liquid out of the enclosure.

5360538, Nov 1, 1994

Nov 20, 1991

7/796076

Harold J. Beard - Baton Rouge LA

C02F 318

210 961

In an extended aeration wastewater treatment system having wastewater flowing into a retention basin so as to form mixed liquor within the retention basin, a mixed liquor wasting system is provided, comprising a thickener tank, having a sidewall and a bottom; a waste line having a first end and a second end, the first end fluidly connected to the retention basin, and the second end fluidly connected to the thickener tank; a first flow control device, such as a pump, for continuously removing a portion of the mixed liquor from the basin at a desired constant flow rate through the waste line, positioned in the waste line; a sludge removal line having a first end and a second end, the first end fluidly connected to the bottom of the thickener tank, and the second end fluidly connected to a sludge disposal system; a second flow control device, such as a pump, for removing a concentrated portion of the mixed liquor from the thickener tank, positioned in the sludge removal line; and a return line having a first end and a second end, the first end fluidly connected to the thickener tank above the bottom, and the second end fluidly connected to the retention basin. A method for wasting mixed liquor is provided, comprising the step of continuously removing a portion of the mixed liquor from the basin at a desired constant flow rate.

5084167, Jan 28, 1992

Oct 23, 1989

7/425823

Harold J. Beard - Baton Rouge LA
Raleigh L. Cox - Baton Rouge LA

C02F 316

210194

An oxidation ditch for circulating a waste water stream and having a channel formed by a continuous vertical outside wall extending upward from a bottom and having at least one section shaped to form a curved area into which a vertical turbine is operatively positioned and by a partition wall also extending upward from the bottom and positioned inside the outside wall with one of its ends adjacent the vertical turbine, the improvement of which comprises a baffle positioned in the channel upstream of the vertical turbine to minimize the mixing of the upstream waste water with the backwash created by the vertical turbine.

4626353, Dec 2, 1986

Oct 4, 1985

6/784153

Harold J. Beard - Baton Rouge LA
Raleigh L. Cox - Baton Rouge LA

B01D 1700, C02F 140

210519

A side skimmer provided in a channel containing flowing liquid includes a skimmer mechanism and a skimmer drain. The skimmer mechanism includes a fixed portion secured in a hinge-like manner to one side of the channel and aligned with an obstruction located partially across the channel width, and a movable wing-like portion extending above and below the liquid surface. This mechanism selectively deflects the flow into the drain, and is movable between a closed position, which allows free flow between the mechanism in the channel side and the obstruction, and an open position between the fixed portion and the obstruction, which directs flow to the skimmer drain. The skimmer drain is vertically movable between a closed position above the liquid surface, and an open position just below the surface whereby floating matter is removed.

4383922, May 17, 1983

Apr 22, 1982

6/370802

Harold J. Beard - Baton Rouge LA

B01D 2100

210521

A process and apparatus for treatment of waste water is provided wherein a waste water clarifier is positioned in a waste water flow channel and having a body assembly with a bow section facing into and extending above the waste water currents, a stern section having a opening below the waste water level to allow waste water to enter the clarifier and, having a rear baffle extending between clarifier side walls and extending downward perpendicularly thereto and a second baffle extending partially between the clarifier side walls and extending downward and perpendicularly thereto, the bottom section having rows of tubular pipes extending at an angle downward therefrom with the pipe openings facing opposite the waste water flow, and an effluent launder fixedly positioned in the bow section.

4389312, Jun 21, 1983

Oct 5, 1981

6/308279

Harold Beard - Baton Rouge LA

C02F 174, B01F 504

2101981

A sewerage aerator is illustrated having an air feed diffuser with air opening adjustably positioned approximate venturi throat located above the liquid sewerage tank level and having means to introduce the liquid sewerage to the upper venturi chamber and cause it to flow past the air openings.

4457844, Jul 3, 1984

May 12, 1983

6/494005

Harold J. Beard - Baton Rouge LA

C02F 322

210624

A waste water stream is clarified by phase separation of a part of the stream in a clarifier positioned in an oxidation ditch, through the establishment of a head differential between the level of liquid in the clarifier and the level of liquid in the oxidation ditch.

4436632, Mar 13, 1984

May 16, 1983

6/494641

Harold J. Beard - Baton Rouge LA

B01D 2100

210776

In an oxidation ditch process for clarifying a waste water stream employing a clarifier boat, a novel skimmer assembly is disclosed having a buoyant closing assembly to control the amount of surface fluid containing the bulk of the oils, greases, etc. in the waste water being removed from the clarifier.