 Pelletized chromatography media of agarose, dextran or acrylamide/azlactone copolymer |
| Now, however, in accordance with the present invention, there is provided chromatography media in a ... |
|
| Blood cell washing systems and methods |
| Systems and methods in accordance with the invention pass shed blood in successive serial or ... |
|
| Blood processing method and apparatus with disposable cassette |
| An apparatus for regulating fluid flow in a blood processing system (such as a blood washing system)... |
|
| Rate-responsive pacemaker having selectable response to arm movement and pedal impacts |
| Accordingly, it is a general feature of the invention to provide a rate-responsive pacemaker ... |
|
| Centrifugal separator with disposable bowl assembly |
| The centrifugal separator according to the invention is designed for meeting the above objectives ... |
|
| Apheresis apparatus for separating an intermediate density component from whole blood |
| The present invention provides a pheresis apparatus and method for increasing blood component yield ... |
|
| Intraoperative blood salvaging system and method |
| In accordance with the present invention, an intraoperative blood salvaging and purification system ... |
|
| Method and apparatus for the automatic control of a blood centrifuge |
| The aim of the present invention is to provide an apparatus and a method for the automatic control ... |
|
| Process for operating a blood centrifugation unit |
| The previously described state of the art poses a problem which always arises when quantities of ... |
|
| Blood centrifuge having integral heating to control cellular component temperature |
| Accordingly, one object of this invention is to provide a method and apparatus for the separation ... |
|
|
Apparatus for recovery of liquid hydrocarbon
| Details |
Inventors: Lamphere, David A.; Bowles, David F.;
Assignee: Clean Earth Technology, Inc. (North Ferrisburgh, VT)
Primary Examiner: Bertsch; Richard A.
Assistant Examiner: Freay; Charles G.
Attorney, Agent or Firm: Lahive & Cockfield
A pump unit for recovery of hydrocarbon liquid from atop water in a well includes a hydrocarbon pump intake with a linear probe for indicating the position of the pump intake relative to the hydrocarbon/water interface on a control panel, so that its relative position can be monitored and changed. The probe has a conductive member coated with a non-conductive coating, and is attached to a source of low frequency electrical signal. The strength of a signal output from the probe indicates the position of the probe, and the pump intake, relative to the hydrocarbon/water interface and controls a display on a control panel. Furthermore, the signal can be used to control the hydrocarbon/water interface relative to the pump intake by such means as pumped water from under the pump intake in a controlled manner to change said interface relative to the intake or by means of a motorized lift to reposition said pump intake relative to the interface. |
|
DETAILED DESCRIPTION Accordingly, the invention provides a hydrocarbon pump unit for recovery of liquid hydrocarbon from a body of liquid with a hydrocarbon/water interface, comprising a pump with a pump intake, and a linear probe, fixed in relation to the pump intake and oriented to extend perpendicularly to the hydrocarbon/water interface when in use, the probe including signalling means for generating a signal indicative of the linear location of the hydrocarbon/water interface relative to the pump intake.
Preferably, the probe signalling means includes means for generating a continuously varying signal indicative of the continuously varying linear location of the interface relative to the pump intake.
It preferably also includes receiving means for receiving the signal, and display means responsive to the signal for displaying the relative location of the interface relative to the pump intake.
Also, the linear probe may include a linearly extending electrically conductive member, with a non-conductive coating on the member, and means for exciting the conductive member with a low frequency electrical signal.
The invention also comprises a method for recovering liquid hydrocarbon from a well containing liquid hydrocarbon and water that define a hydrocarbon/water interface, comprising the steps of locating a pump with a pump intake above the hydrocarbon/water interface, determining the linear position of the pump intake relative to the interface, operating the pump when the pump intake is surrounded by hydrocarbon, and knowingly varying the linear position of the pump relative to the interface to maximize operation of the pump.
Preferably, the method further includes pumping water from the well to change the location of the hydrocarbon/water interface, at varying rates through a conduit controlled by a valve, the duty cycle of which varies the water flow and thus raises or lowers the hydrocarbon/water interface as desired, while maintaining near continuous operation of the water pump.
|
| Related patents |
|
|
Method and apparatus for in situ groundwater remediation
OF THE INVENTION Turning now to the drawings, wherein like components are designated by like reference numerals throughout the various figures, FIGS. 1 and 2 show a ...
|
|
|
In-situ vapor stripping for removing volatile organic compounds from groundwater
The present invention is directed to a system for removing VOCs from groundwater. The system includes means for injecting gas into a well, to force groundwater flow ...
|
|
|
Pressure extraction process for removing soil and groundwater contaminants
The present invention is a more effective process for removal, including extraction and degradation, of underground contaminants from a soil area that includes a ...
|
|
|
Air sparging/soil vapor extraction apparatus
What is claimed is: 1. An apparatus for removing volatile contaminants from soil and groundwater, the apparatus mounted in a single bore hole in soil, the apparatus ...
|
|
|
Modular filtration system
In the present invention apparatus and methods are provided in which the head pressure developed by the weight of a fluid is used to drive a plurality of filters to ...
|
|
|
Gas-gas-water treatment for groundwater and soil remediation
The present invention relates to injection of oxidizing gas in the form of microfine bubbles into aquifer regions by means of a sparging system which includes one or ...
|
|
|
Multi-arrayed vacuum recovery method and system for groundwater wells
It is therefore an object of the present invention to provide a method and system for removing increased amounts of free product from a groundwater well prior to ...
|
|
|
Use of structure with membrane having continuous pores
What we claim is: 1. A substance enveloped in a film of a structure comprising at least one membrane extending along a plane, curved, cylindrical or vesicular surface ...
|
|
|
Method of isolating biomolecules by ion exchange
Ion Exchange Using A Weak Ion Exchanger Referring to Figs. 1A-C sketches are shown of ion exchange columns containing a weak ion exchanger (anion exchanger) to which ...
|
|
|
Iodinated matrices for disinfecting biological fluids
OF THE PREFERRED EMBODIMENTS The following description will enable a person skilled in the art to which this invention pertains to make and use the invention, and sets ...
|
|
|
Liquid Purification 
