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WO2008058392A1 - Appareil et procédé de récupération de fluide - Google Patents

Appareil et procédé de récupération de fluide Download PDF

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Publication number
WO2008058392A1
WO2008058392A1 PCT/CA2007/002059 CA2007002059W WO2008058392A1 WO 2008058392 A1 WO2008058392 A1 WO 2008058392A1 CA 2007002059 W CA2007002059 W CA 2007002059W WO 2008058392 A1 WO2008058392 A1 WO 2008058392A1
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WO
WIPO (PCT)
Prior art keywords
auger
sleeve
liquid
feed
solid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CA2007/002059
Other languages
English (en)
Inventor
Darcy Thompson
Ari Laurell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CLAYMORE FIELD SERVICES Ltd
Original Assignee
CLAYMORE FIELD SERVICES Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CLAYMORE FIELD SERVICES Ltd filed Critical CLAYMORE FIELD SERVICES Ltd
Priority to CA002669775A priority Critical patent/CA2669775A1/fr
Publication of WO2008058392A1 publication Critical patent/WO2008058392A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/22—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being vertical or steeply inclined

Definitions

  • the present invention relates to methods and apparatus for recovering fluids from slurries. More specifically, the invention is adapted to recover liquid hydrocarbon components from drill cuttings and the like.
  • drilling fluids or "muds” are circulated down through the drill string to lubricate the drill bit and assist in removing cuttings and other debris that accumulate in the well.
  • the cuttings are flushed to the surface within the annular space formed between the drill pipe and the wall of the well. At the surface, the cuttings undergo a fluid separation process to recover hydrocarbons and to separate solid material.
  • Various methods are used for separating the liquid and solid components from a slurry comprising drill cuttings. In one common approach, one or more shaker screens are used, over which the drill cuttings are passed. The liquid components are allowed to pass through the screens while the solid material is subsequently vibrated off.
  • the slurry is allowed to settle by gravity so as to allow the heavier solid material to enter into the cylindrical section.
  • the upper end of the cylindrical section includes a wall comprised of a porous screen.
  • a centrally mounted auger is rotated within the cylindrical section and force the slurry downwards against a bottom wall. The auger thus causes the solid material to be compacted with the liquid being squeezed upward and outward through the porous wall into a collection chamber. After a certain pressure is reached, the compacted solid material is discharged through a door at the bottom of the cylinder.
  • the present invention provides an apparatus for separating fluids from a wet solid material.
  • the wet solid may comprise a slurry or slurry-like material comprising a mixture of solid and liquid components.
  • the invention provides a continuous fluid separation method that effectively recovers the liquid component of slurry or slurry-like mixture comprising a liquid and solid.
  • the invention provides a method of fluid recovery and, in particular, a method of recovering liquid hydrocarbon material from drill cuttings.
  • the invention provides an apparatus for separating liquid and solid components from a wet solid mixture feed, the apparatus comprising: - a generally cylindrical sleeve, the sleeve being formed of a liquid permeable material for allowing the liquid component to pass there-through; - the sleeve having a first end and a second end, the sleeve being oriented to have the second end vertically higher than the first end; - an elongate auger provided generally co-axially within the sleeve, the auger having an outer diameter proximal to the inner diameter of the sleeve; - a drive means to rotate the auger about the longitudinal axis thereof; - a feed inlet provided on the filter, proximal to the first end, for allowing the auger to receive the feed; - a solids outlet provided at the second end of the sleeve; and - a liquid outlet provided at the first end of the sleeve.
  • the invention provides a system of liquid extraction comprising a series of the apparatus described above.
  • the invention provides a multi- component liquid separation system wherein one or more of the apparatuses of the invention are combined with other separation equipment.
  • the invention provides a method of separating liquid and solid components from a wet solid mixture feed, the method comprising: - providing an auger mechanism having an inlet end and an outlet end, wherein the outlet end is vertically higher than the inlet end; - providing a generally cylindrical liquid permeable sleeve over the auger; - feeding the feed to the inlet end of the auger; - rotating the auger about its longitudinal axis thereby forcing the feed against the inner wall of the sleeve; - collecting the liquid component permeating through the sleeve; - collecting the solid component at the outlet end of the auger.
  • the invention provides a method of separating liquid and solid components from a wet solid mixture feed, the method comprising vertically raising said wet solid mixture through a liquid permeable screen while applying a compressive force whereby the liquid component is forced through the screen and separated from the solid component.
  • Figure 1 is a schematic cross sectional view of the apparatus of the invention according to an embodiment of the invention.
  • Figure 2 is a schematic cross sectional view of the apparatus of the invention according to another embodiment.
  • Figure 3 is a perspective view illustrating the exterior of the apparatus according to an embodiment.
  • Figure 4 is a side view of an auger of the invention.
  • Figure 5 is a front elevation of the solids exit port of the apparatus illustrating the choke plate.
  • slurry is used to refer to a feed material comprising a mixture of solid and liquid components. According to the invention, a slurry can be fed to an apparatus for separation of the solid and liquid components.
  • slurry is not intended to limit the uses of the apparatus and/or method of the present invention in any way and it will be understood by persons skilled in the art that the present invention can be applied to a variety of solid/liquid mixtures including waste water, drill cuttings etc.
  • Various aspects of the present invention are described below in reference to a slurry comprising drill cuttings from an oil drilling operation.
  • FIG. 1 illustrates an apparatus in accordance with one aspect of the invention.
  • the apparatus illustrated in Figure 1 is schematic in nature and is not intended to limit the invention to any particular dimensions, size ratios etc.
  • the apparatus 10 includes an upper end 11 and a lower end 13 and comprises a housing or frame 12 containing a generally cylindrically shaped, liquid permeable sleeve or screen 14.
  • the screen 14 which is described further below, is generally vertically arranged within the housing 12.
  • the apparatus can be provided without a housing 12 as will be understood by persons skilled in the art.
  • the screen 14 is generally liquid permeable. More generally, the screen 14 may be formed of any material that allows the passage of desired liquids while preventing passage there- through of the solid components, as will be discussed further below.
  • the screen 14 may be formed of a perforated or porous material or a mesh.
  • the screen 14 may comprises a cylindrically formed metal sheet incorporating perforations of any desired size or shape.
  • the screen 14 may comprise a metal mesh.
  • the screen 14 will have openings or perforations of a desired size.
  • such openings may comprise holes or slots etc. having a large dimension (i.e. the largest dimension in the case of non-circular openings) of about 0.02 to 3 mm.
  • the openings or perforations have a large dimension of about 0.1 to 0.5 mm and, more preferably, about 0.2 to 0.25 mm (i.e. 10/1000 inch).
  • the sleeve 14 may be provided as a single, generally cylindrical component of the apparatus 10. However, the sleeve may also be provided in various pieces or sections. By providing the sleeve in two or more sections, various advantages can be realised. For example, where the apparatus 10 is of a substantial length, the ability to provide sleeves in sections would assist in the transport and/or manipulation of same. Moreover, providing a sleeve in sections also facilitates replacement or rearrangement in the event one region is subjected to localised wear.
  • the sleeve section containing such region may simply be removed and replaced with another without replacing other sections. This possibility reduces the cost of the sleeves particularly where only a small region is found to be worn while the remainder of the sleeve is unaffected. Further, instead of replacing the subject section containing the worn region, the section in question may simply be flipped and, therefore re-used. That is, the worn section is moved to a location that is not subject to the same wear conditions.
  • the apparatus 10 will normally include a stand or support structure, which, for convenience, is not illustrated in Figure 1.
  • an elevating device Provided generally coaxially within the screen 14 is an elevating device.
  • the elevating device comprises an auger mechanism 16 that serves to vertically raise material, such auger 16 being driven by a drive means, not shown.
  • the raising of material is accomplished by rotating the auger and having material conveyed upwardly on the flighting, or blade 18 of the auger.
  • the method by which material is transported using augers would be known to persons skilled in the art.
  • the outer diameter of the auger 16 is sized to be close to the inner diameter of the screen 14. In one embodiment, the auger is sized so as to allow the outer edge to contact the screen 14.
  • the outer edge of the auger flighting 18 is provided with a brush or similar device (not shown in Figure 1 ) so as to allow the inner surface of the screen 14 to be scraped as the auger 16 is rotated.
  • a brush or similar device (not shown in Figure 1 ) so as to allow the inner surface of the screen 14 to be scraped as the auger 16 is rotated.
  • the apparatus 10 to be essentially "self-cleaning" by preventing the openings of the screen 14 from being occluded with solid material.
  • the drive means used to rotate the auger 16 such as a motor, associated gearing and belts etc. and other equipment, is not shown for convenience. As will be understood, any such drive means can be used to rotate the auger 16.
  • the drive means can be connected to any position of the auger but would preferably be connected to one of the terminal ends thereof. More preferably, the drive means would be connected to either the top or bottom end of the auger 16. Even more preferably, as discussed further below, the drive means can be provided at the top end of the apparatus and be connected to the top end of the auger. Further, in a preferred embodiment, the auger is driven by an explosion-proof hydraulic mechanism or by an electric motor. This is particularly advantageous in situations where the liquid component of the slurry may contain flammable materials, such as in the case of drill cuttings.
  • the apparatus of Figure 1 also includes a slurry material receiving hopper 20 that is positioned to feed material, received in the hopper, into an inlet 22 provided in the housing 12 and/or screen 14 of the apparatus 10.
  • the inlet 22, as shown, is provided generally at the lower end 13 of the apparatus 10 as will be discussed further below and serves to feed slurry material to the bottom end of the auger 16.
  • the apparatus 10 also includes a solids exit chute 24 provided generally at the upper end 11 thereof.
  • the exit chute 24 is adapted and positioned to receive solid material exiting or delivered from the upper end of the auger, at the upper end 11 of the apparatus 10.
  • the apparatus 10 further includes a liquid exit conduit 26 connected to the bottom end 13 of the apparatus 10.
  • the conduit 26 is adapted to receive liquid separated from the inlet slurry. Such liquid, as described further below, passes through the screen 14 and, where the housing 12 is present, is trapped between the screen 14 and such housing 12. The liquid is then allowed to pass to the bottom of the apparatus 10 by gravity and then passed out through the conduit 26.
  • a method according to one aspect of the invention will now be described.
  • a slurry containing a mixture of solid and liquid components, such as drill cuttings and the like is deposited into the hopper 20 at the bottom end of the apparatus.
  • the material can be delivered to the hopper in any number of ways such as by conveyor, pipeline, auger or other delivery mechanisms as will be known to persons skilled in the art.
  • the material may simply be delivered by truck or hand depending upon the application. Further, the material delivered to the hopper 20 can result from a variety of upstream equipment such as other liquid extraction apparatus etc.
  • the hopper 20 allows a stream of the slurry to enter into the apparatus 10 through the inlet 22 as shown by the arrow 30.
  • the inlet allows the material to be loaded on to the lower end of the auger 16 (i.e. the end of the auger 16 proximal to the lower end 13 of the apparatus 10).
  • the material loading comprises delivering the material onto the flighting 18 of the auger. As the auger 16 rotates, the material is transported both upwardly as well as outwardly, towards the outer edge of the auger flighting 18.
  • the auger is rotated so as to cause the material to be elevated from the lower end 13 to the upper end 11 of the apparatus 10 as shown by the arrow 32.
  • the action of gravity will apply a downward force on such material. Due to the reduced friction between the auger blade and the liquid component, a first degree of solid/liquid separation begins very soon after the slurry material is loaded on the auger blade.
  • the auger also causes such slurry material to be forced against the cylindrical screen 14 provided around the auger flighting 18.
  • Such force is generated mainly by the force of gravity acting on the material and forcing same downwards against the sloped flighting of the auger 16.
  • the apparatus 10 may include a collection tray, pan or the like (not shown) at its base 13 to collect extracted liquid and divert it to the conduit 26.
  • the apparatus may include a pump (also not shown) to assist in transporting the fluid component to a desired location.
  • a pump also not shown
  • Upward transportation of the solid material supported on the auger 16 is continued in the apparatus 10 until such material reaches the upper end 11 thereof.
  • the material which is now essentially a liquid-free solid component of the feed slurry, is pushed out of a solids opening 28 and exits the apparatus 10 through a chute 24, as shown by the arrow 38.
  • Such solid material is commonly referred to as "cake”.
  • the chute 24 may, in turn, be connected to various types of collection, transport or treatment equipment as needed or desired.
  • the outer edge of the auger flighting 18 is preferably provided with a brush or similar wiping device. In this way, as the auger 16 is rotated, the inner surface of the screen 14 is continuously cleaned of any material that may occlude the perforations of the screen 14.
  • the apparatus 10 is shown as being generally vertical in orientation. However, as will be understood by persons skilled in the art, the apparatus 10 may also be provided in a slanted or inclined orientation if needed. In either case, it will be understood that some type of elevation of the apparatus is preferred in order to take advantage of the gravitational forces in forcing the liquid component of the inlet slurry through the screen 14.
  • the apparatus 10 in either the vertical or slanted orientation, will include the desired supports and bracing equipment to maintain the apparatus in the desired position and to support same during operation.
  • the support system may be adjustable so as to allow the orientation of the apparatus to be variable. In this way, the apparatus can be adjustable between a vertical orientation and any desired angle of inclination.
  • the support system may include wheels or the like to allow the apparatus to be transportable between locations.
  • the size of openings or perforations provided on the screen 14 will vary the rate of extraction of the liquid component. In the above description, the preferred sizes of the openings have been described in connection with a particular application. The actual sizes of the openings will vary depending upon other applications since the dimensions of the solid components would vary.
  • the particle sizes associated with drill cuttings may be larger than those associated with wastewater.
  • the sizes of the openings should be chosen so as to provide the apparatus with an optimum liquid extraction rate while reducing the problems associated with clogging by solid material.
  • another design variable affecting the rate of liquid extraction is the height of the apparatus 10.
  • Empirical data using the apparatus of the invention has shown that with a screen perforation size of roughly 0.25 mm, most of the liquid in a drill cuttings feed slurry can be extracted within the first 0.6 m (2 feet) of the apparatus. This corresponds to the "effective" height of the apparatus, that is, the distance where the feed slurry is contacted with the screen.
  • a preferred effective height of the apparatus would be, for example, 1.07 m (3.5 feet) so as to ensure virtually complete liquid extraction.
  • two or more of the apparatus 10 shown in Figure 1 may be joined in series whereby sequential liquid extraction steps are conducted.
  • the screens used in each of the apparatus units may be the same or different in perforation size.
  • the two or more apparatuses may be provided in series wherein an upstream one of the apparatuses feeds the subsequent downstream apparatus.
  • such a series of apparatuses can serve as a fluid extraction process having multiple extraction stages.
  • the present invention may be used in conjunction with other known separation equipment.
  • the apparatus may be adapted to receive the solids product of an upstream separator such as a shaker screen etc., which would therefore result in a two stage solid/liquid separation with the present invention serving as second stage separator.
  • a further known separation device can be situated downstream from the apparatus of the invention.
  • the apparatus of the invention may serve as an intermediary separator between an upstream shaker device (such as a shale shaker) and a downstream centrifuge device. This arrangement provides a three stage separation.
  • saturated solids or slurry from the shaker unit are fed into the apparatus of the invention, thereby providing a first and second stage solid/liquid separation.
  • the solids resulting from the apparatus are then sent to centrifuge for a third or final extraction stage.
  • the apparatus of the invention increases the performance efficiency of such upstream and downstream equipment.
  • the apparatus 10 may be provided with heating or vacuum systems, as known to persons skilled in the art, to further enhance the extraction of liquids.
  • a vacuum system may be provided to create a vacuum around the screen 14 to increase the efficiency of extracting volatile liquid materials.
  • FIG. 1 schematically illustrates the apparatus of the invention according to another embodiment wherein elements that are similar to those shown in Figure 1 are identified with the same reference numeral.
  • the apparatus includes a frame 12 for supporting and containing the various components of the apparatus.
  • the frame 12 includes a base 40, which rests on the ground or floor etc.
  • the frame 12 also includes an auger support 42, which supports the auger 16 and allows the auger to rotate about a pivot point.
  • the material inlet 22 to the auger 16 comprises an opening to which is attached one end of a tube or trough 44.
  • the opposite end of the tube 44 is connected to the material hopper 20.
  • a material supply auger 46 is provided within the tube 44 and is operable to receive material from the hopper 20 and deliver same to the inlet 22 of the apparatus 10.
  • the material supply auger 46 terminates close to the bottom end of the apparatus auger 16, whereby material leaving the material supply auger 46 is delivered onto the apparatus auger 16.
  • the material supply auger 46 may be driven by motor 48 directly connected thereto.
  • the tube 44 and the associated delivery auger 46 may be of any required length so as to allow the distance between the hopper 20 and the apparatus 10 to be variable.
  • the tube 44 and auger 46 combination may be replaced with a moving conveyor, a chute or any other similar means that serves to deliver material to be separated to the auger 16.
  • the material supply auger 46 is generally horizontally arranged. However, various other orientations will be known to persons skilled in the art.
  • the supply auger 46 would need to be inclined accordingly.
  • one or more supply hoppers 20 may be provided along with one or more material supply augers 46.
  • each hopper 20 may be associated with one or more supply augers 46 and vice versa.
  • the auger 16 is driven by a motor 50 that is positioned at the upper end 11 of the apparatus 10.
  • the frame 12 is provided with a motor support 52 that may be of any suitable design or orientation.
  • the motor is operably connected to a drive shaft 54 that is connected to the upper end of the auger 16.
  • the auger 16 includes an axial shaft 56 from which extend the flightings 18.
  • the upper end of the shaft 56 includes a bore (not shown) to receive the drive shaft 54.
  • the drive shaft 54 may be hexagonal shape with the bore of the auger shaft 56 having a corresponding shape. In such manner, rotation of the drive shaft 54 results in rotation of the auger 16 about its longitudinal axis.
  • Figure 2 also illustrates a preferred embodiment wherein a choke plate 60 is provided at the upper end of the apparatus.
  • the choke plate 60 essentially serves as a closure to close of the upper end of the apparatus.
  • the choke plate 60 is preferably provided with a biasing means to maintain same in the closed position.
  • the biasing means comprise one or more springs 62 that are coaxial with bolts 64 extending there-through.
  • the bolts 64 are secured on their terminal ends to the choke plate 60.
  • the springs 62 extend from the upper surface of the choke plate 60 up to a stationary stop plate 66 that is either formed of or attached to the frame 12.
  • the springs 62 serve to apply a desired amount of downward pressure on the choke plate 60.
  • solid material exiting the apparatus 10 must apply a pressure surpassing the biasing force of the springs in order to exit the apparatus 10.
  • Such pressure which is applied by the force of the auger 16, would serve to further compress the solid material, thereby assisting in further removing any remaining liquid component.
  • the requirement for the choke plate 60 is optional and may not be required in situations where the auger itself is sufficient to separate the liquid component.
  • the degree of pressure applied by such choke plate against the exiting material can also be adjusted.
  • the bolds 64 may comprise adjusting bolts that can be tightened or loosened to increase or reduce pressure as needed.
  • the springs may be replaced with a pneumatic or hydraulic pressure means.
  • Figure 2 does not illustrate the screen 14 or the solids discharge chute 24.
  • Figure 3 illustrates a perspective elevation of the apparatus of the invention. Figure 3 depicts the chute 24 and illustrates the springs 62 biasing the choke plate.
  • Figure 4 illustrates the auger 16 in isolation but connected to the drive shaft 54 of the motor. As shown, the drive shaft 54 is provided within a bore of the auger shaft 56. As also shown in Figure 4, the auger may be provided in two or more sections that are axially connected. As will be understood, such orientation is used for convenience and that, when such sections are combined, the auger would function as a unitary body.
  • Figure 4 also illustrates the brush edge 68 provided on the flighting 18 of the auger. As explained above, such brush edge 68 serves to scrape the screen of the apparatus when the auger is in operation.
  • Figure 4 also illustrates a further embodiment wherein the flighting 18 of the auger is provided with ridges 70.
  • the present invention provides various advantages over the prior art.
  • the invention provides an apparatus and a method for the continuous extraction of liquids while minimizing or obviating the need to interrupt the operation for un- plugging the screens etc.
  • the method and apparatus of the invention provide a comparatively low energy and low cost means of liquid extraction.
  • One feature of the present invention lies in the fact that the subject apparatus is capable of processing materials of limited compressibility. In other words, material that is normally not subject to known compression liquid extraction mechanisms may be processed by the apparatus of the invention quite effectively.
  • a solid/liquid mixture (such as a slurry etc.) can be categorized by the manner in which the liquid component can be extracted. That is, the liquid can be either mechanically recoverable or mechanically unrecoverable.
  • the present invention serves to provide an apparatus that is capable of recovering as much of the liquid between solid particles as possible.
  • the solid material resulting from the extraction step would still retain some of the liquid in that the solid material would be generally moist. This is typical of any dewatering mechanism.
  • a further advantage of the apparatus of the invention relates to its generally vertical orientation. That is, the apparatus lifts the feed material upwards wherein the resulting solid mass is ejected from the upper end. This orientation allows the solid material to be stacked beside the apparatus. This will be understood as being an advantageous feature of the invention since it allows the solid material to accumulate without the need to have it removed to avoid impairing operation of the apparatus. In this way, the stacking or collecting of the output solid material avoids the urgency of material removal in the event that operation of the apparatus is accelerated.
  • the height of the apparatus of the invention would determine the size of the pile created and the amount of time the unit can be left unattended before it has to be removed. For example, most shale shakers or dryers are set 1.5 to 4 feet above the ground. During fast hole drilling operations, the processed material piles may need to be removed as often as every 15 min to avoid impairing the operations of such devices. However, with the device of the present invention, processing may be able to continue unattended for more than an hour depending upon the height of apparatus (e.g. 6 ft. etc.). It will also be understood that due to the increased liquid removal efficiency of the invention, the volume of output solid material would be less than that of shale shakers for example.
  • a further feature of the invention is related to the manner in which the apparatus operates. That is, the apparatus of the invention overcomes surface tension (i.e. the resistance of fluids to flow) by the application of pressure. The incoming wet material is forced against a screen (or porous sleeve) which functions as a barrier to solids but a path of least resistance for liquids.
  • Example 1 The following is an example of a suggested apparatus according the above description for use in separating liquid hydrocarbon components from wet drill cuttings: Height of apparatus: 1.07 m (3.5 feet) Inner diameter of cylindrical screen: 15.24 cm (6 inches) Outer diameter of cylindrical screen: 15.88 cm (6.25 inches) Thickness of screen: 6.35 mm (0.25 inch) Size of perforations on screen: 0.254 mm (10/1000 inch) [0061] It will be understood that this example is provided solely to illustrate one particular example of the apparatus. As discussed above, the apparatus can be of any dimension as dictated by the need and other criteria. The specific size of the apparatus is not a feature of the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
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  • General Engineering & Computer Science (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

La présente invention concerne un appareil pour séparer des composants liquides et solides d'un mélange solide humide qui comprend une tarière prévue de façon généralement co-axiale à l'intérieur d'un tamis ou manchon cylindrique perméable aux liquides. L'appareil est orienté avec une extrémité d'entrée positionnée de façon à être plus basse que l'extrémité de sortie. Le diamètre extérieur de la tarière est généralement proche du diamètre intérieur du manchon. L'entrée est adaptée pour recevoir l'alimentation en solide humide et charger l'alimentation sur l'extrémité inférieure de la tarière. La rotation axiale de la tarière fait en sorte que le matériau solide humide est forcé contre le manchon perméable aux liquides, forçant ainsi le composant liquide à travers le matériau de manchon perméable. Le composant solide est évacué par l'extrémité de sortie de la tarière. La présente invention concerne également un procédé d'extraction de liquides à partir d'un mélange solide humide.
PCT/CA2007/002059 2006-11-17 2007-11-16 Appareil et procédé de récupération de fluide Ceased WO2008058392A1 (fr)

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CA002669775A CA2669775A1 (fr) 2006-11-17 2007-11-16 Appareil et procede de recuperation de fluide

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US86637606P 2006-11-17 2006-11-17
US60/866,376 2006-11-17

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WO2011085218A1 (fr) * 2010-01-11 2011-07-14 Key Energy Services,Llc Réceptacle de collecte de reflux et procédé pour leur récupération
CN104667600A (zh) * 2015-02-10 2015-06-03 杭州电子科技大学 一种应用于随钻测井的井下过滤装置
FR3030559A1 (fr) * 2014-12-23 2016-06-24 Lepez Conseils Finance Innovations-Lcfi Dispositif de traitement gaz/solide par un reacteur a vis comprenant une brosse rapportee sur la vis
US9498739B2 (en) 2009-01-09 2016-11-22 Granbury Thompson Group, Llc Backflow collection system and method for reclaiming the same
CN108343391A (zh) * 2018-04-19 2018-07-31 西南石油大学 一种滚筒式的钻屑处理热分离结构
CN109341311A (zh) * 2018-08-16 2019-02-15 吴良桂 一种小麦颗粒循环干燥装置
IT201900018698A1 (it) * 2019-10-14 2021-04-14 Syncro S R L Dosatore continuo per materie plastiche granulari e simili provvisto di un sistema di pulizia
CN115822484A (zh) * 2023-02-06 2023-03-21 山东省煤田地质规划勘察研究院 一种水文地质工程地下河流钻探用泥浆池
CN117096487A (zh) * 2023-10-19 2023-11-21 珙县华洁危险废物治理有限责任公司成都分公司 一种湿法锂电池隔膜废料的白油快速回收方法

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CA2095292A1 (fr) * 1993-04-30 1994-10-31 Herbert G. J. Langner Presse de deshydratation des boues
JPH08323398A (ja) * 1995-03-24 1996-12-10 Anlet Co Ltd 立て型へどろ分離回収機
CA2267906A1 (fr) * 1996-10-07 1998-04-16 Spirac Engineering Ab Appareil de criblage

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9498739B2 (en) 2009-01-09 2016-11-22 Granbury Thompson Group, Llc Backflow collection system and method for reclaiming the same
US8449779B2 (en) 2009-01-09 2013-05-28 Granbury Thompson Group, Llc Backflow collection receptacle and method for reclaiming the same
US9687761B2 (en) 2009-01-09 2017-06-27 Granbury Thompson Group, Llc Backflow collection system and method for reclaiming the same
US9597614B2 (en) 2009-01-09 2017-03-21 Granbury Thompson Group, Llc Backflow collection system and method for reclaiming the same
WO2011085218A1 (fr) * 2010-01-11 2011-07-14 Key Energy Services,Llc Réceptacle de collecte de reflux et procédé pour leur récupération
FR3030559A1 (fr) * 2014-12-23 2016-06-24 Lepez Conseils Finance Innovations-Lcfi Dispositif de traitement gaz/solide par un reacteur a vis comprenant une brosse rapportee sur la vis
CN104667600B (zh) * 2015-02-10 2016-07-13 杭州电子科技大学 一种应用于随钻测井的井下过滤装置
CN104667600A (zh) * 2015-02-10 2015-06-03 杭州电子科技大学 一种应用于随钻测井的井下过滤装置
CN108343391A (zh) * 2018-04-19 2018-07-31 西南石油大学 一种滚筒式的钻屑处理热分离结构
CN109341311A (zh) * 2018-08-16 2019-02-15 吴良桂 一种小麦颗粒循环干燥装置
IT201900018698A1 (it) * 2019-10-14 2021-04-14 Syncro S R L Dosatore continuo per materie plastiche granulari e simili provvisto di un sistema di pulizia
CN115822484A (zh) * 2023-02-06 2023-03-21 山东省煤田地质规划勘察研究院 一种水文地质工程地下河流钻探用泥浆池
CN117096487A (zh) * 2023-10-19 2023-11-21 珙县华洁危险废物治理有限责任公司成都分公司 一种湿法锂电池隔膜废料的白油快速回收方法
CN117096487B (zh) * 2023-10-19 2024-02-09 珙县华洁危险废物治理有限责任公司成都分公司 一种湿法锂电池隔膜废料的白油快速回收方法

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