EP0997196A2 - Verfahren und Vorrichtung zur Zerkleinerung von Material - Google Patents

Verfahren und Vorrichtung zur Zerkleinerung von Material Download PDF

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Publication number
EP0997196A2
EP0997196A2 EP99307872A EP99307872A EP0997196A2 EP 0997196 A2 EP0997196 A2 EP 0997196A2 EP 99307872 A EP99307872 A EP 99307872A EP 99307872 A EP99307872 A EP 99307872A EP 0997196 A2 EP0997196 A2 EP 0997196A2
Authority
EP
European Patent Office
Prior art keywords
vessel
ground
outlet
inlet
drill cuttings
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.)
Withdrawn
Application number
EP99307872A
Other languages
English (en)
French (fr)
Other versions
EP0997196A3 (de
Inventor
Alastair Scott Murray
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.)
QED International Ltd
Original Assignee
QED International 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 QED International Ltd filed Critical QED International Ltd
Publication of EP0997196A2 publication Critical patent/EP0997196A2/de
Publication of EP0997196A3 publication Critical patent/EP0997196A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting

Definitions

  • the present invention relates to a method of, and apparatus for, grinding materials, and particularly but not exclusively, relates to a method of, and apparatus for, grinding drill cuttings produced while drilling oil, gas or water wells.
  • drill cuttings are produced from the formation being drilled.
  • the drill cuttings produced will often be coated in oil.
  • economic and environmental concerns mean that neither of these conventional methods are particularly acceptable.
  • Conventional apparatus for grinding materials are known to include substantially horizontal grinding cylinders into which the material to be ground is placed, and the cylinders are vibrated.
  • the cylinders are filled to about 60-70% with a grinding medium, which are conventionally steel or ceramic balls.
  • the material being ground is introduced into the cylinder at one end, and passes longitudinally through the cylinder, in a complex manner, thus allowing the grinding medium to reduce it.
  • an apparatus for grinding material comprising a vessel for containing a grinding medium, a means for imparting a vibration force upon the vessel, an inlet to permit the material to be ground to be input into the vessel, and an outlet to permit the ground material to exit the vessel, where the inlet and the outlet are vertically spaced apart.
  • a method of grinding material comprising inserting the material to be ground into a vessel containing a grinding medium, applying a vibrating force to the vessel, and permitting the ground material to exit the vessel from an outlet, where the inlet and the outlet are vertically spaced apart.
  • the material to be ground may be input into the vessel after being subject to a primary separation process.
  • the material to be ground is drill cuttings.
  • a method of disposing of drill cuttings comprising inserting the drill cuttings into the inlet as defined in the first or second aspect of the present invention, and disposing of the ground drill cuttings which exit the outlet, as defined in the first or second aspect of the present invention.
  • the drill cuttings may be disposed of in the sea, or alternatively, may be disposed of by including the ground material in a slurry, and preferably, reinjecting the slurry into a borehole.
  • the material to be ground travels in a substantially vertical direction through the grinding medium.
  • the vessel is a substantially cylindrical vessel, and in use, the vessel is preferably substantially vertical.
  • the grinding medium is a ball charge which may be comprised of balls having a similar diameter, or alternatively, may be comprised of balls having a differing diameter.
  • the means for imparting a vibrating force on the vessel is at least a pair of vibratory motors, and more preferably, the vibratory motors are coupled to the vessel at either side of the vessel, and most preferably, the vibratory motors are arranged diametrically opposite each other, and preferably, counter rotate with respect to one another.
  • This provides the invention with the advantage that the vibrating force generated acts in a vertical direction with respect to the centre line of the cylinder.
  • the vibratory motors are counter rotating, out of balance motors, and may be electric vibratory motors.
  • the vibrating motors may be pneumatic vibratory motors, or alternatively may be hydraulic vibratory motors.
  • the vessel is supported by a vibration damping means.
  • the inlet and the outlet are conduits which may comprise conduit vibration damping means.
  • FIG. 1 is a schematic view of an apparatus for grinding material in accordance with the present invention.
  • Fig. 1 shows a vibrating grinding mill 10 in accordance with the present invention.
  • the mill 10 comprises a cylindrical body 1 which is configured in a substantially upright position.
  • the cylindrical body 1 is supported from the ground by a resilient mounting 2, such as a set of springs or rubber blocks.
  • a resilient mounting 2 such as a set of springs or rubber blocks.
  • the cylindrical body 1 could be supported from above by steel wire, and in this configuration the steel wire would be similarly provided with a resilient mounting 2.
  • Attached at either side of the cylindrical body 1 are two suitably sized electric vibrating motors 3 which are mounted diametrically opposite each other approximately one third of the way up of the vertical height of the cylindrical body 1.
  • the vibrating motors 3 are run in such a manner as to generate a high vibration force which acts in a vertical direction with respect to the centre line of the cylindrical body 1.
  • An example of a suitable vibrating motor 3 is a counter rotating roller unit, product no MVSI 3/900-290 offered by Vibratechniques Limited of the United Kingdom.
  • the electric vibrating motors 3 are arranged such that they counter rotate with respect to each other. It should be noted that additional pairs of vibrating motors 3 could be further attached to the outer surface of the cylindrical body 1 as long as they are diametrically opposite each other.
  • An upper conduit 5 is located at the upper end of the cylindrical body 1, and a lower conduit 6 is located at the lower end of the cylindrical body 1.
  • One of the upper 5 and lower 6 conduits are used to input material to be ground into the cylindrical body 1, and the other of the upper 5 or lower 6 conduits provides an outlet for the ground material.
  • An alternative conduit 18 is located at the side of the lower end of the cylindrical body 1.
  • the upper 5, lower 6 and alternative 18 conduits all have vibration isolation pipework 8 sections therein which could typically could be formed from a concertinaed rubber material. This vibration isolation pipework 8 isolates the vibrating mill 10 from pipework outwith the mill 10.
  • the uppermost end of the cylindrical body 1 is provided with a removable cover 7 to permit access into the interior of the cylindrical body 1.
  • An optional liquid additive inlet 15 is also provided to allow liquid additives to be input into the interior of the cylindrical body 1 to enhance the grinding of the material (not shown).
  • the interior of the cylindrical body 1 is filled to a suitable height with a grinding medium 4, which is typically ball charge 4 in the form of steel or ceramic balls.
  • the ball charge 4 can be chosen to suit the material to be ground.
  • the ball charge 4 can be all of the same diameter.
  • the ball charge is of differing diameters, and is therefore a size graded ball charge 4.
  • the grading or sizing of the ball charge 4 is selected to give a reducing "nip angle" as the material travels through the ball charge 4, and thus avoid excessive space between the balls.
  • the lower 6 and alternative 18 conduits are provided with perforated plates 20 at their respective entrance to the cylindrical body 1 to ensure that the ball charge 4 is retained within the cylindrical body 1.
  • the vibrating mill 10 is operated by counter rotating the pair of vibration motors 3. This consequently induces a vibration on the cylindrical body 1, which in turn provides a vibratory motion to the ball charge 4, in a vertical direction with respect to the centre line of the cylindrical body 1.
  • the material to be ground (not shown) can then, for instance, be inserted into the cylindrical body 1 via the upper conduit 5.
  • the material to be ground will then, naturally due to gravity, fall through the ball charge 4 and will be progressively ground as it follows its path therethrough.
  • the ground material will then exit the cylindrical body 1 via the lower conduit 6, or alternatively the alternative side conduit 18.
  • the material to be ground can be input into the cylindrical body 1 via the upper 5 or lower conduit 6 or the alternative side conduit 18 by means of a pump (not shown), which pumps the material to be ground up through the ball charge 4 to exit the cylindrical body 1 through the lower conduit 6, or upper conduit 5 or alternative side conduit 18.
  • a pump not shown
  • the advantage of providing a vertical flow path for the material to be ground is that there is an additional 1g of force added to the ball charge 4, due to gravity.
  • the ball charge 4 can be chosen with the biggest balls being able to accept the biggest material to be ground into their nip angle, and the smallest balls being chosen to provide a nip angle defining how fine the ground material is to be.
  • each mill 10 within the series is likely to have a progressively smaller ball charge 4, and additionally may have progressively smaller charge 4 layered within.
  • The, or each, vibrating mill 10 is preferably installed in a close proximity to where the material to be ground is produced and disposed of. In the case of drill cuttings produced by an offshore drilling rig, this location is the drilling rig itself.
  • the ground drill cuttings from the vibrating mill(s) 10 expected to be sufficiently fine for disposal, either overboard into the sea if environmentally acceptable or included in a slurry for reinjection into a borehole, to be a practical solution to the problem of disposing of the drill cuttings.
  • Control of the ground material particle size would be affected simply by controlling either the feed input rate into the cylindrical body 1, or alternatively the discharge rate. Also shale shakers, hydrocyclones, and other conventional external material grading apparatus could also be used as separation or grading equipment before and after the vibrating mill 10.
  • the grinding effect of the vibrating mill 10 of the present invention is governed by the potential kinetic energy of the ball charge 4 as a whole, rather than of each ground material particle as in conventional vibration mills. Further, the vibrating mill 10 can be run at far higher frequencies than conventional vibration mills. In addition, the vibrating mill 10 of the present invention is far more efficient since the material to be ground may only have to make one pass through the ball charge 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP99307872A 1998-10-06 1999-10-06 Verfahren und Vorrichtung zur Zerkleinerung von Material Withdrawn EP0997196A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9821638 1998-10-06
GBGB9821638.5A GB9821638D0 (en) 1998-10-06 1998-10-06 Method of and apparatus for grinding materials

Publications (2)

Publication Number Publication Date
EP0997196A2 true EP0997196A2 (de) 2000-05-03
EP0997196A3 EP0997196A3 (de) 2000-12-20

Family

ID=10839988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99307872A Withdrawn EP0997196A3 (de) 1998-10-06 1999-10-06 Verfahren und Vorrichtung zur Zerkleinerung von Material

Country Status (2)

Country Link
EP (1) EP0997196A3 (de)
GB (1) GB9821638D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008031244A1 (de) * 2006-09-13 2008-03-20 Bühler AG Maschine zur behandlung eines fliessfähigen förderbaren materials
WO2017077245A1 (fr) * 2015-11-04 2017-05-11 Haffner Energy Dispositif de pyrolyse avec secousses
CN111729730A (zh) * 2020-07-03 2020-10-02 北京实通科技有限公司 一种大型模块化高能磨机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1089337A (en) * 1963-10-12 1967-11-01 Bayer Ag Stirring mills
US4047672A (en) * 1975-06-10 1977-09-13 Vladimir Vladimirovich Volkov Apparatus for disintegration of materials
US4480702A (en) * 1981-12-11 1984-11-06 Mobil Oil Corporation Method and apparatus for drilling oil well and treating drilling mud
US4739938A (en) * 1986-01-14 1988-04-26 Mitsui Miike Kakoki Kabushiki Kaisha Media agitating type grinding machine
EP0451290A1 (de) * 1989-10-31 1991-10-16 Kansai Zyari Kabushiki-Kaisha Sichter mit schwingmühle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1089337A (en) * 1963-10-12 1967-11-01 Bayer Ag Stirring mills
US4047672A (en) * 1975-06-10 1977-09-13 Vladimir Vladimirovich Volkov Apparatus for disintegration of materials
US4480702A (en) * 1981-12-11 1984-11-06 Mobil Oil Corporation Method and apparatus for drilling oil well and treating drilling mud
US4739938A (en) * 1986-01-14 1988-04-26 Mitsui Miike Kakoki Kabushiki Kaisha Media agitating type grinding machine
EP0451290A1 (de) * 1989-10-31 1991-10-16 Kansai Zyari Kabushiki-Kaisha Sichter mit schwingmühle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008031244A1 (de) * 2006-09-13 2008-03-20 Bühler AG Maschine zur behandlung eines fliessfähigen förderbaren materials
WO2017077245A1 (fr) * 2015-11-04 2017-05-11 Haffner Energy Dispositif de pyrolyse avec secousses
CN111729730A (zh) * 2020-07-03 2020-10-02 北京实通科技有限公司 一种大型模块化高能磨机

Also Published As

Publication number Publication date
EP0997196A3 (de) 2000-12-20
GB9821638D0 (en) 1998-11-25

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