Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
  • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
  • B04B1/12—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with continuous discharge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
  • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B11/00—Feeding, charging, or discharging bowls
  • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B11/00—Feeding, charging, or discharging bowls
  • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
  • B04B11/082—Skimmers for discharging liquid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
  • B04B2013/006—Interface detection or monitoring of separated components

Definitions

• the invention relates to a separator according to the preamble of claim 1.
• Such separators have been known for a long time.
• the liquid discharges are provided with so-called paring discs, in which the effect is utilized that the rotational energy of the incoming liquid is converted into a back pressure in the discharge line.
• Such peeling disks have proven themselves.
• paring discs to both fluid outlets.
• a known three-phase separator is shown in FIG. If one or both of the two diesstechniksausträge or -auslasse from the drum associated with a paring disc and the other outlet formed like a nozzle, there is a range delta LP, within which the paring disc by throttling a shift of the separation zone in the drum allowed (see, eg WO 86/01436).
• the range of the displaceability of the separation zone is still relatively low and it is also not readily possible to move over the peeling discs, the separation zone in the area fast enough.
• the shift also does not always lead to stable process conditions, since the variation of the throttling of the peeling disk processes directly affects several parameters of the process.
• US Pat. No. 4,417,885 A shows a fluid seal on a peeling-disk-like outlet of a separator.
• WO 2006/096113 and WO 92/07658 also propose to give pressure in the inlet region of a centrifuge.
• Another three-phase separator is known from DE 10 2005 021 331.6.
• This document proposes a separator with a separator drum, which has a feed pipe for a product to be processed, at least two liquid outlets for one lighter phase and a heavier phase, Feststoffaustragsöffhungen, preferably in the region of its largest inner circumference, arranged in the separator drum Trenntelleron and an adjustable throttle device outside the drum, which preferably has a ring or throttle disc and is adapted to the liquid radius, up to the the heavy phase extends in the drum, by changing the outlet cross-section for the heavy liquid phase - ie by throttling - to move.
• This construction has proven itself, but desirable is a further structural simplification.
• the invention therefore has the object of further developing the generic separator such that a displacement of the separation zone within the drum over a sufficiently large radial region is possible in a structurally simple manner during operation, with good adjustability of the position of the separation zone being possible should.
• crude oils such as some crude oils (petroleum crude oils) can also outgas carbon dioxide, which can lead to an increase in the pH levels in crude oil and in the Formation of calcium naphthanate or other compounds can be, which can have a detrimental effect on the process stability in the drum.
• the vapor pressure of the two liquids may be different, which may lead to a shift of the E-line due to the difference in the chamber pressures Pl and P2.
• the invention also proposes a method in which a separator according to the invention is used after this step (maintaining a pressure on the liquid phase which is higher than the vapor pressure of the corresponding liquids).
• the separator according to the invention is outstandingly suitable for a wide variety of three-phase separation tasks, in particular for processing crude oil, in which the crude oil is clarified by solids and water is separated from the crude oil. It is also suitable for drilling water treatment, where water is separated from oil and clarified by solids.
• the liquid outlet for the lighter phase (LP) is provided with a paring disc.
• the liquid outlet for the heavier phase (HP) may be provided with a paring disc.
• the pressure chamber upstream of one of the liquid outlet or two diesstechniksauslässen.
• one or the one or more pressure chambers it is also possible for one or the one or more pressure chambers to be formed in the region of an inlet chamber.
• FIG. 1 shows a section through one half of a separator drum according to the invention, shown purely schematically;
• FIG. 2 shows a section through an exemplary embodiment of a drive region for a separator drum in the manner of FIG. 1;
• FIG 3 shows a section through one half of a schematically illustrated separator drum according to the prior art.
• Figures 1 and 3 each show Separatortrommeln 1, which have a vertically oriented axis of rotation at the radius r 0 .
• the Separatortrommem 1 are each set on a rotary spindle 2, the e.g. 2 directly or via a belt driven (not shown here) or otherwise (for example, a transmission).
• the rotary spindle 2 can be made conical in its upper circumferential area.
• the rotary spindle 2 is mounted with at least one or more bearings 3 on one side of the drum - here below the drum - oscillating and therefore describes in operation due to residual unbalance unlike a decanter a new axis adjusts a kind of precession movement around the vertical r 0 ( see Figure 2, in which the inclination angle ⁇ is shown) describe.
• constructions are also known in which a lower drum is quasi (suspended) on an upper rotary spindle, but here too the drum is mounted so that it can oscillate freely only at one of its ends or at one of its axial ends.
• the separator drum 1 has a feed pipe 4 for a product P to be hurled, to which a distributor 5 adjoins, which is provided with at least one or more outlet openings 6, through which incoming centrifugal material (crossed hatching) into the interior of the separator drum 1 and the Rising channel 7 of the plate package can be passed.
• a supply line through the spindle for example, from below is also conceivable.
• the construction is chosen such that the Auseriesöffhungen 6 below a riser channel 7 in a disc package 8 (outer diameter at reference numeral 8) are conically shaped separating discs.
• the plate pack 8 is closed off by a divider plate 10, which has a larger diameter than the partial pack ⁇ .
• a separation zone between a lighter liquid phase LP (hatching) is formed within the separating disk package and preferably within the rising channel 7 from bottom left to top right) and a heavy liquid phase HP (hatching to the lower right).
• the lighter liquid phase LP (light phase) is conducted at an inner radius r LP with the aid of a paring disc 11 (also called a gripper) from the drum. With the help of the generated by the rotational energy of the fluid dynamic pressure, the paring disc 11 acts like a pump.
• the peeling disk 11 is downstream of a valve for throttling, for example, outside of the separator in the downstream discharge.
• the heavy liquid phase HP flows around the outer circumference of the
• Figures 1 and 3 correspond. They are also providable with the same drive devices.
• the constructions according to the invention - see, for example, those of FIG. 1 - are provided with a device which allows them to react to changing properties of the product to be processed during operation.
• the overflow 13 for the heavy phase is located on the radius I D at the upper axial end of the separator drum.
• a baffle plate 14 is arranged axially in front of the overflow 13, which extends from the inside to the outside and whose largest radius r i4 is greater than the radius ⁇ HD , SO that the heavy phase before exiting from the overflow 13 to the baffle plate 14 must flow around the outside.
• the peeling chamber 9 around the paring disc 11 is bounded axially downwards and upwards also by two locking discs 15, 16 which extend radially from the outside inwards to radii r 15 and r 16 which are smaller than the external radius rl 1 the peeling disk 11.
• the peeling disk 11 protrudes with its peeling disk portion with its inlet openings correspondingly with the exception of a radius rl 1 which is greater than the inner radius of the locking disks 15, 16.
• a pressure chamber 17 is formed, in which a feed line 18 opens.
• the pressure chamber 17 can be acted upon by the supply line 18 with an upstream valve 19 with a fluid, in particular a gas.
• a variation of the fluid pressure in the pressure chamber 17 results in a displacement of the liquid level R m of the heavy phase in the pressure chamber 18 between the inner radius ri 5 (otherwise a flood of the pressure chamber 17 would result) and also not smaller than r L2 (as this would push the E-line into the center of the drum leaving no room for the light phase LP) and the outer radius r 14 and shifting the liquid levels of the light phase LP above and below the paring disc 11 in the peeling chamber 9.
• the pressure chamber 17 offers a structurally simple way of adjusting the control of the position of the emulsion line (E line) and thus leads to a better controllability and controllability of the process. This also results in an enlarged adjustment range of the separation zone.

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• Centrifugal Separators (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=38473084

Family Applications (1)

Country Status (9)

Families Citing this family (19)

Citations (6)

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• 2007
  • 2007-06-30 DE DE202007009212U patent/DE202007009212U1/de not_active Expired - Lifetime
• 2008
  • 2008-06-27 US US12/667,246 patent/US8628458B2/en not_active Expired - Fee Related
  • 2008-06-27 BR BRPI0813784-6A2A patent/BRPI0813784A2/pt not_active IP Right Cessation
  • 2008-06-27 RU RU2010102120/05A patent/RU2465052C2/ru not_active IP Right Cessation
  • 2008-06-27 EP EP08773715A patent/EP2162225A1/de not_active Withdrawn
  • 2008-06-27 WO PCT/EP2008/005240 patent/WO2009003639A1/de active Application Filing
  • 2008-06-27 AU AU2008271581A patent/AU2008271581B2/en not_active Ceased
  • 2008-06-27 CN CN2008800229653A patent/CN101687204B/zh not_active Expired - Fee Related
  • 2008-06-27 CA CA2691931A patent/CA2691931C/en not_active Expired - Fee Related

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Non-Patent Citations (1)

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