EP3060351A1 - Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse - Google Patents

Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse

Info

Publication number
EP3060351A1
EP3060351A1 EP14786883.0A EP14786883A EP3060351A1 EP 3060351 A1 EP3060351 A1 EP 3060351A1 EP 14786883 A EP14786883 A EP 14786883A EP 3060351 A1 EP3060351 A1 EP 3060351A1
Authority
EP
European Patent Office
Prior art keywords
suspension
solids
solid
discharge
mass
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.)
Granted
Application number
EP14786883.0A
Other languages
German (de)
English (en)
Other versions
EP3060351B1 (fr
Inventor
Tore Hartmann
Oliver Baumann
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.)
GEA Mechanical Equipment GmbH
Original Assignee
GEA Mechanical Equipment GmbH
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
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Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP3060351A1 publication Critical patent/EP3060351A1/fr
Application granted granted Critical
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Links

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
    • B04B1/10—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
    • B04B11/04—Periodical 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
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B04B11/05—Base discharge

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • Haze level of running out of the drum clear phase determined and used to monitor the emptying of the solids space of the drum.
  • the solid phase is continuously emptied. If the turbidity in the clear phase becomes too high, the clear phase is returned to the drum.
  • Klärseparator for the clarification of liquids, especially drinks, in which the solids discontinuously with the aid of a piston valve to open and close
  • Discharge openings are emptied when measured with the photocell turbidity exceeds a certain limit.
  • the invention has the object to solve this problem.
  • the invention solves this problem by a method having the features of claim 1.
  • a process for the continuous clarification of a flowable suspension or of a flowable product with a centrifuge in particular a discontinuously solids emptying - self-emptying - separator comprising a rotatable drum with a vertical axis of rotation an inlet for the suspension to be clarified and at least one liquid discharge to
  • discontinuous discharge of the solid phase characterized by the following steps: a) measuring one or more of the
  • Suspension parameters mass, mass of solids in suspension, mass flow, temperature, density, totalizer density; and b) triggering a temporary solids discharge as a result of a repeated determination after step b) upon reaching or after exceeding a limit value dependent on one or more of the measured suspension parameters.
  • the limit value can be one that can be determined directly from the (preferably) temporal behavior of the one or more suspension parameters. However, it may also be such a limit, which can be determined from the first (or second or nth) derivation of the temporal behavior of the one or more suspension parameters, for example in the form of a
  • the direct or indirect determination of one or two or more of said parameters makes it possible in each case to determine the solids mass (or a value proportional thereto) which has been separated from the suspension since the last discharge in order to draw conclusions about the degree of filling of the solids space to draw with solid separated from the suspension, which has collected in Feststoffsammeiraum.
  • the solid must not reach the edge of the plate stack. If, therefore, the determined solids mass value exceeds a predetermined limit value determined, for example, during test operation, an emptying is triggered in order to prevent the
  • the Coriolis flowmeter is adapted to measure in parallel the mass flow, the density and the density as a totalizer.
  • Density as a totalizer means that the density is measured time and again, that (directly or suitably processed, for example, with the time interval between the
  • the suspension to be processed has a relatively constant, constant solids content, it may be sufficient to determine the mass flow per unit time of incoming suspension for mass determination and to integrate it over time, in particular by summing it to obtain it
  • Coriolis flowmeter / sensor is performed, the degree of filling of the Feststoffsam melrau ms the drum can be determined.
  • the Coriolis flow meter (Coriolis meter) can be used to protect the self-draining separator or its drum from excessive in-feed densities by inhibiting feed (eg, by switching a valve) when the maximum allowable density for each self-draining separator is exceeded. This value is previously known and reported for each separator.
  • the individual process steps do not necessarily have to be carried out in one structural unit of the separator, but can also be carried out by external devices (in particular measuring devices, sensors, control unit individually or in
  • FIG. 2 shows a flowchart for illustrating a method according to the invention.
  • Fig. 1 shows a separator 1 for clarifying turbid-containing, flowable starting suspensions SU with a rotatable drum with vertical
  • Axis of rotation The processing of the suspension takes place in continuous operation. That is, the suspension feed takes place continuously and also the derivation of at least one clarified liquid phase, called the clear phase.
  • the self-draining separator has a discontinuous
  • Discharge nozzles or discharge openings 5 is emptied.
  • the drum has a drum base 10 and a drum cover 1 1. It is also preferably surrounded by a hood 12.
  • the drum is also placed on a drive spindle 2, which is rotatably mounted and driven by a motor.
  • the drum has a suspension inlet 4, through which a suspension to be clarified SU is fed into the drum. It also has at least one drain 13 with a gripper, which serves to derive a clear phase L from the drum.
  • the gripper is a kind of centripetal pump.
  • Liquid discharge could also be done by other means.
  • the drum preferably has a disk pack 14 of axially spaced separating discs. Between the outer periphery of the plate package 14 and the inner circumference of the drum in the region of its largest inner diameter, a solid sam mel rough m 8 is formed. Solids, which are in the range of
  • Plate packs 14 are separated from the clear phase, accumulate in the
  • Solid sam mel rough m 8 from which the solids can be discharged through the discharge openings 5 from the drum.
  • the discharge openings 5 can be opened and closed by means of a piston slide 6, which is arranged in the drum base 1 1. When the discharge openings are open, the solids F are thrown out of the drum into a solids catcher 7.
  • Actuation mechanism on.
  • this comprises at least one supply line 15 for a control fluid such as water and a valve assembly 16 in the drum and other elements outside the drum.
  • a control fluid such as water
  • the feed of the control field is made possible by means of a control valve 17 arranged outside the drum, which is arranged in a feed line 19 for the control fluid arranged outside the drum, so that the control fluid can be sprayed into the drum for emptying by release of the control valve or conversely, the flow of control fluid may be interrupted to move the spool valve to release the discharge ports.
  • Actuating mechanism - here the control valve 17 - is connected via a data line 18 to a control unit 9 for controlling and / or regulating the
  • a Coriolissensor 20 is arranged in the inlet 4.
  • the Coriolis sensor 20 is designed as a Coriolis mass flowmeter.
  • the function of a Coriolis mass flow meter designed Coriolissensors is known per se.
  • the two phases S and L can be determined proportionately by means of a density measurement which can also be carried out with the sensor 20 and known fluid properties of the suspension. Possibly. These fluid properties are determined during the trial or in trial operation.
  • the Coriolissensor 20 is connected via a wired or wireless data line 21 to the evaluation and control unit 9 (preferably a
  • Control computer of the separator which evaluates the measured values determined and controls the emptying and thus the opening of the discharge openings 5 as a function of this evaluation.
  • the suspension SU is preferably continuously fed into the separator in which it is clarified. There is a continuous Klarphasenaustrag the clear phase L.
  • the inlet 4 of the Coriolissensor 20 is arranged, with which in a step 100, a measurement of one or more of the suspension parameters mass, solid mass in suspension, mass flow, temperature, density and / or total density .
  • the signal from the Coriolis sensor 20 is transmitted from the control unit 9 of the separator or from one to the Coriolis sensor integrated electronics in a step 200 summed. This accumulated value is temporarily stored in a summation counter in the sensor itself or preferably in the control unit.
  • the summed value - preferably a mass value or a value proportional to the mass value - is compared in a step 300 with a predetermined and previously stored limit value.
  • this predetermined limit value may have been determined in advance during measurements in trial operation so that it corresponds to an 80% filling of the Feststoffsammeiraums with solid.
  • a step 400 the solids collection chamber is emptied by actuation of the
  • a step 500 the totalizer is reset to zero and it starts again measuring according to step 100 and a totaling of the measured values in the totalizer in step 200 repeatedly until a new emptying.

Abstract

Procédé d'épuration en continu d'une suspension fluide (P) à l'aide d'une centrifugeuse, en particulier à l'aide d'un séparateur à vidange de solides/vidange automatique discontinue, qui comporte un tambour rotatif à axe vertical, un tuyau d'amenée destiné à la suspension à épurer (P), au moins une ouverture d'évacuation de liquide pour évacuer en continu au moins une phase liquide épurée (L), et des ouvertures d'évacuation de matières solides à ouverture discontinue pour évacuer de manière discontinue la phase solide (S). Le procédé comporte les étapes consistant à : a) mesurer un ou plusieurs paramètres de la suspension, à savoir la masse, la masse solide dans la suspension, l'écoulement massique, la température, la densité, et la densité cumulée; et b) déclencher une évacuation de solides limitée dans le temps, à la suite d'une détermination répétée selon l'étape a) en cas de dépassement d'une valeur limite ou après ledit dépassement.
EP14786883.0A 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse Active EP3060351B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013111586.1A DE102013111586A1 (de) 2013-10-21 2013-10-21 Verfahren zur kontinuierlichen Klärung einer fließfähigen Suspension mit schwankendem Feststoffgehalt mit einer Zentrifuge, insbesondere einem selbstentleerenden Separator
PCT/EP2014/072435 WO2015059089A1 (fr) 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse

Publications (2)

Publication Number Publication Date
EP3060351A1 true EP3060351A1 (fr) 2016-08-31
EP3060351B1 EP3060351B1 (fr) 2020-03-11

Family

ID=51786942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14786883.0A Active EP3060351B1 (fr) 2013-10-21 2014-10-20 Procédé d'épuration en continu d'une suspension fluide à l'aide d'une centrifugeuse

Country Status (6)

Country Link
US (1) US10022729B2 (fr)
EP (1) EP3060351B1 (fr)
CN (1) CN105658337A (fr)
CA (1) CA2925202C (fr)
DE (1) DE102013111586A1 (fr)
WO (1) WO2015059089A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20145301A (fi) * 2014-03-31 2015-10-01 Waertsilae Finland Oy Menetelmä keskipakoseparaattorin tyhjennysajoituksen ohjaamiseksi ja keskipakoseparaattori
WO2017005676A1 (fr) 2015-07-09 2017-01-12 Tetra Laval Holdings & Finance S.A. Procédé et dispositif de standardisation en ligne de la teneur en graisses d'un produit laitier
DE102015119165B4 (de) * 2015-11-06 2022-06-09 Gea Mechanical Equipment Gmbh Verfahren zur Klärung eines fließfähigen Produktes mit einer Zentrifuge, insbesondere einem Separator
DE102017111672B4 (de) * 2017-03-29 2019-05-16 Gea Mechanical Equipment Gmbh Verfahren zur automatisierten Feststoffentleerung von Zentrifugen
JP6941519B2 (ja) * 2017-09-20 2021-09-29 三菱化工機株式会社 遠心分離装置の制御装置、遠心分離装置、舶用排気ガススクラバーシステム、および舶用ディーゼルエンジン
DE102017128027A1 (de) * 2017-11-27 2019-05-29 Gea Mechanical Equipment Gmbh Separator
CN112827668B (zh) * 2020-12-31 2022-11-01 青岛诺凯达机械制造有限公司 一种蝶式离心机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186414B (de) 1963-10-24 1965-01-28 Westfalia Separator Ag Verfahren und Vorrichtung zur Steuerung einer Schlammzentrifuge
GB1587853A (en) 1978-03-08 1981-04-08 Zoblin P V Separator control method and device
DE2814523C2 (de) 1978-04-04 1985-11-14 Ruslan Ivanovič Batyrev Verfahren und Einrichtung zur Steuerung einer Zentrifuge zur Trennung einer Zweiphasen-Suspension
DE3228074A1 (de) 1982-07-28 1984-02-02 Westfalia Separator Ag, 4740 Oelde Verfahren und vorrichtung zur optimierung der geklaerten phase und der feststoffkonzentration bei einer zentrifuge mit kontinuierlichem feststoffaustrag
DE3632800A1 (de) 1986-09-26 1988-04-07 Flowtec Ag Nach dem coriolisprinzip arbeitendes massendurchflussmessgeraet
US5318500A (en) * 1992-10-15 1994-06-07 Eli Lilly And Company Method for controlling intermittently discharged centrifuges
US5796012A (en) 1996-09-19 1998-08-18 Oval Corporation Error correcting Coriolis flowmeter
US6636815B2 (en) 2001-08-29 2003-10-21 Micro Motion, Inc. Majority component proportion determination of a fluid using a coriolis flowmeter
EP1668321B1 (fr) 2003-09-29 2010-12-15 Micro Motion, Inc. Appareil de diagnostic et methodes pour un debitmetre de coriolis
CN101342516B (zh) * 2008-06-23 2011-04-13 薛晓宁 平带传动碟式分离机
SE533360C2 (sv) * 2009-02-24 2010-09-07 Alfa Laval Corp Ab Centrifugalseparator och metod för separering
DE102010000755B4 (de) 2010-01-08 2018-12-13 Endress+Hauser Flowtec Ag Anordnung zur Messung der Viskosität einer gleichmäßig temperierten Flüssigkeit
SE535959C2 (sv) 2010-01-29 2013-03-05 Alfa Laval Corp Ab System innefattande centrifugalseparator samt metod för kontroll av detsamma
CN102614996A (zh) * 2012-03-15 2012-08-01 张家港市腾龙机械制造有限公司 吊袋离心机
EP2644278B1 (fr) * 2012-03-27 2014-12-10 Alfa Laval Corporate AB Séparateur centrifuge et procédé de commande de décharge intermittente

Also Published As

Publication number Publication date
EP3060351B1 (fr) 2020-03-11
DE102013111586A1 (de) 2015-04-23
CA2925202C (fr) 2021-06-01
US10022729B2 (en) 2018-07-17
CN105658337A (zh) 2016-06-08
CA2925202A1 (fr) 2015-04-30
US20160271625A1 (en) 2016-09-22
WO2015059089A1 (fr) 2015-04-30

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