EP3137220B1 - Hydrodynamische schwerstoffabtrennung einer aufschlämmung - Google Patents

Hydrodynamische schwerstoffabtrennung einer aufschlämmung Download PDF

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Publication number
EP3137220B1
EP3137220B1 EP16728658.2A EP16728658A EP3137220B1 EP 3137220 B1 EP3137220 B1 EP 3137220B1 EP 16728658 A EP16728658 A EP 16728658A EP 3137220 B1 EP3137220 B1 EP 3137220B1
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EP
European Patent Office
Prior art keywords
flushing water
storage chamber
flow
actuator
classifying tube
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.)
Active
Application number
EP16728658.2A
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German (de)
English (en)
French (fr)
Other versions
EP3137220A1 (de
Inventor
Roland Carra
Patrick Fluck
Tobias Ziegler
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.)
BTA International GmbH
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BTA International 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
Application filed by BTA International GmbH filed Critical BTA International GmbH
Priority to PL16728658T priority Critical patent/PL3137220T3/pl
Publication of EP3137220A1 publication Critical patent/EP3137220A1/de
Application granted granted Critical
Publication of EP3137220B1 publication Critical patent/EP3137220B1/de
Priority to HRP20171339TT priority patent/HRP20171339T1/hr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B03B5/34—Applications of hydrocyclones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • B03B13/02—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects using optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • B03B13/04—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects using electrical or electromagnetic effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks

Definitions

  • the invention relates to a device for the separation of heavy materials from a slurry of components of different density and different particle structure.
  • a device for hydrodynamic separation of heavy material from a slurry comprising a slurry receiving hydrocyclone (1), a separate heavy matter receiving separate storage chamber (7) and an actuator (11) for controlling the flushing water flow to the storage chamber.
  • Organic wastes suitable for fermentation may contain mineral heavy materials of 4% by weight ( Kübler, H., Hoppenheidt, K., Hirsch, P., Kottmair, A., Nimmrichter, R., Nordsieck, H., M., Mücke, W., Swerev (2000) Play scale co-digestion of organic waste , Water Science & Technology 41, 195-202 ).
  • Municipal biowaste contains relevant quantities of mineral heavy materials such as stones, broken glass, split or gravel or sand, which according to the investigations by Kranert et. al. ( Kranert, M., Hartmann A., Graul S. (1999) Determination of sand content in digestate. In: W. Bidlingmaier et al.
  • the readily sedimentable fractions are often separated from the suspension.
  • heavy material separators are used.
  • these heavy material separators must also minimize the discharge of the other constituents present in the slurry and to be utilized in the downstream process stages, for example fermentable organic substances. This can be done by a combination of hydrocyclone and classifying tube, which is located in the lower reaches of the hydrocyclone, for discontinuous discharge of the Separated heavy materials can be achieved.
  • the classifying tube is frequently supplied with rinsing liquid. As a result, a countercurrent is generated in the classifying tube, which frees the separated heavy materials from the other Bestan constitution the slurry.
  • Such a device is in the DE 195 05 073 A1 with a flat bottom hydrocyclone for separating heavy materials from a slurry made from waste materials.
  • the flat-bottomed cyclone is followed by a classifying pipe to increase the selectivity of the heavy material separator.
  • the separated heavy materials are collected in the lower reaches of the Classierrohres by means of a lock system with integrated chamber and discharged discontinuously. If, following emptying of the chamber, the shut-off valve is opened to the classifying tube, the content of the classifying tube and part of the contents of the hydrocyclone are discharged into the chamber at one go. On the other hand, it can happen that the heavy substances in the chamber become caked and thus make it difficult, if not impossible, to discharge them from the chamber.
  • the degree of separation of the sedimentable constituents and the discharge of other components is strongly influenced by the flushing water flow, which generates a counterflow in the classifying tube.
  • the rinsing water flow in relation to the desired separation of the fractions have mutually opposite effects: Reducing the rinse water flow leads to an improved separation of easily sedimentable solids from the suspension, but increases the proportion the biologically recoverable components in the separated heavy fraction. These are thus withdrawn from the downstream process stages for the recovery of the suspension.
  • increasing the flushing water flow has the opposite effect, namely that the proportion of biologically utilizable constituents in the separated heavy fraction is decreasing, but the separation of the readily sedimentable constituents from the suspension deteriorates.
  • the Fig. 1 shows this contrarian effect based on operating results of a hydrodynamic heavy material separation process stage in a fermentation plant for 75,000 Mg / a of organic waste.
  • process water In order to limit the demand for fresh water and consequently also the amount of waste water, it is important, especially for economic as well as ecological aspects, to use process water as rinsing water, which is recirculated in the system (process water).
  • process water This requires a process step that provides the process water in terms of pressure levels in the heavy material separator under sufficiently high pressure. From the point of view of costs and space requirements, the diameters of the process water pipes must be limited.
  • process water demand peaks occur in the heavy material separator itself as well as in other upstream or downstream units of the wet mechanical processing plant. As a result, there are always considerable pressure fluctuations in the process water supply of the classifying pipe.
  • the object of the invention is now to improve the degree of separation of the device and to reduce the contamination of the separated fraction. This object is achieved by a device according to claim 1, or by a method according to claim 13.
  • the basic idea of the invention taking into account the above-described effects of the flushing water flow, is that depending on the requirement profile for plant operation, an optimum amount and pressure of the flushing water flow to the classifying tube determined and adjusted according to the flow rate of the rinse water. Furthermore, it is part of the invention to minimize the flushing water consumption to the storage chamber.
  • the control technique of the present invention takes into account the above-described significant pressure fluctuations in the rinse water supply of the classifier tube and the storage chamber. Thereby, the negative impact on the separation efficiency can be eliminated, whereby the separation quality of the separated heavy materials increases and a reduced Spülement site is the result.
  • the adjustment of the flushing water flow relates, on the one hand, to the inlet to the classifying pipe and, on the other hand, to the storage chamber separated from the classifying pipe, into which the separated heavy materials are introduced.
  • both the classifying pipe and the separate storage chamber are subjected to rinsing water. This is done in such a way that the inlet to the classifying pipe is regulated and the inlet to the storage chamber is controlled. While the control determines a comparison between the actual state and the target state and switches an actuator in response thereto, the control of the inlet to the storage chamber focuses on the detection of the actual state to switch a corresponding actuator.
  • the heavy material separator is equipped with a detection of the level of heavy material in the storage chamber for initiating its emptying and a detection of the rinsing water overflow during its filling with rinsing water.
  • the emptying of the storage chamber takes place only when the maximum level of heavy materials in the storage chamber is determined by measurement. Thus, a complete filling of the storage chamber is always ensured and thus minimizes the number of required emptying.
  • the filling of the storage chamber with the rinse water is terminated only when process water is detected in the overflow of the storage chamber. Both features lead to a minimum need for rinse water.
  • the emptying of the storage chamber is initiated by the detection of the maximum level of heavy materials and the supply of process water when filling the emptied storage chamber by detecting the overflow of process water from the chamber finished.
  • the emptying of the storage chamber is carried out after detection of the maximum Schwofoff Stahles by closing the shut-off valve to the classifying pipe and opening the lower shut-off valve of the storage chamber.
  • the storage chamber is timed short rinse water pulses supplied to prevent caking of the bed of heavy materials in the storage chamber.
  • the bed can completely fall out or be removed when opening the chamber.
  • the process water for rinsing purposes is initially generated in-process by means of a solid-liquid separation during the treatment of mixtures.
  • the process water production with economical use of precipitants and flocculants, provides a rinse water with a considerable content of suspended matter of 1 to 10 g / l.
  • the concentration of suspended substances in the process water is often in the range of 0.5 to 4 g / l.
  • actuators In order to achieve a uniform rinsing water supply, the choice of the actuator depending on the Aufschlämmanteils in the process water can be crucial. This is mainly due to a random partial laying by suspended in the process water substances in the actuator.
  • actuators have discs of disks, which are adjusted against each other via an axis and the opposite movement of the free passage continuously changed, pinch valves, ball sector valves or ball valves proven.
  • Fig. 3 shows a diagram of an embodiment according to the invention of a hydrodynamic heavy material separation consisting of hydrocyclone (1), classifying pipe (2) and storage chamber (3).
  • the rinsing water flow to the classifying pipe (4) is regulated and controlled to the storage chamber (5).
  • the adjustment of the Spülwasseraufstromes in the classifying tube by means of an actuator (6) which is not easily laid by suspended materials and has a self-cleaning effect, as mentioned above.
  • the supply of process water during filling of the emptied storage chamber is controlled by a detection of the overflow of process water (7) from the chamber.
  • the elements mentioned above as suitable actuators are combined in a preferred embodiment with a flow meter for the flushing water (8).
  • This flow meter must be suitable for solids containing water flows.
  • the detection of the overflow of the solids-containing process water (7) for filling the chamber can be done by means of a capacitive proximity switch or infrared light barrier.
  • Motor control valves in a flat rotary valve design in the throttle body allow a linear flow change.
  • such valves represent a proportional-regulating actuator, which ensures a constant flushing water flow even with solids-containing process water.
  • the control is designed so that the previously assumed valve position is maintained in the event of a power failure.
  • Fig. 2 shows the operating result of the hydrodynamic Schwerstoffabscheiders with regulated Spülwasserstrom to Klassierrohr when using a process water containing suspended matter, and a Flachfilterschieber throttle body in combination with an upstream magnetic-inductive flow measurement served.
  • These system components enabled the supply of solids-containing process water to the classifying pipe to be kept relatively constant at the setpoint.
  • the actuator in an advantageous embodiment is deliberately driven up at short notice in order to completely relieve possible misplacement. This short-term full opening is time-controlled and favors the Einregeln a constant flushing water flow.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
EP16728658.2A 2015-07-28 2016-06-03 Hydrodynamische schwerstoffabtrennung einer aufschlämmung Active EP3137220B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL16728658T PL3137220T3 (pl) 2015-07-28 2016-06-03 Hydrodynamiczne oddzielanie substancji ciężkich szlamu
HRP20171339TT HRP20171339T1 (hr) 2015-07-28 2017-09-06 Hidrodinamičko uklanjanje teških materijala iz mulja

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015112254.5A DE102015112254A1 (de) 2015-07-28 2015-07-28 Hydrodynamische Schwerstoffabtrennung einer Aufschlämmung
PCT/EP2016/062601 WO2017016718A1 (de) 2015-07-28 2016-06-03 Hydrodynamische schwerstoffabtrennung einer aufschlämmung

Publications (2)

Publication Number Publication Date
EP3137220A1 EP3137220A1 (de) 2017-03-08
EP3137220B1 true EP3137220B1 (de) 2017-08-23

Family

ID=56119475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16728658.2A Active EP3137220B1 (de) 2015-07-28 2016-06-03 Hydrodynamische schwerstoffabtrennung einer aufschlämmung

Country Status (12)

Country Link
US (1) US10173224B2 (zh)
EP (1) EP3137220B1 (zh)
JP (1) JP6767473B2 (zh)
KR (1) KR20180033176A (zh)
CN (1) CN107835717B (zh)
CA (1) CA2986079C (zh)
DE (1) DE102015112254A1 (zh)
DK (1) DK3137220T3 (zh)
ES (1) ES2640014T3 (zh)
HR (1) HRP20171339T1 (zh)
PL (1) PL3137220T3 (zh)
WO (1) WO2017016718A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025806B1 (fr) * 2014-09-15 2019-09-06 Bigarren Bizi Procede de traitement et d'extraction de dechets electroniques en vue de la recuperation des constituants inclus dans de tel dechets
DE102018211197A1 (de) * 2018-07-06 2020-01-09 Thyssenkrupp Ag Automatische Zyklonentleerung
DE102021004122A1 (de) 2021-08-11 2023-02-16 Bta International Gmbh Verfahren und Vorrichtung zur hydrodynamischen Schwerstoffabtrennung mit hohem Wirkungsgrad

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ES2255807B1 (es) 2004-04-16 2008-06-01 Malaquias Molina Mata Sistema combinado de filtracion y recuperacion de fluidos.
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Also Published As

Publication number Publication date
PL3137220T3 (pl) 2018-01-31
DK3137220T3 (en) 2017-10-23
CA2986079A1 (en) 2017-02-02
US20180133721A1 (en) 2018-05-17
CA2986079C (en) 2023-03-07
KR20180033176A (ko) 2018-04-02
HRP20171339T1 (hr) 2017-11-03
DE102015112254A1 (de) 2017-02-02
EP3137220A1 (de) 2017-03-08
CN107835717B (zh) 2020-09-15
JP6767473B2 (ja) 2020-10-14
JP2018526199A (ja) 2018-09-13
ES2640014T3 (es) 2017-10-31
CN107835717A (zh) 2018-03-23
WO2017016718A1 (de) 2017-02-02
US10173224B2 (en) 2019-01-08

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