EP2539423A1 - Dispositif de filtration huile/eau - Google Patents

Dispositif de filtration huile/eau

Info

Publication number
EP2539423A1
EP2539423A1 EP11704802A EP11704802A EP2539423A1 EP 2539423 A1 EP2539423 A1 EP 2539423A1 EP 11704802 A EP11704802 A EP 11704802A EP 11704802 A EP11704802 A EP 11704802A EP 2539423 A1 EP2539423 A1 EP 2539423A1
Authority
EP
European Patent Office
Prior art keywords
oil
water separator
water
filter
separator
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Withdrawn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
EP11704802A
Other languages
German (de)
English (en)
Inventor
Holger Weitze
Johannes Sinstedten
Herbert Schlensker
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.)
Beko Technologies GmbH
Original Assignee
Beko Technologies 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 Beko Technologies GmbH filed Critical Beko Technologies GmbH
Publication of EP2539423A1 publication Critical patent/EP2539423A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16—Filtration; Moisture separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives

Definitions

  • the invention relates to an oil / water separator.
  • Oil / water separators are often used in conjunction with air compressors.
  • Compressed air compressors generate compressed air by sucking in and compressing ambient air.
  • the humidity contained condensate as a result of physical reasons and by drying the compressed air.
  • This condensate is a wastewater, which may not be discharged into the public sewer mainly because of the entry of lubricants of the air compressor because it exceeds the limits of hydrocarbon concentration.
  • the bond between water and lubricant is different, ranging from mixture of oil and water over dispersion to emulsion. Permissible values for the discharge into the waste water channel are 20 or 10, in some cases 5 ppm (parts per million).
  • the result is a hazardous waste to be disposed of hazardous waste, although it is about 99.5% of water from the humidity of the ambient air.
  • the task of commercially available oil / water separation devices is to treat the condensate on site in a conductive manner, that is to remove the oil components from the water at low cost.
  • Known apparatuses of this type usually operate with several separation stages in order to achieve the desired purity.
  • the condensate is introduced via a pressure relief element slowly and thus low turbulence in a pre-separator.
  • fine oil droplets are separated from the condensate by adsorption filters, mostly based on oleophilic material and activated carbon with a very large internal surface area.
  • the condensate is led together with the free Olan fixing through the adsorption, which in turn floats on the condensate surface and here settling oil components (density greater lkg / dm 3 ) absorbs.
  • the construction works according to the principle of the corresponding water columns; as new condensate enters, recycled condensate leaves the apparatus at the clean water outlet to the sewer.
  • the collected free oils as well as the oil-saturated filters are usually sent for thermal recycling, but can also be treated.
  • the bacteria, fungi or algae produce due to the operational residence time in the oil / water separators a slime that partially settles on the water surface, but also drops and sediments or remains in suspension. When it flows through the filtration stages, it can settle on the surface and then leads here to a blockage, due to the due to operational reasons, low condensate flow no longer permitted. The apparatus then overflows and thus the service life of the filter is unacceptably reduced, for example from at least 6 months to 6 weeks.
  • the oil / water separator should be simple and inexpensive to produce.
  • an oil / water separation device which is characterized by an additional mechanical separation device for a separation of slime-like substances from an oil / water mixture.
  • oil / water mixture is used for the liquid passed through the separator, regardless of the proportion of the oil or oil components in the liquid.
  • the term thus also refers to the liquid in the direction of flow after the filter elements.
  • the invention is based on the finding that an initially obvious and also advantageous bactericidal treatment of the condensate is disadvantageous for several reasons.
  • it is difficult to define a suitable means because conditions of each application differ from each other.
  • a 100% elimination is difficult; due to the subsequent residence times in the oil / water separators residues of bacteria, fungi or algae will grow again in problematic orders of magnitude.
  • Such methods also usually require a more complex system technology z. As for backwashing, which then in no relation to the simplicity of commercial oil / water separators.
  • the essential basic idea of the invention is therefore not to prevent the formation of slime-like substances, but rather to design the oil / water separation device in such a way that it is able to compensate for the formation or an increased accumulation of slime-like substances or withstand this, without the operating time is significantly limited.
  • This solution contradicts the usual prejudice that a mechanical separation of such substances is hardly possible or only with increased effort.
  • the separation device for the separation of the slime-like substances from the oil / water mixture can be formed according to the invention by different systems.
  • the advantage of an upstream, that is arranged outside the housing of a main filter element is that it can be cleaned and changed independently of the separator or the main container.
  • the filtration or separation of the mucus serves to keep the main filter, which separates the oil from the oil / water mixture, or to slow down its blocking. For this reason, the deposition of the slime always takes place before the separation of the oil or oil-containing components from the oil / water mixture.
  • the use of a sucking or pushing pump as a flow regulator in connection with a slime filter has the great advantage that blocking of the filter elements is hardly possible or significantly slowed down.
  • the aim is in any case, always maintain the given for the usual oil / water separator flow of oil / water mixture, which is why the pump is understood as a flow regulator.
  • This is particularly advantageous if regular maintenance intervals are planned and a change of the filter elements between the planned maintenance appointments should be avoided.
  • the pump can be level regulated or time controlled. Under level control is understood that the pump then turns on when a corresponding amount is reached within the separator. Alternatively, and especially with a regular inflow into the separator, the pump can be switched on after certain time intervals. It is also conceivable a combination of the two possibilities.
  • Another significant advantage of using the pump is that the pump can pump in the reverse direction and thus the separator can be cleaned by backwashing.
  • a filter material is particularly suitable a nonwoven fabric, since this has only a very low flow resistance at a large surface area.
  • aeration means that a gas is supplied which moves or entrains sediments counter to the flow direction of the oil / water mixture. This avoids that the main filter, which is to remove the oil-containing components from the oil / water mixture, added with sediment, at least blocking the main filter is slowed down.
  • special sediment dreams can be provided, in which sediment can settle.
  • a combination of fiber fleece, ventilation and sediment space is also possible.
  • 1 shows a first variant of an inventive oil / water separator with upstream filter element
  • 2 shows a second variant of an inventive oil / W separation device based on depth filtration
  • FIG. 3 shows a third variant of an inventive oil / water separation device based on depth filtration with suction
  • FIG. 5 shows a fifth variant of an inventive oil / water separator with ventilation and sediment
  • FIG. 6 shows a sixth variant of an oil / water separation device according to the invention with sediment separator and fiber fleece
  • FIG. 10 shows a ninth variant of an inventive oil / water separation device with integrated filter element and multi-stage main filter.
  • the following figures show different variants of an inventive oil / water separator 20.
  • This has a housing 23.
  • a filter element 22 is provided in the inlet of a commercially available oil / water separation device 20 or its housing 21, the slime-like substances from an oil / water Mixture removed. It has been found that such a filter element 22 may preferably be formed from an aluminum foam coated with nano-silver, but may in principle be formed from or at least include any material having germicidal properties.
  • the filter element 22 may consist of a housing in which D45 disks are stacked and having a volume of 0.2 to 0.5 liters. The supply of the mixture is carried out under pressure and at an increased speed, whereby the filter element 22 remains free due to the short residence time of the mixture within the filter element 22 over a long period of time and does not become clogged.
  • FIG. 2 shows a further variant according to the invention, in which the filtration takes place within the oil / water separation device 20.
  • the liquid takes the flow path 41.
  • the oil / water mixture is passed through a lid 24 in a pre-filter 26 through a central screen tube 21.
  • the cover 24 also serves as a hold-down for the internal pre-filter 26.
  • a filter fleece material is preferably provided, which is formed as a web and at least largely retains the slime.
  • the filter fleece is exchangeable and can preferably be reused after cleaning.
  • An essential advantage of such a filter fleece is also that it has only a low flow resistance.
  • This embodiment variant can additionally also have the filter element 22 shown in FIG.
  • the prepurified liquid exits through prefilter openings 31 and enters a main filter 30 separated from the prefilter 26 by one or more spacers 28.
  • the spacer or spacers 28 inter alia cause the prepurified liquid to enter the main filter 30 prior to entry collect and calm down.
  • the oil separation is then carried out in the subsequent main filter 30 via a riser 33, the purified liquid from the oil / water separator 20 is led out.
  • FIG. 3 shows a variant embodiment in which the oil / water separation device 20 according to the invention for separating slime-like substances from the oil / water mixture is formed by a pump 36 in combination with a level detection device 32.
  • the pump 36 is connected via a corresponding line 34 via a connection in the flow direction behind the main filter 30 to the Oil / water separator 20 connected.
  • the level detector 32 is provided in order to prevent the liquid level within the oil / water separator 20 from falling below the prefilter 26, the level detector 32 is provided. Once the level within the oil / water separator 20 becomes too low, the pump 36 shuts off.
  • the pump power corresponds to about one to two times the rated power of the oil / water separator 20.
  • two level limits A, B are shown.
  • the level detection device 32 may nevertheless be present as a back-up system, but in a simple variant, the level detection device 32 can be completely dispensed with.
  • a significant advantage of the use of the pump 36 is that it can be adapted in its performance to various conditions on site or contamination of the liquid.
  • By using the pump 36 it is easily possible to overcome the flow resistance resulting from the filter or filters 26, 30. Because of this mode of action, the same amount of oil / water mixture is treated per unit of time as a simple oil / water separator of identical power. Thus, the loading, design and operation of the apparatus remains the same, so the pump works only as a flow regulator when impaired by mucilaginous substances.
  • a pushing pump 36 may also be used, which is then arranged upstream of the filters 26, 30 in the flow direction.
  • the separating device for the mucilaginous substances is formed by a ventilating element 42. det. Via a ventilation line 40, a gas, for example compressed air, led to the venting element 42 and exits there.
  • the ventilation element 42 is arranged within a filter cup 52, which is located in the region of the main filter 30 below a separating bottom 45.
  • the introduced gas exits the venting element 42 and flows upwards through the filter container 52 and the separating bottom 45, entraining slime-like substances and keeping them away from the main filter (30).
  • the entrainment or swirling of the slime-like substances against the flow direction of the oil / water mixture prevents clogging of flow openings of the main filter 30 and the main filter 30 itself.
  • a gas stream 43 is shown as an arrow.
  • the supply of the gas is also possible via a perforated hose.
  • the shape of the venting element 42 may be adapted to the particular design of the oil / water separator 20.
  • the oil / water mixture passes through the main filter inlet 38 in the main filter 30, the purified liquid then leaves the oil / water separator 20 via the riser 33rd
  • FIG. 5 shows a fifth variant of an inventive oil / water separation device 20 with the afore-described aeration, but with an additional sediment separation element 44.
  • the sediment separation element 44 ensures that if the buoyancy force of the ventilation is insufficient, the slime-like material remains in the sediment space 45 and does not rise the main filter inlet 38 lowers, so that the main filter inlet 38 is kept free even over long periods of operation.
  • the basic structure corresponds approximately to the structure of the device according to Figure 4, it is only additionally a Sedimentabscheideelement 44 used. This is formed by a tube 47 which is closed by a screen 49. Through the screen 49 through the gas is supplied via the vent line 40 and exits down through the pipe and through pipe openings 46 again.
  • FIGS. 6 to 8 show oil / water separation devices 20 which have a sediment separation element 44 and additionally a fiber fleece 50. The oil / water mixture is passed through the fibrous web 50 into the main filter 30. The fiber fleece binds the mucus.
  • a sediment space 45 is provided in addition to the non-woven fabric 50, in which material can settle. It is expressly pointed out that these variants can also be combined with the flow regulator shown in FIG. 3, that is, the pump 36.
  • the afore-described ventilation is furthermore provided. Again, the gas flow through the tube openings 46 and screen openings 48 exits.
  • the nonwoven fabric 50 conforms to a vertical wall 54 according to the embodiment variants of FIGS. Also in this embodiment, a sediment space 45 is provided.
  • FIG. 9 shows a further embodiment variant of an oil / water separation device 20 according to the invention, in which the outflow of the filtered oil / water mixture takes place at the lowest possible point of the oil / water separation device 20 and thus a higher pressure level within the oil / water Separating device 20 is produced with blocking main filter 30. As a result, the mixture to be separated is forced through the mucilaginous substances.
  • the main filter 30 in all the embodiments described above can also be constructed in multiple stages, a preferred embodiment, Fig. 10. This is particularly useful when emulsions must be separated, which occur in the worst case over time even in different amounts.
  • the main filter 30 can have, for example, a second filter stage 55 made of alkenem or oleofinem oil-adsorbing material. For example, attapulgite or Fuller's earth is suitable; these substances filter even the finest emulsified oil components.
  • the two filter stages can be realized separately from each other, but they can also be combined with each other in a filter stage. In the latter variant, the two filtration processes take place within a filter stage. If two filter stages are realized, they can be directly adjacent to each other However, they may also be in contact with each other, for example, by a sieve-like layer. Such a sieve can consist of all suitable materials. In a particularly advantageous embodiment, the various filter stages can also be changed independently, which is also facilitated by an intermediate sieve.
  • the multi-stage structure of the main filter 30 is particularly suitable for use with a sucking or pushing pump, as this still pulls or pushes the oil / water mixture through the main filter when it is blocked on its outside, for example by bacteria.
  • the invention is not limited to the embodiments shown, but in particular also includes combinations of the various possibilities for the separation and separation of the mucilaginous substances.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Physical Water Treatments (AREA)
  • Removal Of Floating Material (AREA)
  • Treatment Of Sludge (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un dispositif de séparation huile/eau (20) muni d'un filtre principal (30) destiné à éliminer les constituants huileux d'un mélange huile/eau. Ce dispositif est caractérisé par un dispositif de séparation mécanique supplémentaire permettant de séparer des substances visqueuses du mélange huile/eau.
EP11704802A 2010-02-26 2011-02-25 Dispositif de filtration huile/eau Withdrawn EP2539423A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002431 2010-02-26
PCT/EP2011/052857 WO2011104368A1 (fr) 2010-02-26 2011-02-25 Dispositif de filtration huile/eau

Publications (1)

Publication Number Publication Date
EP2539423A1 true EP2539423A1 (fr) 2013-01-02

Family

ID=44148837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11704802A Withdrawn EP2539423A1 (fr) 2010-02-26 2011-02-25 Dispositif de filtration huile/eau

Country Status (6)

Country Link
US (1) US20130126405A1 (fr)
EP (1) EP2539423A1 (fr)
JP (1) JP5784046B2 (fr)
KR (1) KR101510933B1 (fr)
CN (1) CN102770518B (fr)
WO (1) WO2011104368A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021220068A1 (fr) 2020-04-27 2021-11-04 Atlas Copco Airpower, Naamloze Vennootschap Dispositif de filtrage et procédé d'assemblage et de démontage d'un tel dispositif de filtrage
BE1028246A1 (nl) 2020-04-27 2021-11-26 Atlas Copco Airpower Nv Filterinrichting en werkwijze voor het monteren en demonteren van een dergelijke filterinrichting

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KR101729236B1 (ko) 2015-06-01 2017-04-21 (주)노터스생명과학 Tlr7 항진제를 포함하는 비만 또는 간질환 예방 및 치료용 약학 조성물
DE102015112092B4 (de) 2015-07-24 2022-03-10 Beko Technologies Gmbh Öl/Wasser-Trennvorrichtung mit Druckluftbeaufschlagung
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KR20160141683A (ko) 2016-09-21 2016-12-09 (주)노터스생명과학 Tlr7 항진제를 포함하는 비만 또는 간질환 예방 및 치료용 약학 조성물
KR20170010887A (ko) 2017-01-20 2017-02-01 (주)노터스생명과학 Tlr7 항진제를 포함하는 비만 또는 간질환 예방 및 치료용 약학 조성물
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021220068A1 (fr) 2020-04-27 2021-11-04 Atlas Copco Airpower, Naamloze Vennootschap Dispositif de filtrage et procédé d'assemblage et de démontage d'un tel dispositif de filtrage
BE1028246A1 (nl) 2020-04-27 2021-11-26 Atlas Copco Airpower Nv Filterinrichting en werkwijze voor het monteren en demonteren van een dergelijke filterinrichting

Also Published As

Publication number Publication date
JP5784046B2 (ja) 2015-09-24
WO2011104368A1 (fr) 2011-09-01
JP2013520306A (ja) 2013-06-06
KR20130004315A (ko) 2013-01-09
US20130126405A1 (en) 2013-05-23
CN102770518A (zh) 2012-11-07
KR101510933B1 (ko) 2015-04-10
CN102770518B (zh) 2014-12-03

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