[go: up one dir, main page]

WO2017125647A1 - Procédé de filtration sous vide - Google Patents

Procédé de filtration sous vide Download PDF

Info

Publication number
WO2017125647A1
WO2017125647A1 PCT/FI2017/050026 FI2017050026W WO2017125647A1 WO 2017125647 A1 WO2017125647 A1 WO 2017125647A1 FI 2017050026 W FI2017050026 W FI 2017050026W WO 2017125647 A1 WO2017125647 A1 WO 2017125647A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter member
cake
ceramic material
filtration
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.)
Ceased
Application number
PCT/FI2017/050026
Other languages
English (en)
Inventor
Bjarne Ekberg
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.)
Outotec Finland Oy
Original Assignee
Outotec Finland Oy
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 Outotec Finland Oy filed Critical Outotec Finland Oy
Publication of WO2017125647A1 publication Critical patent/WO2017125647A1/fr
Priority to ZA2018/04873A priority Critical patent/ZA201804873B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/333—Filters with filtering elements which move during the filtering operation with individual filtering elements moving along a closed path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/52—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D33/54—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/12—Halogens or halogen-containing compounds
    • C02F2101/14—Fluorine or fluorine-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates

Definitions

  • the invention relates to filtration, and more particularly to a method of filtering solid particles from a fluid.
  • Filtration is a widely used process whereby a slurry or solid liquid mixture is forced through a filter member, with the solids retained on the filter member and the liquid phase passing through. This process is generally well understood in the industry. Examples of filtration types include depth filtration, pressure and vacuum filtration, and gravity and centrifugal filtration.
  • the most commonly used filter media for vacuum filters are filter cloths and coated media, e.g. the ceramic filter medium.
  • the use of a cloth filter medium requires heavy duty vacuum pumps, due to vacuum losses through the cloth during cake deliquoring.
  • the ceramic filter medium when wetted, does not allow air to pass through due to a capillary action. This decreases the necessary vacuum level, enables the use of smaller vacuum pumps and, consequently, yields significant energy savings.
  • a method of vacuum filtration comprising guiding a slurry comprising raw water and/or process water to a filter apparatus comprising at least one filter member comprising a ceramic material or a composition comprising a ceramic material and at least one filtrate channel, wherein the slurry is guided to the opposite side of the filter member relative to the filtrate channel; generating suction within the filtrate channel, such that a cake is formed on the opposite side of the filter member; and deliquoring and discharging the cake; and wherein the raw water and/or process water used in the filtration process comprises at least 2 ppm fluorine and the ceramic material of the filter member comprises at least 90 percent of mullite.
  • Figure 1 is a perspective top view illustrating a disc filter apparatus
  • Figure 2 is a side view illustrating the disc filter apparatus shown in
  • Figure 3 is a perspective top view illustrating another filter apparatus
  • Figure 4 illustrates in a side view yet another filter apparatus
  • Figures 5a to 5e illustrate phases of filtration seen on a filter element level
  • Figure 6 illustrates a method of vacuum filtration.
  • Vacuum filtration is, thus, used for separating solid particles and liquids in a slurry or a solid liquid mixture.
  • the cake formation in vacuum filtration is based on generating suction within the filtrate channels.
  • the most commonly used type of a filter member for vacuum filters are filter cloths and coated media, such as a ceramic filter medium.
  • Rotary vacuum disc filter apparatuses are typically used for the filtration of relatively free filtering suspensions on a large scale, such as the dewater- ing of mineral concentrates.
  • the dewatering of mineral concentrates requires large capacity in addition to producing a cake with low moisture content.
  • the vacuum disc filter may comprise a plurality of filter discs arranged in line co- axially around a central pipe or shaft.
  • Each filter disc may be formed of a number of individual filter sectors, called filter plates, that are mounted circumferentially in a radial plane around the central pipe or shaft to form the filter disc, and as the shaft is fitted so as to revolve, each filter plate or sector is, in its turn, displaced into a slurry basin and further, as the shaft of rotation revolves, rises out of the basin.
  • the cake When the filter member is submerged in the slurry basin where, under the influence of the vacuum, the cake forms onto the filter member. Once the filter sector or plate comes out of the basin, the pores are emptied as the cake is deliq- uored for a predetermined time which is essentially limited by the rotation speed of the disc.
  • the cake can be discharged by a back-pulse of air or by scraping, after which the cycle begins again.
  • the ceramic filter member when wetted, does not allow air to pass through which does not allow air to pass through, which further decreases the necessary vacuum level, enables the use of smaller vacuum pumps and, con- sequently, yields significant energy savings.
  • Figure 1 is a perspective top view illustrating a disc filter apparatus
  • Figure 2 is a side view illustrating the disc filter apparatus shown in Figure 1.
  • the disc filter apparatus comprises a filter 15 consisting of several consecutive coaxial filter discs arranged in line coaxially around the central shaft 21 of the filter 15.
  • the filter 15 is supported by bearings on a frame of the filter apparatus and is rotatable about the longitudinal axis of the central shaft 21 such that the lower portion of the filter 15 is submerged in a slurry basin located below the filter 15.
  • the filter is rotated by e.g. an electric motor.
  • the number of the filter discs may range from 2 to 20, for example.
  • the filter apparatus shown in Figure 1 comprises twelve (12) filter discs.
  • the outer diameter of the filter 15 may be ranging from 1.5 m to 4 m, for example.
  • Examples of commercially available disc filters include Ceramec CC filters, models CC-6, CC-15, CC-30, CC-45, CC-60, CC-96 and CC-144 manufactured by Outotec Inc.
  • All the filter discs can be preferably essentially similar in structure.
  • Each filter disc may be formed of a number of individual sector-shaped filter elements 1.
  • the filter elements 1 are mounted circumferentially in a radial planar plane around the central shaft 21 to form an essentially continuous and planar disc surface.
  • the number of the filter plates in one filter disc may be 12 or 15, for example.
  • each filter element 1 is, in its turn, displaced into a slurry basin and further, as the central shaft 21 revolves, rises out of the basin.
  • the cake forms onto the filter member 3 under the influence of the vacuum.
  • pores of the filter member 3 are emptied as the cake is deliquored for a predetermined time which is essentially limited by the rotation speed of the disc.
  • the cake can be discharged by e.g. scraping, after which the cycle begins again.
  • Operation of the disc filter apparatus may be controlled by a filter control unit, such as a Programmable Logic Controller, PLC.
  • a filter control unit such as a Programmable Logic Controller, PLC.
  • Figure 3 is a perspective top view illustrating another filter apparatus
  • the filter apparatus 2 shown here is a drum filter apparatus comprising a drum-like filter 15. It is to be noted that the filter apparatus 2 is shown by dash lines in Figure 3 in order to clarify the structure of the filter 15.
  • the filter element 1 is a part of outer sur- face of the filter 15.
  • the diameter of the filter 15 may be e.g. in range of 1.8 m - 4.8 m and length in axial direction 1 m - 10 m.
  • the surface area of the filter 15 may be e.g. in range of 2 - 200 m2.
  • drum filters examples include CDF-6/1.8 manufactured by Outotec Inc.
  • FIG. 4 illustrates in a side view yet another filter apparatus 2.
  • the filter apparatus 2 here is a vacuum belt filter apparatus.
  • the filter 15 of the vacuum belt filter apparatus comprises an end-less belt comprising a multitude of individual filter elements 1 arranged one after another in the longitudinal direction of the belt.
  • the filter elements 1 follow one after another along the whole length of the belt, but for sake of simplicity, all vacuum boxes have not been illustrated.
  • the filter element 1 comprises a vacuum box into which vacuum or underpressure is applied.
  • the filter element 1 is submerged in the slurry basin and the cake forms onto the filter member 3 by the influence of the underpressure in the vacuum box.
  • the cake can be discharged by e.g. scraping, after which the cycle begins again.
  • the filter element 1 such as the filter plate
  • the filter element 1 is affected by slurry particles and extraneous compounds, especially in the field of dewatering of mineral concentrates, and as the replacement of a plate can be expensive, the regeneration of the filter member becomes a critical factor when the time-in-operation of an individual filter plate needs to be increased.
  • the filter member is periodically regenerated with the use of one or more of three different methods, for example: backwashing, ultrasonic cleaning, and acid washing. Whereas the regenerative effect of backwashing and ultrasound are more or less mechanical, regeneration with acids is based on chemistry.
  • the ceramic filter plate is mechanically and chemically more durable than, for example, filter cloths and can, thus, withstand harsh operating conditions and possible regeneration better than other types of filter members. These attributes allow for chemical regeneration of the filter plates with acids, whereas a cloth would have to be discarded, after being blinded by particles, and replaced several times during a year's operation.
  • Acid washing may especially problematic from regeneration point of view in filtering environments comprising fluorine, for instance in the raw water or process water.
  • the fluorine reacts with the acids forming compounds such as hydrofluoric acid that may accelerate the wear of the filter plates considerably.
  • breakage of one plate causes domino effect as the pieces of the broken plate may break neighbouring filter plates and so on, which may lead to a massive amount of broken filter plates and the filter apparatus may be out of operation for many days. In the worst case this might cost hundreds of thousands of dollars for the user due to cost of the filter plates and the shutdown time of the process.
  • FIGs 5a to 5e illustrate phases of filtration seen on a filter element 1 level.
  • Each filter element 1 moves in its turn into and through a basin 4.
  • each filter element 1 goes through four different process phases during one rotation of the filter 15.
  • the liquid is passing through the element 1 when it travels through the slurry and into a filtrate channel 7, and a cake 5 is formed on the outer surface of the filter member 3, as illustrated in Figure 5a.
  • each filter element 1 in Figures 5a to 5e comprises a structure comprising filter members on two opposite sides of the filter element 1, in some embodiments the filter element 1 may only comprise a filter member 3 on one side.
  • the filter element 1 enters the cake drying phase illustrated in Figure 5b after it leaves the basin 4. If cake washing is required, it is typically done in the beginning of the drying phase.
  • the cake discharge phase illustrated in Figure 5c the cake 5 is scraped off by scrapers 6.
  • a thin cake 5 may be left on the filter ele- ments 1 due to a gap between the scraper 6 and the surface of the filter member 3.
  • water (filtrate) is pumped in a reverse direction through the filter element 1, as illustrated in Figure 5d.
  • the backwash water washes off the residual cake and cleans the pores of the filter plate. Proper backwash is important for the filter operation.
  • Backwash pressure may range from about 0.9 bar up to 2.5 bar, for example, depending on the application and the size of the filter discs and so on.
  • the filter element 1 is also periodically regenerated with the use of at least one of the following methods: backwashing, ultrasonic cleaning, and acid washing.
  • a com- bined wash using both acid washing and ultrasonic cleaning is the most effective.
  • the regeneration may be performed 1 to 3 times per day, for example.
  • Figure 6 illustrates a method of vacuum filtration.
  • the method may comprise guiding 100 a slurry comprising raw water and/or process water to a filter apparatus 2 comprising at least one filter member 3 comprising a ceramic material or a composition comprising a ceramic material and at least one filtrate channel 7, wherein the slurry is guided to the opposite side of the filter member 3 relative to the filtrate channel 7.
  • the method may further comprise generating 110 suction within the filtrate channel 7, such that a cake is formed on the opposite side of the filter member 3, and deliquoring and discharging 120 the cake.
  • the raw water and/or process water used in the filtration process may comprise at least 2 ppm fluorine.
  • the ceramic material of the filter member comprises at least 90 percent of mullite.
  • such a method of vacuum filtration may be used in an environment comprising raw water and/or process water used in the filtration process and comprising at least 2 ppm of fluorine, and the ceramic material of the filter member 3 may comprise at least 90 percent of mullite.
  • the ceramic material of the filter member 3 comprises at least 95 percent of mullite.
  • the raw water and/or process water may comprise 2 to 50 ppm of fluorine. According to a further embodiment, the raw water and/or process water may comprise 5 to 50 ppm of fluorine.
  • the use of a filter element 1 with a filter member 3 comprising a high percentage of mullite is particularly beneficial in such processes where the high amount of fluorine often causes considerable degradation of the filter elements 1 comprising conventional materials.
  • the method may further comprise acid washing the filter member 3.
  • at least one of the following acids is used in the acid washing: nitric acid, oxalic acid and sulphuric acid.
  • the pH of the acid washing medium may be less than or equal to 2. Acid washing may be particularly beneficial in connection with use of filter members 3 that are otherwise challenging to clean to a sufficient degree, such as in connection with microporous filter members 3 like filter members 3 forming a capillary filter, as the acid washing ensures a sufficient grade of degeneration of the filter element 1.
  • the method is used for filtration of at least one of the following: ferrochrome, iron ore or phosphate.
  • filter elements 1, wherein the ceramic material of the filter member 3 comprises at least 90 percent of mullite may be particularly beneficial in such methods as fluorine is often present in filtration of ferrochrome, iron ore and phosphate.
  • other factors like the geographical factors, such as the geographical area where the filtration takes place, may also affect the presence of fluorine in raw water and/or process water.
  • the filter member 3 may form a capillary filter.
  • a capillary filter refers to a filter, wherein the structure and/or the material of the filter, such as the filter member 3, enables a certain amount of liquid, such as water, to be kept in the filter by a capillary action.
  • the liquid may be kept in micro-pores provided in the filter member 3, for example.
  • Such a capillary filter enables the liquid to be filtered to easily flow through the filter member 3, but when all free liquid has passed through the filter member 3, the remaining liquid kept in the filter by the capillary action prevents flow of gas, such as air, through the wet filter member 3.
  • the capillary action thus does not participate in the de- watering itself, for instance by sucking water out of the slurry.
  • a capillary filter liquid usually water
  • water may be kept in the micro-pores of the filter member 3 by capillary forces and no flow of gas takes place after the free water in the residue, such as the cake, has been removed.
  • the filter member 3 formed as a capillary filter prevents air from entering the internal cavity. Acid washing may be particularly beneficial in connection with use of filter members 3 forming a capillary filter, as the acid washing ensures a sufficient grade of degeneration of the filter element 1.
  • the bubble point of the filter member 3 is at least 0.2 bar.
  • the bubble point refers to an effective bubble point.
  • the effective bubble point describes a pressure difference between a first filter surface 9a of the filter member 3 directed towards the filtrate channel 7 and the second filter surface 9b of the filter member 3 opposite to the first filter surface 9a and directed towards the cake 5, at which 1 liter of air flows through one square meter of the second filter surface 9b during a one minute time.
  • At least 600 liter of water per an hour and per one square meter of the second filter surface 9b may be able to pass through the filter member 3 when a pressure difference of 1 bar is provided between the first filter surface 9a and the second filter surface 9b.
  • a sufficient amount of water may flow through the filter member 3 to provide efficient filtering of the slurry, especially when the actual filtering takes place.
  • an underpressure is provided within the filter element 1, such as within the filtrate channel 7, which means that the pressure inside the filter element 1 is lower than the pressure outside the filter element 1.
  • the pressure difference between the inside of the filter element 1 and the outside of the filter element 1 may be greater during the actual filtering than during the drying of the cake.
  • the drying of the cake may take place for instance in a disc filter apparatus 2 when the filter element 1 in question has passed the filtering position, such as the lowest position in the filter 15 and rotated back up- wards.
  • a specific filter element 1 participates in the actual filtering at a different point of time and at a different position in the filter apparatus 2 than in the drying of the cake.
  • the relevant pressure difference for the actual filtering and the drying of the cake may be different from one another.
  • the filter apparatus 2 comprises a disc filter apparatus, a belt filter apparatus or a drum filter apparatus.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un procédé de filtration sous vide consistant à guider (100) une boue comprenant de l'eau brute et/ou de l'eau de traitement vers un appareil de filtre (2) comprenant au moins un élément de filtre (3) comprenant un matériau céramique ou une composition comprenant un matériau céramique et au moins un canal de filtrat (7), la boue étant guidée vers le côté opposé de l'élément de filtre par rapport au canal de filtrat ; générer (110) une aspiration dans le canal de filtrat, de telle sorte qu'un gâteau (5) est formé sur le côté opposé de l'élément de filtre ; et dégraisser et évacuer (120) le gâteau. L'eau brute et/ou l'eau de traitement utilisée dans le procédé de filtration comprend au moins 2 ppm de fluor, et le matériau céramique de l'élément de filtre (3) comprend au moins 90 pourcent de mullite.
PCT/FI2017/050026 2016-01-20 2017-01-19 Procédé de filtration sous vide Ceased WO2017125647A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2018/04873A ZA201804873B (en) 2016-01-20 2018-07-19 Vacuum filtration method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20165033 2016-01-20
FI20165033 2016-01-20

Publications (1)

Publication Number Publication Date
WO2017125647A1 true WO2017125647A1 (fr) 2017-07-27

Family

ID=58016728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2017/050026 Ceased WO2017125647A1 (fr) 2016-01-20 2017-01-19 Procédé de filtration sous vide

Country Status (2)

Country Link
WO (1) WO2017125647A1 (fr)
ZA (1) ZA201804873B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107596765A (zh) * 2017-11-15 2018-01-19 中冶北方（大连）工程技术有限公司 一种分层真空盘式过滤机及过滤方法
CN107617254A (zh) * 2017-11-15 2018-01-23 中冶北方（大连）工程技术有限公司 一种预先分级盘式过滤机及过滤方法
CN112156547A (zh) * 2020-09-17 2021-01-01 殷国辉 一种用于生物柴油生产的出渣装置及其使用方法
CN116747591A (zh) * 2023-08-22 2023-09-15 山西林海腐植酸科技有限公司 一种腐植酸生产过滤装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06134267A (ja) * 1992-10-28 1994-05-17 Noritake Co Ltd 板状セラミックフィルター
WO2014170533A1 (fr) * 2013-04-17 2014-10-23 Outotec (Finland) Oy Appareil de filtre à disques et procédé de commande d'un filtre à disque
WO2014191634A1 (fr) * 2013-05-31 2014-12-04 Outotec (Finland) Oy Élément de filtration et son procédé de fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06134267A (ja) * 1992-10-28 1994-05-17 Noritake Co Ltd 板状セラミックフィルター
WO2014170533A1 (fr) * 2013-04-17 2014-10-23 Outotec (Finland) Oy Appareil de filtre à disques et procédé de commande d'un filtre à disque
WO2014191634A1 (fr) * 2013-05-31 2014-12-04 Outotec (Finland) Oy Élément de filtration et son procédé de fabrication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107596765A (zh) * 2017-11-15 2018-01-19 中冶北方（大连）工程技术有限公司 一种分层真空盘式过滤机及过滤方法
CN107617254A (zh) * 2017-11-15 2018-01-23 中冶北方（大连）工程技术有限公司 一种预先分级盘式过滤机及过滤方法
CN107617254B (zh) * 2017-11-15 2022-11-29 中冶北方（大连）工程技术有限公司 一种预先分级盘式过滤机及过滤方法
CN107596765B (zh) * 2017-11-15 2022-11-29 中冶北方（大连）工程技术有限公司 一种分层真空盘式过滤机及过滤方法
CN112156547A (zh) * 2020-09-17 2021-01-01 殷国辉 一种用于生物柴油生产的出渣装置及其使用方法
CN116747591A (zh) * 2023-08-22 2023-09-15 山西林海腐植酸科技有限公司 一种腐植酸生产过滤装置
CN116747591B (zh) * 2023-08-22 2023-10-24 山西林海腐植酸科技有限公司 一种腐植酸生产过滤装置

Also Published As

Publication number Publication date
ZA201804873B (en) 2019-05-29

Similar Documents

Publication Publication Date Title
JP6450056B1 (ja) 濾過装置の運転方法
CA2908842C (fr) Appareil de filtre a disques et procede de commande d'un filtre a disque
US20160121245A1 (en) Filter element and method for manufacturing the filter element
WO2017125647A1 (fr) Procédé de filtration sous vide
RU2534769C2 (ru) Сепаратор для жидкой и твердой фаз
AU2014270290B2 (en) Ceramic filter element and method for manufacturing a ceramic filter element
CN105307747B (zh) 过滤元件以及用于制造过滤元件的方法
CN108144353A (zh) 一种石材污水过滤处理方法
JP5507908B2 (ja) 回転濾板式濾過機
JP2013059702A (ja) 濾過装置
EP0230928B1 (fr) Procédé et appareil de régénération d'une membrane dynamique dans une installation de séparation de liquides
JPS61222515A (ja) 濾過濃縮装置
KR101226048B1 (ko) 여과포가 부착된 규조토 드럼을 이용한 여과장치
WO2017077188A1 (fr) Élément de filtre pour appareil de filtre à disques
RU2425710C1 (ru) Установка для получения отфильтрованного осадка из суспензии
CN222900481U (zh) 一种浆料过滤清洗一体机
CN201620097U (zh) 污泥处理中的浓缩装置
KR100474362B1 (ko) 고액 분리장치
JPH0128806Y2 (fr)
CN103285650A (zh) 一种回转过滤设备
SU1043882A1 (ru) Центрифуга
JPH08215519A (ja) 固液分離方法及びその装置
JPH04134426U (ja) 加圧デイスクフイルタ装置
SU1389815A1 (ru) Фильтр дл очистки жидкостей
SU1351629A1 (ru) Устройство дл очистки жидкости

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17704518

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17704518

Country of ref document: EP

Kind code of ref document: A1