• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method and apparatus for dehydrating suspensions by means of a vacuum filter and consisting of applying the suspension to the surface of the vacuum filter, directing steam along the path parallel to the surface and thereafter passing the steam into contact with the filter cake on the surface.
    公开号:SU730279A3
    申请号:SU762431204
    申请日:1976-12-23
    公开日:1980-04-25
    发明作者:Отте Вильгельм；Бергманн Гюнтер；Кубица Карл-Хайнц
    申请人:Клекнер-Хумбольдт-Дойтц Аг (Фирма)；Бергверксфербанд Гмбх (Фирма)；
    IPC主号:
    专利说明:

    nor located above the sediment removal zone.
    Preferably, the end walls of the steam collectors are provided with elastic seals.
    FIG. 1 shows a drum vacuum filter, a plan view; in fig. 2 - the same general view; Fig.3Disk vacuum filter, general view; in fig. 4 shows section A-A in FIG. 3; in fig. 5 shows a flat vacuum filter, general view; in fig. 6 dan section bb in fig. five.
    The vacuum filter (see Figs. 1 and 2) contains a drum 1 mounted rotatably around axis 2 and immersed in a trough 3 filled with the initial suspension. The drum 1 is equipped with a filter cloth 4. The drum is divided into zones 5-9, respectively, suction, drying, measuring zone for removing sediment and blowing filter cloth. The suction zone 5 is separated from the drying zone b and attached to the receiver 10 of the reduced pressure. The measuring zone 7 and the drying zone 6 have receivers 11 and 12 of reduced pressure, respectively. The reduced pressure receivers are connected to a vacuum pump (not shown in the drawings). The drum 1 is covered on top with a steam collector 13, which runs, partially overlapping the zone 5 of the rsasgeani, to the end of the zone 6 of the osushi. The steam collector is divided by a heat-conducting partition 14 into two chambers 15 and 16 arranged one above the other. The bottom chamber 16 is in direct contact with the drum surface, and the top kg 1 of measure 15 has a steam supply pipe 17 in the final area of the drying zone, connected to a generator 18.
    The partition 14 is made not reaching the end wall of the steam collector remote from the steam supply pipe 17 and forms an opening 19 between the chambers 15 and 16. The upper chamber 15 of the steam collector 13 is provided with an insulating layer 20 on the outer wall. Measuring zone 7 is equipped with a collector 21 with a fitting 22 to which the high-pressure pipe from generator 23 is connected. The collector 21 is in direct contact with the surface of the drum 1. A device 25 for measuring the amount of air sucked is located above the filter control head 24 emogo of collector 21 and from line connecting the control head 24 .and 11 ressiver reduced pressure measuring zone 7.
    The measuring device 25 is connected via a regulator 26 with a setpoint setting with a controllable regulator (valve) 27 installed in the pipeline 28 of the reduced pressure.
    The end walls of the steam collectors 13 and 21 are provided with elastic seals 29 and 30, adjacent to the rotating edges 31 of the drum 1 and to the surface of the residual fat formed on the drum, respectively.
    An exhaust device 32 with exhaust fan 33 is designed to remove the evolved gases. A device 34 is provided for removing the drum from the drum.
    Drum vacuum filter works as follows.
    The initial suspension is fed into the trough 3 and the drum 1 is rotated. During the rotation of the drum 1 through the suction zone 5, solids contained in the suspension are deposited on the surface of the drum as a layer of a certain thickness, and the filtrate is removed through an axis 2 created by the receiver 10 reduced pressure.
    . With the subsequent rotation of the drum, the sediment formed on its surface turns into a filtration
    5 and as it passes through the drying zone 6, the water from the round capillaries is drawn off. Superheated steam from generator 18 enters through pipe 17 into the upper chamber 15, flows along it in the longitudinal direction, passes through the opening 19 between the chambers and further into the lower chamber 16 in countercurrent along the entire length. In this case, the heat conductive separation switch C of town 14, heated by superheated steam supplied to the upper chamber 15, transfers its heat to the steam flowing through the lower chamber 16 so that the latter heats up directly and has the same temperature.
    0 the entire length of the camera.
    Under the influence of the heat given off by the steam, the sediment formed on the drum heats up and the water released during the heating is sucked off.
    5 Receiver 12 reduced pressure.
    In the zone 6 of the sludge drying, it is exposed to hot air supplied to the collector 21 from the generator 23 and sucked through it. The parameter 0 of the sludge drying drip is controlled by the regulator 26 and the control valve 27.
    The soot and excess hot air from the steam trap 21 is sucked off by an exhaust device 32.
     Having passed the measuring zone 7 and the blowing zone 8, the sediment is removed from the drum by the device 34.
    The slurry dewatering process can be carried out in a similar manner on a vacuum disk filter or a flat vacuum filter.
    On the shaft 35 (see Figs. 3 and 4) are placed the disc filter segments 36 above which the heating jacket 37 with thermal insulation and the steam inlet pipe 38 are mounted. Inside the casing 37 there is a dividing wall 39, which does not reach the level of the suspension and forms a channel for the passage of steam into the lower chamber 40. A steam injection pipe 38 is installed in the upper chamber 41.
    FIG. 5 and 6 shows a flat vacuum filter. A loading device 42 is provided for feeding the initial slurry filter, 43 for chopping steam, and a discharge screw 44 for unloading sediment.
    The steam heating jacket 45 is placed only over a part of the surface of the flat filter and does not cover the surface above the loading device 42 and in front of the discharge screw 44. Inside the steam heating housing there is a dividing wall 46 parallel to the slump deposited on the surface of the filter 47.
    权利要求:
    Claims (4)
    [1]
    1. A method of dewatering suspensions consisting in filtering; it is under vacuum and steam is exposed to the precipitate formed, characterized in that, in order to increase the efficiency of dewatering, the steam is divided into two streams, with one of the streams heating the second steam stream that acts on the sediment and countercurrently to the first.
    [2]
    2. A vacuum filter for carrying out the slurry dewatering process
    Item 1, including filter elements immersed in a bath, equipped with filter cloth and separated by internal cells into filtering, drying and sedimentation zones, a steam collector with a steam supply pipe located above the filter element in the sludge drying zone, characterized in that in order to increase the efficiency of sludge dewatering by providing the same temperature over the whole ft of light surface, the steam trap is equipped with a partition made of heat conducting material and separating it into the outer u and inner cameos
    5 and the steam supply pipe is attached to the external chamber of the steam collector, while the partition is made not reaching the end wall of the steam collector remote from the steam supply pipe.
    [3]
    3. The vacuum filter according to claim 2, characterized in that it is provided with a high-pressure steam tank located above the extraction zone.
    [4]
    4. The vacuum filter according to claim 2, wherein the end walls of the steam collectors are provided with elastic seals.
    Information sources,
    0 taken into account in the examination
    1. Accepted for Germany. 1177572, cl. 1 a 15. 2. USSR author's certificate D 446286, cl. B 01 D 25/24,
    5 March 30, 73
    BA.
    lo
    D / 1. "
    类似技术:
    公开号 | 公开日 | 专利标题
    SU730279A3|1980-04-25|Method and vacuum filter of suspension dehydration
    US3029948A|1962-04-17|Filtering technique
    SE7909929L|1981-05-31|PROCEDURE FOR THE PRODUCTION OF FISHMILL
    US3319789A|1967-05-16|Method of filtering liquid from solid particles
    JPS63116712A|1988-05-21|Separating and drying apparatus
    US2021122A|1935-11-12|Apparatus and method for separating solids from liquids
    US1968910A|1934-08-07|Drying apparatus and method
    US3326457A|1967-06-20|Method and apparatus for steamassisted centrifugal dewatering
    RU2671355C2|2018-10-30|Filter for continuous filtration of suspension under pressure
    US4293411A|1981-10-06|Steam seal for disc filter
    US1895276A|1933-01-24|Contintjotrs filtration
    US1943618A|1934-01-16|Drying filter
    SU1445744A1|1988-12-23|Rotary film apparatus
    SU1738297A1|1992-06-07|Pulsating type crystallizer
    US1987175A|1935-01-08|Apparatus for clay-treating oils
    SU1533748A1|1990-01-07|Apparatus for hydrothermal treatment
    SU411909A1|1974-01-25|
    KR900005904A|1990-05-07|Method for manufacturing oyster clam juice and its device
    SU1263284A1|1986-10-15|Apparatus for dehydration of petroleum products
    US1796492A|1931-03-17|Submerged continuous filter
    SU959804A1|1982-09-23|Method and apparatus for filtering suspensions on drum vacuum filter
    SU638347A1|1978-12-25|Filtration and sediment-drying unit
    RU2128812C1|1999-04-10|Equipment drying loose materials
    SU649446A1|1979-02-28|Drum-type suction filter
    RU2091125C1|1997-09-27|Filter-drier
    同族专利:
    公开号 | 公开日
    JPS5281767A|1977-07-08|
    DE2558794B2|1980-11-27|
    US4115265A|1978-09-19|
    PL111111B1|1980-08-30|
    AU510317B2|1980-06-19|
    DE2558794A1|1977-07-14|
    AU2026676A|1978-06-08|
    ZA767537B|1977-11-30|
    DE2558794C3|1981-06-25|
    BR7608655A|1978-01-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2198412A|1935-01-02|1940-04-23|Engineering Inc|Removal and recovery of solvent|
    US2166379A|1936-03-12|1939-07-18|Brown Instr Co|Drier|
    US2301803A|1939-08-19|1942-11-10|Prosperity Co Inc|Method and apparatus for recovering liquid|
    US2406820A|1943-04-19|1946-09-03|Permanente Metals Corp|Method for removing suspended matter from suspensions|
    DE1177572B|1963-05-16|1964-09-10|Harpener Bergbau Ag|Method and device for dewatering coal feasts|
    DE1895629U|1964-02-27|1964-07-02|Saarbergwerke Ag|DRUM FILTER WITH STEAM HOOD.|
    FR87549E|1965-03-22|1966-06-24|Harpener Bergbau Ag|Method and device for dewatering coal sludge or sludge|
    US3592341A|1970-01-05|1971-07-13|Envirotech Corp|Method and apparatus for steam drying filter cake|
    US3744543A|1970-10-30|1973-07-10|Envirotech Corp|Method for steam drying filter cake|US4338201A|1979-08-15|1982-07-06|Fabcon|Continuous separation system|
    US4248709A|1979-09-07|1981-02-03|Robert Irving|Method of filtering sewer scum and apparatus therefor|
    US4303524A|1980-05-28|1981-12-01|Richards Thomas E|Rotary vacuum precoat filter|
    US4313919A|1980-07-15|1982-02-02|Occidental Chemical Company|Process for removing fine solids from phosphoric acid by vacuum filtration|
    US5227058A|1990-02-13|1993-07-13|A. Ahlstrom Corporation|Apparatus for removing liquid from the thickeners, filters, and washers|
    AT398389B|1992-11-06|1994-11-25|Andritz Patentverwaltung|METHOD AND SYSTEM FOR SEPARATING SOLID / LIQUID MIXTURES|
    US6409929B2|1992-11-11|2002-06-25|Bokela Ingenieurgesellschaft Fur Mechanische Verfahrenstechnik Mbh|Steam drying of rotary filter cakes without crack formation|
    US5928508A|1995-05-22|1999-07-27|Siemens Aktiengesellschaft|Method and apparatus for separating a medium into a solids-containing component and a liquid component|
    US6063294A|1996-10-15|2000-05-16|Baker Hughes Incorporated|Uniform area shower for disc filter|
    US5968372A|1996-12-16|1999-10-19|Baker Hughes Incorporated|Logic controlled traversing shower|
    FI111812B|2000-12-08|2003-09-30|Outokumpu Oy|filtering method|
    WO2012017315A1|2010-08-04|2012-02-09|Flsmidth A/S|Calciner exhaust gas filter cake drying process|
    EP2520348A1|2011-05-02|2012-11-07|Siemens Aktiengesellschaft|Filter device, method for its operation and usage|
    EP2522414A1|2011-05-11|2012-11-14|Siemens Aktiengesellschaft|Filter device, method for its operation and usage|
    CN105903250B|2016-06-13|2018-04-13|李挺树|There is filter cloth vacuum suction filter filter cloth pull of vacuum washing system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2558794A|DE2558794C3|1975-12-24|1975-12-24|Process for dewatering suspensions by means of filters working with negative pressure and filters for carrying out the process|
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