• 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:
    A cyclone separator for use in a cement production plant, comprising a cylindrical upper portion and a conical lower portion, the cylindrical upper portion comprising a tangential inlet, an upper cover wall and a centrally disposed dip tube axially traversing the cover wall and projecting into the cylindrical portion and wherein the conical lower portion comprises a cone wall tapering conically to a lower outlet coaxial with the dip tube. At least one longitudinal baffle is disposed in the cyclone separator to extend in an axial direction from the dip tube to the cone wall.
    公开号:AT517209A4
    申请号:T351/2015
    申请日:2015-06-05
    公开日:2016-12-15
    发明作者:Thomas Lamare
    申请人:Holcim Technology Ltd；
    IPC主号:
    专利说明:

    The invention relates to a cyclone separator for use in a Zementioriorioranlage comprising a cylindrical upper portion and a conical lower portion, wherein the cylindrical upper portion has a tangential inlet, an upper cover wall and a centrally disposed dip tube, which traverses the cover wall axially and into the cylindrical Section, and wherein the conical lower section comprises a conical wall that tapers conically to a lower-outlet which is coaxial -------------- -------------------- is arranged with the dip tube.
    A key component of clinker and cement production is the cyclone separator. It is used as a cross-flow heat exchanger in suspension preheaters or as a
    Particle separator used in raw material mills, cement mills and dedusting applications. A cyclone is a vessel with a conical section. A dust-carrying gas stream is fed tangentially into the cyclone, causing an external vortex in the vessel. The external vortex is a high velocity stream of gas rotating in a helical pattern from the top of the cyclone along the conically tapering section to the narrow end region at the bottom of the cyclone. There, the gas generates an internal vortex, which is a helical gas flow, which flows upwards and leaves the cyclone through the dip tube arranged at the head end of the cyclone. The internal vortex is arranged within the external vortex and coaxial with the latter.
    The separation of particles from the gas stream is achieved as follows. Heavier particles in the rotating stream have too much inertia to follow the tight curve of the outer vortex and are collected at the cyclone wall where they fall down and exit the cyclone via the lower outlet opening. In a cone-shaped system, as the outer vortex approaches the narrow end of the cyclone, the radius of rotation of the stream is reduced, thus separating smaller and smaller particles. The geometry of the cyclone, along with the flow velocity, defines the separation limit of the cyclone.
    The number of used in gas suspension preheaters
    Cyclone stages varies ...... from one ...... to ...... ~ aech5 "............. In raw material mills ..... .... ...... ....... or in cooler dedusting applications, cyclones are commonly used in pairs, and energy in the form of blower power is needed to drive the gas through the cyclones - the blower power needed to move the gases driving through the row of cyclones is substantially proportional to the accumulated pressure drop that occurs in the cyclone separators Therefore, reducing the pressure drop occurring in each cyclone separator would be desirable to reduce the blower power needed to pass the gas through to drive a row with a fixed number of cyclone separators or to increase the number of cyclone separators in a series of cyclones without increasing the required blower capacity.
    Existing cyclone modifications aimed at reducing the pressure drop generally change the shape of the cyclone inlet and outlet or sometimes insert propeller blades into the outlet, such as systems installed as an extension to the dip tube (Hurrivane® , manufactured by A TEC). These solutions imply substantial modifications to cyclone geometry at significant cost.
    Therefore, it is an object of this invention to reduce the pressure drop in cyclone separators with minimal structural modifications and at low cost.
    To achieve these and other objects, the invention is characterized in that in the cyclone separator at least one longitudinal baffle is arranged to move in an axial direction from the dip tube to the first
    KegerwancT Z'üT '^ TS'tiiröCken ........ Thus ..... the invention consists in ...... to insert a vertical baffle between the dip tube of the cyclone and the cone wall, exactly in the area high tangential velocities at the interface between the inlet and outlet vortices.
    Although high tangential velocities at the cyclone wall are required to achieve high separation efficiency, the highest tangential velocity is found near the core at the interface between the inlet vortex (which moves down) and the outlet vortex (which moves up). The invention only reduces these tangential velocities at the core interface, where much kinetic energy is wasted, thus reducing the overall pressure drop in the cyclone. The efficiency of the cyclone separation is not affected because the invention only changes the core velocities and not the tangential velocities on the cyclone walls where the dust separation occurs.
    Installing a baffle between the dip tube and the cone wall is a relatively simple and quick procedure, reducing the cost and time of interruption of the
    Operation of the preheater are minimized. In particular, the baffle can be inserted either through the lower outlet opening or through the dip tube in the cyclone. ♦
    The baffle is disposed in the cyclone in an axial direction so that it can be precisely aligned at the interface between the outer and the inner vortices. In this way, the efficiency of the baffle is maximized.
    Preferably, a first free end of the baffle with the
    Dip tube connected, and a second-free ^ end bes --------------------------------------- ----------------------
    Baffle is connected to the cone wall. The installation of the baffle on the dip tube and the cone wall can be achieved by conventional mounting techniques such as by screwing. Preferably, the baffle is connected to the dip tube and / or with the cone wall by welding.
    According to a particularly preferred embodiment of the invention, the first free end of the baffle is so connected to the dip tube that it is substantially aligned with respect to a cylindrical wall of the dip tube.
    The baffle of the invention has a longitudinal extent, which substantially corresponds to the distance between the lower edge of the dip tube and the cone wall.
    In particular, the baffle consists of a rod.
    The rod may have a round, oval or rectangular cross-section.
    The function of the baffle is to inhibit the helical flow of gas in the region between the outer and inner vertebrae, where the tangential velocity is at a maximum, without affecting the cyclone's separation function. In this regard, tests have shown that the best results can be achieved if the baffle, in particular the rod, has a diameter, measured in the radial direction, which corresponds to 3-5% of the diameter of the cylindrical section of the cyclone separator.
    Furthermore, the baffle, in particular the rod, preferably has an extension, measured in the tahgent valley '
    Direction that does not exceed 5% of the diameter of the cylindrical section of the cyclone separator.
    In order to ensure uniform flow characteristics, a preferred embodiment of the invention provides that the baffle, in particular the rod, over its entire length has the same diameter, measured in the radial direction.
    Although a single baffle is sufficient to significantly reduce the pressure drop in a cyclone separator, certain embodiments of the invention may provide more than one baffles. In particular, at least two baffles, preferably multiple baffles, are arranged in the cyclone separator, each extending in an axial direction from the dip tube to the cone wall. Preferably, the at least two baffles are arranged at the same distance from the axis of the cyclone separator. Thus, the at least two baffles are arranged along a virtual ring that is coaxial with the dip tube and the lower outlet port. The at least two baffles, in particular the multiple baffles, are preferably distributed uniformly along this ring.
    The invention will now be described with reference to an exemplary embodiment shown in FIGS. 1 and 2. Fig. 1 shows a cyclone separator in a side view, and Fig. 2 shows the cyclone separator of Fig. 1 in a plan view.
    In Fig. 1, a cyclone separator is shown schematically, ..... comprehensively a cylindrical upper section 1 and-eirte-n ----------------------- - Conical lower portion 2, which are arranged coaxially with respect to axis 3. The cylindrical upper section 1 comprises a tangential inlet 4 through which a particle-guiding gas flow is introduced tangentially into the cylindrical upper section 1. The cylindrical upper portion 1 is closed by an upper cover wall 5.
    Upon entry into the cyclone, the particle-carrying gas stream moves down a helical path, thereby forming an outer vortex. The particles contained in the gas stream are pressed outwards against the wall of the cyclone, in particular to the conical wall 6 of the conical lower section 2. The particles fall down along the conical wall 6 and leave the cyclone via the lower outlet 7. The gas turns in Upward direction to form an internal vortex whose diameter substantially corresponds to the diameter of the dip tube 8, which is arranged so that it penetrates through the cover wall 5 in the cylindrical upper portion 1 of the cyclone. The gas leaves the cyclone via the dip tube 8, which is arranged coaxially with the lower outlet 7.
    According to the invention, a baffle 9, in particular a baffle rod, is arranged in the cyclone to extend in an axial direction from the dip tube 8 to the cone wall 6.
    In the plan view according to FIG. 2, the tangential inlet 4 can be seen in greater detail, as well as the arrangement of the baffle 9.
    权利要求:
    Claims (10)
    [1]
    claims:
    A cyclone separator for use in a cement production plant, comprising a cylindrical upper portion and a conical lower portion, the cylindrical upper portion comprising a tangential inlet, an upper cover wall, and a centrally disposed dip tube axially traversing the cover wall and projecting into the cylindrical portion And wherein the conical lower portion comprises a cone wall tapering conically to a lower outlet coaxial with the dip tube, characterized in that at least one longitudinal baffle is disposed in the cyclone separator, to extend in an axial direction from the dip tube to the cone wall.
    [2]
    2. Cyclonic separator according to claim 1, wherein a first free end of the baffle is connected to the dip tube, and a second free end of the baffle is connected to the cone wall.
    [3]
    3. Cyclonic separator according to claim 2, wherein the first free end of the baffle is connected to the dip tube so that it is substantially aligned with respect to a cylindrical wall of the dip tube.
    [4]
    4. cyclone separator according to claim 1, 2 or 3, wherein the baffle is connected to the dip tube and / or with the cone wall by welding.
    [5]
    5. Cyclone separator according to one of claims 1 to 4, wherein the baffle consists of a rod.
    [6]
    6. cyclone separator according to one of claims 1 to 5, wherein the rod has a round, oval or rectangular cross-section.
    [7]
    7. cyclone separator according to one of claims 1 to 6, wherein the baffle, in particular the rod, a diameter, measured in the radial direction, which corresponds to 3-5% of the diameter of the cylindrical portion of ------- Zyklonsabscheiders -------------------------------------------------- -------------------------------------------------- ---------------------------------
    [8]
    8. cyclone separator according to one of claims 1 to 7, wherein the baffle, in particular the rod, over its entire length the same diameter, measured in the radial direction having.
    [9]
    9. cyclone separator according to one of claims 1 to 8, wherein at least two baffles, preferably multiple baffles, are arranged in the cyclone separator, each extending in an axial direction from the dip tube to the cone wall.
    [10]
    10. cyclone separator according to claim 9, wherein the at least two baffles are arranged at the same distance from the axis of the Zyklonsabscheiders.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0215075B1|1989-06-14|Cyclone separator with two separator chambers and static guide devices
    DE1811800C3|1981-11-05|Device for separating entrained particles from a gas flow
    DE69829747T2|2006-03-16|CYCLONE
    WO2013092182A1|2013-06-27|Centrifugal-force separator and filter arrangement having a centrifugal-force separator of said type
    DE2818791A1|1978-11-16|SWIRL TUBE FOR CYCLONE SEPARATOR
    DE202012012714U1|2013-09-26|Centrifugal separator and filter arrangement
    DE3122052A1|1982-02-18|Cyclone separator
    DE3030980A1|1981-03-12|HYDROCYCLONE.
    EP2624960B1|2018-05-30|Separating device with a cyclonic separator
    AT517209B1|2016-12-15|cyclone
    CH642278A5|1984-04-13|CYCLONE SEPARATOR FOR SEPARATING HEAVY AND DUST PARTS FROM FIBER MATERIAL.
    DE3624086C2|1990-05-10|
    DE3414088C2|1987-09-17|
    DE19837250C1|2000-03-30|Separator for a water-steam separator
    DE3040603C2|1984-03-15|Centrifugal separator
    DE631888C|1936-06-29|Centrifugal dust collector
    DE102011009741B4|2021-06-02|Centrifugal separator with particle chute
    EP2387468B1|2018-04-25|Cyclone with inlet flow guiding pipe
    DE134360C|1902-09-02|Centrifugal air cleaner with fixed partitions in the air exhaust pipe
    DD300816A5|1992-08-06|METHOD AND DEVICE FOR SEPARATING SUBSTANCES FROM A MEDIUM
    AT517463B1|2017-02-15|Guide device of a separation device
    DE2149975A1|1973-04-12|Cyclone separator - with concentric flow guide to reduce free flow area and improve separation efficiency
    DE202018103655U1|2018-07-26|Cyclone with vanes
    AT164520B|1949-11-25|Centrifugal separator
    DE2220534C3|1975-04-30|Rotary flow vortex for the sifting and separation of fine-grained particles
    同族专利:
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    EP3302811A1|2018-04-11|
    MA43156A|2018-09-12|
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    PH12017502202A1|2018-06-11|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2222930A|1939-04-14|1940-11-26|Gerald D Arnold|Centrifugal separator|
    US2482362A|1946-10-07|1949-09-20|Chauncey M Park|Dust collector|
    US3675401A|1970-04-13|1972-07-11|Exxon Research Engineering Co|Cyclones to lessen fouling|
    US3802570A|1972-10-25|1974-04-09|M Dehne|Cyclone separator|
    GB2007118B|1977-08-02|1982-02-24|British Petroleum Co|Cyclone|
    US4696737A|1986-02-28|1987-09-29|The Bauer Bros. Co.|Fiber recovery elutriating hydrocyclone|
    US4927298A|1988-02-22|1990-05-22|Tuszko Wlodzimier J|Cyclone separating method and apparatus|
    US5028318A|1989-04-19|1991-07-02|Aeroquip Corporation|Cyclonic system for separating debris particles from fluids|
    US5180257A|1989-12-16|1993-01-19|Onoda Cement Co. Ltd.|Straightening instrument and cyclone|
    CN2076880U|1990-03-21|1991-05-15|西安冶金建筑学院|Energy-saving vortex duster|
    CN2234310Y|1995-03-09|1996-09-04|克洛德拉瓦尔公司|Apparatus for removing solid particles from fluid|
    AUPP554698A0|1998-08-28|1998-09-17|University Of Queensland, The|Cyclone separation apparatus|
    CN2465806Y|2001-01-18|2001-12-19|清华大学|Low-resistance high-efficiency cyclone dust extractor|
    US8104622B2|2003-08-29|2012-01-31|Vulco, S.A.|Cyclone separator having an inlet head|
    CL2003001757A1|2003-08-29|2005-01-21|Vulco Sa|INPUT HEAD FOR HYDROCICLON, IN WHICH THE HEIGHT OF THE VORTICE SEARCH, IS A FRACTION OF THE HEIGHT OF THE POWER INPUT, WHICH IS RECTANGULAR, WHERE SUCH ENTRY HAS A FIRST SECTOR FORMING A HORIZONTAL VOLUTE, AND A SEQUENCE|
    EP1919628A1|2005-08-12|2008-05-14|Weir Minerals Australia Ltd|Improvements in and relating to hydrocyclones|
    CN101918143A|2007-08-16|2010-12-15|塔塔钢铁有限公司|Cyclone for dense medium separation|
    CN101422757B|2007-11-01|2010-08-25|中国石油大学|High efficient low resistance cyclone separator|
    CN101269289A|2008-04-23|2008-09-24|清华大学|Resistance reduction type centrifugal separation device|
    CN202447206U|2012-03-02|2012-09-26|中国电子科技集团公司第十八研究所|Adjustable gas liquid separation device|JP6597744B2|2017-09-29|2019-10-30|ダイキン工業株式会社|Oil separator|
    法律状态:
    2021-02-15| MM01| Lapse because of not paying annual fees|Effective date: 20200605 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA351/2015A|AT517209B1|2015-06-05|2015-06-05|cyclone|ATA351/2015A| AT517209B1|2015-06-05|2015-06-05|cyclone|
    CN201680032804.7A| CN107666965A|2015-06-05|2016-05-30|Cyclone separator|
    MA043156A| MA43156A|2015-06-05|2016-05-30|CYCLONE SEPARATOR|
    PCT/IB2016/000734| WO2016193802A1|2015-06-05|2016-05-30|Cyclone separator|
    US15/579,819| US20180154375A1|2015-06-05|2016-05-30|Cyclone separator|
    EP16739245.5A| EP3302811A1|2015-06-05|2016-05-30|Cyclone separator|
    MX2017015355A| MX2017015355A|2015-06-05|2016-05-30|Cyclone separator.|
    ARP160101662A| AR104905A1|2015-06-05|2016-06-03|CYCLONE SEPARATOR|
    PH12017502202A| PH12017502202A1|2015-06-05|2017-12-01|Cyclone separator|
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