• 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:
    The invention relates to a device for purifying a product gas from a wood gasifier with a housing (1) having a gas inlet (2) and a gas outlet (3) and having at least one product gas section (16) connected to the gas inlet (2) and one connected to the gas inlet Described gas outlet (3) connected clean gas portion (17) arranged filter element (8) having a support basket (9) in the form of a hollow body of rotation of straight generatrix and on the outside of the support basket (9), externally acted upon by the product gas filter shell ( 10) comprises a non-woven fabric. In order to ensure advantageous cleaning conditions, it is proposed that in the product gas section (16) a scraper (29) abutting a generatrix on the filter casing (10) be provided and rotatable relative to the support basket (9) about its axis of rotation (28).
    公开号:AT519983A4
    申请号:T50986/2017
    申请日:2017-11-29
    公开日:2018-12-15
    发明作者:
    申请人:Hargassner Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for purifying a product gas from a wood gasifier with a housing having a gas inlet and a gas outlet and having at least one filter element connected between a product gas section connected to the gas inlet and a clean gas section connected to the gas outlet hollow rotating body of straight generatrix and a voltage applied to the outside of the support basket, externally acted upon by the product gas filter jacket comprises a non-woven fabric.
    In order to allow a longer continuous operation to the necessary filter cleaning compared to conventional ceramic filters, it is in filter devices for
    Pyrolysis gases from wood gasification known (GB 2514312 A) to use filter elements having a hollow support basket in the form of a cone or a cylinder and are provided on the outside with a filter sheath made of a non-woven fabric. When passing through the filter element from the outside acting on the product gas through the filter element, the entrained solid particles are retained by the filter casing and form a filter cake. The clean gas can be removed through the hollow support basket of the filter element.
    Although the filter cake which builds up on the nonwoven fabric of the filter casing is decisive for the cleaning performance of the filter element, the flow resistance increasing with the growth of the filter cake limits the maintenance-free use of the filter element, so that upon reaching a filter element
    Threshold of increasing with the growing filter cake
    Pressure loss, the filter element must be at least freed from a portion of the filter cake, for example, by a pulse-like blowing from the inside of the support basket ago, but this interrupting the continuous
    Product gas flow through the filter element and thus the use of the
    Conditional filter element.
    The invention is thus based on the object, a device for cleaning the product gas from a wood gasifier in such a way that the necessary maintenance of the filter element can be made without interrupting the cleaning of the product gas.
    Based on a device of the type described, the invention solves the problem by the fact that in the product gas portion provided along a generatrix on the filter casing stripper and is rotatable relative to the support basket about its axis of rotation.
    By providing a scraper, which can be rotated relative to the support basket of the filter element about its axis of rotation, a portion of the filter cake during product gas cleaning can be stripped from the filter casing, to an extent that does not affect the improved by the filter cake cleaning effect. The employment of the straight scraper along a
    Generating the support body forming a body of rotation represents simple design conditions for an effective partial removal of the filter cake, because by this measure a uniform removal over the entire length of the generatrix can be ensured if for a corresponding
    System pressure of the scraper on the filter element is ensured. These advantages can be advantageously used especially in support baskets in the form of a cylinder.
    Although it is possible in principle, the scraper held at non-rotatable
    Support basket to rotate around the filter element, there are particularly favorable design conditions, when the support basket is rotatable about its axis of rotation relative to the non-rotatably held scraper. Due to the non-rotatably held scraper eliminates the need to provide the filter element space for the trajectory of the scraper, which is a more crowded
    Construction allowed. In addition, it is structurally easier to ensure a preferably adjustable contact pressure of the scraper on the filter casing.
    The removal of the filter cake can be automated in a simple manner when the drive for the support basket is actuated depending on the pressure drop across the filter element, because then the pressure drop across the filter element can be kept within a permissible range, on the one hand ensures adequate cleaning performance and on the other hand energy use limited to product gas production. For filter devices of the type according to the invention, particularly advantageous design requirements arise when the support basket is rotatably mounted rotatably in a gas-tight sealing the product gas portion of the housing, because in this case the rotatably mounted in use filter element must be used only with the use of the housing. The the
    Product gas portion of the housing gas-tight final use thus separates this product gas portion of the clean gas portion of the housing, which can be closed by a removable lid. Such a housing cover can advantageously support the drive for the support basket, so that with the
    Attachment of the housing cover to the housing is also provided for a drive connection between the drive and the support cage when a plug-in coupling is provided for the rotary drive of the support cage rotatably mounted in use between the drive and the support cage.
    In the drawing, the subject invention is shown, for example. Show it
    1 shows a device according to the invention for cleaning a product gas from a wood gasifier in a simplified longitudinal section,
    Fig. 2 shows this device in a section along the line II-II of Fig. 1 on a larger scale and
    Fig. 3 is a partially torn plan view of the device also on a larger scale.
    The device shown has a housing 1 with a gas inlet 2 for the product gas to be purified and with a gas outlet 3 for the clean gas. The housing 1 receives an insert 4, which has a frame of a bottom plate 5 and a cover plate 7 connected to the bottom plate 5 by tie rods 6. In this frame, two filter elements 8 are rotatably mounted. The matching filter elements 8 comprise a cylindrical support basket 9, for example of a perforated plate, and one on the
    Outside of the support basket 9 provided filter jacket 10 made of a non-woven fabric, preferably a mineral wool fleece. The support baskets 9 are provided below with a gas-tight bottom 11, which via a pivot bearing 12 with respect to the
    Bottom plate 5 is guided. The support baskets 9 are on the opposite side
    Top side with a central guide collar 13 rotatably mounted in the cover plate 7.
    The cover plate 7 of the insert 4 is provided with a parallel to the casing of the housing 1 extending edge web 14 which is supported by a circumferential seal 15 above the gas inlet 2 on the housing 1 load-bearing. Since the guide collar 13 of the support baskets 9 passes through the cover plate 7 in a gas-tight manner, the insert 4 closes a product gas section 16 of the housing 1 connected to the gas inlet 2 from above the insert 4
    Raw gas section 17, which is located between the insert 4 and a
    Housing cover 18 results and is connected to the gas outlet 3.
    The housing cover 18 carries a drive 19 for the two filter elements 8. This drive 19 comprises an electric motor 20 which drives the drive gear 22 for the one filter element 8 and via an intermediate gear 23, the drive gear 24 for the other filter element 8 via a gear 21. The shafts of the drive gears 22 and 24 carry driving finger 25 as a driving part of a plug-in coupling 26, the driven part of which is formed by a ring of the support baskets 9 associated receptacles 27 for the driver fingers 25. Due to run-on slopes engage the Mitnehmerfinger 25 when closing the housing cover 18 under a possible rotation of the support baskets 9 independently in the plug receptacles 27 so that upon actuation of the electric motor 20 is provided after closing the housing cover 18 for rotation of the support baskets 9.
    The rotation of the filter elements 8 is required for the partial mechanical removal of the filter cake which builds up on the filter casing 10 by means of scrapers 29 held in the insert 4 and parallel to the axis of rotation 28 of the filter elements 8. The attached by a fastening strip 30 on the insert 4 and adjustable with respect to the employment of the filter shells 10 stripper 29 strip at a rotation of the filter elements 8 a portion of the filter cake 10 constructed on the filter cake. The removed from the filter shells 10 parts of the filter cake can be discharged from the housing 1 by means of a screw 31 as shown in FIG. The worm drive is designated 32. In FIG. 2, for the sake of clarity, only the screw channel 33 in the housing bottom is indicated.
    The usually by an upstream heat exchanger on the
    Gas inlet 2 in the product gas section 16 flowing product gas from a
    Wood gasifier flows through the filter casing 10 of the two filter elements 8 below
    Separation of the solids as a clean gas that passes through the guide collars 13 in the clean gas section 17 between the insert 4 and the housing cover 18 and exiting through the gas outlet 3 from the housing 1.
    The pressure drop on the filter casing 10 can advantageously be monitored to control the drive 19 for the filter elements 8. If this pressure drop increases above a predetermined threshold value, then the electric motor 20 is switched on so that the wipers 29 remove a portion of the filter cake accumulated on the filter casing until the pressure drop across the filter jackets 10 drops below a lower one
    Threshold falls. Since this filter cleaning does not affect the filter function, the filter device can be operated in a continuous operation despite the necessary filter cleaning.
    权利要求:
    Claims (6)
    [1]
    claims
    An apparatus for purifying a product gas from a wood gasifier having a housing (1) having a gas inlet (2) and a gas outlet (3) and at least one product gas section (16) connected to the gas inlet (2) and one with the gas outlet (3) connected clean gas section (17) arranged filter element (8) having a support basket (9) in the form of a hollow body of rotation of straight generatrix and on the outside of the support basket (9), externally acted upon by the product gas filter jacket (10) comprising a nonwoven fabric, characterized in that in the product gas section (16) along a generatrix on the filter casing (10) abutting scraper (29) and relative to the support basket (9) about its axis of rotation (28) is rotatable.
    [2]
    2. Apparatus according to claim 1, characterized in that the support basket (9) about its axis of rotation (28) relative to the non-rotatably held scraper (29) is rotatable.
    [3]
    3. Device according to claim 1 or 2, characterized in that the support basket (9) forms a cylinder.
    [4]
    4. Apparatus according to claim 2 or 3, characterized in that the drive for the support basket (9) in response to the pressure drop across the filter element (8) is actuated.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the support basket (9) rotatably mounted in a product gas portion (16) of the housing (1) gastight final use (4) is rotatably mounted.
    [6]
    6. The device according to claim 5, characterized in that the clean gas portion (17) of the housing (1) by a removable housing cover (18) is closed at the top, which carries the drive (19) for the support basket (9), and that between the drive (19) and the support basket (9) a plug-in coupling (26) is provided.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE2828976C2|1983-06-01|Alluvial candle filter device for dry discharge and method for cleaning the device
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    DE1436287A1|1969-02-20|Process for filtering a fluid and system for carrying out the process
    DE3507303A1|1985-09-05|PLANT FOR TREATING AND PURIFYING POLLUTED GASES
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    DE1619838B2|1971-03-25|GAS SEPARATOR
    DE102010038417A1|2012-01-26|Apparatus and method for removing screenings from a liquid
    EP0049746B1|1983-12-14|Edge filter for lubrication oil
    DE102013203491A1|2014-09-04|Device for cleaning impurities e.g. emulsions in workpiece, has cleaning chamber that is formed with air inlet via which air is passed for cleaning workpiece in cleaning chamber, during cleaning operation
    DE2254490C3|1981-09-10|Device for separating waste fibers from an air stream
    EP2305992A2|2011-04-06|Air filter for combustion engine
    DE3119456C2|1988-08-11|
    EP0768430A1|1997-04-16|Arrangement for collecting debris from fluid flowing in a channel
    CH436132A|1967-05-15|centrifuge
    DE1536784B2|1974-08-29|Rotary drum filter for cleaning liquids
    DE20215433U1|2004-02-19|Device for removing sparks or the like. from a gas stream
    DE102019200304A1|2020-07-16|Filter system for purifying a gas stream laden with particles and arrangement for purifying a gas stream laden with particles of a fluidizing apparatus by means of a filter system
    EP0062628B1|1984-09-19|Continuously running dehydration apparatus
    DE4320419A1|1994-12-22|Liquid filter unit, in particular for rainwater
    EP0622099A1|1994-11-02|Separating and filtering device for solid/liquid separation, especially with drying aid
    DE102010062970A1|2012-06-14|Device for separation of screenings from liquid, particularly from residual water, has screen basket and wiper interacting with screen area of screen basket
    DE19752090A1|1999-05-27|Filter device
    DE102019217385A1|2021-05-12|Liquid filter device
    同族专利:
    公开号 | 公开日
    EP3492161A1|2019-06-05|
    AT519983B1|2018-12-15|
    EP3492161B1|2021-09-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6733575B1|1999-06-18|2004-05-11|N.V. Bekaert S.A.|Hot gas filtration system|
    DE202006019878U1|2006-06-20|2007-04-26|Kuntschar, Walter|Filter for purifying gases from wood gasifier, e.g. gas for use in combustion engines, comprises number of high temperature-resistant filter cartridges between gas inlet and outlet in gastight housing |
    US20110265651A1|2010-04-30|2011-11-03|Tm Industrial Supply, Inc.|Filter|
    DE102011122158A1|2011-12-23|2013-06-27|Uwe Athmann|Method for preparation and purification of calorific value-rich product gas for turbo engine e.g. petrol engine of vehicle, involves supplying product gas into fiber filter device for filtering and cleaning|
    GB2514312A|2012-12-13|2014-11-26|Future Blends Ltd|Filter and process for producing liquid products from biomass pyrolysis products|
    DE102013215431A1|2013-08-06|2015-02-12|Walter Schätzl|Filter device, biomass gasification plant and method|
    FR874535A|1941-04-05|1942-08-10|Improvements made to filtration devices and more. mainly to purification filters for gasifier|
    GB0224481D0|2002-10-22|2002-11-27|Clark Alan D|Treatment of fluids|CN111467901A|2020-04-16|2020-07-31|高邮成鑫金属制造有限公司|Curtain type smoke dust treatment and purification system for hot galvanizing|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50986/2017A|AT519983B1|2017-11-29|2017-11-29|Device for purifying a product gas|ATA50986/2017A| AT519983B1|2017-11-29|2017-11-29|Device for purifying a product gas|
    EP18194827.4A| EP3492161B1|2017-11-29|2018-09-17|Device for purifying a product gas|
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