• 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:
    In the method according to the invention for drying wood chips, which are used as raw material for a gas-producing reactor (6) whose product gas is used at least partly in a combined heat and power plant (CHP), provision is made for air from the CHP to be removed from the wood chips in a dry bunker (3 ) and dries, and that the wood chips pass through a first air-tight lock (2) in the dry bunker (3) and through a second air-tight lock (4) from the drying bunker. The device according to the invention has a dry bunker (3) between a warehouse for wood chips and a reactor (6) whose product gas is passed to a CHP. The conveying means for the wood chips has a gas-tight lock at the inlet to and at the outlet from the drying bunker (3), and a warm air duct coming from the CHP leads to the drying bunker, which has at least one outlet for the cooled, humidified air.
    公开号:AT517644A2
    申请号:T546/2015
    申请日:2015-08-18
    公开日:2017-03-15
    发明作者:Gaston Ing Glock
    申请人:Gaston Ing Glock；
    IPC主号:
    专利说明:

    Method and device for drying wood chips
    The invention relates to a method and apparatus for drying wood chips according to the preamble of claim 1 and claim 4 as a raw material for a gas generator (reactor), as described in the unpublished EP 15158828 of the same applicant, and in connection is operated with a combined heat and power plant. The wood chips which are fed to such a wood gasification reactor should, calculated in percent by weight and based on the dry weight of the wood chips, have a moisture content of at most 15%.
    Since "raw" wood chips usually have between 35 and 50 wt .-% moisture, they are dried in the prior art on dry floors in special dryers, usually with energy that is independent of the energy flow of the subsequent use of wood chips (external energy), and then stored in one or more bunkers. Due to the storage process, they absorb moisture from the ambient air again, which must be taken into account in the degree of drying. The dryers and bunkers need space, bind capital and require maintenance.
    Wood drying in the introduction into the reactor is not possible in spite of the large heat set in the reactor, since the necessary heat of vaporization lowers the temperature reached in the reactor so much that the temperature necessary to produce synthesis gas according to Boudouard's equilibrium is no longer reached.
    It is an object of the invention to provide a simpler and more cost effective process management and corresponding low cost equipment.
    According to the invention, this is done by a method or a device having the features stated in the characterizing parts of the dependent claims. In other words, in a bunker located as directly as possible upstream of the reactor, the starting material, which moves from top to bottom in this bunker according to the amount fed to the reactor per unit time, supplies exhaust air from the block heating plant in the lower region and this in the To pass countercurrent upward through the bunker. To supplement, but especially to start can be provided to blow with foreign energy through a heat exchanger heated air. The corresponding plant engineering provides according to the invention, a bunker, seen in the procedure, as close as possible to arrange before the reactor, preferably in terms of plant technology above the bunker, and the exhaust of the cogeneration at least partially controlled by a corresponding control element, in an appropriate amount in the lower area of the bunker and deduct in its upper area. Preferably, the raw material flow to the bunker by gas-tight as possible locks, preferably rotary valves, or the like, fed or removed.
    The (at least predominantly) used energy thus comes from the waste heat and the radiation losses of the engine block, is thus virtually "free". As a result of the method according to the invention, the dried wood chips no longer come into contact with ambient air and therefore no longer absorb any moisture. The expensive dry floors and intermediate bunkers are completely eliminated.
    The invention will be explained in more detail below with reference to the drawing. 1 shows a flow diagram according to the invention, very schematically, and FIG. 2 shows a schematic arrangement of the individual components.
    As can be seen from FIG. 1, the raw material to be gasified, wood in a sliced form, arrives from a heap, a tank or bunker etc. via a delivery line 1 to a gas-tight lock 2, for example a rotary valve. From there, the raw material falls or slips into a dry bunker 3, at the lower end of which it is withdrawn, again through a gas-tight lock 4, and, possibly through an intermediate line 5, reaches the actual reactor 6.
    The reactor 6 is known in various embodiments from the prior art and will therefore not be explained in detail at this point in order to avoid verbosity. It should only be noted that from the reactor 6 at least one
    Product gas line 7 leads out (in the diagram purely schematically from the bottom), in which the product gas is transported for further use. This use now includes at least one combined heat and power plant (CHP).
    According to the invention, a controllable hot air duct 8 leads from the CHP into the lower area of the dry bunker 3, where it flows into the interior in one or preferably several nozzle-like openings. This supplied, heated by the heat radiation in the CHP warm air, which here serves to dry the incoming raw material and this also heated countercurrently, is now loaded with moisture, in the upper part of the drying bunker 3 by one or preferably several removal openings and then through a loop or the like. and an exhaust duct 9 removed. This cooled and laden with moisture air is harmless and is discharged, possibly after filtering, in the environment.
    By this type of drying, it is achieved that in the reactor easily and permanently operating conditions can be met, which are particularly favorable and advantageous for wood gasification. It has been found to be particularly desirable that the dry bunker 3, in which the drying takes place and the reactor 6 are arranged spatially as close to each other, so that the entering into the reactor Good, the raw material, the wood chips, not only dry, as it has been sought so far, but also still thermal energy in the form of heating, which comes equal to a preheating, is returned to the reactor. Regarding the purely schematic Fig. 1, this means that instead of the intermediate line 5, the lock 4 sits directly on the head of the reactor 6. Thus, the energy necessary to reach the favorable side of Boudouard's balance is achieved in a particularly favorable manner.
    It has further been found that this is made possible, at least in essence, also by the use of external energy, but it is ultimately so that, as already mentioned, the spatial proximity and also the heating and drying always only in the immediate future possible in the reactor (converter) reaching raw material plays the most important role, as this, the energy used for drying is introduced to the maximum extent again in the reactor, and so the thermal losses can be kept low. For the starting process of the wood gasification and for extreme operating situations, the provision of a preferably only additional heating of the outside energy can be useful. In this case, air (ambient air, exhaust air from buildings, etc.) is heated with external energy in heat exchangers and blown from bottom to top through the dry bunker, instead of or in addition to the exhaust gas of the CHP. This embodiment or starting aid is not shown in FIG. 1.
    FIG. 2 shows, on the one hand, the external heating explained above and, on the other hand, a variant in which the heated air, be it from the CHP, be it the foreign-heated or a combination, is blown substantially horizontally and thus through the dry hopper 3 in a cross-flow. As sluices 2, 4 slide or rotary valve are indicated, the formation of the inlet nozzles and the outlet openings is easy to make for the expert in the knowledge of the invention.
    That in such a Prozeßfiihrung the best possible thermal insulation of the dry bunker and a placement in the hall at a warm point as possible, are made as close to the reactor is not surprising to those skilled in the previous versions.
    List of reference numbers: 01 Delivery line 06 Reactor 02 Gas-tight lock 07 Product gas line 03 Dry hopper 08 Hot air line 04 Gas-tight lock 09 Exhaust air line 05 Intermediate line CHP Combined heat and power plant
    权利要求:
    Claims (7)
    [1]
    claims:
    1. A method for drying wood chips, which are used as raw material for a gas-generating reactor (6) whose product gas is at least partly used in a combined heat and power plant (CHP), characterized in that air from the CHP, which heats by the heat radiation is, the wood chips heated in a dry bunker (3) and dried, and that the wood chips pass through a first air-tight lock (2) in the dry bunker (3) and through a second air-tight lock (4) from the dry bunker.
    [2]
    2. The method according to claim 1, characterized in that the heated air is fed to the drying bunker (3) in the lower region and the cooled moist air is discharged from the drying bunker in the upper region.
    [3]
    3. The method according to claim 1, characterized in that the heated air is moved in countercurrent to the wood chips.
    [4]
    4. A device for carrying out the method according to claim 1, with a warehouse for wood chips and with a reactor (6) and a CHP, with funding for the individual media that connect the individual components, characterized in that between the bearing and the reactor (6) a dry bunker (3) is provided, that the conveying means for the wood chips has a gas-tight lock at the inlet to and at the outlet from the drying bunker (3), and that leads from the CHP a hot air line to the dry bunker and opens into it, and the dry bunker has at least one outlet for the cooled, humidified air.
    [5]
    5. The device according to claim 4, characterized in that the dry bunker (3) inlet for the wood chips and the outlet for the cooled, humidified air in the upper region and the outlet for the wood chips and the inlet for the heated air in the lower region are arranged.
    [6]
    6. Apparatus according to claim 4 or 5, characterized in that the drying bunker is arranged in the immediate vicinity of the reactor (6).
    [7]
    7. Apparatus according to claim 6, characterized in that the drying bunker above the reactor (6) is arranged.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EA201600551A1|2017-02-28|
    EP3144617A1|2017-03-22|
    US20170051976A1|2017-02-23|
    AT517644A3|2018-08-15|
    KR20170021732A|2017-02-28|
    EA032663B1|2019-06-28|
    AT517644B1|2018-08-15|
    MA41273A|2017-10-31|
    CN106468508B|2021-05-18|
    CN106468508A|2017-03-01|
    JP2017090032A|2017-05-25|
    CA2937003A1|2017-02-18|
    引用文献:
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    US20130257059A1|2012-03-29|2013-10-03|All Power Labs|Compact gasifier-genset architecture|
    EP2902738A1|2014-01-31|2015-08-05|Yanmar Co., Ltd.|Static drying system for organic materials|
    DE102014009351A1|2014-06-29|2015-12-31|Sophie Kornelia Grapengiesser|Heating energy recycling device|
    DD145180A3|1978-10-16|1980-11-26|Herbert Richter|METHOD FOR THE PRINTING AND GASIFICATION OF RAW BROWN COAL|
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    WO2008083703A1|2006-12-28|2008-07-17|Jochen Zingelmann|Method for drying solid and/or liquid waste materials|
    NZ579390A|2007-02-16|2012-03-30|Corky S Carbon And Comb Pty Ltd|Drying and gasification process|
    WO2009103233A1|2008-02-18|2009-08-27|华为技术有限公司|Method and apparatus for assisting registering a data path in a switching procedure|
    US9181509B2|2009-05-22|2015-11-10|University Of Wyoming Research Corporation|Efficient low rank coal gasification, combustion, and processing systems and methods|
    KR101012861B1|2010-04-28|2011-02-08|한국전력공사|Fuel preprocess system for coal combustion boiler|
    US20160304800A1|2013-04-09|2016-10-20|Dia Carbon Technologies Inc.|Torrefaction Process|
    US9562194B2|2014-02-11|2017-02-07|Solex Thermal Science Inc.|Torrefaction reactor|KR20210086123A|2019-12-31|2021-07-08|사회적협동조합 우리동네|Device for drying wood chips|
    KR200494538Y1|2020-01-06|2021-11-02|사회적협동조합 우리동네|Hybrid Wood Chips Drying Apparatus|
    法律状态:
    2019-03-15| PC| Change of the owner|Owner name: GLOCK OEKOENERGIE GMBH, AT Effective date: 20190123 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA546/2015A|AT517644B1|2015-08-18|2015-08-18|Method and device for drying wood chips|ATA546/2015A| AT517644B1|2015-08-18|2015-08-18|Method and device for drying wood chips|
    CA2937003A| CA2937003A1|2015-08-18|2016-07-25|Method and device for drying wood chips|
    CN201610628992.1A| CN106468508B|2015-08-18|2016-08-03|Method and device for drying wood chips|
    KR1020160099338A| KR20170021732A|2015-08-18|2016-08-04|Method and device for drying wood chips|
    MA041273A| MA41273A|2015-08-18|2016-08-07|PROCESS AND DEVICE FOR DRYING WOOD CHIPS|
    EP16183217.5A| EP3144617A1|2015-08-18|2016-08-08|Method and device for drying wood cuts|
    US15/233,074| US20170051976A1|2015-08-18|2016-08-10|Method and device for drying wood chips|
    EA201600551A| EA032663B1|2015-08-18|2016-08-17|Method and device for drying wood chips|
    JP2016159884A| JP7021843B2|2015-08-18|2016-08-17|Methods and equipment for drying wood chips|
    US16/808,144| US11215360B2|2015-08-18|2020-03-03|Method and device for drying wood chips|
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