• 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:
    1. A method of extraction of a liquid phase contained in a solid matter reduced to particles similar to a pulp, in accordance with which this matter is divided into at least 20 layers (3) separated by separator elements (2) and the whole is subjected to one pressure, characterized in that the thickness of each layer (3) lies between 0.4 and 1.5 cm ; the minimum value of the pressure is 2.0 MPa ; the time of keeping under pressure lies between 4 minutes and 2 hours ; and the separator elements (2) are woven fabric.
    公开号:SU1281175A3
    申请号:SU833624054
    申请日:1983-07-22
    公开日:1986-12-30
    发明作者:Дюшам Робер；Мари Лепренс Жан；Фан Тран Нгок；Микловейт Герд-Михаель；Трюшо Патрик
    申请人:Сосьете Дъэтюд Э Де Решерш Де Лъэколь (Фирма)；Насьональ Сюперьер Д' Ар Э Метье /Серам/ (Фирма)；
    IPC主号:
    专利说明:

    112 The invention relates to the sugar industry, in particular to methods for squeezing moisture from fresh beet pulp. The purpose of the invention is more complete removal of the liquid phase from the pulp. FIG. 1 is a diagram of the whole pulp placed in layers between horizontal plates; FIG. 2 the same, layered between vertical plates; in fig. 3 - the same, placed in layers in a roll; in fig. 4 is a graph of the dependence of the solids content (DM) on the number of pulp layers; in FIG. 5 graph of the dependence of the content of CB in the pulp from the pressure of pressing; in fig. 6 is a plot of the content of DM in the pulp and the duration of pressing; Fig. 7 is a graph of the content of the PS content in the pulp versus the initial thickness of the bedrock. On the bottom plate 1, thin layers of fresh pulp 3 are placed between the filter elements 2 to form a bag in which the number of pulp layers should be 2-100. The thickness of each slope may be (-15 nm. When the lower 1 and the vertex 4 are closed, the squeeze pack consisting of the pulp layers is squeezed out to produce a pressure of 0.1-15.0 MPa for 2-60 minutes. The filtering elements 2, installed by the pulp bed 3, are made of 0.5 mm thick propylene web. The bag with pulp layers 3 can also be placed vertically, as shown in Fig. 2. In addition, the beet pulp can be placed thin layer on only one filter element 2 of greater length. After coagulation of element 2 with the This coil is formed as a multi-layered bag, as shown in Fig. 3. When coagulation of element 2 (Fig. 3) into a coil, moisture is simultaneously squeezed out of the pulp. Prn squeeze moisture from the beetle in the horizontal package (Fig. 1) filter elements 2 dollars should have drainage channels on the upper side, while the stop can not be smooth, and when the moisture from the pulp is squeezed out in a vertically arranged package (Fig. 2). or in the coil (Fig. 3), the drainage channels should be located on both sides of the filter elements 2. The filter elements 2 are made of polypropylene web, since this material does not absorb moisture and creates good drainage conditions for squeezing moisture. A good effect is achieved when the thickness of the filter elements 2 is 0.5 mm. An increase in the thickness is impractical, since there is no increase in moisture output from the bundle of ltoma layers, the manufacture of a polypropylene web less than 0.5 mm is difficult. On the surfaces of the filter elements, there are no special channels for removing moisture from the pulp bed package. The diversion channels are the free spaces formed by the thread of interlaced threads. When compressing the pulp layers, the liquid leaks between the free space of the interwoven strands and easily goes outside. From the plot of content, CB on the number of layers of pulp (Fig. 4), it can be seen, but that the intensity of moisture increases, starting from the 2nd to the 30th layer. With a larger number of layers (up to 100), the moisture yield does not increase. From the graph of the dependence of the content of CB on the pressing pressure (Fig. 5), it can be seen that the yield of moisture increases with increasing pressing pressure. A more rapid increase in moisture output occurs with a pressure increase of up to 3.5 MPa, with a further increase in moisture output, it increases insignificantly. According to the plot of CB content versus pressing time (Fig. 6), it can be seen that in about 15 minutes at a pressure of 10.5 MPa, about 60% of moisture is pressed in the presence of 14 layers of pulp in the bag. Decreasing the pressing pressure to 1.75 MPa increases the pressing time, i.e. 50% of the moisture is pressed in 40 minutes. From the plot of content, CB, on the initial thickness of the bedding (Fig. 7), it can be seen, h, then with increasing bed thickness, the amount of moisture removed decreases. The greatest squeezing effect (up to 45–50% CB) is achieved with a layer thickness of 0.40, 7 cm. With a thickness of each layer.
    312
    equal to 1.5 cm, the pulp is pressed to a content of 35% ST.
    The temperature of the pulp during squeezing should be in the range of 50-60 ° C, i.e. The pulp should be pressed immediately after exiting diffusion, since at this time it has the highest temperature ().
    Example 1. Fresh beet pulp, coming from a diffusion apparatus and having a temperature of 50 ° C, is placed in two layers 0.4 cm thick between the pressing plates. Between each layer of pulp is placed on one filter element with a thickness of 0.5 mm and with drainage channels made on its surface. The filter element is made of polypropylene yarn. When slabs are closed, the pulp is pressed under a pressure of 0.1 MPa for 2.0 minutes.
    In the process of pressing, moisture easily passes to the filtering elements 2 and through the bypass channels of these elements leaves the package of pulp layers. These conditions make it possible to squeeze moisture from the pulp to a content of 35% CB in it.
    Example 2. Fresh beet pulp, coming from a diffusion apparatus and having a temperature, is placed in 100 layers with a thickness of 1.5 cm between the pressing plates. One filter element 0.5 mm thick with drainage channels formed on its surface is placed between each pulp layer. The filter element is made of polypropylene. When slabs are closed, the pulp is pressed under a pressure of 15.0 MPa for 60 minutes.
    Despite the presence of a larger number of branch channels in the package of layers of pulp and an increase in pressure, no significant increase in the moisture output from the pulp is observed. As the number of layers increases, only the power consumption for pressing increases.
    Example 3. Fresh beet pulp coming from a diffusion apparatus and having a temperature
    54
    , placed in 20 layers with a thickness of 0.70 cm between the pressing plates. Between each layer of pulp is placed on one filter element with a thickness of 0.5 mm with drainage channels made on its surface. The filter element is made of polypropylene. When plates are closed, the pulp is pressed under a pressure of 3.5 MPa for 4 minutes.
    With this number of layers of pulp, maximum moisture is removed through the bypass channels of the filter elements 2. The content of CB in the pressed pulp is 50%. Filter elements can also be made of another type of material that does not absorb moisture and has drainage channels on the surfaces.
    Thus, the application of the proposed method of removing the liquid phase from the pulp allows reducing the power consumption spent on the squeezing by more than 12 times and reducing the fuel consumption required for the subsequent drying of the pulp several times.
    权利要求:
    Claims (3)
    [1]
    1. A method of removing a liquid phase from a pulp, which involves squeezing the latter, characterized in that, in order to remove the liquid phase more completely, the initial volume of the pulp is placed in thin layers between the filter elements forming the bag, the number of layers being 2-100, The thickness of each layer is 4-15 mm, and the reaction is carried out under a pressure of from 0.1 to 15.0 MPa for 2-60 minutes.
    [2]
    2. A method according to claim 1, characterized in that the filter elements are made of polypropylene web.
    [3]
    3. The method according to claim 2, about tl and h and yu and the fact that the canvas filter elements made thick
    Oh, 5 mm.
    Vr
    I t /
    .O - V X ./ -i 5 ii .. - i. ,
    J xa- i: v44v: - -..- Xtr, .r ig.гJ /
    P, ffas
    yes: 5
    FIG. 6
    Su,% 55
    50 45 -40 J5
    0.5
    JU
    J1
    15 C / 7
    -I1L.
    CPU d. 7
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    同族专利:
    公开号 | 公开日
    EP0100270A1|1984-02-08|
    FR2530482B1|1985-08-09|
    AT22842T|1986-11-15|
    DE100270T1|1984-05-10|
    NO160902C|1989-06-14|
    DK162034C|1992-02-17|
    DK337483A|1984-01-24|
    DK337483D0|1983-07-22|
    DK162034B|1991-09-09|
    FR2530482A1|1984-01-27|
    NO160902B|1989-03-06|
    NO832572L|1984-01-24|
    DE3366866D1|1986-11-20|
    EP0100270B1|1986-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2542530C1|2013-08-13|2015-02-20|Андрей Михайлович Черников|Dried beet pulp production method|CH184685A|1935-11-15|1936-06-15|Bucher Guyer Ag Masch|Packing press for juice extraction.|
    DE1187929B|1957-03-16|1965-02-25|Klaus Probst|Pressed goods intermediate floor made of plastic for packing presses and basket presses|
    CH548219A|1971-03-12|1974-04-30|Willmes Josef Kg|WOVEN PRESSED CLOTH OR TAPE MADE OF TEXTILE, PLASTIC OR METAL THREADS FOR PRESSES FOR EXPRESSING LIQUID FROM A DAMP.|JPH0257962B2|1986-09-25|1990-12-06|Kurita Machinery Manuf|
    DE58908922D1|1988-04-14|1995-03-09|Hoppe & Partner|Process and device for dewatering sludge.|
    DE4013786C2|1990-04-28|1992-03-12|G. Siempelkamp Gmbh & Co, 4150 Krefeld, De|
    AT118174T|1990-11-30|1995-02-15|Hoppe & Partner|DEVICE FOR DRAINING SLUDGE.|
    SK482010A3|2010-05-11|2011-12-05|Pitonak Frantisek|Retractor belt press|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8212895A|FR2530482B1|1982-07-23|1982-07-23|PROCESS FOR THE EXTRACTION OF A LIQUID PHASE CONTAINED IN MATERIAL SIMILAR TO A PULP|
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