• 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 is related to a method for dispersing two phases in an extraction process so that each extraction step includes several mixing stages, and at each mixing stage the mixing is carried out by means of a vertical circulation and advantageously at least one mixing stage is provided with an intensified vertical circulation. According to the invention, the dispersing apparatus of one extraction step in an extraction process is formed of several mixers provided with circulation cylinders (11). Advantageously at least one of the mixers is provided with a dispersing pump (16).
    公开号:SU1540648A3
    申请号:SU864028571
    申请日:1986-11-27
    公开日:1990-01-30
    发明作者:Геран Ниман Брор；Хальтхольм Стиг-Эрик；Лео-Лилья Лауно；Йоханнес Мякитало Вальто
    申请人:Оутокумпу Ой (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a plant for dispersing two phases in an extraction process with a solution
    The purpose of the invention is to obtain high-quality dispersion and create a double-circuit distillation,
    FIG. 1 is a flowchart of the extraction process; in fig. 2 - mixers connected in series and participating in one stage of extraction, cross section; FIG. 3 shows the upper part of the mixer, in which the dispersion pump is located, second section; in fig. 4 is one of the recommended bonding methods for emulsion sensitive systems.
    FIG. 1 shows the first stages of processing a stream of the light fraction of a solution (in the direction of flow of this fraction); these processing steps are: extraction steps L, washing step B, and re-extraction steps C.
    The installation includes a storage tank 1, from which the light phase exits, a pre-mixer 2, to which chemical additives 3 are added, which directly enter the extraction solution of the light phase. The main part of the pre-mixed extraction solution 4 enters the first mixer 5 of the first stage or extraction stage. This solution also supplies a solution of the 6th heavy phase, so that at this stage of extraction both solutions will flow in the same or parallel direction. After exiting the first mixer 5, the dispersion enters the second mixer 7, and from here to the third 8. From the last flow, the dispersion passes to the precursor. 9 and further into the sump. 10. In the second and third stages of extraction or extraction, the light phase of the solution is withdrawn in a controlled manner from the pre-mixer, while the heavy phase of the solution passes from the first extraction stage to the second, and from the second to the third. In the second and third stages of extraction, only two mixers are used. The same amount of mixers is used in both the washing stage B1 and the re-extraction stage C. During the re-extraction and washing stages, the acid solution and the light phase stream flow into
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    coincident or parallel direction. In the case of installation at each stage of the extraction of several mixers, as provided by the invention, the industrial scale extraction process can be carried out with a smaller number of stages or stages of extraction.
    FIG. 2 shows in more detail the mixers of FIG. 1, and their compounds. The flow of the light phase solution 4 and the feeding solution of the 6th heavy phase are fed to the circulation cylinder 11, which is located in the lower part of the mixer, and more precisely in the conically tapered upper part of this cylinder. The dispersion in this case is carried out using a turbine pump 12, which is located in the central or upper part of the mixer. In the upper part of the first mixer, a horizontal shutoff or reflective wall 13 is installed. In the mixer itself, at about the same level at which the horizontal reflector wall 13 is located, a vertical tube 14 is placed, through which, as well, through pipe 15, the dispersion is fed to the next the mixer 7, more precisely, the dispersion is fed to the upper part of the circulation cylinder 11 of the mixer. The lower edge of the vertical tube 14 is located approximately halfway between the turbine and the horizontal baffle plate.
    The design of the second mixer 7 differs from the design of the first mixer in that in the second mixer 7 a dispersion pump 16 is installed above the turbine pump 12 and coaxially with it. The dispersion jet coming out of the turbopump is directed upwards and into the space bounded by the dispersion pump and the outer walls mixer That is why the flow of dispersion flows in a downward direction between the turbopump jets and from the lower part of the mixer through the circulation cylinder 11 in an upward direction to the lower part of the turbopump. By using the effective circulation in the form of a double loop formed in this case, the entire volume of the mixer, including its upper part, can be maintained and maintained under controlled dispersion conditions. In addition, in this case it is possible to introduce chemical additives directly into the dispersion jet, which is directed strictly upwards,
    In order to increase the efficiency of the mixer in case of treating it with a high or large volume of the solution flow while at the same time achieving a uniform mixing intensity, a dispersion pump 16 is installed in the mixer, in addition to the turbopump 12, which is located in the upper part of the mixer and on the same axis 16 with the turbine pump 12. The main and main function of the dispersion pump is to raise the dispersion flow to a level that is much higher than the surface of the liquid in the mixer. This is necessary about because both straight dotstoynike 9 and 10 in the sump liquid surface is also much higher than the liquid surface in smesite5406486
    tic factor in this case
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    You can use from 2 to 24 tubes. The diameter of the vertical tube is chosen so that the flow velocity of the medium through these tubes remains relatively low in the range from 0.1 to 0.5 m / s.
    Turbulence formed by the flow of the medium within the zone under consideration will usually be very small, so that the transfer will not reduce the size of the average drop.
    Through the vertical tubes 20, the dispersion is directly guided into a circular tube 23, which is connected to the vertical tubes. This circular tube serves as a separating phase for the centrifuge solution; within the annular or circular pipe, the flow is somewhat damped due to the partial collision of the substream outgoing from the vertical pipes. Dyspepsi is exited or discharged from
    thirty
    7. The dispersion pump 16 rotates 25 circular pipes 23 through a horizontal one with the same speed as the turbopump. Above the turbopump 12, a suction cylinder 18 is located. The suction port 19 of the suction cylinder 18 of the dispersion pump 16 is located quite close to the turbopump, slightly above the midpoint, but below the surface of the liquid. The vertical tubes 20 serving the dispersing pump are located within the suction cylinder, which is hermetically closed in its upper part. These vertical tubes are arranged so that they form an upwardly expanding cone, and the lower parts of these tubes are surrounded, in particular below the surface of the liquid, by cone-shaped plates, of which only one outer cone-shaped plate 21 is shown. In their upper parts, cone-shaped plates are elongated at least to a level that coincides with the surface of the liquid 22 in the mixer itself. The conical plates rotate at the same speed as the vertical tubes.
    There is a small slot that is located inside the annular tube at an angle of 20-40 ° relative to the highest point of this tube. It is not at all necessary that this horizontal slot is uniform along the entire length, instead of one uniform slot one can use several small slots located in that part.
    35 pipe which always remains between the vertical tubes.
    FIG. 3 it can be seen that above the circular pipe 23, an annular (plate) washer 40 24 which surrounds this circular pipe and causes the dispersion exiting the circular pipe to pass between said annular washer 24 and the circular pipe is installed in an inclined position. BUT.,
    45, a narrow element 25 (treyhold) is installed on the edge of the circular pipe 23, which is inclined downward and the outer surface of which is parallel to the annular washer. The main function of this narrow element 25 is to divert the dispersion flow as far as possible from the circular pipe. Ring-shaped washer 24 and narrow element 25 are located relative to each other
    The rising angle of the vertical tubes is selected according to the size of the installation and the speed of rotation. It is recommended to choose this angle in the range from 30 to 60. The number of vertical tubes is not a cree.
    circular pipe 23 through horizontal
    There is a small slot that is located inside the annular tube at an angle of 20-40 ° relative to the highest point of this tube. It is not at all necessary that this horizontal slot is uniform along the entire length, instead of one uniform slot one can use several small slots located in that part.
    pipe which always remains between the vertical tubes.
    FIG. 3, it can be seen that above the circular tube 23, the washer 24 which surrounds this circular tube and causes the dispersion exiting the circular tube to pass between said annular washer 24 and the circular tube is installed in an inclined position. .
    The edge of the circular pipe 23 is set to a narrow element 25 (treyhold), which is inclined downward and the outer surface of which is parallel to the ring-shaped washer. The main function of this narrow element 25 is to divert the dispersion flow as far as possible from the circular pipe. Ring-shaped washer 24 and narrow element 25 are located relative to each other
    so as to direct the dispersion flow out of the circular pipe downward at an angle of about 45 °.
    The installation works as follows.
    The dispersion flow leaving the circular tube 23 is directed to the upper chamber of the mixer, where the dispersion enters the collection tray, which passes around the perimeter of the upper chamber of the mixer. 1, the outer surface of the collecting tray 26 is located above the surface located in the liquid mixer 22. The outer surface 27 of the collecting tray 26 simultaneously serves as the surface of the mixer cylinder. The inner surface 28 of the collecting tray can be designed so that it is parallel to the outer surface in its lower part, and parallel to the vertical tubes 20 of the dispersion pump in its upper part. In addition, a surface 29 is formed here which slopes from the outer surface of the collecting tray towards the inner surface of this non-tray to receive the dispersion — with the lower portion of the surface 29 continuing in the form of an inwardly curved brake surface 30. As As noted above, a flexible and gentle processing of the dispersion is a very important factor in successfully eliminating the danger of emulsification. That is why the installation design includes a surface 29 inclined at a certain angle, which softens the impact of the dispersion emerging from the circular pipe. The brake surface 30 is used to slow down the dispersion flow, because at the time the dispersion passes over this brake surface, it has to overcome the centrifugal force that is still active here. If the extraction reaction proceeds slowly, then it is possible to refuse to use the braking surface, and in this case the collection tray functions as an extension of the mixer, since even when it is in the collection tray, the dispersion still continues to be in a vortex motion.
    FIG. 2 that the internal circulation of the solution at the extraction stage proceeds from the sump 10 into the second mixer 7, i.e. it takes place through the pipeline for the easy phase 31 and the pipeline for the heavy phase 32 and to the top of qi Q $ 0 5 0 5 Q
    five
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    lindra circulation. All these operations are controlled by the respective valves 33 and 34. In this case, it is possible to make the second and third mixers simultaneously the desired phase in a dispersed state. This is achieved due to the fact that in the first mixer the stimulating forces of extraction are maintained at the highest possible level. Thus, the feed to the first mixer is not diluted as a result of using the circulation of the settling tank, which has already been diluted with respect to the component that is to be extracted, however, the circulation of the settling tank is directed to another mixer.
    FIG. 2 also shows that the feed of the light phase 35 from another extraction stage is directed to the liquid surface of the second mixer. FIG. Figure 2 does not show the delivery of the heavy phase from the washing step, however it pours directly into the circulation cylinder.
    At the stages of preparing the equipment for commissioning, a pipeline for withdrawing heavy phase 32 is also used, which moves away from the same stage or stage of extraction. The pipeline for withdrawing the heavy phase, which is connected to the corresponding piping system of the dispersion pump, ensures the operation or normal circulation of the double loop, which is an important point in the normal operation of the mixer. Differences in the specific gravity of the solutions used can cause a situation in the upper part of the mixer there is some part of the light phase, and at the bottom of the same mixer there is some part of the heavy phase. These incomplete mixing zones can act as obstacles that prevent the normal circulation in the mixer from starting up. In this situation, the dispersion pump delivers a relatively larger amount of light phase to the sump, and some of the heavy phase is returned through the return line to the mixer. After a short operation of the installation described, a sufficient amount of the heavy phase of the solution passes into the turbine (turbopump) of the mixer through the circulation cylinder, due to which it is possible to start the double loop circulation. It is recommended by valve 34 to continuously support the return of a slightly heavy phase.
    From the collecting tray 26, the dispersion through the pipe 36 enters the third mixer. The latter is identical to the first mixer in its design and type. The upper chamber of the third mixer is provided with a horizontal baffle, on or along the axis of which a cuff or collar 37 is installed, which eliminates the likelihood of the dispersion to reverse. On the opposite side of this mixer (with respect to the vertical tube 14) there is a hole (not shown) through which the dispersion flows freely into the preliminary settler 9. Due to this arrangement, the dispersion stream is forced to pass over the entire horizontal reflective partition 13 and already at this stage partial phase classification. The horizontal reflective partition of the third mixer is located at the same level as the surface of the dispersion in the collection tray of the second mixer or slightly lower. That is why in this case there is no need to pump the dispersion into the third mixer and the rotational speed of the turbopump of the third mixer can be reduced even more.
    By installing three mixers in accordance with the present invention, it is possible to maintain the rotational speed of the first turbopump at a level higher than the rotational speed of the second turbopump, which is especially important and has a positive effect in cases where an intensive extraction process causes the formation of an antidispersive effect that is directly related or due to mixing movements at the interface. Therefore, it is recommended to increase the rotational speed if the extraction process involves the mandatory introduction of some kind of chemical additive, which should be mixed in the process of carrying out this process as quickly as possible. All chemical additives and circulations that are necessary to increase the efficiency of the pro10
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    The dispersion process is introduced and carried out in the first and second mixers, and that is why the rotation speed of the third mixer turbopump can be reduced even more compared to the rotation speed of the second mixer turbopump, and in this case the phases are still in good dispersion nii.
    In those cases when strict extraction and control of the type of dispersion is absolutely necessary in all the mixers of the extraction stage, the most promising practice is to install a dispersion pump in the first mixer and to install a horizontal baffle plate in the second and third mixers. The return flows from the settling tank flow into the first mixer, where the correct phase is maintained in the dispersion state — the correct phase according to or in relation to the specific situation. It is preferable to arrange the horizontal baffle plate in the second and third mixers at the same level at which the dispersion surface is deposited in the dispersion tray of the first mixer. The overflow or overflow threiold (treshold) of the collection tray of the settler is installed at the same level or slightly lower than the installation level of the horizontal reflective partitions of the above mixers so as not to endanger or doubt the sufficient capacity of the devices for receiving solutions at the extraction stages, which are connected according to the principle backflow.
    At the second and third stage of the extraction stage of the extraction (Fig. 1), as well as at the washing stage and at the re-extraction stage, two mixers are used for each stage. In these cases, the first mixers are supplied with a dispersion pump, and the second mixers are supplied with horizontal baffles. Internal circulations at any stage are supplied to the first mixer and to the upper part of the circulation cylinder. However, the light phase coming out of the adjacent stage is fed to the surface of the liquid of the first mixer, where the solution goes into free flow, since in this case
    In addition, the dispersion pump reduces the surface of the liquid. In this case, the rotational speed of the turbopump in the second mixer can be reduced to a level that cannot be achieved if only one mixer is used. In addition, in this case, the dispersion is transferred from the collecting tray through the jQ out mixers to a limited part of the circulation cylinder of the next mixer, where, due to the suction effect, the flow of dispersion between the mixers is ensured even at low speeds of rotation of the turbopump.
    The device design shown in FIG. 4 is particularly effective in processing extensive and exclusive JQ.
    emulsion sensitive systems
    15
    25
    thirty
    but
    solution. FIG. 4 shows that the mixer unit includes a pre-mixer 38 and a pre-mixer 39, equipped with a horizontal baffle plate. The required chemical additives are introduced into the pre-mixer, and the return flows, which are necessary to maintain and maintain the desired type of dispersion, come from a sump of the same stage or step. The streams of solution leaving the adjacent extraction stages are directed as described: the heavy phase is directed to the upper part of the circulation cylinder, and the light phase is directed to the surface of the liquid. Since the prrd mixer used in this case is much smaller in size than the main mixer, it is possible to use lower rotational speeds of the turbopump and significantly reduce the risk of emulsification, which is usually associated with solution dispersion. After pre-dispersing, the dispersion in the main mixer can be maintained in the desired state at a relatively low speed of rotation of the turbopump.
    154064812
    a turbine pump installed above the circulating cylinder, a preliminary settler and a settler, the mixer being connected to the settler of the same extraction stage by a heavy phase return pipe and a light phase return line, characterized in that, in order to obtain high-quality dispersion, at least one of the mixers is provided with a dispersion pump, and the heavy phase pipelines and the light phase pipe are connected to the upper part of the circulation cylinder,
    2. Installation according to claim 1, characterized in that the mixers are connected in series.
    3. The installation according to claim 1, characterized in that the first of the two mixers is smaller in dimensions of the second,
    4. Installation according to claim 1, characterized in that, in order to obtain high-quality dispersion and create double-circuit circulation, the pump for dispersion of each mixer is installed coaxially with the turbine pump in its middle or upper part, and the suction inlet is located above the middle part of the turbine pump, The installation is equipped with a suction cylinder closed at the top by at least two ascending tubes, conical plates, the lower end of which is installed under the surface of the liquid, and the upper end at least at the level of the liquid surface STI in a mixer, wherein the ascending pipe are provided with circular connecting pipe and a collecting trough positioned above liquid surface
    in the mixer.
    5. Installation according to claim 4, characterized in that the circular pipe is provided with at least one horizontal slot, which is located on the inner side of the circular pipe.
    35
    50
    howl pipe at an angle of 20-40 from the highest point of the pipe,
    Formula
    1. A plant for dispersing two phases in an extraction process with a solution comprising at least two mixers, each of which contains a circulation cylinder located at the bottom of the mixer,

    howl pipe at an angle of 20-40 from the highest point of the pipe,
    6 .. The installation according to paragraph 4, about 1 t and - with the fact that on the outer edge of the circular pipe there is an inclined down element,
    7. Installation according to claim 4, characterized in that it is provided with an annular washer installed above the circular pipe in an oblique direction.
    8. Installation according to claim 4, characterized in that 9, the collecting chute in the upper part is made with
    inclined surface directed inward.
    9. Installation according to claim 4, about tl and - with the fact that the bottom i; a portion of the inclined surface continues as an inward curved brake surface.
    1
    eight
    2
    权利要求:
    Claims (9)
    [1]
    Claim
    1, An apparatus for dispersing two phases during a solution extraction process, comprising at least two mixers, each of which comprises a circulation cylinder located at the bottom of the mixer, a turbine pump mounted above the circulation cylinder, a pre-sump and a sump, the mixer connected to a sump the same extraction stage with a multiple heavy phase pipe and a light phase return pipe, characterized in that 10, in order to obtain a high-quality dispersion, enshey least one of the mixers is provided with a pump for the dispersion, and the heavy phase piping and a light phase conduit 15 connected to the upper part of the circulating cylinder.
    [2]
    2, Installation according to p. ^ Characterized in that the mixers are connected in series.
    2θ
    [3]
    3. Installation according to π. 1, characterized in that the first of the two mixers is smaller in size of the second.
    [4]
    4. Installation according to π, 1, according to the fact that, in order to obtain high-quality dispersion and create a bypass circulation, the dispersion pump for each mixer is installed coaxially with the turbine 20 pump in its middle or upper part, and the suction inlet is located above the middle part of the turbine pump, the installation is equipped with a suction cylinder, closed on top of at least two ascending pipes, which
    35 vane plates, the lower end of which is installed below the surface of the liquid, and the upper - at least at the level of the surface of the liquid in the _ mixer, while the ascending pipes
    40 'provided with a connecting circular pipe and a collecting trough located above the surface of the liquid in the mixer,
    45
    [5]
    5. Installation according to claim 4, characterized in that the circular pipe is provided with at least one horizontal slot, which is located on the inner side of the circular pipe at an angle of 20-40 ° from the highest point of the pipe,
    [6]
    6. Installation according to claim 4, characterized in that an downwardly inclined element is installed on the outer edge of the circular pipe,
    [7]
    7. Installation according to p. 4, characterized in that it is weak
    1540643 wife installed over an annular pipe in an oblique direction an annular washer.
    Installing the key in the upper part
    4, about t l and that the prefabricated is made with
    [8]
    8.
    tea gutter with an inclined surface directed inward.
    [9]
    9. Installation pop, 4, characterized in that the lower <<· part of the inclined surface continues in the form of an inwardly curved brake surface.
    Fig. H
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    同族专利:
    公开号 | 公开日
    DE3640655A1|1987-06-04|
    BR8606110A|1987-09-15|
    IT1198137B|1988-12-21|
    ES2003558A6|1988-11-01|
    IT8622408D0|1986-11-20|
    FI73147C|1987-09-10|
    FI854726A0|1985-11-28|
    CA1298961C|1992-04-21|
    BE905834A|1987-03-16|
    CN1005822B|1989-11-22|
    DE3640655C2|1990-05-23|
    FI73147B|1987-05-29|
    AU588649B2|1989-09-21|
    FR2590497B1|1990-11-23|
    CN86107681A|1987-05-27|
    US4786187A|1988-11-22|
    FR2590497A1|1987-05-29|
    AU6551186A|1987-06-04|
    引用文献:
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    CA1048493A|1973-11-26|1979-02-13|Joseph Mizrahi|Centrifugal impeller type liquid-liquid mixer with means for forced recirculation|
    US3989467A|1974-05-24|1976-11-02|Holmes & Narver, Inc.|Apparatus for contacting immiscible fluids|
    US4203956A|1976-02-10|1980-05-20|Hoechst Aktiengesellschaft|Process and apparatus for recovering alcoholic phosphoric acid solutions from acid phosphates|
    DE2710241C2|1976-03-11|1989-08-03|Krebs & Cie., Paris, Fr|
    FI57059C|1978-06-28|1980-06-10|Outokumpu Oy|EXTRAKTIONSENHET FOER VAETSKE-VAETSKE-EXTRAKTION|
    US4357110A|1979-09-17|1982-11-02|Hope Henry F|Mixing apparatus|
    US4358206A|1980-12-30|1982-11-09|General Signal Corporation|Draft tube apparatus|
    FI70800C|1983-05-12|1986-10-27|Outokumpu Oy|SAETT ATT DISPERGERA TVAO FASER VID VAETSKE-VAETSKEEXTRAKTION OCH CIRKULATIONDISPERSIONSKONTAKTOR FOER GENOMFOERANDE AV SATTET|
    US4545901A|1983-10-24|1985-10-08|Schneider John C|Liquid-liquid extraction process|
    US4551314A|1984-04-11|1985-11-05|Amax Inc.|Process for improving solvent extraction operation using two mixers|FI88773C|1990-04-04|1993-07-12|Outokumpu Oy|SAETT ATT BLANDA IHOP OCH SEPARERA TVAO LOESNINGSFASER SAMT APPARATUR FOER DETTA|
    DE4023948A1|1990-07-27|1992-01-30|Pfister Gmbh|PLANT FOR CONTINUOUS, PNEUMATIC GRAVIMETRIC CONVEYING AND / OR MIXING OF SCHUETTGUETE|
    US5511881A|1995-01-06|1996-04-30|General Signal Corporation|Impeller system and method for enhanced-flow pumping of liquids|
    US5501523A|1995-01-06|1996-03-26|General Signal Corporation|Impeller system for mixing and enhanced-flow pumping of liquids|
    FI101200B1|1996-05-07|1998-05-15|Outokumpu Oy|Method and apparatus for conducting two liquid-liquid extraction solutions mixed into a dispersion in a controlled manner into a separation space|
    US20010036126A1|2000-03-07|2001-11-01|Ye-Mon Chen|Stepwise mixing intensity reduction and mixer/settler separation process|
    KR100721050B1|2005-01-17|2007-05-23|미쓰이 가가쿠 가부시키가이샤|Liquid-liquid extracting method|
    FI121470B|2009-03-27|2010-11-30|Outotec Oyj|Apparatus and method for purifying a copper-containing organic leach solution from impurities|
    CN104874201A|2014-02-27|2015-09-02|浦华环保有限公司|Combined centrifugal extractor|
    FR3036974B1|2015-06-04|2019-09-13|Technip France|MIXING-SEPARATION INSTALLATION OF NON-MISCIBLE LIQUIDS|
    CN105478048A|2015-12-08|2016-04-13|无锡万能胶粘剂有限公司|Multi-purpose adhesive glue processing and stirring device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI854726A|FI73147C|1985-11-28|1985-11-28|SAETT ATT DISPERGERA TVAO FASER VID VAETSKE-VAETSKE-EXTRAKTION SAMT ANORDNING FOER GENOMFOERANDE AV SAETTET.|
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