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1. 发明授权

US5536368A Method and apparatus for mixing a first medium to a second medium and a bleaching process applying said method 失效
标题翻译：用于将第一介质混合到第二介质的方法和装置以及应用所述方法的漂白方法
公开(公告)号：US5536368A
公开(公告)日：1996-07-16
申请号：US211793
申请日：1994-05-02
申请人： Mika P. Makela , Toivo Niskanen , Kari Peltonen
发明人： Mika P. Makela , Toivo Niskanen , Kari Peltonen
IPC分类号： B01F3/04 , B01F7/00 , D21C9/10 , D21C9/153
CPC分类号： B01F7/008 , B01F3/04468 , B01F3/04531 , D21C9/10 , D21C9/153 , B01F2003/04709
摘要： The present invention relates to a mixing of gas into a medium. The method and apparatus in accordance with the present invention are especially applicable in the bleaching plants of the wood processing industry for mixing gaseous bleaching chemicals into pulp and to bleaching process of pulp, in which the mixing method and apparatus in accordance with the present invention are applied. An excellent application is mixing ozone-containing gas into a fiber suspension flowing in a pipe line and an ozone bleaching process. The previously known methods and apparatuses have not been able to mix satisfactorily large volumes of gas, about 50% of the total volume of the flow, into the medium flow. In the method in accordance with the present invention the mixing is carried out in a strong shear force field efficiently and uniformly, whereafter the fiber network of the medium is allowed to form rapidly and in a controlled manner so that gas is not allowed to separate in the flow as bubbles, but remains in the plug flow in the fiber network.
摘要翻译： PCT No.PCT / FI92 / 00276 Sec。 371日期：1994年5月2日 102（e）日期1994年5月2日PCT提交1992年10月16日PCT公布。公开号WO93 / 07961 日期：1993年04月29日。本发明涉及将气体混合到介质中。根据本发明的方法和装置特别适用于木材加工工业用于将气体漂白化学品混入纸浆中的漂白设备和纸浆漂白工艺，其中根据本发明的混合方法和设备是应用。将含臭氧的气体混合到在管线中流动的纤维悬浮液和臭氧漂白过程中的一个很好的应用。以前已知的方法和装置不能将令人满意的大体积的气体（流体的总体积的约50％）混合到介质流中。在根据本发明的方法中，混合在有力和均匀的强剪切力场中进行，之后允许介质的纤维网络以受控的方式快速形成，使得不允许气体分离流动作为气泡，但保留在光纤网络中的插头流中。

2. 发明授权

US5258100A Minimizing gas separation in a mixer outlet 失效
标题翻译：在混合器出口中最小化气体分离
公开(公告)号：US5258100A
公开(公告)日：1993-11-02
申请号：US842326
申请日：1992-02-28
申请人： Toivo Niskanen , Brian F. Greenwood , Kari Peltonen , Stephen J. Dunn , Mika P. Makela
发明人： Toivo Niskanen , Brian F. Greenwood , Kari Peltonen , Stephen J. Dunn , Mika P. Makela
IPC分类号： B01F15/00 , D21C9/10 , D21C3/00
CPC分类号： B01F15/00824 , D21C9/10
摘要： A method and mixer are provided for mixing chemical (such as a gas like chlorine or oxygen) with a slurry (such as paper pulp having a consistency of about 1-16%) in such a way that separation of gas from the slurry at the discharge from the mixer is avoided. Where the mixer housing has a radial discharge, the leading and trailing walls of the discharge (in the direction of circular and tangential movement of slurry within the main body housing of the mixer) present curved configurations to transition the slurry from circular/tangential movement to radial movement. The curvature of the configurations (which may be provided by inserts) does not exceed an angle of about 10 degrees at any point along them until radial flow is established. Alternatively, the discharge may allow the tangential movement of the pulp in the main housing to continue by cutting off the original radial pulp discharge outlet, and welding or otherwise attaching a retrofit new discharge outlet to the main housing body similar to a pump volute with a gradually increasing cross-section.
摘要翻译：提供了一种方法和混合器（110），用于将化学物质（例如像氯气或氧气之类的气体）与浆料如稠度为约1-18％的纸浆混合，以使气体与浆料分离在离开混合器的放电（118）时避免了。在混合器壳体具有径向排放的情况下，排出物的前端（119）和尾部（120）壁（在混合器的主体壳体内的浆料的圆形和切线运动的方向）呈现弯曲构造（26,27 ）将浆料从圆形/切向运动转变为径向运动。构型（其可由插入物24,25提供）的曲率在沿着它们的任何点处不超过约10°的角度，直到建立径向流动。或者，排出口218可以允许主壳体211中的纸浆的切向运动通过切断原始径向纸浆排出口而继续，并且将改进的新排放口焊接或以其他方式附接到主壳体上 211）类似于具有逐渐增加的横截面的泵蜗壳。

3. 发明授权

US4975204A Method and apparatus for thickening fiber suspension 失效
公开(公告)号：US4975204A
公开(公告)日：1990-12-04
申请号：US216842
申请日：1988-07-08
申请人： Kaj O. Henricson , Mika P. Makela , Toivo Niskanen , Olavi E. Pikka , Vesa Vikman
发明人： Kaj O. Henricson , Mika P. Makela , Toivo Niskanen , Olavi E. Pikka , Vesa Vikman
IPC分类号： D21C9/18
CPC分类号： D21C9/18
摘要： The present invention relates to a method and apparatus for the continuous discharge of water from suspension, especially from fibrous pulp, whereby pulp is caused to thicken without having the water to be removed through a thick uncontrollably gathered fiber mat.In accordance with the invention the suspension to be thickened is fed into a filtering chamber, the suspension is formed as a layer that is continuously being mixed for equalizing the consistency differences, the liquid is continuously removed from the suspension and the thickness of the fiber mat being formed on the filter surface is controlled by subjecting said mat to shear stresses.The above described method is realized by an apparatus, in which at least one of the co-operating surfaces, the filtering surface (8) and its counter surface (10), is provided with means (12) for non-mechanically limiting the thickness of a fiber mat on the filtering surface, whereby a uncontrolled formation of a fiber mat on the filtering surface (8) is prevented.

4. 发明授权

US6071331A Method and apparatus for separating gas from a gaseous material 失效
标题翻译：从气态物质中分离气体的方法和装置
公开(公告)号：US6071331A
公开(公告)日：2000-06-06
申请号：US456699
申请日：1995-06-01
申请人： Toivo Niskanen , Kari Peltonen
发明人： Toivo Niskanen , Kari Peltonen
IPC分类号： B01D19/00 , D21C7/08 , D21D5/26
CPC分类号： D21C7/08 , B01D19/0052 , D21D5/26
摘要： Gas is separated from fluent material, particularly a liquid or a cellulose fiber suspension having a consistency of about 8-18%, utilizing a closed separation apparatus having a spiral housing with a central axis, a fluent material inlet channel, a fluent material outlet, and a gas outlet. A pressure differential is maintained between the inlet channel and the spiral housing, and the pressure differential is converted to kinetic energy of the fluent material by causing the fluent material to flow through one or more spiral flow paths through the inlet channel toward the spiral housing. In the spiral housing a rotor is rotated to impart a strong centrifugal force to the fluent material to cause gas to separate and collect adjacent the central axis of the spiral housing, from which the gas is removed. The strong centrifugal force caused by the rotating rotor discharges the fluent material through the outlet. The spiral flow paths rotate with the rotor in the spiral housing.
摘要翻译：气体与流动材料特别是具有约8-18％稠度的液体或纤维素纤维悬浮液分离，利用具有中心轴线的螺旋壳体的密闭分离装置，流动材料入口通道，流体物质出口，和气体出口。在入口通道和螺旋壳体之间保持压差，并且通过使流动材料流过穿过入口通道的一个或多个螺旋流动路径朝向螺旋壳体，将压差转换成流动材料的动能。在螺旋壳体中，旋转转子以向流动材料施加强大的离心力，以使气体在螺旋壳体的中心轴线附近分离和收集，气体从该外壳中除去。旋转转子产生的强力离心力通过出口排出流体物质。螺旋流动路径随着转子旋转在螺旋壳体中。

5. 发明授权

US5462585A Method and apparatus for separating gas from a gaseous material 失效
标题翻译：从气态物质中分离气体的方法和装置
公开(公告)号：US5462585A
公开(公告)日：1995-10-31
申请号：US182036
申请日：1994-01-14
申请人： Toivo Niskanen , Kari Peltonen
发明人： Toivo Niskanen , Kari Peltonen
IPC分类号： B01D19/00 , D21C7/08 , D21D5/26
CPC分类号： D21C7/08 , B01D19/0052 , D21D5/26
摘要： Gas is separated from fluent material, particularly a liquid or a cellulose fiber suspension having a consistency of about 8-18%, utilizing a closed separation apparatus having a spiral housing with a central axis, a fluent material inlet channel, a fluent material outlet, and a gas outlet. A pressure differential is maintained between the inlet channel and the spiral housing, and the pressure differential is converted to kinetic energy of the fluent material by causing the fluent material to flow through one or more spiral flow paths through the inlet channel toward the spiral housing. In the spiral housing a rotor is rotated to impart a strong centrifugal force to the fluent material to cause gas to separate and collect adjacent the central axis of the spiral housing, from which the gas is removed. The strong centrifugal force caused by the rotating rotor discharges the fluent material through the outlet. The spiral flow paths may be stationary or may rotate with the rotor in the spiral housing.
摘要翻译： PCT No.PCT / FI92 / 00216 Sec。 371日期1994年1月14日 102（e）日期1994年1月14日PCT提交1992年7月15日PCT公布。公开号WO93 / 01875 日期：1993年2月4日。使用具有中心轴的螺旋壳体的封闭分离装置，流动材料入口（流体材料入口），流体材料，特别是具有约8-18％稠度的液体或纤维素纤维悬浮液通道，流畅的材料出口和气体出口。在入口通道和螺旋壳体之间保持压差，并且通过使流动材料流过穿过入口通道的一个或多个螺旋流动路径朝向螺旋壳体，压差被转换成流动材料的动能。在螺旋壳体中，旋转转子以向流动材料施加强大的离心力，以使气体在螺旋壳体的中心轴线附近分离和收集，气体从该外壳中除去。旋转转子产生的强力离心力通过出口排出流体物质。螺旋流动路径可以是静止的或者可以随着转子旋转在螺旋壳体中。

6. 发明授权

US5000658A Apparatus for pumping high consistency fiber suspension 失效
标题翻译：用于泵送高稠度纤维悬浮液的装置
公开(公告)号：US5000658A
公开(公告)日：1991-03-19
申请号：US372526
申请日：1989-06-22
申请人： Toivo Niskanen
发明人： Toivo Niskanen
IPC分类号： D21C9/00 , B01F7/08 , D21B1/22 , F04B23/14 , F04D7/04
CPC分类号： F04D7/045 , B01F7/086
摘要： An apparatus for treating high-consistency fiber suspension is especially suitable for short distance conveyances of thick fiber suspensions (consistency more than 15%) in pulp and paper industry, for example for discharge of mass towers either with or without any actual pump. The treatment of fiber suspension with a consistency more than 15% is not possible with the known technique without a displacement type of pump, which is expensive and easy to break. Additionally, in discharging of the mass tower, drop leg, etc., fiber suspension causes trouble by arching in the container in such a way that it forms an open chamber around the pump located at the bottom of the container which chamber is slowly filled by fiber suspension. The problems are solved or minimized by arranging a feed apparatus in the pump chamber, which feed fiber suspension to a fluidizing rotor, for fluidizing the fiber suspension, whereafter the suspension flows onwards. The feeder apparatus raises the pressure of the fiber suspension sufficiently for the fluidization, not too high, in which case the operational members would be stressed redundantly. Fiber suspension is fed excessively to the rotor, whereby the feeding pressure of fiber suspension is controlled by throttling devices arranged separate from the feed apparatus in the back-circulation or passage.

7. 发明授权

US4964950A Method and apparatus for dividing and uniting the flows of high-consistency fibre suspensions 失效
标题翻译：用于分离和结合高浓度纤维悬浮液流动的方法和装置
公开(公告)号：US4964950A
公开(公告)日：1990-10-23
申请号：US898204
申请日：1986-08-20
申请人： Toivo Niskanen , Voitto Reponen
发明人： Toivo Niskanen , Voitto Reponen
IPC分类号： D21F1/00 , D21F1/06
CPC分类号： D21F1/06 , Y10T137/87249 , Y10T137/87877
摘要： A method and an apparatus for dividing and uniting flows of high-consistency fibre suspensions. To prevent clogging of the distributor the fibre suspension is caused to flow into a space unitting the inlet and the outlet flows, where a turbulent flow extending to the valves regulating the discharge flow is created. The distributor includes a vortex chamber provided with an inlet and outlets and with regulating valves connected to the outlets and disposed at a short distance from the outlets. According to a preferred embodiment of the the invention, a rotor provided with vanes is disposed in the vortex chamber.
摘要翻译： PCT No.PCT / FI86 / 00005 Sec。 371日期1986年8月20日 102（e）1986年8月20日PCT PCT 1月20日PCT PCT。出版物WO86 / 04369 日期1986年7月31日。一种高浓度纤维悬浮液流动分离和结合的方法和装置。为了防止分配器堵塞，使纤维悬浮液流入组合入口和出口流动的空间，其中产生延伸到调节排出流的阀的湍流。分配器包括设有入口和出口的涡流室，并且具有连接到出口的调节阀，并且与出口短距离地设置。根据本发明的优选实施例，设置有叶片的转子设置在涡流室中。

8. 发明授权

US5034120A Method for keeping a screen or filter surface clear 失效
标题翻译：保持屏幕或过滤器表面清洁的方法
公开(公告)号：US5034120A
公开(公告)日：1991-07-23
申请号：US463934
申请日：1990-01-08
申请人： Toivo Niskanen , Vesa J. Vikman
发明人： Toivo Niskanen , Vesa J. Vikman
IPC分类号： B01D29/46 , B01D29/17 , B01D29/25 , B01D29/37 , B01D29/62 , B01D29/64 , D21D5/02
CPC分类号： D21D5/026
摘要： A method for keeping a screen surface or a filter surface clean, wherein a pressure fluid is introduced from a conduit to a secondary side of a screen/filter drum, which fluid flows, during an underpressurized stage caused by blades of a rotor rotating on a primary side of the screen/filter drum, through the screen/filter drum from the secondary side to the primary side thereby rinsing the openings of the drum and making them clear.

9. 发明授权

US4834547A Apparatus for mixing chemicals in fibre suspensions 失效
标题翻译：用于在纤维悬浮液中混合化学物质的装置
公开(公告)号：US4834547A
公开(公告)日：1989-05-30
申请号：US62964
申请日：1987-03-10
申请人： Toivo Niskanen
发明人： Toivo Niskanen
IPC分类号： B01F5/12 , B01F5/16 , D21C9/00 , D21C9/10
CPC分类号： D21C9/10 , B01F5/16
摘要： The invention relates to an apparatus for mixing chemicals in fibre suspensions. The apparatus comprises a rotor (8) provided with blades and mounted to rotate in a casing (1) having an inlet (3) and an outlet (5) for the fibre suspension; and an inlet or inlets (6) for chemicals. The rotor (8) comprises a fluidizing and gas separating section (9), a pumping section (10) and a section (12) for mixing chemicals. An inlet (25) for chemicals leads to a space (24) between the pumping section (10) and the mixing section (12). The blades of the mixing section preferably cooperate with the casing wall (17) provided with ribs (18).
摘要翻译： PCT No.PCT / FI86 / 00080 Sec。 371日期1987年3月10日 102（e）1987年3月10日PCT PCT 1986年7月9日PCT公布。公开号WO87 / 00448 日本1987年1月29日。本发明涉及一种在纤维悬浮液中混合化学品的装置。该装置包括设置有叶片的转子（8），并安装成在具有用于纤维悬浮液的入口（3）和出口（5）的壳体（1）中旋转; 和用于化学品的入口或入口（6）。转子（8）包括流化和气体分离部分（9），泵送部分（10）和用于混合化学品的部分（12）。用于化学品的入口（25）通向泵送部分（10）和混合部分（12）之间的空间（24）。混合部分的叶片优选地与设置有肋（18）的壳体壁（17）配合。

10. 发明授权

US4884943A Method and apparatus for pumping high-consistency fiber suspension 失效
标题翻译：泵送高浓度纤维悬浮液的方法和装置
公开(公告)号：US4884943A
公开(公告)日：1989-12-05
申请号：US209634
申请日：1988-06-21
申请人： Toivo Niskanen
发明人： Toivo Niskanen
IPC分类号： D21C9/00 , B01F7/08 , D21B1/22 , F04B23/14 , F04D7/04
CPC分类号： F04D7/045 , B01F7/086
摘要： A method and an apparatus for treating high-consistency fiber suspension are especially suitable for short distance conveyances of thick fiber suspensions (consistency more than 15%) in pulp and paper industry, for example for discharge of mass towers either with or without any actual pump. The treatment of fiber suspension with a consistency more than 15% is not possible with the known technique without a displacement type of pump, which is expensive and easy to break. Additionally, in discharging of the mass tower, drop leg, etc., fiber suspension causes trouble by arching in the container in such a way that it forms an open chamber around the pump located at the bottom of the container which chamber is slowly filled by fiber suspension. The problems are solved or minimized by arranging a feed apparatus (31) in the pump chamber, which feeds fiber suspension to a fluidizing rotor (21), for fluidizing the fiber suspension, whereafter the suspension flows onwards. The feeder apparatus raises the pressure of the fiber suspension sufficiently for the fluidization, not too high, in which case the operational members would be stressed redundantly. Fiber suspension is fed excessively to the rotor (21), whereby the feeding pressure of fiber suspension is controlled by throttling devices (34) arranged separate from the feeder apparatus in the back-circulation or passage.

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