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    Method for minimizing pulp mill effluents
    3.
    发明授权
    Method for minimizing pulp mill effluents 失效
    减少纸浆厂废水的方法

    公开(公告)号：US5374333A

    公开(公告)日：1994-12-20

    申请号：US922334

    申请日：1992-07-30

    申请人： Tuomo S. Nykanen ,  Brian F. Greenwood ,  Johan Gullichsen ,  Erkki Kiiskila ,  Esko Mattelmaki ,  Joseph R. Phillips ,  Jan Richardsen ,  Rolf Ryham ,  Jarmo Soderman ,  Karl G. Wiklund

    发明人： Tuomo S. Nykanen ,  Brian F. Greenwood ,  Johan Gullichsen ,  Erkki Kiiskila ,  Esko Mattelmaki ,  Joseph R. Phillips ,  Jan Richardsen ,  Rolf Ryham ,  Jarmo Soderman ,  Karl G. Wiklund

    IPC分类号： D21C9/10 ,  D21C11/00 ,  D21C11/12

    CPC分类号： D21C11/0021 ,  Y10S162/08

    摘要： Apparatus for a pulp and paper mill, and methods of acting on liquid effluents produced in the mill, which minimizes the discharge of polluting gaseous and liquid effluents to the environment. Liquid effluents from the bleach plant are concentrated (e.g. evaporated), incinerated (e.g. gasified), leached, crystallized (e.g. freeze crystallized) then washed, and then fed to the plant chemical recovery loop. White liquor produced from the recovery boiler melt is fully oxidized and used in place of caustic in the bleach plant. Essentially all sulfuric acid, sulfur dioxide, caustic, and chlorine dioxide necessary for the pulp mill is produced from mill liquid effluents and gas waste streams, on site at the pulp mill. Typical bleaching sequences that can be used are DE.sub.op D.sub.n D, or AZE.sub.o PZP.

    摘要翻译： 用于纸浆和造纸厂的设备，以及作用于在磨机中产生的液体流出物上的方法，其最大限度地减少污染的气态和液体流出物排放到环境中。 来自漂白设备的液体流出物被浓缩（例如蒸发），焚化（例如气化），沥滤，结晶（例如冷冻结晶），然后洗涤，然后进料至植物化学回收循环。 从回收锅炉熔体产生的白液被完全氧化并用于漂白设备中的苛性碱。 纸浆厂所必需的硫酸，二氧化硫，苛性碱和二氧化氯基本上都是从磨浆液流出物和废气流中产生的。 可以使用的典型漂白序列是DEopDnD或AZEoPZP。

    Method of managing liquid steams in a pulp mill
    6.
    发明授权
    Method of managing liquid steams in a pulp mill 失效
    在纸浆厂中管理液体蒸汽的方法

    公开(公告)号：US5302246A

    公开(公告)日：1994-04-12

    申请号：US25386

    申请日：1993-03-02

    申请人： Tuomo S. Nykanen ,  Jan T. Richardsen ,  Rolf Ryham

    发明人： Tuomo S. Nykanen ,  Jan T. Richardsen ,  Rolf Ryham

    IPC分类号： C01B7/01 ,  C01D1/04 ,  C01D3/04 ,  C01D5/00 ,  C01D7/00 ,  D21C11/00 ,  D21C11/06 ,  D21C11/10 ,  D21C11/12

    CPC分类号： D21C11/0021 ,  C01B7/01 ,  C01D1/04 ,  C01D3/04 ,  C01D5/00 ,  C01D7/00 ,  D21C11/00 ,  D21C11/0007 ,  D21C11/0028 ,  D21C11/066 ,  D21C11/10 ,  D21C11/12 ,  Y10S162/08

    摘要： In minimizing effluents from a cellulose pulp mill, liquid effluents from a bleach plant are concentrated, and then incinerated to produce a residue including sodium, sulfate, and sodium chloride. This residue is distilled with sulfuric acid to produce gaseous hydrogen chloride and remaining residue, the HCl being used in chloride dioxide production for the bleach plant, while the remaining residue is passed to the recovery loop (e.g. recovery boiler). Sulfur containing gases from the non-condensible gas system may be combusted to produce gaseous sulfur dioxide, which is then converted to sulfuric acid, to distill the residue. Where a non-chlorine bleach plant is provided, the liquid effluents may be concentrated in evaporators and then passed directly to the recovery boiler. The liquid streams in the mill are managed by a cascade principle to reserve the cleanest water for only those processes where it is needed while minimizing its use where it is not necessary.

    摘要翻译： 在使来自纤维素纸浆厂的流出物最小化的同时，将来自漂白设备的液体流出物浓缩，然后焚化以产生包括钠，硫酸盐和氯化钠的残余物。 该残余物用硫酸蒸馏以产生气态氯化氢和剩余残余物，HCl用于漂白设备的二氧化氯生产中，而剩余的残余物通过回收回路（例如回收锅炉）。 来自不可冷凝气体系统的含硫气体可以燃烧以产生气态二氧化硫，然后将其转化为硫酸以蒸馏残余物。 当提供非氯漂白设备时，液体流出物可以浓缩在蒸发器中，然后直接通入回收锅炉。 磨机中的液体流是通过级联原理进行管理的，以便在需要的地方只为那些需要处理的过程保留最干净的水，同时尽可能减少不必要的使用。

    Evaporator for liquid solutions
    7.
    发明授权
    Evaporator for liquid solutions 失效
    液体溶剂蒸发器

    公开(公告)号：US5246541A

    公开(公告)日：1993-09-21

    申请号：US699764

    申请日：1991-05-14

    申请人： Rolf Ryham

    发明人： Rolf Ryham

    IPC分类号： B01D1/06 ,  B01D1/30

    CPC分类号： B01D1/305 ,  B01D1/065

    摘要： A falling film evaporator includes a chamber having a top and bottom tube plate; a plurality of vertical tubes each having an interior and exterior surface and extending through the chamber and being supported by the top and bottom tube plates; an inlet at the chamber for feeding heating medium into the chamber; a distributor above the tubes for feeding liquid to be evaporated into the tubes and for causing the liquid to be distributed as a falling film along the interior surface of the tubes so as to evaporate the liquid and generate vapor as the liquid passes in heat exchanging relationship with a heating medium present at the exterior surface of the tubes; a vapor space defined by a circumferential wall below the tubes; a plurality of vertically elongated spaced elements having a substantially U-shaped cross-section with inwardly pointing vertical edges for receiving the evaporated liquid and the vapor, the elements being arranged in a circumferential wall below the tubes within the vapor space spaced from the wall of the vapor space and including a conical bottom; a drainpipe in the bottom for discharging the separated liquid into the vapor space and outlets in the vapor space for separately discharging the vapor and the liquid therefrom.

    摘要翻译： 降膜蒸发器包括具有顶部和底部管板的腔室; 多个垂直管，每个具有内表面和外表面并且延伸穿过所述室并由所述顶部和底部管板支撑; 在室中的入口，用于将加热介质供入到室中; 在管上方的分配器，用于将待蒸发的液体送入管中，并使液体沿着管的内表面作为降膜分布，以便当液体以热交换关系通过时蒸发液体并产生蒸汽 存在于管的外表面的加热介质; 由管下面的周壁限定的蒸汽空间; 多个垂直细长间隔的元件，具有基本上U形的横截面，其具有向内指向的垂直边缘，用于接收蒸发的液体和蒸气，所述元件布置在与壁的间隔隔开的蒸汽空间内的管的下方的圆周壁中 蒸气空间并包括锥形底部; 用于将分离的液体排放到蒸气空间中的排水管和蒸气空间中的出口，用于分别从其中排出蒸汽和液体。

    Method of concentrating black liquor by evaporation
    8.
    发明授权
    Method of concentrating black liquor by evaporation 失效
    通过蒸发浓缩黑液的方法

    公开(公告)号：US5133831A

    公开(公告)日：1992-07-28

    申请号：US244996

    申请日：1988-09-15

    申请人： Rolf Ryham

    发明人： Rolf Ryham

    IPC分类号： C02F1/02 ,  C02F1/04 ,  D21C11/00 ,  D21C11/04 ,  D21C11/10

    CPC分类号： D21C11/10

    摘要： A method of drying black liquor to a dry solids content of about 100% in which water is evaporated from the black liquor by direct heat exchange contact with hot smelt from a recovery furnace in which the dried black liquor is burned.

    摘要翻译： 将黑液干燥至约100％的干固体含量的方法，其中通过与干燥的黑液燃烧的回收炉的热熔体直接热交换接触从黑液中蒸发水。

    Process and apparatus for dehumidifying wet air
    9.
    发明授权
    Process and apparatus for dehumidifying wet air 失效
    用于除湿湿空气的方法和装置

    公开(公告)号：US5048200A

    公开(公告)日：1991-09-17

    申请号：US540083

    申请日：1990-06-19

    申请人： Rolf Ryham

    发明人： Rolf Ryham

    IPC分类号： B01D53/26 ,  D21F1/48 ,  D21F3/02 ,  D21F5/04 ,  D21F5/20 ,  D21F7/00 ,  F24F3/14 ,  F26B21/08 ,  F26B23/00

    CPC分类号： D21F1/48 ,  D21F5/046 ,  D21F5/20 ,  F24F3/1417 ,  F26B21/08 ,  F26B23/002 ,  F24F2003/144 ,  Y02P70/405

    摘要： Wet air preferably from a liquid ring pump is dehumidified by the use of a desiccant liquid absorber. The heat released by condensation of water vapor in the absorption liquid will be taken up by the air. The air is further heated by water vapor produced by regenerating the absorption liquid. According to a preferred embodiment of the invention, the source of the wet air is a suction box in the forming section, couch roll or pick-up roll of a paper machine and the hot air is used as pocket ventilation air in the dryer section of the paper machine.

    摘要翻译： 优选从液环泵的湿空气通过使用干燥剂液体吸收器进行除湿。 吸收液体中水蒸汽冷凝释放的热量将被空气吸收。 通过再生吸收液体产生的水蒸汽进一步加热空气。 根据本发明的优选实施例，湿空气源是造纸机的成型部分，卧铺辊或捡拾辊中的抽吸箱，并且热空气用作干燥器部分中的袋式通风空气 造纸机。

    Method for producing pulp
    10.
    发明授权
    Method for producing pulp 失效
    纸浆生产方法

    公开(公告)号：US4302281A

    公开(公告)日：1981-11-24

    申请号：US70501

    申请日：1979-08-28

    申请人： Rolf Ryham

    发明人： Rolf Ryham

    IPC分类号： D21C11/04 ,  D21C11/00

    CPC分类号： D21C11/0064 ,  Y02P40/44 ,  Y10S423/03

    摘要： In the production of pulp, the amount of ballast in the white liquor is reduced by maintaining the concentration of the green liquor, prior to causticizing thereof to convert it to the white liquor used for cooking the wood, at a level of 110.+-.20 grams per liter total titratable alkali counted as NaOH, maintaining the efficiency of the causticizing operation at 92.+-.3%, and concentrating the white liquor, prior to the cooking, by evaporation to a content of 130-200 grams per liter efficient alkali counted as NaOH.

    摘要翻译： 在生产纸浆时，通过保持绿液的浓度，在将其苛化之前将白液中的压载物的量转化成用于烹调木材的白液，其量为110 +/- 将20克/升总计可滴定碱计为NaOH，将苛化操作的效率保持在92 +/- 3％，并在蒸煮之前将白液浓缩至130-200克/升的含量 碱计为NaOH。