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    Method for stabilizing hydroisomerates
    1.
    发明授权
    Method for stabilizing hydroisomerates 失效
    稳定加氢异构体的方法

    公开(公告)号：US5158671A

    公开(公告)日：1992-10-27

    申请号：US283659

    申请日：1988-12-13

    申请人： Ian A. Cody ,  Donald T. Eadie ,  John M. MacDonald ,  Glen P. Hamner

    发明人： Ian A. Cody ,  Donald T. Eadie ,  John M. MacDonald ,  Glen P. Hamner

    IPC分类号： C10G65/04

    CPC分类号： C10G65/043

    摘要： A method is described for rendering total liquid product hydroisomerates daylight stable and improving their oxidation stability, which method involves treating the hydroisomerate total liquid product with a Group VIII metal on refractory metal oxide catalyst or Group VIII metal on halogenated refractory metal oxide catalyst under mild conditions, which conditions are a temperature in the range of 170.degree. to 270.degree. C., a pressure in the range of 300 to 1500 psi H.sub.2, 0.25 to 10 v/v/hr and 500 to 10,000 SCF/B,H.sub.2.

    摘要翻译： 描述了一种使总液体产物加氢异构体日光稳定并提高其氧化稳定性的方法，该方法包括在温和条件下在耐火金属氧化物催化剂或第VIII族金属上在卤代难熔金属氧化物催化剂上处理加氢异构体总液体产物与VIII族金属 ，这些条件是在170℃至270℃的范围内的温度，300至1500psi H 2的压力，0.25至10v / v /小时和500至10,000SCF / B的H 2。

    Method of brightening mechanical pulp using silicate-free peroxide bleaching
    3.
    发明授权
    Method of brightening mechanical pulp using silicate-free peroxide bleaching 失效
    使用无硅酸盐过氧化物漂白增亮机械纸浆的方法

    公开(公告)号：US5223091A

    公开(公告)日：1993-06-29

    申请号：US796951

    申请日：1991-11-25

    申请人： Bernard H. Hetzler ,  Donald T. Eadie ,  James K. Turnbull

    发明人： Bernard H. Hetzler ,  Donald T. Eadie ,  James K. Turnbull

    IPC分类号： D21C9/00 ,  D21C9/16

    CPC分类号： D21C9/004 ,  D21C9/163

    摘要： A method of brightening mechanical pulps by chelating and thickening to reduce the manganese content of the pulp to less than 30 parts per million and copper content less than 1 parts per million by adding ions preferably magnesium ions as magnesium sulphate MgSO.sub.4 in the amount of 400 to 3,000 ppm Mg ions retained by the pulp based on the oven dry weight of the pulp and thereafter applying a bleaching liquor composed of peroxide as hydrogen peroxide and an alkali as sodium hydroxide having a ratio of alkali to peroxide of between 1--1 and 2-1 in an amount to apply between 1 to 8 percent peroxide based on the oven dry weight of the pulp and containing no added sodium silicate. Preferably the bleaching liquor will contain magnesium sulphate in the amount of about 0.001 to 0.1% based on the oven dry weight of the pulp. The treated pulp is bleached in a bleaching tower for a sufficient time to obtain the desired degree of brightening and thereby produce a pulp having a brightness at least equivalent to that obtained by bleaching using a silicate stabilized bleaching liquor and the equivalent amount of peroxide.

    摘要翻译： 通过螯合和增稠来增加机械纸浆的方法，通过将离子优选镁离子作为硫酸镁MgSO 4，以400至500的量添加离子，将纸浆中的锰含量降低到百万分之30以下，铜含量低于百万分之1 基于纸浆的烘箱干重，由纸浆保留的3,000ppm Mg离子，然后将由过氧化物组成的漂白液作为过氧化氢和碱为碱金属与过氧化物的比例为1-1〜2- 1的量适用于1至8％的过氧化物，基于纸浆的干燥干重并且不加入硅酸钠。 优选地，基于纸浆的烘箱干重，漂白液将含有约0.001至0.1％的硫酸镁。 将经处理的纸浆在漂白塔中漂白足够的时间以获得所需的增亮度，从而产生至少与通过使用硅酸盐稳定的漂白液和等量的过氧化物漂白所获得的亮度相当的亮度的纸浆。

    Neutral papermaking
    4.
    发明授权
    Neutral papermaking 失效
    中性造纸

    公开(公告)号：US5505819A

    公开(公告)日：1996-04-09

    申请号：US220563

    申请日：1994-03-31

    申请人： James A. De Witt ,  Donald T. Eadie ,  Gordon R. Hayes ,  Robert E. Monahan

    发明人： James A. De Witt ,  Donald T. Eadie ,  Gordon R. Hayes ,  Robert E. Monahan

    IPC分类号： D21H11/08 ,  D21H23/10 ,  D21H21/06

    CPC分类号： D21H11/08 ,  D21H23/10 ,  Y10S162/11

    摘要： A pulp furnish containing predominantly wood-containing fibers (mechanical) and natural calcium carbonate as a filler is formed into a paper in a paper forming section of a paper machine at a neutral pH in the range of 6.7 to 7.5. Bentonite plus a suitable polymer such as a polyacrylamide produces a pulp stock that has exceptionally high drainage characteristics particularly when used with chalk as the filler. The pH of the stock in the headbox is maintained at the desired level of pH 6.7-7.3 by monitoring the pH in the headbox and adjusting the flow of pH reducing and buffering agent, preferably phosphoric acid, into the pulp prior to the headbox to obtain the desired pH in the stock.

    摘要翻译： 主要含木材纤维（机械）和天然碳酸钙作为填料的纸浆配料在造纸机的造纸部分中在6.7-7.5的中性pH下形成纸。 膨润土加上合适的聚合物如聚丙烯酰胺产生具有特别高排水性能的纸浆原料，特别是当与白垩作填料一起使用时。 流浆箱中原料的pH值通过监测流浆箱中的pH值并将pH降低和缓冲剂（优选磷酸）的流量调节到流浆箱之前的纸浆中，以保持在所需pH 6.7-7.3的水平，以获得 原料中所需的pH值。

    Membrane separation process
    7.
    发明授权
    Membrane separation process 失效
    膜分离过程

    公开(公告)号：US4995983A

    公开(公告)日：1991-02-26

    申请号：US496576

    申请日：1990-03-21

    申请人： Donald T. Eadie ,  Thomas M. Fyles

    发明人： Donald T. Eadie ,  Thomas M. Fyles

    IPC分类号： B01D61/02 ,  B01D61/04 ,  B01D61/58 ,  C01B15/013 ,  C02F1/44 ,  D21C9/16 ,  D21C11/00

    CPC分类号： D21C11/0028 ,  B01D61/022 ,  B01D61/04 ,  B01D61/58 ,  C01B15/013 ,  C02F1/441 ,  D21C9/163 ,  B01D2311/04 ,  B01D61/025 ,  B01D61/145 ,  C02F1/444

    摘要： It has been found that certain chemicals such as peroxide may be concentrated in an aqueous solution by increasing the pH of a feed liquor to increase the amount of the chemcial in an ionized form, i.e. increase the ionized fraction and then separating the feed liquor by reverse osmosis through a reverse osmosis membrane into a retentate having an enhanced concentration of chemical in ionized form relative to the feed liquor and a permeate having a reduced concentration of chemical in ionized form relative to the feed liquor. The process is particularly suited to increasing the concentration of hydrogen peroxide.

    摘要翻译： 已经发现，某些化学物质如过氧化物可以通过增加进料液的pH而浓缩在水溶液中，以增加离子化形式的化学物质的量，即增加电离部分，然后通过反向分离进料液 通过反渗透膜渗透成具有相对于进料液体具有离子化形式的化学浓度增加的渗余物和相对于进料液具有离子化形式的化学浓度降低的渗透物。 该方法特别适用于增加过氧化氢的浓度。