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66 条记录 (耗时 0.013 秒)

    Removal of lithium from polymer cements
    1.
    发明授权
    Removal of lithium from polymer cements 失效
    从聚合物水泥中去除锂

    公开(公告)号：US5847072A

    公开(公告)日：1998-12-08

    申请号：US652261

    申请日：1996-05-23

    申请人： Zaida Diaz ,  John David Wilkey

    发明人： Zaida Diaz ,  John David Wilkey

    IPC分类号： C04B41/60 ,  B01J39/04 ,  C08C2/04 ,  C08F6/00 ,  C08F6/02 ,  C08F6/08 ,  C08F6/24

    CPC分类号： B01J39/043 ,  C08C2/04 ,  C08F6/02

    摘要： The selectivity of ion exchange processes for the removal of lithium from acids is improved when weak acids such as citric and acetic, are used in the wash step. An added improvement is realized by a two stage process of contacting the acid solution first with an ion exchange resin functional to remove the nickel and aluminum compounds from the acid solution; and then contacting the acid solution with an ion exchange resin which is more selective to remove the alkali metal compound from the acid solution.

    摘要翻译： 在洗涤步骤中使用弱酸（如柠檬酸和乙酸）时，离子交换方法从酸中除去锂的选择性得到改善。 通过使酸溶液首先与用于从酸溶液中除去镍和铝化合物的离子交换树脂接触的两阶段方法实现了另外的改进; 然后使酸溶液与离子交换树脂接触，该离子交换树脂从酸溶液中除去碱金属化合物更具选择性。

    Reduction of diesel engine particulate emissions by contacting diesel fuel with a carbon molecular sieve adsorbent
    3.
    发明授权
    Reduction of diesel engine particulate emissions by contacting diesel fuel with a carbon molecular sieve adsorbent 失效
    通过将柴油燃料与碳分子筛吸附剂接触来减少柴油发动机的颗粒物排放

    公开(公告)号：US5300218A

    公开(公告)日：1994-04-05

    申请号：US902604

    申请日：1992-06-23

    申请人： Leonard B. Graiff ,  Peter B. Van Benthuysen ,  Danny Y. Ngan ,  Zaida Diaz ,  David M. Austgen, Jr.

    发明人： Leonard B. Graiff ,  Peter B. Van Benthuysen ,  Danny Y. Ngan ,  Zaida Diaz ,  David M. Austgen, Jr.

    IPC分类号： C10G25/00 ,  C10G25/05 ,  F02B3/06

    CPC分类号： C10G25/003 ,  C10G25/05 ,  F02B3/06

    摘要： This invention is a method for reducing the particulate emissions tendency of diesel fuel. Also the piston ring sticking, and deposit formation tendency of diesel fuel on the injector and combustion chamber of an internal combustion diesel fuel are reduced. The diesel fuel under the method of this invention is fed to at least one adsorbent bed in which the diesel fuel is contacted with one or more adsorbents under suitable process conditions such that there is a reduction in content of impurities in the fuel which cause the particulate emission causing tendency, piston ring sticking, and deposit formation tendency of the diesel fuel on the injector and/or combustion chamber.

    摘要翻译： 本发明是减少柴油的颗粒物排放趋势的方法。 而且内燃柴油燃料的喷射器和燃烧室上的活塞环粘附和柴油燃料的沉积形成趋势也减少。 将本发明方法的柴油燃料送入至少一个吸附剂床，在该吸附床中柴油燃料在合适的工艺条件下与一种或多种吸附剂接触，使得燃料中的杂质含量降低，导致颗粒物 排放引起趋势，活塞环粘附，以及柴油燃料在喷射器和/或燃烧室上的沉积物形成倾向。

    Removal of hydrogenation catalyst from polymer solutions by catalyzed precipitation
    4.
    发明授权
    Removal of hydrogenation catalyst from polymer solutions by catalyzed precipitation 失效
    通过催化降解从聚合物溶液中除去氢化催化剂

    公开(公告)号：US5212285A

    公开(公告)日：1993-05-18

    申请号：US537738

    申请日：1990-06-14

    申请人： Zaida Diaz ,  Carma J. Gibler

    发明人： Zaida Diaz ,  Carma J. Gibler

    IPC分类号： C08F6/08 ,  C08C2/04 ,  C08F6/00

    CPC分类号： C08C2/04

    摘要： A process is provided comprising the steps of contacting a Group VIII metal hydrogenation catalyst residue containing polymer solution with a chelating resin, the chelating resin comprising iminodiacetate ions, and recovering a polymer solution comprising less than 5 ppm by weight, based on the solution, of the hydrogenation catalyst residue metal. In a preferred embodiment, the chelating resin is contacted with the hydrogenation catalyst residue containing polymer solution by mixing particles of the chelating resin with the hydrogenation catalyst residue containing polymer solution under agitation, and the polymer solution containing less than 5 ppm of hydrogenation catalyst metals is recovered from the chelating resin and resulting precipitated hydrogenation catalyst residues by filtration.

    Glycerine purification process
    5.
    发明授权
    Glycerine purification process 失效
    甘油净化过程

    公开(公告)号：US4683347A

    公开(公告)日：1987-07-28

    申请号：US877051

    申请日：1986-06-23

    申请人： Zaida Diaz ,  James H. Miller

    发明人： Zaida Diaz ,  James H. Miller

    IPC分类号： C07C29/86 ,  C07C31/22

    CPC分类号： C07C29/86 ,  Y02P20/544

    摘要： The level of impurities such as glycerol-based acetals and/or ketals in glycerine, particularly glycerol-dimethylketal, is reduced by extraction of the glycerine with supercritical or near critical carbon dioxide.

    摘要翻译： 通过用超临界或近临界二氧化碳萃取甘油来减少甘油中甘油基缩醛和/或缩酮等杂质，特别是甘油二甲基缩酮的水平。

    Process for inhibiting hydrates while producing moist CO.sub.2 from subterranean reservoirs
    6.
    发明授权
    Process for inhibiting hydrates while producing moist CO.sub.2 from subterranean reservoirs 失效
    从地下水库产生潮湿的二氧化碳同时抑制水合物的过程

    公开(公告)号：US4597779A

    公开(公告)日：1986-07-01

    申请号：US706371

    申请日：1985-02-27

    申请人： Zaida Diaz

    发明人： Zaida Diaz

    IPC分类号： B01D53/26 ,  B01D53/14

    CPC分类号： B01D53/263

    摘要： In producing CO.sub.2 from subterranean reservoirs at conditions apt to cause two-phase flow in pipes conveying the fluid, the formation of hydrates is prevented by adding a polyhydric alcohol hydrate inhibitor in proportions capable of maintaining an effective concentration within the aqueous liquid-phase in spite of partitioning of the inhibitor into a CO.sub.2 -rich liquid-phase of many times greater volume.

    摘要翻译： 在从输送流体的管道中容易引起两相流动的条件下从地下储层中产生二氧化碳的情况下，通过加入多元醇水合物抑制剂可以防止在水相液相中保持有效浓度的比例 将抑制剂分配成更多体积的富含二氧化碳的液相。

    MULTI-STAGE MEMBRANE SEPARATION PROCESS
    10.
    发明申请
    MULTI-STAGE MEMBRANE SEPARATION PROCESS 有权
    多级隔膜分离工艺

    公开(公告)号：US20110041687A1

    公开(公告)日：2011-02-24

    申请号：US12811793

    申请日：2009-01-07

    申请人： Zaida Diaz ,  Henricus Abraham Geers ,  Ewout Martijn Van Jarwaarde ,  Arian Nijmeijer ,  Eric Johannes Puik

    发明人： Zaida Diaz ,  Henricus Abraham Geers ,  Ewout Martijn Van Jarwaarde ,  Arian Nijmeijer ,  Eric Johannes Puik

    IPC分类号： B01D53/22 ,  C10L3/10

    CPC分类号： B01D53/225 ,  B01D53/228 ,  B01D2256/24 ,  B01D2257/304 ,  B01D2257/306 ,  B01D2257/308 ,  B01D2257/504 ,  B01D2317/022 ,  C10L3/10 ,  C10L3/102 ,  C10L3/12 ,  Y02C10/10

    摘要： The invention concerns a process for the removal of gaseous acidic contaminants, especially carbon dioxide and/or hydrogen sulphide, in two or more stages from a gaseous hydrocarbonaceous feedstream (1) comprising hydrocarbons and said acidic contaminants, using one or more membranes in each separation stages. The gaseous hydrocarbonaceous feedstream is especially a natural gas stream. The process is especially suitable for feedstreams comprising very high amounts of acidic contaminants, especially carbon dioxide, e.g. more than 25 vol. %, or even more than 45 vol. %. In a first stage (2) a pure or almost pure stream of acidic contaminants is separated from the feedstream, the acidic contaminants (4) stream suitably containing less than 5 vol % of hydrocarbons. The remaining stream (3) comprises the hydrocarbons and still a certain amount of gaseous acidic contaminants. In a second stage (5) a pure or almost pure stream of hydrocarbons (8) is separated from the remaining stream, where after the then remaining stream (6) is combined with the feed for the first stage (1), the hydrocarbon stream suitably containing less than 5 vol % of acidic contaminants.

    摘要翻译： 本发明涉及一种从包含烃和所述酸性污染物的气态烃类进料流（1）在两个或多个阶段中除去气态酸性污染物，特别是二氧化碳和/或硫化氢的方法，其中在每个分离中使用一个或多个膜 阶段 气态烃类进料流特别是天然气流。 该方法特别适合于包含非常高量的酸性污染物，特别是二氧化碳的进料流，例如二氧化碳。 超过25卷 ％，甚至超过45体积。 ％。 在第一阶段（2），纯净或几乎纯净的酸性污染物流与进料流分离，酸性污染物（4）流适当地含有少于5体积％的烃。 剩余的流（3）包含烃和仍然一定量的气态酸性污染物。 在第二阶段（5）中，将纯的或几乎纯的烃类物流（8）与剩余物流分离，其中当然后的剩余物流（6）与第一级（1）的进料相结合时，烃流 适当地含有少于5体积％的酸性污染物。