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    Treatment of effluents
    3.
    发明授权
    Treatment of effluents 失效
    污水处理

    公开(公告)号：US4360508A

    公开(公告)日：1982-11-23

    申请号：US243036

    申请日：1981-03-12

    Applicant: Frederick Farrington ,  Peter S. Clough

    Inventor： Frederick Farrington ,  Peter S. Clough

    IPC: B01D53/14 ,  B01D53/52 ,  B01D53/77 ,  C01B17/05 ,  C02F1/58 ,  C10G17/06 ,  C10G17/085 ,  C10K1/08 ,  C10K1/12 ,  C01B17/04 ,  C01B17/16 ,  C01D5/02

    CPC classification number: C10G17/085 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/1493 ,  B01D53/52 ,  C01B17/05 ,  C10G17/06 ,  C10K1/08 ,  C10K1/128

    Abstract: Soluble thiosulphates present in aqueous redox systems comprising at least one salt of an anthraquinone di-sulphonic acid and at least one water soluble compound of metal having at least two stable oxidation states, for example a vanadate, are converted to sulphates by introducing oleum or sulphuric acid into the lower half of a vessel containing said thiosulphate containing redox solution, wherein the sulphuric acid has a concentration of from 10-98% w/w H.sub.2 SO.sub.4 and the amount of said sulphuric acid is such that the gram molecular weight ratio of sulphuric acid to thiosulphate is from 1:2 to 1:3, and thereafter separating the sulphate formed for example by using a solubility lowering technique. The process is carried out at ambient temperature and at a temperature of from 70.degree. C. up to the boiling temperature of the acidic mixture.

    Abstract translation: 存在于包含至少一种蒽醌二磺酸盐和至少一种具有至少两种稳定氧化态的金属的水溶性化合物的例如钒酸盐的水溶性氧化还原体系中的可溶性硫代硫酸盐通过引入发烟硫酸或硫酸而被转化为硫酸盐 酸进入含有所述含硫代硫酸盐的氧化还原溶液的容器的下半部分，其中所述硫酸的浓度为10-98％w / w的H 2 SO 4，并且所述硫酸的量使得硫酸的克分子量比 至硫代硫酸盐的比例为1:2至1:3，然后分离形成的硫酸盐，例如通过使用溶解度降低技术。 该方法在环境温度和70℃至酸性混合物的沸点温度下进行。

    Remote indicator for diaphragm setting or the like
    4.
    发明授权
    Remote indicator for diaphragm setting or the like 失效
    用于膜片设置的远程指示器或类似物

    公开(公告)号：US3777640A

    公开(公告)日：1973-12-11

    申请号：US3777640D

    申请日：1972-06-02

    Applicant: SCHNEIDER CO OPTISCHE WERKE

    Inventor： HOLDERBAUM K

    IPC: C10K1/12 ,  G03B9/08 ,  G03B27/52 ,  G03B19/02

    CPC classification number: G03B27/52 ,  C10K1/128 ,  G03B9/08

    Abstract: A photographic objective, used for reproduction purposes in a darkroom, has an iris diaphragm whose control ring is mechanically coupled with a movable arm sweeping a contact arc inside the camera; the setting of the diaphragm can be read on an external indicator, connected to the contact arc and the arm through a cable, which includes a light box emitting filtered light to which the copying paper is insensitive. The contact arc, which may be a set of bank contacts or a continuous resistance, is carried on an insulating plate which may be removably seated in a slot of the camera housing with a plug-in connection.

    Abstract translation: 用于在暗室中进行再现的照相物镜具有虹膜光阑，其控制环机械地与可扫描机器连接，扫描相机内部的接触弧; 隔膜的设置可以在外部指示器上读取，外部指示器通过电缆连接到接触弧和手臂，该电缆包括发射复印纸不敏感的过滤光的灯箱。 接触弧可以是一组堤接触件或连续的电阻器，其承载在绝缘板上，该绝缘板可以通过插入式连接可拆卸地安置在相机外壳的槽中。

    Scrubbing of hydrogen sulphide using pH control to control thiosulfate formation
    6.
    发明授权
    Scrubbing of hydrogen sulphide using pH control to control thiosulfate formation 失效
    使用pH控制来洗涤硫化氢以控制硫代硫酸盐的形成

    公开(公告)号：US4434146A

    公开(公告)日：1984-02-28

    申请号：US406807

    申请日：1982-08-10

    Applicant: Guenter Weber

    Inventor： Guenter Weber

    IPC: B01D53/52 ,  C01B17/64 ,  C10K1/12 ,  B01D53/34 ,  C01B17/05

    CPC classification number: C01B17/64 ,  B01D53/52 ,  C10K1/128

    Abstract: In a process wherein hydrogen sulphide is removed from a gaseous mixture by scrubbing with an aqueous alkaline scrubbing solution containing an oxidizing agent, which process ordinarily results in a buildup of S.sub.2 O.sub.3.sup.-- ion, in order to reduce the rate of formation of S.sub.2 O.sub.3.sup.-- ions, the pH of the alkaline scrubbing solution is maintained at below 9 preferably at 8.0-8.5, with CO.sub.2 being preferably employed as the pH adjusting reagent.

    Abstract translation: 在通过用含有氧化剂的水性碱性洗涤溶液洗涤从气态混合物中除去硫化氢的过程中，该方法通常导致S2O3-离子的积聚，以便降低S2O3的形成速率 - 离子时，碱性洗涤液的pH值保持在9以下，优选8.0-8.5，优选使用CO 2作为pH调节剂。

    Suppressing decomposition of alkaline solutions of salts of anthraquinonedisulfonic acid
    7.
    发明授权
    Suppressing decomposition of alkaline solutions of salts of anthraquinonedisulfonic acid 失效
    抑制蒽醌二磺酸盐碱性溶液的分解

    公开(公告)号：US4355011A

    公开(公告)日：1982-10-19

    申请号：US256370

    申请日：1981-04-22

    Applicant: Gunter Weber

    Inventor： Gunter Weber

    IPC: B01D53/14 ,  B01D53/52 ,  B01D53/77 ,  C10K1/12 ,  B01D53/34

    CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/52 ,  C10K1/128

    Abstract: In the scrubbing of gases containing sulfur compounds with an aqueous alkaline solution of salts of anthraquinonedisulfonic acid, alkali sulfates are formed during a salt regeneration step, and these sulfates must be kept under a certain upper limit. This is accomplished by subjecting a partial stream of scrubbing solution to combustion under reducing conditions; however, thiosulfate is also removed, resulting ultimately in the decomposition of the anthraquinonedisulfonates. To overcome this drawback, the liquid product withdrawn from the combustion step is contacted with an oxygen-containing gas to convert alkali sulfides and/or alkali hydrogen sulfides contained therein to alkali thiosulfate, preferably in the presence of a catalytic amount of said salts of anthraquinonedisulfonic acid.

    Abstract translation: 在用蒽醌二磺酸盐的碱性水溶液洗涤含硫化合物的气体中，在盐再生步骤中形成碱性硫酸盐，并且这些硫酸盐必须保持在一定的上限。 这是通过使部分洗涤溶液流在还原条件下进行燃烧来实现的; 然而，硫代硫酸盐也被除去，最终导致蒽醌二磺酸盐的分解。 为了克服这个缺点，从燃烧步骤中取出的液体产物与含氧气体接触，以将其中所含的碱金属硫化物和/或碱金属硫化氢转化为碱金属硫代硫酸盐，优选在催化量的所述蒽醌二磺酸盐 酸。

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