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    Recovery and reuse of heavy-metal oxidation catalyst from the Witten DMT process
    2.
    发明授权
    Recovery and reuse of heavy-metal oxidation catalyst from the Witten DMT process 失效
    从Witten DMT工艺回收和再利用重金属氧化催化剂

    公开(公告)号：US4410449A

    公开(公告)日：1983-10-18

    申请号：US407619

    申请日：1982-08-12

    申请人： Karl-Heinz Diessel ,  Rudolf Modic ,  Friedrich Struss

    发明人： Karl-Heinz Diessel ,  Rudolf Modic ,  Friedrich Struss

    IPC分类号： C01G45/00 ,  B01J23/92 ,  B01J23/94 ,  B01J31/40 ,  B01J38/00 ,  C01G51/00 ,  C07C67/39 ,  B01J1/04 ,  C07C51/42 ,  C07C69/82

    CPC分类号： B01J31/04 ,  B01J23/92 ,  B01J31/4015 ,  B01J31/403 ,  C07C67/39 ,  B01J2231/70 ,  B01J23/00 ,  B01J2531/72 ,  B01J2531/845 ,  Y02P20/584

    摘要： A process for the recovery and reuse of a heavy-metal oxidation catalyst solution from a high-boiling distillation residue having a cobalt content of 1-10 g/kg of residue is disclosed. The distillation residue is obtained in the production of dimethyl terephthalate by the oxidation of mixtures containing p-xylene and/or methyl p-toluate in the liquid phase with oxygen or an oxygen-containing gas under an elevated pressure and at an elevated temperature in the presence of dissolved heavy-metal oxidation catalyst, by subsequent esterification of the oxidation product with methanol and by a distillatory separation of the esterification product into a fraction rich in methyl p-toluate, a fraction rich in dimethyl terephthalate, and the high-boiling distillation residue. The process involves the steps of effecting extraction of the heavy-metal oxidation catalyst from the high-boiling distillation residue with aqueous low-molecular aliphatic monocarboxylic acids under heating; treating the aqueous, acidic extract, which contains the heavy-metal oxidation catalyst and has a cobalt content with a strongly acidic cation exchange resin in the alkali metal form at an elevated temperature until the exchange capacity has been reached, and washing the cation exchange resin at an elevated temperature with water and regenerating the cation exchange resin at room temperature with a solution containing Na.sup.+ or K.sup.+ acetate to displace the catalyst components and to obtain an aqueous acetic acid catalyst solution containing the catalyst components.

    摘要翻译： 公开了一种重金属氧化催化剂溶液从钴含量为1-10克/公斤残留物的高沸点蒸馏残渣中回收和再利用的方法。 通过在液相中在氧气或含氧气体中在升高的压力下和在高温下氧化含有对二甲苯和/或对甲苯甲酸甲酯的混合物在生产对苯二甲酸二甲酯中获得蒸馏残余物。 存在溶解的重金属氧化催化剂，随后用甲醇对氧化产物进行酯化，并将酯化产物蒸馏分离成富甲苯甲酸甲酯，富含对苯二甲酸二甲酯的馏分和高沸点蒸馏 残留物 该方法包括在加热下用低分子量脂族单羧酸水溶液从高沸点残渣中萃取重金属氧化催化剂的步骤; 处理含有重金属氧化催化剂的水性酸性提取物，并在高温下与碱金属形式的强酸性阳离子交换树脂具有钴含量，直到达到交换容量，并洗涤阳离子交换树脂 在高温下用水，并在室温下用含有Na +或K +乙酸的溶液再生阳离子交换树脂以置换催化剂组分并获得含有催化剂组分的含水乙酸催化剂溶液。

    Method for loading resin beds
    3.
    发明授权
    Method for loading resin beds 失效
    装载树脂床的方法

    公开(公告)号：US4070438A

    公开(公告)日：1978-01-24

    申请号：US725078

    申请日：1976-09-21

    申请人： Karl J. Notz ,  Robert H. Rainey ,  Charles W. Greene ,  William E. Shockley

    发明人： Karl J. Notz ,  Robert H. Rainey ,  Charles W. Greene ,  William E. Shockley

    IPC分类号： B01J47/10 ,  C22B60/02 ,  B01J1/04 ,  B01J1/08

    CPC分类号： C22B60/0265 ,  B01J47/10

    摘要： An improved method of preparing nuclear reactor fuel by carbonizing a uranium loaded cation exchange resin provided by contacting a H.sup.+ loaded resin with a uranyl nitrate solution deficient in nitrate, comprises providing the nitrate deficient solution by a method comprising the steps of reacting in a reaction zone maintained between about 145.degree.-200.degree. C, a first aqueous component comprising a uranyl nitrate solution having a boiling point of at least 145.degree. C with a second aqueous component to provide a gaseous phase containing HNO.sub.3 and a reaction product comprising an aqueous uranyl nitrate solution deficient in nitrate.

    摘要翻译： 通过使负载H +的树脂与不足硝酸盐的硝酸铀酰硝酸盐溶液接触而提供的将负载有铀的阳离子交换树脂碳化来制备核反应堆燃料的改进方法包括通过包括以下步骤的方法提供硝酸盐缺乏溶液：在反应区 保持在约145℃-200℃之间，第一含水组分包含沸点至少为145℃的硝酸铀酰溶液和第二水性组分以提供含有HNO 3的气相和包含硝酸铀酰水溶液的反应产物 硝酸盐溶液不足。

    System for softening water
    4.
    发明授权
    System for softening water 失效
    软化水系统

    公开(公告)号：US4029576A

    公开(公告)日：1977-06-14

    申请号：US660303

    申请日：1976-02-23

    申请人： Ronald E. Shivers

    发明人： Ronald E. Shivers

    IPC分类号： C02F9/00 ,  B01J1/04

    CPC分类号： C02F9/00 ,  C02F1/283 ,  C02F2001/425 ,  C02F2103/023 ,  C02F2201/002 ,  C02F2209/03 ,  C02F2303/24 ,  C02F5/025 ,  C02F5/06

    摘要： A system for reducing the hardness of raw water to a level where it is suitable for circulation to a boiler wherein the water is converted to steam for generating power and subsequent use in equipment for building tires. The system employs, (i) a sedimentation tank in which a mixture of raw water, lime and soda ash is heated to cause the precipitation of calcium carbonate from the water as a sludge; (ii) a filter with a bed of coal for removing sludge which escapes with the water removed from the sedimentation tank; (iii) a softener with a resinous bed of sodium zeolite resin for further reducing the hardness of the water to a desired or tolerable level; and (iiii) a special filter or trap between the coal filter and zeolite softener for removing particles of coal carried along by the water as it flows through the coal filter, since the particles of coal eventually destroy the capacity and effectiveness of the zeolite softener.

    摘要翻译： 一种用于将原水的硬度降低到适于循环到锅炉的水平的系统，其中水被转换成蒸汽以产生动力并随后用于建筑轮胎的设备中。 该系统采用（i）沉淀池，其中加热原水，石灰和苏打灰的混合物，引起来自水的碳酸钙作为污泥沉淀; （ii）具有煤床的过滤器，用于除去从沉淀池中移出的水逸出的污泥; （iii）具有钠沸石树脂的树脂床的软化剂，用于进一步将水的硬度降低至所需或可耐受水平; 和（iii）煤过滤器和沸石软化剂之间的特殊过滤器或捕集器，用于在水流过煤过滤器时除去由水携带的煤颗粒，因为煤颗粒最终破坏了沸石软化剂的能力和有效性。

    High shear mixing apparatus for making silica gels
    6.
    发明授权
    High shear mixing apparatus for making silica gels 失效
    用于制造二氧化硅凝胶的高剪切混合装置

    公开(公告)号：US3709664A

    公开(公告)日：1973-01-09

    申请号：US3709664D

    申请日：1970-08-14

    申请人： NAT PETRO CHEM

    发明人： KREKELER J ,  WEHR C ,  ABOUTBOUL H

    IPC分类号： B01F7/18 ,  B01F15/06 ,  C01B33/154 ,  C01B33/16 ,  B01F7/20 ,  B01J1/04

    CPC分类号： B01F15/065 ,  B01F7/183 ,  C01B33/154 ,  Y10S516/93

    摘要： Apparatus comprising a rotary agitator possessing movable sets of flat blades interspersed with stationary sets of flat blades, the pitch and clearances of the blades being such that high shear agitation is obtained. This apparatus is suitable for use in the carrying out of any process requiring high shear mixing. It has been found to be particularly useful in the preparation of silica gels of high quality.

    摘要翻译： 装置包括旋转搅拌器，该旋转搅拌器具有散布有固定组的平面叶片的可移动平板组，叶片的间距和间隙使得获得高剪切搅动。 该装置适用于进行需要高剪切混合的任何工艺。 已经发现在制备高质量硅胶的情况下特别有用。

    Detergent builders and process for preparation thereof
    7.
    发明授权
    Detergent builders and process for preparation thereof 失效
    洗涤剂助洗剂及其制备方法

    公开(公告)号：US4238346A

    公开(公告)日：1980-12-09

    申请号：US896767

    申请日：1978-04-17

    申请人： Yujiro Sugahara ,  Koichi Usui ,  Masahide Ogawa ,  Hideaki Kurosaki ,  Shigehisa Imafuku

    发明人： Yujiro Sugahara ,  Koichi Usui ,  Masahide Ogawa ,  Hideaki Kurosaki ,  Shigehisa Imafuku

    IPC分类号： C01B3/28 ,  C01B39/14 ,  C01B39/18 ,  C11D3/00 ,  C11D3/12 ,  B01J1/04 ,  C01B33/28 ,  C02B1/44

    CPC分类号： C11D3/128 ,  C01B33/2815 ,  Y10S423/24

    摘要： A detergent builder consisting essentially of an inorganic fine powder composed mainly of an alkali metal aluminosilicate having an X-ray diffraction pattern substantially the same as that of zeolite of the type A and having a degree of crystallization in the range of from 35 to 75%, wherein the inorganic fine powder has a primary particle size smaller than 1.mu. and a secondary particle size smaller than 4.mu., the inorganic fine powder has a buffer capacity (S) of at least 132 ml/100 g of solids, the buffer capacity being expressed by an amount of hydrochloric acid necessary for lowering the pH of a 1% aqueous dispersion of said inorganic fine powder from 9.0 to 6.75 when the dispersion is titrated with 0.4 N hydrochloric acid at a rate of 20 to 50 ml/hr, and wherein the inorganic fine powder has a calcium ion binding property (C. I.) of at least 70 mg/g as expressed as CaO.

    摘要翻译： 一种洗涤剂助洗剂，其基本上由主要由碱金属硅铝酸盐组成的无机细粉末组成，其具有与A型沸石基本上相同的X射线衍射图，其结晶度为35-75％ 其中无机细粉末的一次粒径小于1μm，二次粒径小于4μm，无机细粉末的缓冲能力（S）为至少132ml / 100g固体，缓冲能力 当用0.4N盐酸以20至50ml /小时的速率滴定分散体时，将所述无机细粉末的1％水分散体的pH降低至9.0至6.75所需的盐酸量表示，以及 其中所述无机细粉末的钙离子结合性（CI）为CaO表示为至少70mg / g。