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    Method for producing zinc bromide
    4.
    发明授权
    Method for producing zinc bromide 有权
    生产溴化锌的方法

    公开(公告)号：US06036937A

    公开(公告)日：2000-03-14

    申请号：US195761

    申请日：1998-11-18

    申请人： Weyman H. Dunaway ,  David J. Hanlon ,  Lyle H. Howard ,  Jeffrey S. McKennis ,  Raymond D. Symens

    发明人： Weyman H. Dunaway ,  David J. Hanlon ,  Lyle H. Howard ,  Jeffrey S. McKennis ,  Raymond D. Symens

    IPC分类号： C01G9/04 ,  C01B9/04

    CPC分类号： C01G9/04

    摘要： A method for making zinc bromide from metallic zinc and bromine comprising contacting zinc with bromine dissolved in a reaction solvent containing a metal halide salt. During the practice of this method, the reaction temperature is maintained at less than 60.degree. C. The reaction solvent preferably comprises an alkali, alkaline earth or transition metal halide and the halide salt preferably comprises a chloride or a bromide. One preferred method includes the step of recirculating the zinc bromide product stream back to the reaction vessel. The reaction vessel can comprise either a one stage or a multiple stage reactor. The resulting product stream comprises a high density zinc bromide solution.

    摘要翻译： 一种从金属锌和溴制造溴化锌的方法，包括使锌与溶于含有金属卤化物盐的反应溶剂中的溴接触。 在该方法的实践中，反应温度保持在低于60℃。反应溶剂优选包含碱金属，碱土金属或过渡金属卤化物，卤化物盐优选包括氯化物或溴化物。 一种优选的方法包括将溴化锌产物流再循环回反应容器的步骤。 反应容器可以包括一级或多级反应器。 所得产物流包含高密度溴化锌溶液。

    Process for the manufacture of potassium nitrate
    5.
    发明授权
    Process for the manufacture of potassium nitrate 失效
    制造硝酸钾的方法

    公开(公告)号：US4378342A

    公开(公告)日：1983-03-29

    申请号：US249355

    申请日：1981-03-31

    申请人： Shalom Manor ,  Moshe Bar-Guri ,  Amiad Alexandron ,  Moshe Kreisel

    发明人： Shalom Manor ,  Moshe Bar-Guri ,  Amiad Alexandron ,  Moshe Kreisel

    IPC分类号： C01B7/03 ,  C01B7/01 ,  C01B9/04 ,  C01B21/46 ,  C01D9/04

    CPC分类号： C01D9/04

    摘要： The present invention relates to a process for the manufacture of potassium nitrate from potassium chloride and nitric acid. According to the invention, potassium chloride and nitric acid are reacted in an aqueous medium at a temperature in the range of between -25.degree. C. to +10.degree. C. From the brine solution obtained after the separation of the resulting potassium nitrate, nitric acid is extracted by an organic solvent solution containing at least one compound selected from the group consisting of ketones having five to ten carbon atoms, straight or cyclic polyethers having molecular weight in the range of 100 to 1000, polyalkylene glycols slightly miscible in water and having molecular weight in the range of 1000 to 3000, and organic esters of phosphoric acid, phosphonic acid and phosphinic acid, or mixtures thereof, in an organic diluent which does not substantially extract hydrochloric acid. The remaining aqueous solution consists of a substantially nitrate-free brine containing hydrochloric acid. The NO.sub.3.sup.- -loaded solvent is washed, the nitric acid as well as the organic solvent being respectively recycled in the process. The process saves appreciable amounts of nitric acid. Optionally, pure hydrochloric acid could be obtained from the nitrate-free brine, by distillation or by solvent extraction using butanols or pentanols as extractants.

    摘要翻译： 本发明涉及从氯化钾和硝酸制造硝酸钾的方法。 根据本发明，氯化钾和硝酸在水介质中在-25℃至+ 10℃的温度下反应。从分离所得硝酸钾后得到的盐水溶液中，加入硝酸 酸是通过含有至少一种选自具有5-10个碳原子的化合物的化合物的有机溶剂溶液，分子量为100-1000的直链或环状聚醚，在水中稍混溶的聚亚烷基二醇， 分子量在1000至3000范围内，以及磷酸，膦酸和次膦酸的有机酯或其混合物，基本上不提取盐酸的有机稀释剂中。 剩余的水溶液由含有盐酸的基本上不含硝酸盐的盐水组成。 洗涤含NO3的溶剂，硝酸和有机溶剂分别在该过程中循环使用。 该方法可节省可观量的硝酸。 任选地，可以通过蒸馏或通过使用丁醇或戊醇作为萃取剂的溶剂萃取从无硝酸盐的盐水中获得纯盐酸。

    Method of recovering bromide from bromine-containing smelting ash
    8.
    发明授权
    Method of recovering bromide from bromine-containing smelting ash 有权

    公开(公告)号：US10954125B2

    公开(公告)日：2021-03-23

    申请号：US16485141

    申请日：2019-01-15

    申请人： BEIJING UNIVERSITY OF TECHNOLOGY

    发明人： Dean Pan ,  Yufeng Wu

    IPC分类号： C01B9/00 ,  C01B9/04 ,  C01G9/06 ,  C01G21/20 ,  C22B7/00 ,  C22B3/00 ,  C22B19/30

    摘要： A method of recovering bromide from bromine-containing smelting ash relates to the field of high efficient separation and recovery of bromine by total wet method. It especially relates to the method of high efficiency separation of bromine salt and lead, zinc recovery of circuit board smelting ash by two-step method. It mainly comprising: sub-molten salt leaching, washing, separate Lead and zinc by adjusting the pH of industrial sulfuric acid, membrane separation and concentration, reuse of water, crude bromine salt recovery by evaporation crystallization of bromine salt. Compared with the traditional baking and recycling process of ash, the invention adopts sodium hydroxide submolten salt leaching technology and membrane separation and concentration technology, to reduce the reaction temperature and tailings discharge greatly, which has a good effect of energy saving and emission reduction.

    Reactor and method for making bromides
    9.
    发明授权
    Reactor and method for making bromides 有权

    公开(公告)号：US10351436B2

    公开(公告)日：2019-07-16

    申请号：US15598011

    申请日：2017-05-17

    申请人： LANXESS SOLUTIONS US, INC.

    发明人： Thomas G. Ray ,  David W. Bartley ,  Hugh Broadhurst ,  Nate Goodwin

    IPC分类号： B01J19/24 ,  C01F11/34 ,  B01J19/00 ,  C01B9/04 ,  C01D3/10 ,  C01D15/04 ,  C01F5/36

    摘要： Bromine containing compounds, such as calcium bromide, sodium bromide and the like, are prepared in high purity and more quickly with less waste by using a process with two bromination stages and often a third step wherein the crude product mixture can be adjusted to meet specific product requirements. In the first bromination stage, the majority, but not all, of a substrate is brominated using a reductive bromination reaction, the remaining unreacted substrate is converted to product in the second stage through another a reductive bromination reaction, although the specific reagents may be different, wherein the addition of bromine and a reducing agent are carefully monitored.

    PROCESS FOR CONVERTING GASEOUS ALKANES TO LIQUID HYDROCARBONS
    10.
    发明申请
    PROCESS FOR CONVERTING GASEOUS ALKANES TO LIQUID HYDROCARBONS 有权
    将气态碱转化为液体烃的方法

    公开(公告)号：US20090326292A1

    公开(公告)日：2009-12-31

    申请号：US12502024

    申请日：2009-07-13

    申请人： John J. Waycuilis

    发明人： John J. Waycuilis

    IPC分类号： C07C1/26 ,  C01B9/04 ,  C09K3/00

    CPC分类号： C01B9/04 ,  C01B7/093 ,  C01B7/096 ,  C07C1/26 ,  C07C17/10 ,  C07C2529/40 ,  C10G3/00 ,  C10G2300/1025 ,  Y02P30/20 ,  C07C19/075

    摘要： A process for converting gaseous alkanes to liquid hydrocarbons wherein a gaseous feed containing alkanes is reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid are then reacted over a synthetic crystalline alumino-silicate catalyst, such as a ZSM-5 zeolite, at a temperature of from about 150° C. to about 450° C. so as to form higher molecular weight hydrocarbons and hydrobromic acid vapor. Propane and butane which comprise a portion of the products may be recovered or recycled back through the process to form additional C5+ hydrocarbons. Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons and to generate bromine from the hydrobromic acid for use in the process.

    摘要翻译： 将气态烷烃转化为液态烃的方法，其中含有烷烃的气态原料与干溴蒸气反应形成烷基溴和氢溴酸蒸气。 然后将烷基溴和氢溴酸的混合物在约150℃至约450℃的温度下在合成的结晶铝硅酸盐催化剂如ZSM-5沸石上反应，以形成更高分子量 碳氢化合物和氢溴酸蒸气。 包含产物的一部分的丙烷和丁烷可以通过该方法回收或再循环以形成另外的C 5 +烃。 公开了各种方法以从较高分子量烃中除去氢溴酸蒸气，并从该氢过溴产生溴用于该方法。