公开(公告)号：US4202860A

公开(公告)日：1980-05-13

申请号：US799891

申请日：1977-05-23

申请人： Tetsuya Miyake ,  Norito Ogawa ,  Motohisa Asano ,  Kazuo Okuyama

发明人： Tetsuya Miyake ,  Norito Ogawa ,  Motohisa Asano ,  Kazuo Okuyama

IPC分类号： B01D59/30 ,  C01G43/00

CPC分类号： B01D59/30

摘要： A process for continuously separating uranium isotopes by oxidation-reduction reaction using an anion exchanger comprising the steps of subjecting an eluant containing a deactivated oxidizing agent and a deactivated reducing agent as a mixture to oxidation to regenerate the deactivated oxidizing agent, separating the regenerated oxidizing agent from the eluant with an anion exchanger and reusing the regenerated oxidizing agent for continuing the separation of uranium isotopes.

摘要翻译： 一种通过使用阴离子交换器通过氧化还原反应连续分离铀同位素的方法，包括以下步骤：将含有去活化氧化剂和失活还原剂的洗脱剂作为混合物进行氧化以再生失活氧化剂，分离再生氧化剂 从具有阴离子交换剂的洗脱液中重新使用再生氧化剂以继续分离铀同位素。

公开(公告)号：US4255607A

公开(公告)日：1981-03-10

申请号：US69420

申请日：1979-08-24

申请人： Tetsuya Miyake ,  Kohji Inada ,  Motohisa Asano

发明人： Tetsuya Miyake ,  Kohji Inada ,  Motohisa Asano

IPC分类号： C07C7/13

CPC分类号： C07C7/13

摘要： A process for the adsorption separation of C.sub.8 aromatic isomers which comprises the steps of:(a) Supplying a C.sub.8 aromatic isomer mixture to a separation zone packed with a zeolite adsorbent to form an C.sub.8 aromatic isomer mixture adsorption band, the zeolite being a faujasite structured zeolite where at least about 60% of the exchangeable cation sites are replaced by potassium ion, and the remaining exchangeable cation sites being replaced by at least one metal cation selected from the group consisting of sodium, lithium, rubidium, cesium, magnesium, calcium, strontium, barium, nickel, copper, silver, manganese, cadmium, thallium and lanthanum ions;(b) Supplying a desorbent to the separation zone to develop the C.sub.8 aromatic isomer mixture adsorption band, the desorbent being an ether compound having a selectivity of about 0.3 to about 3.0 over para-xylene measured at a concentration of about 10 to about 90% by weight of the ether compound in the mixture of the ether compound and para-xylene;(c) Repeating the step (a) and the step (b) alternately to effect the migration of the C.sub.8 isomer mixture adsorption band; and(d) Collecting the entire amount of the C.sub.8 aromatic isomer in fractions at the outlet of the separation zone.

摘要翻译： 一种用于吸附分离C8芳族异构体的方法，其包括以下步骤：（a）向填充有沸石吸附剂的分离区提供C8芳族异构体混合物以形成C8芳族异构体混合物吸附带，沸石为八面沸石结构 沸石，其中至少约60％的可交换阳离子位点被钾离子代替，并且剩余的可交换阳离子位置被至少一种选自钠，锂，铷，铯，镁，钙， 锶，钡，镍，铜，银，锰，镉，铊和镧离子; （b）向分离区提供解吸剂以开发C8芳族异构体混合物吸附带，所述解吸剂是以约10至约90％的浓度测量的对二甲苯选择性为约0.3至约3.0的醚化合物， 的醚化合物和对二甲苯的混合物中的醚化合物; （c）交替地重复步骤（a）和步骤（b）以实现C8异构体混合物吸附带的迁移; 和（d）在分离区的出口处收集馏分中的全部量的C 8芳族异构体。