公开(公告)号：US3598707A

公开(公告)日：1971-08-10

申请号：US3598707D

申请日：1968-09-16

申请人： DOW CHEMICAL CO

发明人： BERGERON GRAFTON L ,  LEDDY JAMES J

IPC分类号： C25B1/20 ,  C25B1/26 ,  C01F11/14

CPC分类号： C25B1/20 ,  C25B1/26

摘要： A NOVEL ELECTROLYTIC CELL AND PROCESS FOR PRODUCING BOTH CHLORINE AND ALKALINE EARTH HYDROXIDES SIMULTANEOUSLY.

公开(公告)号：US3682797A

公开(公告)日：1972-08-08

申请号：US3682797D

申请日：1970-10-02

申请人： GREAT LAKES CARBON CORP

发明人： CARR PETER

IPC分类号： C25B1/40 ,  C25B9/14 ,  C01D1/12 ,  C01F11/14 ,  C22D1/04

CPC分类号： C25B9/142 ,  C25B1/40

摘要： IN A CONVENTIONAL MERCURY CELL FOR PRODUCING CHLORINE AND SODIUM HYDROXIDE FROM BRINE, THE MERCURY FLOWS THROUGH THE CELL DURING ELECTROLYSIS AND PICKS UP SODIUM TO FORM AN AMALGAM. THE AMALGAM LEAVES THE CELL AND IS PUMPED OR ALLOWED TO FLOW THROUGH A SEAL INTO A DECOMPOSER OR "DENUDER" WHICH IS SEPARATE FROM THE CELL. IN THE PRESENT INVENTION BOTH THE ELECTROLYSIS OF THE BRINE AND THE DECOMPOSING OF THE AMALGAM ARE CARRIED OUT IN THE SAME CELL. THE INVENTION IS BASED UPON THE UTILIZATION OF A STATIONARY FILM OR LAYER OF MERCURY AND A NONAMALGAMABLE, ELECTRICALLY CONDUCTIVE, POROUS MEMBER SUCH AS GRAPHITE WHICH IS IN DIRECT CONTACT WITH THE BOTTOM OF THE MERCURY LAYER.

公开(公告)号：US4438083A

公开(公告)日：1984-03-20

申请号：US418547

申请日：1982-09-15

申请人： Michael H. Willems ,  Winfried J. W. Vermijs

发明人： Michael H. Willems ,  Winfried J. W. Vermijs

IPC分类号： C01C1/18 ,  C01F5/38 ,  C05C1/02 ,  C01F11/14

CPC分类号： C01C1/18 ,  C01C1/185 ,  C01F5/38 ,  C05C1/02 ,  C01P2006/12

摘要： Process for preparing magnesium nitrate hexahydrate without the need for filtering aids. A process for preparing magnesium nitrate hexahydrate essentially comprises: (a) forming a magnesium oxide or magnesium carbonate suspension in melted magnesium nitrate hexahydrate at a suspension temperature in excess of 90.degree. C.; (b) adding a nitric acid solution to the suspension while stirring thereby forming a reaction mixture containing additional magnesium nitrate hexahydrate; (c) filtering the liquid reaction mixture to obtain a clear magnesium nitrate hexahydrate filtrate; (d) discharging as product a part, corresponding to the amount of magnesium oxide or magnesium carbonate introduced, of the liquid magnesium nitrate hexahydrate obtained as clear filtrate; (e) utilizing the remaining part as liquid medium for the conversion of magnesium oxide or magnesium carbonate with nitric acid. Thermally stabilized ammonium nitrate containing granules may also be prepared containing magnesium nitrate hexahydrate according to the above process.

摘要翻译： 制备硝酸镁六水合物的方法，无需过滤助剂。 制备硝酸镁六水合物的方法主要包括：（a）在熔融的硝酸镁六水合物中在悬浮温度超过90℃下形成氧化镁或碳酸镁悬浮液。 （b）在搅拌下向该悬浮液中加入硝酸溶液，形成含有另外的硝酸镁六水合物的反应混合物; （c）过滤液体反应混合物，得到透明的硝酸镁六水合物滤液; （d）将作为透明滤液得到的液体硝酸镁六水合物的一部分相当于导入的氧化镁或碳酸镁的量排出的部分; （e）利用剩余部分作为液体介质，用于将氧化镁或碳酸镁与硝酸转化。 根据上述方法，还可以制备含有水合硝酸铵的颗粒，其含有六水合硝酸镁。

公开(公告)号：US3788960A

公开(公告)日：1974-01-29

申请号：US3788960D

申请日：1973-02-16

申请人： GRACE W R & CO

发明人： PATIL A ,  SINGER J

IPC分类号： B01J49/00 ,  B01D13/02 ,  C01F11/14

CPC分类号： B01J49/00

摘要： A METHOD OF RECYCLING ION EXCHANGE REGENERANT CHEMICALS WICH COMPRISES ELECTROLYZING THE REGENERANT CHEMICALS IN A THREE-COMPARTMENT CELL IN A MANNER SUCH THAT THE CALCIUM, MAGNESIUM, AND OTHER IMPURITY METAL IONS ARE PRECIPITATED AND CAN BE REMOVED. THE RESULTING SODIUM CHLORIDE SOLUTION IS THEN RECYCLED INTO THE SYSTEM.