公开(公告)号：US5364609A

公开(公告)日：1994-11-15

申请号：US76904

申请日：1993-06-15

申请人： Hendrikus J. H. Rouhof ,  Godefridus M. Van Dortmont ,  Michael W. M. Boesten

发明人： Hendrikus J. H. Rouhof ,  Godefridus M. Van Dortmont ,  Michael W. M. Boesten

IPC分类号： C01B21/14 ,  C01B21/40 ,  C07C249/08 ,  C01B21/20

CPC分类号： C07C249/08 ,  C01B21/1418 ,  C01B21/40

摘要： A process for the preparation and processing of a hydroxylammonium salt solution involves maintaining an aqueous acid reaction medium circulation between a hydroxylammonium salt synthesis zone and an oxime synthesis zone; continuously supplying nitrate ions or nitrogen oxides to be converted into nitrate, by way of nitrogen source for the formation of the hydroxylammonium salt, to the liquid being maintained in circulation; catalytically reducing the nitrate ions with hydrogen to obtain hydroxylamine; removing the ammonium ions, formed as a by-product in the reduction of the nitrate ions, by contacting the circulating liquid with a gas flow consisting of nitrogen oxides generated in catalytic combustion of ammonia. Advantageously, 0.01 to 5 wt. % of the nitrogen oxides formed in the combustion effect reduction of the ammonium ions to nitrogen, and the remainder of the nitrogen oxides are used for the preparation of nitric acid.

摘要翻译： 制备和加工羟基铵盐溶液的方法包括保持羟基铵盐合成区和肟合成区之间的含水酸反应介质循环; 通过氮源连续供给要转化为硝酸盐的硝酸根离子或氮氧化物，以形成羟基铵盐，使其保持循环; 用氢气催化还原硝酸根离子，得到羟胺; 通过使循环液体与由氨的催化燃烧中产生的氮氧化物组成的气流接触，除去作为副产物形成的铵离子。 有利地，0.01至5wt。 在燃烧中形成的氮氧化物的百分比使铵离子还原成氮，其余的氮氧化物用于制备硝酸。

公开(公告)号：US5362398A

公开(公告)日：1994-11-08

申请号：US84171

申请日：1993-07-01

申请人： Carolus H. M. Kamphuis ,  Hendrikus J. H. Rouhof

发明人： Carolus H. M. Kamphuis ,  Hendrikus J. H. Rouhof

IPC分类号： C01C1/28 ,  B01D61/14 ,  C01B21/14 ,  C07B63/00 ,  B01D61/00

CPC分类号： B01D61/147 ,  C01B21/1418 ,  C01B21/1472 ,  C01B21/1481

摘要： The invention relates to a process for the preparation and purification of a hydroxylammonium salt solution, wherein the hydroxylammonium salt solution is separated by filtration from an aqueous reaction mixture, containing solid catalyst particles among other things, the filtration technique applied being a crossflow filtration technique, the pore diameter of the filter medium being 0.01-10 .mu.m and the catalyst particles having an average size of 0.1-25 .mu.m.

摘要翻译： 本发明涉及一种羟基铵盐溶液的制备和纯化方法，其中羟基铵盐溶液通过过滤从包含固体催化剂颗粒的含水反应混合物中分离，其中所用的过滤技术是交叉流过滤技术， 过滤介质的孔径为0.01〜10μm，催化剂粒子的平均粒径为0.1〜25μm。