专利检索 ap:("STAMICARBON") AND inv:"KWANTEN FERDINAND J G" 第 1 页

1.

发明授权
Cyclic process for the preparation of an oxime from a hydroxylammonium salt solution 失效

公开(公告)号：US3701809A

公开(公告)日：1972-10-31

申请号：US3701809D

申请日：1969-11-12

申请人： STAMICARBON

发明人： ROOIJ ABRAHAM H DE , KWANTEN FERDINAND J G

IPC分类号： C01B21/02 , C01B21/14 , C01B21/26 , C07C131/00 , C01B21/00 , C01C1/28

CPC分类号： C01B21/1418 , C01B21/02 , C01B21/26

摘要： A CYCLIC PROCESS IN WHICH AN AQUEOUS ACID REACTION MIXTURE IS KEPT IN CIRCULATION BETWEEN A ZONE FOR THE SYNTHESIS OF HYDROXYLAMINE AND A ZONE FOR THE SYNTHESIS OF OXIME. NITRIC ACID IS CONTINUOUSLY ADDED TO THE CIRCULATING LIQUID, THE NITRATE IONS BEING CATALYTICALLY REDUCED WITH H2 TO FORM NH2OH AND SOME NH3 AS BY-PRODUCT. THE NH2OH IS CONSUMED IN OXIME SYNTHESIS ZONE AND THE NH3 BY-PRODCUT IS CONTINUOUSLY REMOVED BY CONTACTING THE CIRCULATING LIQUID WITH A MIXTURE CONTAINING NO AND NO2 UNDER SUCH CONDITIONS THAT N2 AND H2O RESULT.