公开(公告)号：WO02083554A3

公开(公告)日：2003-10-02

申请号：PCT/EP0203422

申请日：2002-03-27

Applicant: BASF AG ,  HOFMANN PAUL ,  SANDEN FRANZ JOSEF ,  DOERFLINGER WALTER

Inventor： HOFMANN PAUL ,  SANDEN FRANZ JOSEF ,  DOERFLINGER WALTER

IPC: C01B21/46

CPC classification number: C01B21/46

Abstract: The invention relates to a novel and improved method for the production of highly pure nitric acid by distillation or rectification of nitric acid, crude nitric acid or mixtures thereof in a column, wherein 85 to 95 percent by weight of nitric acid, crude nitric acid or the mixtures thereof is distilled at temperatures ranging from 70 to 110 DEG C and at a pressure ranging from 0.1 to 2 bar.

Abstract translation: 因此，在70的温度至110℃通过在由85列蒸馏或硝酸，Rohsalpetersäure或它们的混合物的精馏生产高纯度硝酸至95重量％的硝酸，Rohsalpetersäure或其混合物; C一种新的和改进的方法 蒸馏和0.1至2巴的压力。

公开(公告)号：DE10118383A1

公开(公告)日：2002-10-24

申请号：DE10118383

申请日：2001-04-12

Applicant: BASF AG

Inventor： HOFMANN PAUL ,  SANDEN FRANZ JOSEF ,  DOERFLINGER WALTER

IPC: C01B21/46

Abstract: Producing high purity nitric acid. Production of high-purity nitric acid comprises distilling 85-95 % nitric acid and/or crude nitric acid at 70-115 deg C and 0.1-2 bar.