EP 1379467 A2 20040114 - METHOD FOR THE PRODUCTION OF HIGHLY PURE NITRIC ACID
Title (en)
METHOD FOR THE PRODUCTION OF HIGHLY PURE NITRIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG VON HOCHREINER SALPETERSÄURE
Title (fr)
PROCEDE DE PRODUCTION D'ACIDE DE SALPETRE EXTREMEMENT PUR
Publication
Application
Priority
- DE 10118383 A 20010412
- EP 0203422 W 20020327
Abstract (en)
[origin: WO02083554A2] 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.
IPC 1-7
IPC 8 full level
C01B 21/46 (2006.01)
CPC (source: EP US)
C01B 21/46 (2013.01 - EP US)
Citation (search report)
See references of WO 02083554A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02083554 A2 20021024; WO 02083554 A3 20031002; DE 10118383 A1 20021024; EP 1379467 A2 20040114; JP 2004529841 A 20040930; JP 4349806 B2 20091021; TW I228488 B 20050301; US 2005074389 A1 20050407
DOCDB simple family (application)
EP 0203422 W 20020327; DE 10118383 A 20010412; EP 02732530 A 20020327; JP 2002581317 A 20020327; TW 91106313 A 20020329; US 47321203 A 20030929