公开(公告)号：DE2450255A1

公开(公告)日：1976-05-06

申请号：DE2450255

申请日：1974-10-23

Applicant: BASF AG

Inventor： BRUENEMANN HILMAR DIPL ING ,  STOECKELMANN GUENTER DIPL CHEM ,  HAWKES GEORGE LESLIE DR

IPC: C01B17/94

Abstract: Mixed acid (H2SO4-HNO3) or H2SO4 contaminated with nitration prods. is worked up by simultaneous addn. of the impure acid and N oxide or nitrosyl cpds. to 60-100 wt.% H2SO4 (H2SO4 sump) at 140-350, pref. 200-280 degrees C. Denitrification and the removal of large amts. of stable organic nitro cpds. take place simultaneously. Even by-prods. of nitration which are resistant to boiling H2SO4 are oxidised completely. Pref., part of the vapour given off by the acid is condensed and added to the sump, to provide the N oxide or nitrosyl cpds. The process can be operated continuously or batchwise.

公开(公告)号：DE2338438A1

公开(公告)日：1975-02-13

申请号：DE2338438

申请日：1973-07-28

Applicant: BASF AG

Inventor： HAWKES GEORGE LESLIE DR ,  BRUENEMANN HILMAR DIPL-ING ,  STOECKELMANN GUENTER DIPL-CHEM

IPC: C01B21/46

Abstract: High-strength nitric acid contaminated by nitration products is introduced into from 80 to 100 per cent by weight strength sulphuric acid having a temperature of 200 to 300 DEG C. At the same time, the sulphuric acid is admixed with sulphuric acid containing nitrogen oxides or a nitrosyl compound. The organic components contained in the nitric acid are oxidised into water, carbon dioxide and/or carbon monoxide. The distillate obtained is a nitric acid which is free of organic components and which can again be processed to give high-strength nitric acid.

公开(公告)号：CH609016A5

公开(公告)日：1979-02-15

申请号：CH1023674

申请日：1974-07-24

Applicant: BASF AG

Inventor： BRUENEMANN HILMAR DIPL ING ,  STOECKELMANN GUETER DR ,  HAWKES GEORGE LESLIE DR

IPC: C01B21/46