Process for working up nitric acid

Details Process for working up nitric acid Process for working up nitric acid

1980-06-30

1982-08-17

Sever, Frank

Distillation: processes, separatory

Distilling to separate or remove only water

From nitric acid

159DIG19, 203 73, 203 91, B01D 100, B01D 314

Patent

active

043448275

ABSTRACT:
Process for working up aqueous nitric acid which is of a concentration above the azeotropic concentration and contains organic compounds in solution for suspension wherein said nitric acid of a concentration about the azeotropic concentration is distilled off in one or more rectification steps until the azeotropic nitric acid is obtained. In the process, certain specified ratios of nitric acid and water to organic constituents must be maintained.

REFERENCES:
patent: 3479254 (1969-11-01), Miserlis
patent: 3928395 (1975-12-01), Seha et al.

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