A Method for Obtaining Nitric Acid
Abstract
The invention concerns the industrial production of nitric acid of increased concentration. By using the method, it is possible to increase the concentration of acid to 70-74% without using additional nitric oxides, resulting in conversion of a maximum amount of the oxide of nitrous gases to acid. In this method the process of acid formation under conditions of condensation of water vapors takes place in a refrigerator-condenser at a pressure of 5 atm. Unreacted nitric oxides are absorbed by nitric acid at temperatures no higher than -5 deg C in absorption column, with subsequent bleaching. The obtained 58-62-% nitric acid is strengthened to 70-74% in the absorption part of the bleaching column at a temperature of 25-45 deg C by concentrated gases in the lower part of the bleaching column.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 21, 1967
- Accession Number
- AD0662815
Entities
People
- D. A. Alekseyenko
- G. A. Skvortsov
- I. P. Kirillov
- M. L. Ferd
- M. M. Karavayev